ML19323A593
| ML19323A593 | |
| Person / Time | |
|---|---|
| Site: | Duane Arnold  |
| Issue date: | 04/19/1977 |
| From: | Roy G, Thompson D, Whitt K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| References | |
| FOIA-79-149 PNO-III-77-050A, PNO-III-77-50A, NUDOCS 8004210429 | |
| Download: ML19323A593 (1) | |
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3 PREL1'11 NARY I:0TITICA't10N
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April 19, 1977 PRELI!'INARY NOTIFICA'l10N Or i VrNT Olt 1l';t'St'AL OCCL'H4ENCE--PNO-77-50A This preliminary notif lent ion camst i t ut et. 1:ARLY not f re of an event of POSSillLE na f at v or p,u,b1,1,c f,n,1,e, rest s ign if ic anc e.
't he luf or: at ion presented ls as initialle received without verifiention or evaluation and is, basically ni,1_t_ hat is known hv in staff on this date.
Faci,11ty:
lown riectric Light and Power Conpany, Duane Arnold (Docket No. 50 ~ Ell), Palo, Iowa
Subject:
'!AIN STTA" PRESSI ME RELIEr VALVES The licenaec reported the failure of six main stenn relief valves manufactured by Drcuner industries on !! arch 29 and 'l0, 1077.
Tour valves did not open and two valves opened, but at an elevated pressure.
This information van reported in PNO-77-50.
Region III (Glen Ellyn) was Inforred by the licensee that testinP, of re-nasembled valves did not completely resolve the questlon of the failure.
mode. Accordingly, the licensee han initiated action to replace the Dresser valven with valves manufacturnd by Target Rock. It in estimated that this modification will delay startup for two vecks. Regjon III will continue to follow the licensee's evaluation of the failure of the Drcsser valves to determine if there are any generic considerations.
'tedia interest is not expected.
Region III (Glen Ellyn) received notification of this information by telephone from the onnite inspector at 11:00 a.m. on April 19, 1977.
Contacy KINhit t, 1E x27261 Gb'Roy, IE x27261 DThenpuon, IE x27541 Distribution:
Transmitted 11 St [dl-Chairman Rowden C. C. Kan.erer, CA G. F. '!urphy, JCAE Commissioner G111nsky S. J. Chilh, SECY 11.11. L'hiteside, SCNR
- 11. R. !!yers, llCEE Tranumitted:
MNBil.C 6 P Bldg SS Bldg,,_ _ ;
L. V. Gossick, EDO B. C. Rusche, NRR K. R. Chapman, N'!SS S. II. llanauer, EDO
- 11. K. Shapar. ELD J. A. Harris, PA W. G. !'cDonald, 'llPC Luge,(mal,1);
E. Volgenau, Jr R. G. Ryan, OSP T. J. McTiernan, 01A Region PRELI!!1 NARY ! 0TITICAT10N 8004210 g
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