ML20084C786

Preliminary AO 50-219/74/45:on 740824,commitment to Follow MAPLHGR Limits Violated.Caused by Insufficient Guidance. Reactor Power Reduced by Recirculation Flow to Point Where No MAPLHGR Limits Violated

ML20084C786
Person / Time
Site:	Oyster Creek, 05000000
Issue date:	08/26/1974
From:	Carroll J JERSEY CENTRAL POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20084C777	List: ML20084C786
References
AO-50-219-74-45, NUDOCS 8304080220
Download: ML20084C786 (5)

Text

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v V To: James P. O'Reilly "

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Directorate of Regulatory Operstiens .

Regicn I 631 Part Avenuo '

King of Prussia, Pennsylvania 19405 .

r From: Jersey Central Power G Light Co::peny Oyster Creek Nuc1 car Generating Statica Docket #50-219 Forked River, New Jersey 08731

Subject:

Abnormal Occurrence Report No. 50-210/74/45 The follotting is a prolisinary report being sdaitted' in compliance with the Tec!mical Specifications, paragraph 6.6.2.

Preliiinary Approval:

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&m e /\ i h 8/26/74 .

J.T. Carroll,[. Date

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cc: Mr. A. Gindusso

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0304080220 740830 J d . )'9 l' PDR ADOCK 05000219 ' ' < < '6 ,

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. Initial Teic;he.8 Dato of

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'8& M t' occurrence: s/24/74 ,

Initial Writtab b )Y D  ;,,5,.y Tice cf Occurrc=co,:

1100-

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.h/26/?4' Rdport Date: 4

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OYSTER CISSI NUCIEAR GENEPATING STATIO:1 FORIED RIVER, IEU JERSSY 08731 e i Abner =21 Occurrence Report No. 50-219/74/ 45 .

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IZCHTIFICAT10!! This event is censidered a violation of the cec:itzent to 0F f.u.inENCE:

fo11cw the MAPUIG2 limits as submitted on An;1st 5,1974, sesequently submitted as a chengo to the Tecnical Epscifi-1 u caticus, Sectica 3.10, on August 22, 1974.  ;

I This event is cw.sidered to be an abnormal occurrener as de- ,

fined in the Technical Specifications, p rs migh 1.153. -

CONDITIC!:3 PRIC2 Steady State EWor Routine Shutd:*n TO GhM=KS: - . Hot Standby Oporetica Cold Shutdar.a -

x Lead Changes Durtug Refus11ng Bhutdctn Routino Pc: tar Operation Routins Startup ~

Other - (,Epecify)

I Operatico ,

g Power: Reactor,1910.7 Ct Electric, 644 N:fe Flew: Racirc.,15.3 X 10 9gp-a Feed., 7.14 X 10 6 lb/hr Stack Gas: 11,200 pC1/sec WJPTICM Folicering a load reduction comencing at 2200, August 23, 1974, OF Om?MCE:

for M31V Full Closure Tests and subsequent load increase com-i mencing at 0245 on August 24, 1974, completed at 0900,the reactor was operating at essentially rated power (1910.7 Mft ' f and G44 Nfe). Pron approximstely 0915 to 1115, while at rated 1

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pwer, the xenon transient initiated by the load reductica and i

subsequent increase caused the MAPU!GR limit for_ the Type II  ?

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3 e Oi s e=eties icested at Coro hctes 27-s 37-Id. .

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16-16 and 16-38 to be exccoded. *

L, ,b. , J. 4 Design Proceduro APPOT CAUSE 7 Manufacture _ Ltiu

ual Cervics Conditics Inc. Envi'ren=c=ts)

OP OCWRRDO: ' Installation / Component Failuro

~ Construction other (Specify) 1 perator O i

when the MAPU!GR for Type II fuel was checked et 0015.and i

< g found to be at 97.8% of its limit, centrol of the APUICR was I i

Mcu-attempted by inserting several groups of ccatrol rods.

aver, at 1100 when the MAPu!GR for Typo !! fuel was ajaTf'$*"2'%

q checked, it was ivund thct th"o control reds had not effcetively r Recirculatial ficw, l controlled far APUlGR for Type II fuel.

sad thus reactor power, was subsequently decreased to.reestab-lish the MAPUlGR for Type II fuci below its litit, as verified at 1115.

APU1GR Time of Licit  % of_ Limit MAPUiGR Geck _ Calculated 12.18 97.8%

0915 11.91 12.18 100.9% ,

1100 12.29 88.4t, 10.76 12.18 1115 In the event of a Loss of Coolant Accident (thCA), the Typo

1. !ALYSIS OF OCWRPS CB:

II fuoi assezblics located at Coro Coordinates 37-38 and its quarter core symmetric locations may have exceeded ths .2200'F peak clad temerature and 171r, local actal/ water naction limit as determined in accordance with 10CFR50, Appendix K, calculated using a prolininary General Electric blowdown nalysis.

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M sipiesmass of this' event was MMdsed bys+ the ?5su

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extent of the lidt excess and by tp relatively sAbert taas ' . .a ;

duration of its existence, approximately aos to two hours 4

I maximum.

j 00RE CTIVE 1he copiset personnel were notified (as specified in ACT15:

Standing Order No.18) and'the reactor power was.teduced by recirculation flow to the point where no MAPWGR limits were violated.(1779 left,.50510fe). ' 1his power lovsk was mainasised

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for six hours, then a gradual power increase to rated:vas effected.

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PA11ARE DATA:- Not applicable. - 1 a O D 64 b

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