Read Microsoft PowerPoint - TREEO-2010.10th.Ed [Compatibility Mode] text version

USC 10th Edition Paul H. Schwartz, Chief Engineer

2010 UF TREEO Conference

17 February 2010

USC Manual of CCC

· 9th Edition - Published Dec `93 · 10th Edition

­ Update started January 1997

· MRC ­ 22 meetings

USC 10th Edition

­ Released January 2010

Foundation for Cross-Connection Control and Hydraulic Research

Paul H. Schwartz Chief Engineer

Manual - 10th Edition

· Many changes/modifications

­ What will help Testers?

· Chapter 3 ­ Hydraulics, operation of backflow preventers · Chapter 9 ­ Field Test Procedures, more thorough detailing · Appendix ­ Optional guidelines

Manual - 10th Edition

· Many changes/modifications

­ What will help Specialists?

· Chapter 3 ­ Hydraulics of backflow · Chapter 4 ­ CCC Program elements · Chapter 5 ­ CCC Surveys · Chapter 6 ­ Facilities · Chapter 7 ­ Equipment · Chapter 8 ­ Sample documents, installation guidelines

Manual - 10th Edition

· Chapter 1

­ Definitions

· Revised/Updated · New Terms

­ DCDA Type II ­ RPDA Type II

Manual - 10th Edition

· Chapter 2

­ History

· Early development of CCC programs · Early patents for equipment · Establishment of FCCCHR

2010 UF TREEO Conference 17 February 2010

1

USC 10th Edition Paul H. Schwartz, Chief Engineer

Manual - 10th Edition

· FCCCHR

­ Directors

· Dr J.J. Lee (25 years)

Quiz ­ Which Edition??

· Requirement for in-line repairability?

­ 4th Edition -1969

· New Standard for SVB?

­ 9th Edition -1993

­ Publications

· Paper #5 (1948) · Manuals

­ New features of each edition

· "Device" changed to "assembly"

­ 7th Edition -1985

Manual - 10th Edition

· Chapter 3

­ Hydraulics

· Properties of fluids · Principles of backflow · Operation of backflow preventers

­ Detailed operating characteristics » DC, RP, PVB, SVB

Chapter 3 - Hydraulics

· Properties of water

Chapter 3 - Hydraulics

· Operation of check valves

Chapter 3 - Hydraulics

· Operation of check valves

The operation of a check valve is a balancing act. Forces act on each side of the check valve, and the check valve will react (i.e., open and close) to these forces.

2010 UF TREEO Conference 17 February 2010

2

USC 10th Edition Paul H. Schwartz, Chief Engineer

Chapter 3 - Hydraulics

· Operation of check valves

Chapter 3 - Hydraulics

· Operation of check valves

Chapter 3 - Hydraulics

· Operation of components in RP

Chapter 3 - Hydraulics

· Operation of Relief Valve

Chapter 3 - Hydraulics

· Overall operation of RP

Manual - 10th Edition

· Chapter 4

­ Cross-Connection Control Programs

· Elements

­ ­ ­ ­ ­ Authority Backflow preventers Certified personnel Defensible Records Education

2010 UF TREEO Conference 17 February 2010

3

USC 10th Edition Paul H. Schwartz, Chief Engineer

Manual - 10th Edition

· Chapter 5

­ Cross-Connection Control Surveys

· Preparation · Conducting · Reporting

Manual - 10th Edition

· Chapter 6

­ Typical facilities requiring backflow protection

· · · · · · Services Manufacturing Food Processing Medical Restricted Others

Manual - 10th Edition

· Chapter 7

­ Water Using Equipment

· Description · How it works · How is water connected

Manual - 10th Edition

· Chapter 8

­ Sample Letters & Forms ­ Installation guidelines

· Service connection · Internal

­ Model Ordinance

Manual - 10th Edition

· Section 9 - Field Test Procedures

­ Many Updates ­ Clarify diagnostics/troubleshooting ­ New procedures

· DCDA-II · RPDA-II

Manual - 10th Edition

· Section 9.2 -- Reduced Pressure Principle Backflow Prevention Assembly (RP)

­ 9.2.1 ­ Five needle valve field test kit ­ 9.2.2 - Two needle valve field test kit ­ 9.2.3 ­ Three needle valve field test kit

2010 UF TREEO Conference 17 February 2010

4

USC 10th Edition Paul H. Schwartz, Chief Engineer

Manual - 10th Edition

· 9.2 RP - Fully illustrated versions for 2, 3, & 5

Manual - 10th Edition

· 9.2.3 ­ Three needle valve field test kit

­ Re-establishing the differential pressure reading

Manual - 10th Edition

· 9.2.2 ­ Two needle valve field test kit

­ Relief valve opening point

Manual - 10th Edition

· 9.3 Double Check Valve Assembly

­ 2, 3, & 5 Needle valve field test kits

Field Test Kit Configurations ­ the illustration box to the right will be inserted for each step of the field test procedures where the needle valves are operated. Two Needle Valve ­ Open/Close the high side bleed needle valve when indicated in the procedures. Three Needle Valve ­ Fully open the bypass needle valve before starting the procedure, then open/close the high side bleed needle valve when indicated in the procedures

Two Needle Valve

Three Needle Valve

Manual - 10th Edition

· 9.3 Double Check Valve Assembly

­ 2, 3, & 5 Needle valve field test kits

Manual - 10th Edition

· 9.4 Pressure Vacuum Breaker Assembly

­ 2, 3, & 5 Needle valve field test kits

2010 UF TREEO Conference 17 February 2010

5

USC 10th Edition Paul H. Schwartz, Chief Engineer

Manual - 10th Edition

· Location of Field Test Kits

Manual - 10th Edition

· PVB - Location of Field Test Kits

Manual - 10th Edition

· Section 9 - Field Test Procedures

­ Preliminary Steps

· "Field Test Kit" vs "gage" · Flushing test cocks

­ Fully? ­ Foreign material ­ Verify pressure is available

Manual - 10th Edition

· Section 9 - RP Field Test Procedures

­ 1st Check Valve

· Eliminate recommendation for 3.0 PSID Buffer · Establish Minimum 5.0 PSID

· Legend for illustrations

­ Check valves open/closed » Flowing/static ­ Testcocks open/closed

Manual - 10th Edition

· Section 9 - RP Field Test Procedures

­ 2nd Check Valve Direction of Flow

· Only Valid if No. 2 Shutoff Valve is Tight

Info in Appendix A

Manual - 10th Edition

· Section 9 - DC Field Test Procedures

­ Bleed Valve Arrangement

· ¼"ø fittings

­ Different Size

· For ½ " or ¾" testcock · How much flow and still maintain accuracy

2010 UF TREEO Conference 17 February 2010

6

USC 10th Edition Paul H. Schwartz, Chief Engineer

Bleed Valve Arrangement

Swivel Connection Limited to ½ turn Larger flows

2010 UF TREEO Conference 17 February 2010

7

USC 10th Edition Paul H. Schwartz, Chief Engineer

Manual - 10th Edition

· Section 9 ­ PVB Field Test Procedures

Manual - 10th Edition

· Section 9 ­ PVB Field Test Procedures

­ New Language

· · · · · Air Inlet leaking upon arrival Leaking shutoff valve No. 2 Elevation of field test kit Air inlet does not open Air inlet fully open

­ Remove hose and drain

Manual - 10th Edition

· Section 9 - SVB Field Test Procedures

­ Test Check Valve, then ­ Test Air Inlet Valve

Manual - 10th Edition

· Section 9 - SVB Field Test Procedures

­ New Language

· Leaking shutoff valve No. 2 · Elevation of field test kit · Recommend filling top of air inlet valve

­ Aid in determining opening point

· Air inlet does not open · Air inlet fully open

­ Remove hose and drain

Manual - 10th Edition

· Section 9 - DCDA/RPDA Field Test Procedures

­ New Language ­ Appendix A

· Test Detection of flow

­ Water meter turns with down stream flow

Manual - 10th Edition

· Test Detection of flow

· Water meter turns with down stream flow

· Bypass piping open/plugged?

2010 UF TREEO Conference 17 February 2010

8

USC 10th Edition Paul H. Schwartz, Chief Engineer

Manual - 10th Edition

· Bypass piping open/plugged?

Manual - 10th Edition

· Section 9 - DCDA-II / RPDA-II Field Test Procedures

­ New Assemblies

· Field test similar to DCDA/RPDA

Manual - 10th Edition

· Section 10 - Backflow Prevention Assembly Standards

­ Proposed Modifications

· Elastomers - No hardness limitations · New Assemblies

­ DCDA II ­ RPDA II

· Field Test Kits (gages)

Elastomer Requirements - 9th

· Required Durometer hardness

­ Check Valves ­ 35-45 `A' scale

· Relatively soft

Durometer hardness of Elastomer

­ RP Relief Valve ­ 55-65 `A' scale ­ Air Inlet Valve ­ 65-75 `A' scale

2010 UF TREEO Conference 17 February 2010

9

USC 10th Edition Paul H. Schwartz, Chief Engineer

Manual - 10th Edition

· Section 10 ­ Test Kit Standard

­ General Design Requirements ­ Performance Requirements

· Accuracy +/- 0.2 psid

­ Ascending and descending scale

Manual - 10th Edition

· Section 10 ­ Test Kit Standard

­ Durability

· Pressure On/Off · Temperature

· Durability

Manual - 10th Edition

· Section 10 ­ Field Test Kit Standard

­ Approval

· All new submittals · No grandfathering

Periodic Field Test Kit Testing

· Appendix A ­ Recommended Guidelines

­ Accuracy Verification Annually ­ Traceable to NIST

· National Institute of Standards and Technology

­ Administrative authorities

· "IF" Approval is recognized

­ Timetable of adoption ­ Implementation

­ Test with water/gas ­ Descending scale at 12, 8, 5, 2, 1 psid

· ±0.2 psid

· Accuracy verification

­ Not part of Approval

­ Pressure test for leaks

· Minimum 175 psi

CD - ROM

· A CD-ROM is also included on the inside back cover which provides:

­ ­ ­ ­ ­ Model ordinance Forms Letters Backflow incidents (Excel table) Sample of DC field test DVD

Questions

2010 UF TREEO Conference 17 February 2010

10

Information

Microsoft PowerPoint - TREEO-2010.10th.Ed [Compatibility Mode]

10 pages

Report File (DMCA)

Our content is added by our users. We aim to remove reported files within 1 working day. Please use this link to notify us:

Report this file as copyright or inappropriate

148231


Notice: fwrite(): send of 196 bytes failed with errno=104 Connection reset by peer in /home/readbag.com/web/sphinxapi.php on line 531