ML20084U197
| ML20084U197 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 03/21/1975 |
| From: | Kalivianakis N COMMONWEALTH EDISON CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| Shared Package | |
| ML20084U194 | List: |
| References | |
| NJK-75-146, NUDOCS 8306270463 | |
| Download: ML20084U197 (1) | |
Text
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~ yOP ound.cn.ssenersting stauorr S
ostOmos Box 216'
'i-Cordova.lilinois 81242
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Telephone 309/654-2241; g',
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e s-ji Toiecopy:- RegTon. Til, Attention.: Mr C. Feierabend. 7,
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March II, 1975.,
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Keppler, Regional Director
'F Directorate-of Regulatory Operations-
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2.[ < U S. Nuclear Regulatory Commission
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4 799 Roosevelt Hoad
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Glen Ellyn, I i i Tnois _ 6013T:
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ssR forencer Quad-Cities Nuclear Power Station, Unit I Ql ?
p Docket No. 50-254, DPR-29
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,y Append fx A Sect ions 1.0. A.2, 3.1, 6.6 8.1.a.. ^ ',4
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Oscr Mr. lGepprier:
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l i. Tha purpose of this letter is to provide you with notifTcation of an Abnornsi-
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.'. Occurrence as required by Technical Specification 6.6.B.I.a. within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of.
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'T k tha occurrence
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p At 3:00 p.m.. on March 20, 1975, witit Unit i operating'at 824 Mwe, quarterly-
[(. survalliance testing revealed that turbine EHC control fluid low pressure switch-g 1-5600-PS-2 tripped at 885 psig decreasing.
This exceeded the limit of n 900 G,psig required by TechnTcal Specifications Table 3.I.1.c.
w Aft 9r cyc! Tng the pTstort several times, the pis torr. movement became nore-free,-
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cnd without adjustment, the setpoint returned to 930 psig. 5 psig.below its-p normal.setpoint.
It is believed that the piston.assembTy may be worn Tha worn ~
l piston assembly wf!! be replaced, and the piston assemblies of the other pressure ~
4 switches will be inspected as soon as 'possible..
' ;This occurrence was discussed by-telephone with Mr. Felerabend of your office on M rch 21,1975.
Further information will b., provided by Abnormal Occurrence p, R2 port AO' 50-254/75-7 which. wr1T be submit':ed within 10 days of the date of this occurrence-
'f Vory truly yours,.
y COMMONWEALTH EDI. SON. COMPANY U
QUAD-CITIES NU EAR POWER. STATION' l f
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N.. J. Ka!!vianakis Stati.on Supstintendent NJK/SRH/Jeb i
' cer Directorate. of LTcensing-J. S. Abel 8306270463 750327
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