ML19323F643
| ML19323F643 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear, Crane  |
| Issue date: | 10/29/1974 |
| From: | Kaelin J BABCOCK & WILCOX CO. |
| To: | James Anderson ARKANSAS POWER & LIGHT CO. |
| References | |
| TASK-TF, TASK-TMR SOM-494, NUDOCS 8005290265 | |
| Download: ML19323F643 (2) | |
Text
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suy 9, m r a Babcock & Wilcox e ~ rcen-etienc, con P.O. Box 1260, Lynchburg. Va. 24505 Telephone: (804) 384-5111 October 29, 1974 SOM-494 Arkansas Power and Light Company d
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Arkansas Nuclear Cne, Unit-1 Rassellville, AR 72801 rjCi 2 3 W 4 gggusAs POV'ER & UGHT C0.
Attention: Mr. J. W. Anderson, Jr.
gggsAs HU;1. EAR ONE
Subject:
ACCEPTANCE CRITERIA CN PFSISUPlZER ElEL
Dear Mr. Andersen:
'Ihe recent scheduled reactor trip of ANO-1 frca 405 FP resulted in the pressuriner.
level varying frca 180 inches to a minimum of 34 inches. The test precedure
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hc acceptance criteria for pressurizer level limits the variation in level to 180 inches 140' inches, which puts the level reached deing the trip test slightly below the minimum.
The 40 inch level is abcVe the highest pressurizer heater 'cank ard is the heater power cutoff. Ltring nonral pressurizer operatien the level must be raintained between 40 and 320 inches indicated for the entire system to autcmatically restcre the designed RC pressure and pressurizer level.
During a reactor trip the only rec,uimment which should be $mposed onthe pressurizer is that the level remain within 0 aid 320 inches indicated. The location of the level indication taps ensures that there is a sufficient volume of reacter coolant in the pressurizer at 0 inches indicated and that a steam bubble still exists when the level is 320 inches indicated.
The design of the pressurizer is such that the volt:r.e cf water re-*.ir6 in the pressurizer would not be sufficient to keep all the heater banks covered durir4 the cooldet.n of the reacter coolant following a reactor trip, but was sized to keep the lcwer head carpletely full during a reacter trip fran 100% FP.
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8 0052 9 0.2.h5 The Babcock & Wilecx Comoany 7 Established 1867
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babcock & W:COX O
It. J. W. Anderson, Jr.
SOM-494, Page 2 October 29, 1974 TheacceptancecriteriacurrentlyinTP800.l4, Turbine /ReactorTripTest, should be revised to apply cnly to non:sl pressurizer system cperation (prior to reactor trip) and another acceptance criteria of 0 to 320 inches indicated, be established for the transient associated with a reactor trip.
If you have any questions, please do not hesitate to call.
i Very truly ycurs, i
TIE BABCCCK AND WILCOX CCEPANY J. N. Kaelin Site Operaticns Mar.ager JNK/ JAP /sp cc:
R. Culp (AP&L)
Q W. Cavanaugh III (AP&L)
C G. H. Miller (AP&L)
I T. Cogburn (AP&L)
R. J. McConnell H. J. Worsham G. M. Olds K. R. m i son J. F. Walters O
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