ML20210A316
| ML20210A316 | |
| Person / Time | |
|---|---|
| Site: | Millstone, 05000000 |
| Issue date: | 01/21/1974 |
| From: | Switzer D MILLSTONE POINT CO. |
| To: | Skovholt D US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML20209J032 | List:
|
| References | |
| FOIA-87-40 733, NUDOCS 8705050062 | |
| Download: ML20210A316 (2) | |
Text
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B MILLSTONG
'. POINT COMPANY HART CRO ONNECTICUT C6Gi A NCRTHEAST UTruflES COvPANy 203-666-6911 January 21, 1974 p--~
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Mr. Donald Skovholt
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Assistant Director for Operating Reactors i
Directorate of Licensing J/
Office of Regulation m
U.S. Atomic Energy Commission 9
,7 Washington, D. C.
20545 L-a
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Dear Mr. Skovholt:
The enclosed summary of safety / relief (S/R) valve operation is forwarded in response to Part 1 of your letter of December 19, 1973.
July - December 1970 4m 6.,1) 12-30 All three S/R valves were manually lifted with reactor pressure R at 980 psig during startup test program.
Januar/ - June 1971 4~n 1) 1-10 The A and B S/R valves lifted automatically during the startup 2
test program after an unscheduled MSIV closure.
- 2) 2-14 All three valves were manually lifted with reactor pressure at I
1000 psig; this was done as part of the startup test program.
- 3) 2-16 The C S/R valve was manually lifted with reactor pressure at i
1000 psig; held open for 30 seconds.
Valve was weeping prior to manual lift and reseat.
- 4) 2-18 The C S/R valve was manually lifted with reactor pressure at i
1000 psig; held open for 30 seconds. Test was performed after completion of maintenance work on valve.
- 5) 3-28 The B S/R valve was manually lifted with reactor pressure at i
1000 psig; held open for 30 seconds.
6) 5-12 The A S/R valve was manually lifted for a few seconds with reactor ;
pressure at 1000 psig.
Valve was lifted after fix of leak in air line to valve.
- 7) 5-31 The C S/R valve was manually lifted for 15 seconds with reactor pressure at 1000 psig.
Valve was lifted to stop slow seat leakage.
- 8) 6-20 The C S/R valve was manually lifted for 15 seconds with reactor l
pressure at 1000 psig to eliminate slight seat leakage.
//
July - December 1971
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- 1) 9-20 The B and C S/R valves were manually lifted for 15 seconds with 2
reactor pressure at 1000 psig.
- 2) 10-10 The B S/R valve lifted at approximately 1040 psig and did not i
reseat until approximately 260 psig; this was an uncontrolled blowdown.
8705050062 870428
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MMA 40 PDR
Page 2
- 3) 10-22 The B S/R was manually lifted and reseated with reactor pressure I
at 100 psig.
Valve was noted leaking by seat on drywell inspection.
- 4) 10-25 All three S/R valves were manually lifted and reseated with reactor pressure at 1000 psig. Test lift was conducted following
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valve maintenance.
- 5) 11-02 All three S/R valves were manually lifted and reseated with reactor pressure at 1000 psig.
Valves were lifted in accordance with surveillance requirements of Technical Specifications.
M January - June 1972 i y eo -
None b
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July - December 1972 None January - June 1973
- 1) 3-04 All three S/R valves were automatically lifted with reactor at 100 psig.
Valves were lifted to meet Technical Specification surveillance requirements after refuel outage.
July - December 1973
- 1) 9-22 All three S/R valves were manually lifted for 15 seconds with reactor pressure at 1000 psig.
Valves were lifted to meet
-r Technical Specification requirements when FWCI inoperable.
Very truly yours, THE MILLSTONE POINT COMPANY
[Ob D. C. Switzer President DCS/smb
.