ML20024B441

Forwards Rev to Interim Operating Mgt Recommendations for Curtailing NSSS Maneuvering Rates.Encl Rev Should Clarify Recommendations Provided in

ML20024B441
Person / Time
Site:	Crane
Issue date:	08/06/1974
From:	Rogers L BABCOCK & WILCOX CO.
To:	Hervein J METROPOLITAN EDISON CO.
References
TASK-*, TASK-GB GPU-2515, SOM-277, NUDOCS 8307080735
Download: ML20024B441 (2)

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BfOcOc!c a WilcOx c..nro,c,.s P.O. Bos 1260.Lynchbr3. Va. 245CS i

Tete; hone (70313845111 6

l A=aust 6. 1976 Sc < ~

l Mr. J. C. Herbein i

Metropolitan Elison company Post Office Boz LSO Nfdatetown, FA 17057 f

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Subject:

Clarification of Maneuvering Hestriction References L. C. Rogers letter to J. G. Herbein dated July 17,1974(SCM265)

Dear Mr. Eerbeins.

e The above reference forwarded the latest revision to Bf.V'.s Interin Operating I

It Macagement RecermanAntions for ctrtaf1tre NSSS naneuvering rates.

l has ccmae to =ry attention that the wortiing of this reference has created some confusion. Inclosed is a re-wordics of the above reference. It is hoped that this vill dissolve act points of confusion.

I Very truly yours, V

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I L. C. Rogers Site Operations Engineer l

T4R/ RAG /caas Enclosure g

ces G. F. Miller B. J. McConnell W. R. Gibses l

l E. N. Ease bee: V. N. Schrie J. F. O'Esales E. A. Covers J. E. Floyd I

V. J. Asynood R. J. Tools TheDancocaaumconcmf tataansnee sh7

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I*;T9??? CPPAT!**O >*A**ATT:T PEC5?CCA*IC 3 7t3 Td3E2 5*.I* 2 IS*.x:D - U' TIT i If power has been less than 20%FP for greater thsn L3 hcurs, the follo-<ing 1.

limits apply in erf er to raise power to a new equilihriu= ;over level, A mazi=::n power increase rate of 3577 per hour between 0 and 20$FF.

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A cazi=un power increase rate of 30%FF per hour above 20$TP.

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A 'five hour power level " hold" between 65 and 70$FP ami between 85 e.

f and 905T2.

i Once a equilibriu= power level above 20%FP has been echieved by following j

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step 1, operation between that level ami 20%7F is subject only to Technical Specification limitations.

i If power has been less than 2C%FP for less than LS hours, the following I

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limits apply in order to raise power to the equilibri=n level established by step 1.

f It power has been less than 20577 for less than 10 hours1.157407e-4 days <br />0.00278 hours <br />1.653439e-5 weeks <br />3.805e-6 months <br />, the rate a.

of 3%FP per hour should be used to regain the 20$FP levels Technical 2;ccifi::e.'. ion ** *te ::17 then epply to oper: tics betvec= 204" P ani the I

equilibrius power level established by step 1.

If power has been less than 20$FF for more than 10 hours1.157407e-4 days <br />0.00278 hours <br />1.653439e-5 weeks <br />3.805e-6 months <br /> but less than b.

k8 bours, the rate of 3%TP per bour should be used to regain 20%FP and

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if the prereduction equilibrius power level (establishei by step 1) is t

greater than 75%FF then only one five hour power level "hnta" is required -

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at 1C5FP below the pre-reduction level - to regnin that level.

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