ML19289G089
| ML19289G089 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 05/30/1979 |
| From: | Johari Moore GENERAL PUBLIC UTILITIES CORP. |
| To: | Kunder G GENERAL PUBLIC UTILITIES CORP. |
| References | |
| TSG-198, NUDOCS 7906260270 | |
| Download: ML19289G089 (3) | |
Text
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Inter-Office Memorandum u.
6
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<.C' fr May 30, 1979 Cec o I r
Service Subwct RB Su=p level,) Ze ro Gage Se tting To G. A. Kunder Loca::on Dil Le following Procedure is to followed for adjusting the Reactor Building Surp Wa te r Pres sure Ga,;..
De objective of this Procedure is to assure that a coluta of water will not exist in the instrumentation line during ::ero adjust =ent of the gage.
Existing unbalanced water columns will cause error in the ceasurement of sump levels.
This Procedure ;upplements Procedure - Z-93.
1.
Close valves DH-V2013 and Eli-V202E.
2.
Cpen valves VA and VB to relieve any accu =ulated pressure.
3.
Recove the Heise Cage from its counting and raise the Cage with the attached tubing to a level above the highest point of the tubing to assure drainage.
4.
Disconnect the tubing from the Heise Gage allowing it to drain into the Carboy Filter.
5.
Rotate the ' TEE' connection to valve VA so that it is in a horizontal pcsition.
6.
Mount the gage in a position so that the gage connection is
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above the connection to valve VA.
7.
Install tubing and a vent valve VC per sketch in a mar.ner that will assure a slope f rom the gage connection to the valve VA connection.
NOTE:
Loops that could cause loop seals are not permitted.
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RB Su=p Lvel. Zero 9 age Setting
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~W es : Ti-2__.. wS u >c c c. L fuV(3 $\\OE 1 E LAJ 8. Adjust zero gage setting with valve VC open. 9. Close valves VA, VB and VC. 10. Attach a water source to vent valve "VB". NOTE: The water source is not to be pressurized above 400 inches of water. 11. Open valves VB, VA, and VC to veat and fill the sistem up to the Heise Gage. The Bourdon Tube in the Heise Gage is not to be vented. 12. Closc Valve VC. 13. Close Valve VB. 14. Close Valve VA. 15. Open Valves DH-V201B and DH-V202B. 16. Instruct control room to open DH-V5B. Check instrument connections for leaks. If contections leak shut DH-V202B and DH-V201B and stop leaks then reopen DH-V202B and DH-V201B. 17. Measure and record the distance from the gage center line to the floor. 18. Record the reading f rom the 0-100 PSIG Gage. 19. Continue in accordance with Procedure Z-93 steps 4.1.11 through 4.1.15. ') F, 4 EJj q rj l'a C
RB Sump Level, Zero Gage Setting Page 3 20. If direction has been given for conti in accordance with Procedure Z-93 nuous shif t monitoring, proceed Section 4.2 otherwise, with steps 4.1.16 through 4.1.19. p roceed //% / v U J. P. Moore, Jr. JPM/RG/j ed cc: J. G. Herbein R. C. Arnold ,3 :. c J. Collins D. Weave r R. Greenwood R. Wilson N ~ f /_. J l /_ L' I O E O}}