ML17194A642

Application to Amend Licenses DPR-19,DPR-25,DPR-29 & DPR-30, Deleting Tech Spec Surveillance Requirements to Test Automatic Pressure Relief Valves Daily When HPCI Subsystem Is Inoperable

ML17194A642
Person / Time
Site:	Dresden, Quad Cities, 05000000
Issue date:	04/29/1982
From:	Rausch T COMMONWEALTH EDISON CO.
To:	Harold Denton Office of Nuclear Reactor Regulation
Shared Package
ML17194A643	List: ML17194A642 ML20052C076
References
4015N, NUDOCS 8205040325
Download: ML17194A642 (2)

Text

Comm~alth Edison One First"Wo-nal Plaza, Chicago, Illinois Address Reply to: Post Office Box 767 Chicago, Illinois 60690

• April 2 9, 198 2 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory'Commission Washington, DC 20555 *

Subject:

Dresden Station Units 2 and 3 Quad Cities Station Units l and 2 Proposed Amendment to *Technical Specifications Concerning Surveillance of Automatic Pressure Relief Valves When HPCI Subsytem is Inoperable NRC Docket Nos~ 50~237/249 & 50-254/265 References (a): D. M. Crutchfield letter to* L. DelGeorge dated September 16, 198~ (Am. 65 to Dresden 2 DPR-19)

(b): T. A. Ippolito letter to L. DelGeorge dated. December 21, 198l(Am. '57 to*

Qresden 3. DPR-25)

Dear Mr. Denton:

Pursuant to 10 CFR 50.59, Commonwealth Edison hereby requests to amend *the Dresden Units 2 and 3 and Quad Cities Units l and 2 Operating License Nos. DPR-19, 25, 29 and 30, respectively.

The change requested is to delete the Technica.l Specification surveillance requirement* to test the automatic pressure relief valves daily when the HPC I. ~ubsy stem is i.noperabl e.

Dresden and Quad Cities Technical Specifications 4.5.C.2 currently requires that certain ECCS systems, including the auto-matic pressure relief subsystem (ADS) be demonstrated operable immediately and daily thereafter when it is determined that HPCI is inoperable. The change requested is to delete only the daily requirement to operate each ADS valve for the. remaining six days in which the unit may operate with HPCI .inoperable~ The feedwater system will be required to be available (as it would normally) as a high pressure and high volume coolant supply. .A~/

The attached changes have received On-Site and Off-Site ~

review and approval, with the conclusion that this change will /;'!

re s u l t i n i n crease d ma r g.i n s o f s a f et y . Sin c e ea ch val v e i s

..*.demonstrated* operable .imme*aiately' subsequent daily valve cycling w/Jt,lr:

wi 11 pro vi d e l i t t l e add e d ass u r.a n c e th a t th e v a l v e s wi 11 ope n o n //

• demand. The primary effect of subsequen~ daily testing will be to 8800*00 increase the likelihood that one of the valves will stick open, thereby subjecting the unit to an undesirable pressure reduction transient. rt should also be noted that current BWR Standard Technical Specifications do not require the daily opening and closing of ADS valves in comparable situations.

f '

H. R. Denton April 29, 1982 Temporary approval of this change has been granted previously in license Amendment No~ 65 to Dresden Unit 2 and No. 57 to bresden Unit 3 (References (a) and (b)).

The attached Quad Cities Units l and 2 pages also include a change to Technical Specification 3~5.D.l requiring auto-initiation of relief valves every six months. This requirement is an admini-strative error which has been discussed with Region III personnel and the appropriate NRR personnel. The surveillance should be performed only during refueling outages~

In accordance with 10 CFR 170, we have determined that the

• proposed changes are two (2) Class III and two Class I amendments.

As such, a fee remittanc~ of $8,800 i5 enclosed.

Please direct any questions you may have concerning this matter to this office.

Three (3) signed originals and thirty-seven (37) ccipies of this transmittal are provided for your use.

Very truly yours,

.:zL,......At:fi7R 'CC . . --<

Thomas J. Rausch N~clear Licensirig Administrator lm cc: Re*gion III rnspector - Dresden Region III Inspector - Quad Cities 4015N *