ML19242A175

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Proposes Change to Tech Specs Re Response Time for steam-driven Emergency Feedwater Pump.Forwards Revised Page of Tech Specs W/Vertical Lines Showing Items Changed.Class III Fee Encl
ML19242A175
Person / Time
Site: Arkansas Nuclear Entergy icon.png
Issue date: 07/24/1979
From: Cavanaugh W
ARKANSAS POWER & LIGHT CO.
To: Stolz J
Office of Nuclear Reactor Regulation
References
2-079-7, 2-79-7, NUDOCS 7907310439
Download: ML19242A175 (4)


Text

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ARKANSAS POWER & LIGHT COMPANY POST OFFICE DOX 551 UTTLE ROCK. ARKANS/.S 72203 (501) 371-4422 July 24,1979 WILLIAM CAVANAUGH lli Vice President Generation & Construction 2-079-7 Director of fluclear Reactor Regulation ,

ATTft: John F. Stolz, Chief Light Water Reactors Branch #1 U.S. Nuclear Regulatory Commission Washington, D.C. 20555

Subject:

Arkansas fluclear One-Unit 2 Docket tio. 50-368 License fio. f1PF-6 Proposed Technical Specifications Change-EFW Pump Response Time (File: 2-1511.1)

Gentlemer.:

This letter proposes a change to the Arkansas fluclear One-Unit 2 (AriO-2)

Technical Specifications. We wish to change Table 3.3-5, Items 7a and 8a from < 21.4 seconds to < 97.4 seconds for the following reasons.

Items 7a and 8a of Table 3.3-5 give the maximum allowable response time for the steam-driven emergency feedwater (EFW) pump as less than or equal to 21.4 seconds while the maximum allowable response time for the motor-driven EFW pump is < 112.4 seconds assuming loss of off-site power and 97.4 seconds assuming off-site power is available.

We have verifi j through our flSSS vendor that no credit was taken in the ANO-2 safety analysis for delivery of EFW from either pump prior to 97.4 seconds fellowing an actuation signal. Therefore, we wish to incorporate the 97.4 second response time for the steam-driven EFW pump. A revised pag' 3/4 3-20 of the At10-2 Technical Specification with vertical lines show:ng toe items changed is included.

790731093 MEMDER M OOLE SOUTH UTILITIE3 SYSTEM

John F. Stolz July 24,1979 i

Pursuant to the requiren:ents of 10 CFR 170.12, we have detennined our amendnient request to require a Class III fee of $4,000 as it involves a single safety issue. Accordingly, a check in the amount of $4,000 is remitted.

Very,truly yours, -

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_ - -W q William Cavanaugh, III l)

WC:DCT:nak Enclosure Gf7

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[

e STATE OF ARVANSAS )

) SS COUNTY OF PULASKI )

William Cavanaugh*III, being duly sworn, states that he is Vice President, Generation & Constructico, for Arkansas Power & Light Company; that he is authorized on the part of said Company to sign and file with the Nuclear Regulatory Commission this Supplementary Infomation; that he has reviewed or caused to have reviewed all of the statements contained in such infonnation, and that all such statements made and matters set forth therein are true and correct to the best of his kncwledge, informa-tion and belief.

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/'_(V ,fR- :ym/ um c William Cavanaugh III

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v SUBSCRIBED AND SWORN T0 before me, a Notary Public in and for the County and State above named, this M ay of/

f,/// 1979.

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Notary Pub it'

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My Comission Expi,es:

My Commission Expires 9/1/s1 I i. ~l s .)

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TABLE 3.3-5(Continuedl ENGIflEERED SAFETY FEATURES RESPONSE TIME 5 INITIATING SIGML AND FUNCTION RESPONSE TIME IN SECONDS

4. Containment Pressure--High-Hiah
a. Containment Spray 1 42.l*/27.l**
5. Steam Generator Pressure-Low
a. Main Steam Isolatior. 19 3
b. Feedwater Isolation 1 36. 4 */21. 4 **
6. Refueling Water Tank-Low
a. Containment Sump Valve Open $ 145.0
7. Steam Generator Level-Low
a. Emergency Feedwater - Train A 1 97.4
b. Emergency Feedwater - Train B $ 112.4*/97.4**
8. Steam Generator aP-High Coincident With Steam Generator Level-Low
a. Emergency Feedwater - Train A 5 97,4
b. Emergency Feedwater - Train B 1 112.4*/97.4**

TABLE NOTATION Diesel generator starting and sequence loading delays included.

Diesel generator starting delays not included, sequence loading delays included. Offsite power available.

1

/13

' 204 ARKANSAS - UNIT 2 3/4 3-20

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