Read Tank Inspection Report text version

Tank Inspection Report

Client Location Tank Identification Inspection Date

Sample Sample Tank 8 Sample

Silverwing (UK) Ltd, Unit 31, Cwmdu Industrial Estate, Carmarthen road, Swansea SA5 8JF UK Tel: +44 (0) 1792 585533 Fax: +44 (0) 1792 586044 e-mail: [email protected]

Tank Inspection Report

Client Location Tank Identification Inspection Date Sample Sample Tank 8 Sample

Inspection Details

Location Floor Plates Inspection Type MFL UT corrosion sizing Pit gauge corrosion sizing Floor Plate Lap Welds Internal Shell to Annular weld Vacuum Box MPI Visual Internal Shell Plates Nozzle inspection Visual UT thickness measurements Visual Procedure Number MFL/001/06/F UT/002/06 PG/001/06 VB/001/06 MPI/001/06 VT/001/06 VT/001/06 UT/001/06 VT/001/06

1

MPI

MPI/001/06

External Shell Plates

Scorpion B-Scan Visual UT corrosion sizing Visual

SCB/UT/002/06 VT/001/06 UT/002/06 VT/001/06

External Floor Plate (toe) Inspection UT thickness measurements External Roof Inspection Visual UT thickness measurements External Appurtenances External Attachment welds Visual Visual MPI General Housekeeping Visual UT/002/06 VT/001/06 UT/002/06

VT/001/06 VT/001/06 MPI/001/06 VT/001/06

2

Results Summary ­ Tank 8

Floor MFL Results Observation UT corrosion sizing Results Pit gauge corrosion sizing Floor Plate Lap Welds Vacuum Box Internal shell to annular weld MPI Visual Internal shell Plates Visual A % of the MFL indications were cross checked by UT. The ultrasonic results confirmed the accuracy of the FloormapVS results. A % of the MFL indications were cross checked by Pit gauge. The Pit gauging confirmed the accuracy of the FloormapVS results. The lap welds had been cleaned to a sufficient standard to allow a meaningful inspection to take place. No leak indications were detected during this survey. The weld had been cleaned to a sufficient standard to allow a meaningful inspection to take place. No linear crack like indications were detected during this survey. The weld appeared to be in good condition with no significant corrosion, cracking or distortion visible. The internal shell plates had been cleaned to a sufficient standard to allow a meaningful inspection to take place. Severe corrosion and through holes were noted at several areas on the shell. Access restrictions presented physical measurements from being taken. Circular liquid staining was noted around welds on strake 3, plate 4 and Strake 1, plate 18. This type of staining can be indicative of small perforations in the weld. The nozzle areas were clean enough to allow a meaningful inspection to take place. See attached data sheets. The nozzle welds were generally in good condition with no significant undercut, corrosion, cracking or distortion visible. The nozzle coating appeared to be in a good condition. No linear crack type indications were detected during this survey. The external shell was clean enough to allow a meaningful inspection to take place. See attached B-Scan report summary. Cleanliness The floor had been cleaned to a sufficient standard to allow a meaningful inspection to take place. Corrosion in excess of 40% loss of the nominal floor thickness was detected during the survey. See attached data sheets for location and severity of the corrosion.

Results Cleanliness Results Cleanliness Results Results Cleanliness Results

Nozzles UT thickness measurements Visual

Cleanliness Results

Results

MPI External Shell plates Scorpion B-scan

Results Cleanliness

Results

3

Visual

Results

Corrosion, holes and staining from leaked product were noted at several areas on the external surfaces of the shell. With the exception of the above areas, the coating appeared to be in a generally good condition. It should be noted that the width of each B-Scan is approximately 5mm. Areas of severe corrosion resulting in holes were noted on Course 3, Course 4 and Course 5. The External floor plates were clean enough to allow a meaningful inspection to take place. See attached data sheets. Several areas of bubbled or missing paint were noted which has led to Some corrosion lamination at edge of plates. The seal between the pad and the external floor plates has started to break down. The roof was clean enough to allow a meaningful inspection to take place. The coating appeared to be in a good condition. No excessive distortion or corrosion noted on roof plates. See attached data sheets.

Observations

External Floor plate (Toe) UT thickness measurements Visual

Cleanliness Results Results

Tank Roof Plates Visual UT thickness measurements External Attachment welds MPI Visual

Cleanliness Results Results

Cleanliness Results Results

All attachment welds were clean enough to allow a meaningful inspection to take place. No linear crack type indications were detected during this survey. The welds appeared to be in good condition with no significant undercut, corrosion, cracking or distortion visible. The coating appeared to be in a good condition. All appurtenances were clean enough to allow a meaningful inspection to take place. Severe corrosion was noted on the wind stiffener at several areas. The corrosion appeared to have initiated at the joint between the wind stiffener and wind stiffener retaining brackets (see photographs). With the exception of the Wind-Stiffener the coating to all appurtenances appeared to be in a generally good condition. There were no signs of distress, excessive material flaking, thinning or corrosion staining. See attached data sheets. The tank, bund and surrounding area was found to be in a clean condition.

External Appurtenances Visual

Cleanliness Results

General Housekeeping

Cleanliness

4

Photographs ­ Tank 8

Internal Shell

Circular Staining at weld on Strake 3 Plate 4

Circular staining at weld on strake 1 Plate 18.

5

Internal Floor Plates

Row 16 Plate 5 Hole caused by top surface corrosion pit.

Row 20 Plate 5 4.5mm deep Top Surface corrosion pit.

6

External Wind-Guard

Severe corrosion around fixing brackets on Wind-guard

7

External Shell

Product staining caused by holes through shell

Example of corrosion, holes and Product Staining on course 4

8

External Tank Floor Plates (Toe)

Breakdown of seal between external floor plates and concrete pad resulting in minor corrosion to the external floor plates in several areas

9

Inspection carried out by Report authorised by

J Burton/ C Saunders / D Weavers M Kircough

................................................

Dated .......................................

10

Magnetic Flux Leakage Tank Floor Inspection Summary.

Tank 8

Equipment Used

Sample Inspection Report.

The inspection was carried out using:Silverwing (UK) Ltd FloormapVS Scanner. Serial no: 2160211 Silverwing (UK) Ltd Handscan MFL scanner. Serial no: 4190506 Krautkramer USM 25 Ultrasonic Set. Serial no: X6278le

MFL Results

The X / Y co-ordinates and the corrosion severity, as confirmed by either ultrasonic inspection or pit gauging, are shown in the attached drawings. Nominal 6mm floor plates. Nominal 8mm annular plates. FloormapVS signals do not discriminate between top and bottom surface originating defects so the results should be viewed as a total floor condition. The FloormapVS inspection detected corrosion signals that were analysed as in excess of 40% loss of the nominal floor thickness.

Floor Thickness

Restrictions

Observations

The results from the magnetic flux leakage (MFL) inspection are presented as follows: Plate Numbering System Rows are numbered from the top downwards relative to the tank datum. Plates are numbered from left to right relative to the tank datum. An image of the tank floor surveyed is shown with each plate colour coded to the maximum material loss detected by the FloormapVS inspection. This drawing is used to quickly identify areas of concern in the tank floor.

Max Defect per Plate

Individual Plate Drawings Drawings of plates that have defect indications in excess of 40% loss of the nominal plate thickness have been printed out. The location and severity of any corrosion indication in excess of 40% loss is shown on the attached plate drawings.

Electronic Report

A CD is attached to this report which contains the following information: a) A PDF document containing the written report

b) A compiled .tnk file containing the data files c) FloormapVS Read Only Software

Maximum discontinuity per track

Tank Location Client Operator Company Outer Tank Diameter

8 Sample Sample Silverwing uk ltd 43980 mm

Import Threshold: 20%

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Tank Floor Numbering System

Tank Location Client Operator Company Outer Tank Diameter

8 Sample Sample Silverwing uk ltd 43980 mm

Import Threshold: 20%

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Tank Floor Layout

Tank Location Client Operator Company Outer Tank Diameter

8 Sample Sample Silverwing uk ltd 43980 mm

Import Threshold: 20%

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Number of discontinuities on tank floor 8 in bands of 10%

119107

Y Axis: Number of discontinuities

8070 1216 20% - 30% 30% - 40% 40% - 50% 223 50% - 60% 31 60% - 70% 15 70% - 80% 3 80% - 90% 0 90% - 100%

X Axis: Grouped Percentages (10% per bar)

Tank Datum

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Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

1 2220 Vertical 43 40 8 Sample Silverwing uk ltd Sample 1/13/2006

8 Plate: 1530 Plate Width: Uni-Directional Scan Method: Discontinuity Count: 4 Upper Threshold: 100 Import Threshold:

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Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

2 6100 Horizontal 44 40 8 Sample Silverwing uk ltd Sample 1/13/2006

2 Plate: 1620 Plate Width: Raster Scan Method: Discontinuity Count: 1 Upper Threshold: 100

Import Threshold:

20%

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Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

3 6130 Horizontal 48 40 8 Sample Silverwing uk ltd Sample 1/13/2006

3 Plate: 1630 Plate Width: Raster Scan Method: Discontinuity Count: 13 Upper Threshold: 100

Import Threshold:

20%

0mm

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Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

3 6080 Horizontal 40 40 8 Sample Silverwing uk ltd Sample 1/13/2006

5 Plate: 1630 Plate Width: Raster Scan Method: Discontinuity Count: 1 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

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Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

4 6170 Horizontal 43 40 8 Sample Silverwing uk ltd Sample 1/13/2006

2 Plate: 1640 Plate Width: Raster Scan Method: Discontinuity Count: 4 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

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Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

4 6010 Horizontal 50 40 8 Sample Silverwing uk ltd Sample 1/13/2006

3 Plate: 1640 Plate Width: Raster Scan Method: Discontinuity Count: 3 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

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Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

5 6120 Horizontal 42 40 8 Sample Silverwing uk ltd Sample 1/13/2006

5 Plate: 1590 Plate Width: Raster Scan Method: Discontinuity Count: 1 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

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Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

7 6060 Horizontal 44 40 8 Sample Silverwing uk ltd Sample 1/13/2006

2 Plate: 1640 Plate Width: Uni-Directional Scan Method: Discontinuity Count: 1 Upper Threshold: 100 Import Threshold:

20%

0mm

500mm

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Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

7 6170 Horizontal 43 40 8 Sample Silverwing uk ltd Sample 1/13/2006

3 Plate: 1640 Plate Width: Raster Scan Method: Discontinuity Count: 3 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

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2000mm

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3500mm

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Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

7 5890 Horizontal 60 40 8 Sample Silverwing uk ltd Sample 1/13/2006

4 Plate: 1640 Plate Width: Raster Scan Method: Discontinuity Count: 4 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

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3500mm

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Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

9 6100 Horizontal 40 40 8 Sample Silverwing uk ltd Sample 1/13/2006

6 Plate: 1630 Plate Width: Raster Scan Method: Discontinuity Count: 1 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

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3500mm

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5500mm

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Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

12 6130 Horizontal 42 40 8 Sample Silverwing uk ltd Sample 1/13/2006

4 Plate: 1630 Plate Width: Raster Scan Method: Discontinuity Count: 5 Upper Threshold: 100

Import Threshold:

20%

0mm

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Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

12 6070 Horizontal 45 40 8 Sample Silverwing uk ltd Sample 1/13/2006

5 Plate: 1630 Plate Width: Raster Scan Method: Discontinuity Count: 7 Upper Threshold: 100

Import Threshold:

20%

0mm 1500mm

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Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

13 6040 Horizontal 43 40 8 Sample Silverwing uk ltd Sample 1/13/2006

4 Plate: 1580 Plate Width: Raster Scan Method: Discontinuity Count: 1 Upper Threshold: 100

Import Threshold:

20%

0mm 1500mm

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Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

13 6000 Horizontal 41 40 8 Sample Silverwing uk ltd Sample 1/13/2006

6 Plate: 1580 Plate Width: Uni-Directional Scan Method: Discontinuity Count: 3 Upper Threshold: 100 Import Threshold:

20%

2500mm

2000mm

1500mm

1000mm

500mm

0mm

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Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

14 2970 Horizontal 43 40 8 Sample Silverwing uk ltd Sample 1/13/2006

1 Plate: 1610 Plate Width: Uni-Directional Scan Method: Discontinuity Count: 1 Upper Threshold: 100 Import Threshold:

20%

0mm

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Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

14 6100 Horizontal 44 40 8 Sample Silverwing uk ltd Sample 1/13/2006

2 Plate: 1610 Plate Width: Raster Scan Method: Discontinuity Count: 7 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

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Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

14 6040 Horizontal 42 40 8 Sample Silverwing uk ltd Sample 1/13/2006

3 Plate: 1610 Plate Width: Raster Scan Method: Discontinuity Count: 1 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

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4500mm

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5500mm

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Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

14 6110 Horizontal 50 40 8 Sample Silverwing uk ltd Sample 1/13/2006

4 Plate: 1610 Plate Width: Raster Scan Method: Discontinuity Count: 25 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

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4500mm

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5500mm

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0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

14 6070 Horizontal 59 40 8 Sample Silverwing uk ltd Sample 1/13/2006

5 Plate: 1610 Plate Width: Raster Scan Method: Discontinuity Count: 23 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

14 2970 Horizontal 49 40 8 Sample Silverwing uk ltd Sample 1/13/2006

8 Plate: 1610 Plate Width: Uni-Directional Scan Method: Discontinuity Count: 9 Upper Threshold: 100 Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

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3500mm

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4500mm

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5500mm

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1500mm

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0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

15 6110 Horizontal 48 40 8 Sample Silverwing uk ltd Sample 1/13/2006

3 Plate: 1630 Plate Width: Raster Scan Method: Discontinuity Count: 6 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

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3500mm

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4500mm

5000mm

5500mm

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0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

15 6060 Horizontal 40 40 8 Sample Silverwing uk ltd Sample 1/13/2006

4 Plate: 1630 Plate Width: Raster Scan Method: Discontinuity Count: 1 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

15 2990 Horizontal 55 40 8 Sample Silverwing uk ltd Sample 1/13/2006

5 Plate: 1630 Plate Width: Raster Scan Method: Discontinuity Count: 31 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

4000mm

4500mm

5000mm

5500mm

6000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

15 6130 Horizontal 80 40 8 Sample Silverwing uk ltd Sample 1/13/2006

6 Plate: 1630 Plate Width: Raster Scan Method: Discontinuity Count: 55 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

4000mm

4500mm

5000mm

5500mm

6000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

16 6050 Horizontal 45 40 8 Sample Silverwing uk ltd Sample 1/13/2006

2 Plate: 1630 Plate Width: Uni-Directional Scan Method: Discontinuity Count: 7 Upper Threshold: 100 Import Threshold:

20%

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5500mm

6000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

16 6020 Horizontal 46 40 8 Sample Silverwing uk ltd Sample 1/13/2006

4 Plate: 1630 Plate Width: Raster Scan Method: Discontinuity Count: 5 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

4000mm

4500mm

5000mm

5500mm

6000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

16 6150 Horizontal 80 40 8 Sample Silverwing uk ltd Sample 1/13/2006

5 Plate: 1630 Plate Width: Raster Scan Method: Discontinuity Count: 211 Upper Threshold: 100

Import Threshold:

20%

2000mm

1500mm

1000mm

500mm

0mm

1500mm

1000mm

500mm

Tank Datum

0mm

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

17 2110 Horizontal 73 40 8 Sample Silverwing uk ltd Sample 1/13/2006

1 Plate: 1620 Plate Width: Uni-Directional Scan Method: Discontinuity Count: 42 Upper Threshold: 100 Import Threshold:

20%

0mm

500mm

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1500mm

2000mm

2500mm

3000mm

3500mm

4000mm

4500mm

5000mm

5500mm

6000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

17 6090 Horizontal 54 40 8 Sample Silverwing uk ltd Sample 1/13/2006

2 Plate: 1620 Plate Width: Raster Scan Method: Discontinuity Count: 29 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

4000mm

4500mm

5000mm

5500mm

6000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

17 6100 Horizontal 40 40 8 Sample Silverwing uk ltd Sample 1/13/2006

4 Plate: 1620 Plate Width: Raster Scan Method: Discontinuity Count: 1 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

4000mm

4500mm

5000mm

5500mm

6000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

17 6070 Horizontal 50 40 8 Sample Silverwing uk ltd Sample 1/13/2006

5 Plate: 1620 Plate Width: Raster Scan Method: Discontinuity Count: 13 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

4000mm

4500mm

5000mm

5500mm

6000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

17 6110 Horizontal 41 40 8 Sample Silverwing uk ltd Sample 1/13/2006

6 Plate: 1620 Plate Width: Raster Scan Method: Discontinuity Count: 1 Upper Threshold: 100

Import Threshold:

20%

6000mm

5500mm

5000mm

4500mm

4000mm

3500mm

3000mm

2500mm

2000mm

1500mm

1000mm

500mm

0mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

18 6410 Horizontal 52 40 8 Sample Silverwing uk ltd Sample 1/13/2006

1 Plate: 1620 Plate Width: Uni-Directional Scan Method: Discontinuity Count: 35 Upper Threshold: 100 Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

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4500mm

5000mm

5500mm

6000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

18 6040 Horizontal 61 40 8 Sample Silverwing uk ltd Sample 1/13/2006

2 Plate: 1620 Plate Width: Raster Scan Method: Discontinuity Count: 11 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

4000mm

4500mm

5000mm

5500mm

6000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

18 6140 Horizontal 46 40 8 Sample Silverwing uk ltd Sample 1/13/2006

3 Plate: 1620 Plate Width: Raster Scan Method: Discontinuity Count: 6 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

18 2980 Horizontal 40 40 8 Sample Silverwing uk ltd Sample 1/13/2006

4 Plate: 1620 Plate Width: Raster Scan Method: Discontinuity Count: 1 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

4000mm

4500mm

5000mm

5500mm

6000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

18 6120 Horizontal 44 40 8 Sample Silverwing uk ltd Sample 1/13/2006

5 Plate: 1620 Plate Width: Raster Scan Method: Discontinuity Count: 5 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

4000mm

4500mm

5000mm

5500mm

6000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

18 6380 Horizontal 75 40 8 Sample Silverwing uk ltd Sample 1/13/2006

7 Plate: 1620 Plate Width: Uni-Directional Scan Method: Discontinuity Count: 1 Upper Threshold: 100 Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

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4500mm

5000mm

5500mm

6000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

19 6000 Horizontal 45 40 8 Sample Silverwing uk ltd Sample 1/13/2006

2 Plate: 1620 Plate Width: Uni-Directional Scan Method: Discontinuity Count: 10 Upper Threshold: 100 Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

4000mm

4500mm

5000mm

5500mm

6000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

19 6190 Horizontal 59 40 8 Sample Silverwing uk ltd Sample 1/13/2006

3 Plate: 1620 Plate Width: Raster Scan Method: Discontinuity Count: 35 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

4000mm

4500mm

5000mm

5500mm

6000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

19 6040 Horizontal 63 40 8 Sample Silverwing uk ltd Sample 1/13/2006

4 Plate: 1620 Plate Width: Raster Scan Method: Discontinuity Count: 99 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

4000mm

4500mm

5000mm

5500mm

6000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

19 6180 Horizontal 50 40 8 Sample Silverwing uk ltd Sample 1/13/2006

5 Plate: 1620 Plate Width: Raster Scan Method: Discontinuity Count: 27 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

19 3960 Horizontal 50 40 8 Sample Silverwing uk ltd Sample 1/13/2006

7 Plate: 1620 Plate Width: Uni-Directional Scan Method: Discontinuity Count: 1 Upper Threshold: 100 Import Threshold:

20%

6000mm

5500mm

5000mm

4500mm

4000mm

3500mm

3000mm

2500mm

2000mm

1500mm

1000mm

500mm

0mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

20 6060 Horizontal 58 40 8 Sample Silverwing uk ltd Sample 1/13/2006

1 Plate: 1630 Plate Width: Uni-Directional Scan Method: Discontinuity Count: 46 Upper Threshold: 100 Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

4000mm

4500mm

5000mm

5500mm

6000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

20 6030 Horizontal 51 40 8 Sample Silverwing uk ltd Sample 1/13/2006

2 Plate: 1630 Plate Width: Raster Scan Method: Discontinuity Count: 20 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

4000mm

4500mm

5000mm

5500mm

6000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

20 6140 Horizontal 60 40 8 Sample Silverwing uk ltd Sample 1/13/2006

3 Plate: 1630 Plate Width: Raster Scan Method: Discontinuity Count: 48 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

4000mm

4500mm

5000mm

5500mm

6000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

20 6040 Horizontal 48 40 8 Sample Silverwing uk ltd Sample 1/13/2006

4 Plate: 1630 Plate Width: Raster Scan Method: Discontinuity Count: 4 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

4000mm

4500mm

5000mm

5500mm

6000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

20 6060 Horizontal 65 40 8 Sample Silverwing uk ltd Sample 1/13/2006

5 Plate: 1630 Plate Width: Raster Scan Method: Discontinuity Count: 80 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

4000mm

4500mm

5000mm

5500mm

6000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

21 6080 Horizontal 56 40 8 Sample Silverwing uk ltd Sample 1/13/2006

2 Plate: 1630 Plate Width: Raster Scan Method: Discontinuity Count: 37 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

4000mm

4500mm

5000mm

5500mm

6000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

21 6110 Horizontal 51 40 8 Sample Silverwing uk ltd Sample 1/13/2006

3 Plate: 1630 Plate Width: Raster Scan Method: Discontinuity Count: 38 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

21 3000 Horizontal 59 40 8 Sample Silverwing uk ltd Sample 1/13/2006

4 Plate: 1630 Plate Width: Raster Scan Method: Discontinuity Count: 33 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

4000mm

4500mm

5000mm

5500mm

6000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

21 6110 Horizontal 56 40 8 Sample Silverwing uk ltd Sample 1/13/2006

5 Plate: 1630 Plate Width: Raster Scan Method: Discontinuity Count: 28 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

4000mm

4500mm

5000mm

5500mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

21 5990 Horizontal 47 40 8 Sample Silverwing uk ltd Sample 1/13/2006

6 Plate: 1630 Plate Width: Raster Scan Method: Discontinuity Count: 4 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

21 3600 Horizontal 55 40 8 Sample Silverwing uk ltd Sample 1/13/2006

7 Plate: 1630 Plate Width: Uni-Directional Scan Method: Discontinuity Count: 42 Upper Threshold: 100 Import Threshold:

20%

7000mm

6500mm

6000mm

5500mm

5000mm

4500mm

4000mm

3500mm

3000mm

2500mm

2000mm

1500mm

1000mm

500mm

0mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

22 7140 Horizontal 40 40 8 Sample Silverwing uk ltd Sample 1/13/2006

1 Plate: 1610 Plate Width: Uni-Directional Scan Method: Discontinuity Count: 1 Upper Threshold: 100 Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

4000mm

4500mm

5000mm

5500mm

6000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

22 6180 Horizontal 64 40 8 Sample Silverwing uk ltd Sample 1/13/2006

2 Plate: 1610 Plate Width: Raster Scan Method: Discontinuity Count: 10 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

4000mm

4500mm

5000mm

5500mm

6000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

22 6050 Horizontal 51 40 8 Sample Silverwing uk ltd Sample 1/13/2006

3 Plate: 1610 Plate Width: Raster Scan Method: Discontinuity Count: 25 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

4000mm

4500mm

5000mm

5500mm

6000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

22 6200 Horizontal 54 40 8 Sample Silverwing uk ltd Sample 1/13/2006

4 Plate: 1610 Plate Width: Raster Scan Method: Discontinuity Count: 42 Upper Threshold: 100

Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

4000mm

4500mm

5000mm

5500mm

6000mm

6500mm

7000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

22 7060 Horizontal 56 40 8 Sample Silverwing uk ltd Sample 1/13/2006

5 Plate: 1610 Plate Width: Uni-Directional Scan Method: Discontinuity Count: 33 Upper Threshold: 100 Import Threshold:

20%

0mm

500mm

1000mm

1500mm

2000mm

2500mm

3000mm

3500mm

4000mm

4500mm

5000mm

5500mm

6000mm

1500mm

1000mm

500mm

0mm

Tank Datum

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

23 6080 Horizontal 51 40 8 Sample Silverwing uk ltd Sample 1/13/2006

2 Plate: 1610 Plate Width: Uni-Directional Scan Method: Discontinuity Count: 40 Upper Threshold: 100 Import Threshold:

20%

0mm

500mm

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Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

23 6020 Horizontal 57 40 8 Sample Silverwing uk ltd Sample 1/13/2006

3 Plate: 1610 Plate Width: Raster Scan Method: Discontinuity Count: 63 Upper Threshold: 100

Import Threshold:

20%

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Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

23 6090 Horizontal 57 40 8 Sample Silverwing uk ltd Sample 1/13/2006

4 Plate: 1610 Plate Width: Raster Scan Method: Discontinuity Count: 33 Upper Threshold: 100

Import Threshold:

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Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

23 6090 Horizontal 57 40 8 Sample Silverwing uk ltd Sample 1/13/2006

5 Plate: 1610 Plate Width: Raster Scan Method: Discontinuity Count: 37 Upper Threshold: 100

Import Threshold:

20%

4500mm

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Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

24 4840 Horizontal 48 40 8 Sample Silverwing uk ltd Sample 1/13/2006

1 Plate: 1600 Plate Width: Uni-Directional Scan Method: Discontinuity Count: 20 Upper Threshold: 100 Import Threshold:

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Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

24 6050 Horizontal 59 40 8 Sample Silverwing uk ltd Sample 1/13/2006

2 Plate: 1600 Plate Width: Raster Scan Method: Discontinuity Count: 17 Upper Threshold: 100

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Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

24 6050 Horizontal 61 40 8 Sample Silverwing uk ltd Sample 1/13/2006

4 Plate: 1600 Plate Width: Raster Scan Method: Discontinuity Count: 28 Upper Threshold: 100

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Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

25 2360 Vertical 50 40 8 Sample Silverwing uk ltd Sample 1/13/2006

6 Plate: 1690 Plate Width: Uni-Directional Scan Method: Discontinuity Count: 8 Upper Threshold: 100 Import Threshold:

20%

Sample Inspection Report Tank No. 8 Patch Repair Plate Locations Tank Floor Plates

During the survey the FloormapVS reporting software was used to design the patch plate locations at the client's request. All defects in excess of 55% loss of the nominal floor plate thickness were highlighted for patch repairs. The FloormapVS reporting software was used to design the patch plate locations and also produce a patch plate list detailing floor plates requiring patch plates, patch plate size and patch plate positions. The following pages show:

· · ·

View of tank floor showing patch plates as blue rectangles.

Individual floor plate print-outs with patch plate locations shown as blue rectangles. Patch plate list detailing location and size of patches required.

Tank Floor Numbering System

Tank Location Client Operator Company Outer Tank Diameter

8 Sample Sample Silverwing uk ltd 43980 mm

Import Threshold: 20%

Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

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Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

7 5890 Horizontal 60 40 8 Sample Silverwing uk ltd Sample 1/13/2006

4 Plate: 1640 Plate Width: Raster Scan Method: Discontinuity Count: 4 Upper Threshold: 100

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Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

15 6130 Horizontal 80 40 8 Sample Silverwing uk ltd Sample 1/13/2006

6 Plate: 1630 Plate Width: Raster Scan Method: Discontinuity Count: 55 Upper Threshold: 100

Import Threshold:

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Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

16 6150 Horizontal 80 40 8 Sample Silverwing uk ltd Sample 1/13/2006

5 Plate: 1630 Plate Width: Raster Scan Method: Discontinuity Count: 211 Upper Threshold: 100

Import Threshold:

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Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

17 2110 Horizontal 73 40 8 Sample Silverwing uk ltd Sample 1/13/2006

1 Plate: 1620 Plate Width: Uni-Directional Scan Method: Discontinuity Count: 42 Upper Threshold: 100 Import Threshold:

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Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

18 6040 Horizontal 61 40 8 Sample Silverwing uk ltd Sample 1/13/2006

2 Plate: 1620 Plate Width: Raster Scan Method: Discontinuity Count: 11 Upper Threshold: 100

Import Threshold:

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Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

18 6380 Horizontal 75 40 8 Sample Silverwing uk ltd Sample 1/13/2006

7 Plate: 1620 Plate Width: Uni-Directional Scan Method: Discontinuity Count: 1 Upper Threshold: 100 Import Threshold:

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Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

19 6040 Horizontal 63 40 8 Sample Silverwing uk ltd Sample 1/13/2006

4 Plate: 1620 Plate Width: Raster Scan Method: Discontinuity Count: 99 Upper Threshold: 100

Import Threshold:

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Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

20 6140 Horizontal 60 40 8 Sample Silverwing uk ltd Sample 1/13/2006

3 Plate: 1630 Plate Width: Raster Scan Method: Discontinuity Count: 48 Upper Threshold: 100

Import Threshold:

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Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

20 6060 Horizontal 65 40 8 Sample Silverwing uk ltd Sample 1/13/2006

5 Plate: 1630 Plate Width: Raster Scan Method: Discontinuity Count: 80 Upper Threshold: 100

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Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

22 6180 Horizontal 64 40 8 Sample Silverwing uk ltd Sample 1/13/2006

2 Plate: 1610 Plate Width: Raster Scan Method: Discontinuity Count: 10 Upper Threshold: 100

Import Threshold:

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Defect Colour Scheme < 20% 20% - 29% 30% - 39% 40% - 49% 50% - 59% 60% - 69% 70% - 79% 80% - 89% 90% - 100% Weld Defect

Symbols Defect Track Non-Scanned Area Plate Reference Tank Datum

Row: Plate Length: Orientation: Max discontinuity: Lower Threshold: Tank: Location: Company: Client: Date:

24 6050 Horizontal 61 40 8 Sample Silverwing uk ltd Sample 1/13/2006

4 Plate: 1600 Plate Width: Raster Scan Method: Discontinuity Count: 28 Upper Threshold: 100

Import Threshold:

20%

Visual, MPI and UT Inspection of Nozzles Sample Report Tank No. 8

Ultrasonic thickness measurements were taken internally and externally at the 12 / 3 / 6 / 9 o'clock positions around the nozzle circumference. A continuous scan was made at each position with the minimum thickness recorded. Nozzle 1, External of tank Ultrasonic readings 12 O'clock- 17mm / 3 O'clock- 17mm / 6 O'clock- 17mm / 9 O'clock- 17mm

The nozzle and nozzle plate coatings appear to be in a good condition. The Magnetic Particle Inspection detected no linear crack type indications on the nozzle or nozzle plate welds. Internal of tank Ultrasonic readings 12 O'clock- 17mm / 3 O'clock- 17mm / 6 O'clock- 17mm / 9 O'clock- 17mm

No internal nozzle coating present. The Magnetic Particle Inspection detected no linear crack type indications on the nozzle welds.

NOZZLE 2, External of tank Ultrasonic readings 12 O'clock- 8mm / 3 O'clock- 7.9mm / 6 O'clock- 8.2mm / 9 O'clock-8mm

The nozzle and nozzle plate coatings appear to be in a good condition. The Magnetic Particle Inspection detected no linear crack type indications on the nozzle or nozzle plate welds. Internal of tank Ultrasonic readings 12 O'clock- 8mm / 3 O'clock- 7.5mm / 6 O'clock- 8mm / 9 O'clock- 8mm

No internal nozzle coating present. The Magnetic Particle Inspection detected no linear crack type indications on the nozzle welds.

NOZZLE 3, External of tank Ultrasonic readings 12 O'clock- 18mm / 3 O'clock- 18mm / 6 O'clock- 18mm / 9 O'clock- 18mm

The nozzle and nozzle plate coatings appear to be in a good condition. The Magnetic Particle Inspection detected no linear crack type indications on the nozzle or nozzle plate welds. Internal of tank Ultrasonic readings 12 O'clock- 5.2mm / 3 O'clock- 5.5mm / 6 O'clock- 5.6mm / 9 O'clock- 5.5mm

No internal nozzle coating present. The Magnetic Particle Inspection detected no linear crack type indications on the nozzle welds.

Sample Report Tank 8 Scorpion B-Scan Analysis Summary

The Ultrasonic B-scans recorded during the survey have been analysed and a summary of the results are shown below. Any wall loss greater than 30% has been included in the analysis summary. All distance measurements are shown in millimetres and start from the bottom of each course / strake.

Scan 1 Course 1 Nominal Plate Thickness 12.0 mm

Defect starts n/a

Defect ends n/a

Maximum Loss n/a

Observations Scorpion B-scan was unable to achieve sufficient data due to surface conditions. Therefore a manual scan using the Krautkrammer USM 25 ultrasonic set was performed in this area.

Scan 1 Course 2 Nominal Plate Defect Thickness starts 10.0 mm 1240mm Scan 1 Course 3 Nominal Plate Thickness 8.0 mm

Defect ends 1260mm

Maximum Loss 30%

Observations Localised corrosion

Defect starts 150mm

Defect ends 170mm

Maximum Loss 30%

Observations Localised corrosion

Scan 1 Course 4 Nominal Plate Thickness 6.0 mm

Defect starts n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 1 Course 5 Nominal Plate Thickness 6.0 mm

Defect starts n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 2 Course 1 Nominal Plate Thickness 12.0 mm

Defect starts n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 2 Course 2 Nominal Plate Thickness 10.0 mm

Defect starts n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 2 Course 3 Nominal Plate Defect Thickness starts 8.0 mm 1530mm Scan 2 Course 4 Nominal Plate Thickness 6.0 mm Scan 2 Course 5 Nominal Plate Thickness 6.0 mm

Defect ends 1550mm

Maximum Loss 50%

Observations Localised corrosion.

Defect starts 240mm

Defect ends 260mm

Maximum Loss 40%

Observations Localised corrosion.

Defect starts n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 3 Course 1 Nominal Plate Thickness 13.0 mm

Defect starts n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 3 Course 2 Nominal Plate Defect Thickness starts 10.5 mm 1690mm Scan 3 Course 3 Nominal Plate Defect Thickness starts 8.0 mm 1530mm Scan 3 Course 4 Nominal Plate Thickness 6.0 mm

Defect ends 1720mm

Maximum Loss 40%

Observations Localised corrosion.

Defect ends 1550mm

Maximum Loss 50%

Observations Localised corrosion.

Defect starts 0mm

Defect ends 1800mm

Maximum Loss 100%

Observations Corrosion detected along the entire width of plate C4/4. Holes were detected.

Scan 3 Course 5 Nominal Plate Thickness 6.0 mm

Defect starts 0mm

Defect ends 850mm

Maximum Loss 100%

Observations Holes were detected.

Scan 4 Course 1 Nominal Plate Thickness 12.5 mm

Defect starts n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 4 Course 2 Nominal Plate Defect Thickness starts 10.5 mm 1000mm

Defect ends 1280mm

Maximum Loss 30%

Observations Corrosion areas were detected

Scan 4 Course 3 Nominal Plate Thickness 8.0 mm Scan 4 Course 4 Nominal Plate Thickness 6.0 mm

Defect starts 210mm

Defect ends 230mm

Maximum Loss 30%

Observations Localised corrosion.

Defect starts 0mm

Defect ends 1800mm

Maximum Loss 100%

Observations Corrosion detected along the entire width of plate C4/4. Holes were detected.

Scan 4 Course 5 Nominal Plate Thickness 6.0 mm

Defect starts 0mm

Defect ends 960mm

Maximum Loss 100%

Observations Holes were detected on plate C5/4.

Scan 5 Course 1 Nominal Plate Thickness 12.0 mm

Defect starts n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 5 Course 2 Nominal Plate Defect Thickness starts 10.0 mm 1670mm Scan 5 Course 3 Nominal Plate Defect Thickness starts 8.0 mm 1730mm

Defect ends 1690mm

Maximum Loss 30%

Observations Localised corrosion.

Defect ends 1750mm

Maximum Loss 90%

Observations Possible holed area on plate C3/4.

Scan 5 Course 4 Nominal Plate Thickness 6.0 mm

Defect starts 0mm

Defect ends 1800mm

Maximum Loss 100%

Observations Corrosion detected along the entire width of plate C4/5. Holed areas were detected.

Scan 5 Course 5 Nominal Plate Thickness 6.0 mm

Defect starts 0mm

Defect ends 960mm

Maximum Loss 90%

Observations Corroded areas were detected on plate C5/4.

Scan 6 Course 1 Nominal Plate Thickness 12.5 mm

Defect starts n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 6 Course 2 Nominal Plate Defect Thickness starts 10.5 mm 1000mm

Defect ends 1280mm

Maximum Loss 30%

Observations Corrosion areas were detected

Scan 6 Course 3 Nominal Plate Thickness 8.0 mm Scan 6 Course 4 Nominal Plate Thickness 6.0 mm

Defect starts 210mm

Defect ends 230mm

Maximum Loss 30%

Observations Localised corrosion.

Defect starts 0mm

Defect ends 1800mm

Maximum Loss 100%

Observations Corrosion detected along the entire width of plate C4/5. Holed areas were detected.

Scan 6 Course 5 Nominal Plate Thickness 6.0 mm

Defect starts 0mm

Defect ends 960mm

Maximum Loss 90%

Observations Corroded areas were detected on plate C5/4.

Scan 7 Course 1 Nominal Plate Thickness 12.0 mm

Defect starts n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 7 Course 2 Nominal Plate Defect Thickness starts 10.0 mm 1740mm Scan 7 Course 3 Nominal Plate Defect Thickness starts 8.0 mm 1430mm Scan 7 Course 4 Nominal Plate Thickness 6.0 mm

Defect ends 1760mm

Maximum Loss 30%

Observations Localised corrosion.

Defect ends 1450mm

Maximum Loss 40%

Observations Localised corrosion.

Defect starts 880mm

Defect ends 1800mm

Maximum Loss 100%

Observations Corrosion detected along the width of plate C4/5. Holed areas were detected.

Scan 7 Course 5 Nominal Plate Thickness 6.0 mm

Defect starts 0mm

Defect ends 1500mm

Maximum Loss 80%

Observations Corroded areas were detected on plate C5/5.

Scan 8 Course 1 Nominal Plate Thickness 12.5 mm

Defect starts n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 8 Course 2 Nominal Plate Thickness 10.0 mm

Defect starts n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 8 Course 3 Nominal Plate Thickness 8.0 mm

Defect starts n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 8 Course 4 Nominal Plate Thickness 6.0 mm

Defect starts n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 8 Course 5 Nominal Plate Thickness 6.0 mm

Defect starts n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 9 Course 1 Nominal Plate Thickness 12.5 mm

Defect starts n/a

Defect ends n/a

Maximum Loss n/a

Observations Scorpion B-scan was unable to achieve sufficient data due to surface conditions. Therefore a manual scan using the Krautkrammer USM 25 ultrasonic set was performed in this area.

Scan 9 Course 2 Nominal Plate Thickness 10.0 mm Scan 9 Course 3 Nominal Plate Thickness 8.0 mm

Defect starts 830mm

Defect ends 850mm

Maximum Loss 30%

Observations Localised corrosion

Defect starts n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 9 Course 4 Nominal Plate Thickness 6.0 mm

Defect starts 0mm

Defect ends 1800mm

Maximum Loss 50%

Observations Corrosion detected along the entire width of plate C4/8.

Scan 9 Course 5 Nominal Plate Thickness 6.0 mm

Defect starts 0mm

Defect ends 720mm

Maximum Loss 50%

Observations Corrosion detected from the start of plate C5/8

Scan 10 Course 1 Nominal Plate Defect Thickness starts 12.5 mm Unable to obtain results

Defect ends Unable to obtain results

Maximum Loss Unable to obtain results

Observations Scorpion B-scan was unable to achieve sufficient data due to surface conditions.

Scan 10 Course 2 Nominal Plate Defect Thickness starts 10.0 mm 1160mm

Defect ends 1400mm

Maximum Loss 40%

Observations Corrosion areas were detected

Scan 10 Course 3 Nominal Plate Defect Thickness starts 8.0 mm n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 10 Course 4 Nominal Plate Defect Thickness starts 6.0 mm 600mm

Defect ends 800mm

Maximum Loss 30%

Observations Corrosion areas were detected

Scan 10 Course 5 Nominal Plate Defect Thickness starts 6.0 mm n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 11 Course 1 Nominal Plate Defect Thickness starts 12.5 mm n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 11 Course 2 Nominal Plate Defect Thickness starts 10.0 mm 1400mm

Defect ends 1500mm

Maximum Loss 30%

Observations Corrosion areas were detected

Scan 11 Course 3 Nominal Plate Defect Thickness starts 8.0 mm 1200mm

Defect ends 1650mm

Maximum Loss 30%

Observations Corrosion areas were detected

Scan 11 Course 4 Nominal Plate Defect Thickness starts 6.0 mm 0mm

Defect ends 1800mm

Maximum Loss 30%

Observations Corrosion detected along the entire width of plate C4/11.

Scan 11 Course 5 Nominal Plate Defect Thickness starts 6.0 mm 0mm

Defect ends 300m

Maximum Loss 30%

Observations Corrosion areas were detected

Scan 12 Course 1 Nominal Plate Defect Thickness starts 12.5 mm n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 12 Course 2 Nominal Plate Thickness 10.0 mm 10.0mm

Defect starts 790mm 1210mm

Defect ends 810mm 1230mm

Maximum Loss 30% 30%

Observations Localised corrosion Localised corrosion

Scan 12 Course 3 Nominal Plate Defect Thickness starts 8.0 mm 950mm

Defect ends 1600mm

Maximum Loss 40%

Observations Corrosion areas were detected

Scan 12 Course 4 Nominal Plate Defect Thickness starts 6.0 mm 0mm

Defect ends 400mm

Maximum Loss 30%

Observations Corrosion detected from the start of plate C4/12

Scan 12 Course 5 Nominal Plate Defect Thickness starts 6.0 mm 0mm

Defect ends 950mm

Maximum Loss 30%

Observations Corrosion detected from the start of plate C5/11

Scan 13 Course 1 Nominal Plate Defect Thickness starts 12.0 mm n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 13 Course 2 Nominal Plate Defect Thickness starts 10.0 mm n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 13 Course 3 Nominal Plate Defect Thickness starts 8.0 mm 1240mm

Defect ends 1260mm

Maximum Loss 30%

Observations Localised corrosion

Scan 13 Course 4 Nominal Plate Defect Thickness starts 6.0 mm 500mm

Defect ends 1200mm

Maximum Loss 50%

Observations Corrosion detected on plate C4/13

Scan 13 Course 5 Nominal Plate Defect Thickness starts 6.0 mm 0mm

Defect ends 200mm

Maximum Loss 30%

Observations Corrosion detected from the start of plate C5/12

Scan 14 Course 1 Nominal Plate Defect Thickness starts 12.0 mm n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 14 Course 2 Nominal Plate Defect Thickness starts 10.0 mm n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 14 Course 3 Nominal Plate Defect Thickness starts 8.0 mm 1000mm

Defect ends 1400mm

Maximum Loss 40%

Observations Corrosion detected on plate C3/13

Scan 14 Course 4 Nominal Plate Defect Thickness starts 6.0 mm 0mm

Defect ends 1800mm

Maximum Loss 40%

Observations Corrosion detected along the entire width of plate C4/14.

Scan 14 Course 5 Nominal Plate Defect Thickness starts 6.0 mm 0mm

Defect ends 1000mm

Maximum Loss 60%

Observations Corrosion detected from the start of plate C5/13

Scan 15 Course 1 Nominal Plate Defect Thickness starts 12.0 mm n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 15 Course 2 Nominal Plate Defect Thickness starts 10.0 mm n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 15 Course 3 Nominal Plate Defect Thickness starts 8.0 mm 400mm

Defect ends 1000mm

Maximum Loss 50%

Observations Corrosion detected on plate C3/14

Scan 15 Course 4 Nominal Plate Defect Thickness starts 6.0 mm 1550mm

Defect ends 1770mm

Maximum Loss 40%

Observations Corrosion detected on plate C4/15

Scan 15 Course 5 Nominal Plate Defect Thickness starts 6.0 mm 0mm

Defect ends 250mm

Maximum Loss 40%

Observations Corrosion detected from the start of plate C5/14

Scan 16 Course 1 Nominal Plate Defect Thickness starts 12.0 mm n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 16 Course 2 Nominal Plate Defect Thickness starts 10.0 mm n/a

Defect ends n/a

Maximum Loss n/a

Observations No reportable loss was detected in scanned area.

Scan 16 Course 3 Nominal Plate Defect Thickness starts 8.0 mm 0mm 8.0mm 940mm

Defect ends 450mm 960mm

Maximum Loss 50% 40%

Observations Corrosion detected on plate C3/15 Localised corrosion

Scan 16 Course 4 Nominal Plate Defect Thickness starts 6.0 mm 0mm

Defect ends 1800mm

Maximum Loss 50%-60%

Observations Corrosion detected along the entire width of plate C4/15.

Scan 16 Course 5 Nominal Plate Defect Thickness starts 6.0 mm 0mm

Defect ends 950mm

Maximum Loss 30%

Observations Corrosion detected from the start of plate C5/15

B Scan Survey Tank shell layout & B-scan positions

Sample Report Tank 8

Walkway C5/15

C5/14

C5/13

C5/12

C5/11

C5/10

C5/9

C5/8 C5/7

C5/6

C5/5

C5/4

C5/3

C5/2

C5/1

C4/15

C4/14

C4/13

C4/12

C4/11

C410

C4/9

C4/8

C4/7

C4/6

C4/5

C4/4

C4/3

C4/2

C4/1

C3/15

C3/14

C3/13

Pipe

C3/12

C3/11

C3/10

C3/9

C3/8

C3/7

C3/6

C3/5

Pipe

C3/4

C3/3

C3/2

C3/1

C2/15

C2/14

C2/13

C2/12

C2/11

C2/10

C2/9

C2/8

C2/7

C2/6

C2/5

C2/4

C2/3

C2/2

C2/1

C1/15

C1/14

C1/13

C1/12

C1/11

C1/10

C1/9

C1/8

C1/7

C1/6

C1/5

C1/4

C1/3

C1/2 Nozzles

C1/1

Nozzle Scan 16 Scan 15 Scan 14 Scan 13 Scan 12 Scan 11 Scan 10

Manway Scan 9 Scan 8 Scan 7 Scan 6 Scan 5 Scan 4 Scan 3 Scan 2

Manway Scan 1

Course 1, (12mm N.P.T) Course 2, (10mm N.P.T) Course 3, (8mm N.P.T) Course 4, (6mm N.P.T) Course 5, (6mm N.P.T) ( N.P.T) - Nominal plate thickness.

Example B-Scan Images

The images below show generic examples of B-scan images acquired using the Scorpion B-Scan System.

Figure 1 Example of non-corroded plate.

Figure 2 Example of small diameter isolated corrosion pit

Figure 3 Example of severe corrosion pitting over a large area

Sample Inspection report Ultrasonic Thickness Measurements External Floor Plates (toe) Tank ID: 8

All measurements are in millimeters

Ultrasonic thickness measurements were taken in a clockwise direction every 500mm starting from centre of manway 1

500mm 3000mm 5500mm 8000mm 10500mm 13000mm 15500mm 18000mm 20500mm 23000mm 25500mm 28000mm 30500mm 33000mm 35500mm 38000mm 41000 43500 45000 48500 51000 53500 56000 8500

7.1 7.1 7.2 7.1 7.5 7.4 7.3 7.1 7 7.4 7.5 7.9 7.9 7.3 7.1 7.5 7.8 7.8 7.2 7.1 7.1 7.8 7.2 7

1000mm 3500mm 6000mm 8500mm 11000mm 13500mm 16000mm 18500mm 21000mm 23500mm 26000mm 28500mm 31000mm 33500mm 36000mm 38500mm 41500 44000 46500 49006 51500 54000 56000 59000

7.5 7.2 7.2 7.3 7.2 7 7.4 7.9 7.2 7.4 7.2 7.1 7.8 7.8 8 7.9 7.1 7 7.2 7.9 7.7 7.8 7.2 7.2

1500mm 4000mm 6500mm 9000mm 11500mm 14000mm 16500mm 19000mm 21500mm 24000mm 26500mm 29000mm 31500mm 34000mm 36500mm 39500mm 42000 44500 47000 49500 52000 54500 57000 59500

7.4 8 8 7.9 7.2 7.1 8.1 7.3 7.7 7.5 7.2 7.2 7.9 7.9 7.1 8 7.2 7.1 7.1 7.8 7.9 7.7 7.1

2000mm 4500mm 7000mm 9500mm 12000mm 14500mm 17000mm 19500mm 22000mm 24500mm 27000mm 29500mm 32000mm 34500mm 37000mm 40000mm 42500 4500 47500 50000 52500 55000 57500 60000

7.1 7.4 8 8 7.8 7.1 8.2 7.5 7.2 7.5 7.1 7.3 7.8 7.9 8 8.1 7.5 7.4 7.7 7.8 7 7.7 7 7.3

2500mm 5000mm 7500mm 10000mm 12500mm 15000mm 17500mm 20000mm 22500mm 25000mm 27500mm 30000mm 32500mm 35000mm 37500mm 40500mm 43000 45500 48000 50500 53000 55500 58000 60500

8.1 8 8 8.2 7.5 7.2 7.1 7.2 7.3 7.3 7.5 7.1 7.2 7.2 7.5 7.9 7.6 7.3 7.7 7.2 7.9 7.1 7.9 7.1

61000 63500 66000 68500 71000 73500 76000 78500 81000 83500 86000

7 7.7 7.8 7.6 7.9 7.6 7.9 7.9 7.7 7.7 7.5

61500 64000 66500 69000 71500 74000 76500 79000 81500 84000 865000

7.9 7.7 7.8 7.6 7 7.7 7.8 7.9 7.5 7.7 7.6

62000 64500 67000 69500 72000 74500 77000 79500 82000 84500

7.5 7.7 7.7 7.5 7.2 7.5 7.7 7.7 7.7 7.6

62500 65000 67500 70000 72500 75000 77500 80000 82500 85000

7.3 7.5 7.6 7.3 7.2 7.6 7.9 7.9 7.9 7.5

63000 65500 68000 70500 73000 75500 78000 80500 83000 85500

7.8 7.6 7.5 7.7 7.7 7.8 7.1 7 7.9 7.7

1/1

1/2 2/3 3/3

1/3 2/4 3/4 4/3 4/4 5/4 6/4 6/5 7/4 8/4 8/5 9/4 10/5 10/4 10/6 11/4 12/4

1/4

2/1

3/1

2/2

Sample Inspection Report Tank 8

2/5

3/6

3/2 4/2 5/2 6/3 7/2

3/5 4/5 5/5 6/6 7/5 8/6 9/5 10/7 11/5 12/5 12/6 13/5 14/5 14/6 15/5 16/4 16/5

4/1 5/1

6/1

Roof Plate Layout

5/6

6/7

5/3

6/2

7/1 8/1 9/1 10/1 11/1 12/1 13/1

14/1

7/3 8/3

7/6 8/7 9/6 10/8 11/6 12/7 13/6

14/7

8/2 9/2 10/2 11/2 12/2 13/2 14/2 15/1 16/1

17/1

9/3 10/3 11/3 12/3 13/3 14/3 14/4 15/3 16/2 16/3 17/2 18/2

19/1

13/4

15/2

15/4

15/6

17/6

17/2

18/1

17/2 18/3 18/4 19/3

19/4

17/2

18/5

19/2

Sample Inspection Report Tank ID: 8 Ultrasonic Thickness Measurements

Roof Plates

All measurements are in Millimeters Plate 1/1 1/2 1/3 1/4 2/1 2/2 2/3 2/4 2/5 3/1 3/2 3/3 3/4 3/5 3/6 4/1 4/2 4/3 4/4 4/5 5/1 5/2 5/3 5/4 5/5 5/6 6/1 6/2 6/3 6/4 6/5 6/6 6/7 7/1 7/2 7/3 7/4 7/5 7/6 Reading 1 4.5mm 4.4 4.4 4.4 4.5 4.5 4.4 4.4 4.3 4.5 4.4 4.2 4.5 4.4 4.4 4.5 4.5 4.8 4.4 4.4 4.4 4.8 5.0 4.8 4.4 4.5 4.8 4.7 4.9 4.9 5.0 4.7 4.7 5.0 4.7 4.8 5.0 5.0 4.8 Reading 2 4.4mm 4.4 4.4 4.4 4.5 4.5 4.5 4.3 4.4 4.2 4.3 4.4 4.5 4.4 4.4 4.4 4.4 4.8 4.4 4.4 4.4 4.7 5.0 4.9 4.4 4.4 4.8 4.8 4.8 4.8 4.9 4.8 4.8 4.8 4.8 4.8 4.9 5.0 4.7 Reading 3 4.5mm 4.2 4.5 4.3 4.4 4.5 4.7 4.4 4.4 4.5 4.4 4.5 4.5 4.4 4.2 4.4 4.4 4.8 4.4 4.5 4.5 4.8 4.9 4.9 4.5 4.5 4.8 4.7 4.8 4.8 4.9 4.8 4.8 4.8 4.8 4.8 5.0 5.0 4.8 Reading 4 4.5mm 4.5 4.5 4.1 4.6 4.5 4.4 4.4 4.3 .5 4.4 4.4 4.4 4.4 4.5 4.3 4.5 4.8 4.4 4.5 4.4 4.8 4.8 4.8 4.5 4.5 4.8 4.7 4.9 4.8 4.8 4.7 4.7 4.8 4.9 4.8 5.0 4.9 4.8 Reading 5 4.5 4.5 4.5 4.2 4.4 4.5 4.5 4.4 4.4 4.5 4.5 4.4 4.5 4.2 4.5 4.4 4.4 4.7 4.4 4.5 4.4 4.8 4.8 4.9 4.4 4.5 4.8 4.7 5.0 4.8 4.8 4.8 4.4 4.8 4.9 4.9 5.0 4.9 4.8

Plate 15/1 15/2 15/3 15/4 15/5 15/6 16/1 16/2 16/3 16/4 16/5 17/1 17/2 17/3 17/4 17/5 17/6 18/1 18/2 18/3 18/4 18/5 19/1 19/2 19/3 19/4

Reading 1 4.5 4.8 4.8 4.8 4.6 4.4 4.5 4.7 4.8 4.9 4.4 4.4 4.1 4.8 4.8 4.5 4.2 4.2 4.8 4.7 4.5 4.5 4.4 4.5 4.4 4.8

Reading 2 4.4 4.8 5 4.8 4.6 4.4 4.2 4.8 4.8 4.6 4.3 4.4 4.2 0.5 4.8 4.3 4.3 4.5 4.6 4.8 4.4 4.4 4.5 4.4 4.4 4.7

Reading 3 4.5 4.8 5 4.7 4.7 4.5 4.4 4.8 4.8 4.7 4.4 4.5 4.4 4.9 4.8 4.5 4.2 4.3 4.8 4.8 4.5 4.5 4.5 4.5 4.5 4.7

Reading 4 4.4 4.8 4.8 4.8 4.7 4.5 4.4 4.7 4.8 4.8 4.3 4.4 4.4 4.8 4.8 4.4 4.5 4.4 4.7 4.9 4.3 4.4 4.4 4.6 4.4 4.7

Reading 5 4.5 4.8 5 4.8 4.6 4.5 4.5 4.9 4.8 4.8 4.4 4.4 4.2 4.7 4.8 4.3 4.1 4.2 4.8 4.8 4.5 4.3 4.5 4.5 4.5 4.

Sample Inspection Report Tank No. 8 Visual Inspection External Appurtenances

A visual inspection of the following external areas was carried out during this survey: Vertical ladder Paint condition good, no signs of distress, excessive material flaking, thinning or corrosion staining. Steps Paint condition good, no signs of distress, excessive material flaking, thinning or corrosion staining. External nozzles Paint condition good, no signs of distress, excessive material staining, thinning or corrosion staining. Compensation plates Paint condition good, no signs of distress, excessive material staining, thinning or corrosion staining. Screw thread attachments for pressure testing of compensation plates painted over. Handrail stanchions and welds (roof and steps) Paint condition good, no signs of distress, excessive material staining, thinning or corrosion staining. Roof vents and hatches Paint condition good, no signs of distress, excessive material staining, thinning or corrosion staining. Roof plates Paint condition good, no signs of distress, excessive material staining, thinning or corrosion staining. Roof wind-guard and supports Several severely corroded areas were noted on the roof wind-guard plates during this survey. The corroded areas are located directly beneath and around the support brackets for the Wind-guard. Remedial action / replacement required. The following could not be inspected visually during this survey due to access restrictions: Vertical Pipe

Sample Inspection Report Tank No. 8 Magnetic Particle Inspection / Visual Inspection External attachment welds

A magnetic particle and visual inspection of the following external attachment welds was carried out during this survey: Manway No linear crack type indications were detected during this survey. Welds appeared to be in a good condition with no significant undercut, corrosion, cracking or distortion visible. The coating appeared to be in a good condition. Compensation plates No linear crack type indications were detected during this survey. Welds appeared to be in a good condition with no significant undercut, corrosion, cracking or distortion visible. The coating appeared to be in a good condition. Roof vents and hatches No linear crack type indications were detected during this survey. Welds appeared to be in a good condition with no significant undercut, corrosion, cracking or distortion visible. The coating appeared to be in a good condition. Handrail Stanchions No linear crack type indications were detected during this survey. Welds appeared to be in a good condition with no significant undercut, corrosion, cracking or distortion visible. The coating appeared to be in a good condition. Steps / landings No linear crack type indications were detected during this survey. Welds appeared to be in a good condition with no significant undercut, corrosion, cracking or distortion visible. The coating appeared to be in a good condition.

The following external attachment welds could not be tested during this survey due to access restrictions: Vertical pipe brackets Vertical ladder brackets Roof Wind-guard Welds

Information

Tank Inspection Report

127 pages

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