ML20151Q035

Supplemental Application to Amend License DPR-29 Re Revised Tech Spec Figure 3.4.-1 Concerning Standby Liquid Control Solution Requirements

ML20151Q035
Person / Time
Site:	Quad Cities
Issue date:	08/02/1988
From:	Johnson I COMMONWEALTH EDISON CO.
To:	Murley T Office of Nuclear Reactor Regulation
Shared Package
ML20151Q038	List: ML20151Q035 ML20151Q046
References
4977K, NUDOCS 8808100282
Download: ML20151Q035 (3)

Text

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1. N Commonwealth Edison

) Orc First k%ional Plaza, Chicago.15inois

?I . O] Address Reply to: Post Offico Box 767~

3

( ,/ Chicago Ilknois 60690 0767 August 2, 1988 Mr. Thomas E. Murley, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, DC 20555

Subject:

Quad Cities Station Units 1 and 2 "Transmittal of Information Pertaining to Standby Liquid Control (SBLC) Technical Specifications - Supplement to Unit 1 Technical Specification Reissuance" NRC Docket Hos. 50-254 and 50-265 References (a): Letter from I.M. Johnson to T.E. Murley dated November 17, 1988.

(b): Letter from T. Ross to L.D. Butterfield dated March 28, 1988.

(c): Letter from I.M. Johnson to T.E. Murley dated May 10, 1988.

s (d): Letter from J.R. Wojnerowski to H.R. Denton dated October 28, 1986.

(e): Letter from J.A. Zwolinski to D.L. Farrar dated December 30, 1986.

Dear Mr. Murley j In Reference (a), Commonwealth Edison requested a Technicel Specification change in Quad Cities Unit 1 in support of the modifications completed to achieve compliance with 50.62, Anticipated Transitat Without a Scrari ( A' INS) rule. In response to Reference (a), members of rwte staf f issued I revised Technical Specifications which incorporated modificat2ons to the Standby Liquid Control (SBLC) system. These Technical Specifications were transmitted to us in Reference (b) as AmendmSnt No. 106 t.o DPP.29.

In the review of Amendmer;t 106 to DPR-29, sevc,ral dif ferences werc identified from what was submitted to your staf.f for their ter!ew and approval.

f Ia one case, Figtme 3.4-1, titled "Standby Liquid Control Solution Requirements",

! was deleted. However, e revised figure (which was to have been reissued as a deleted figure) was not par'. of the anneadment packaga. Commonwealth Edison now i wishes to supplement Reference (c) so that this information may be reissued as I part of the Quad Cities Unit 1 Rotyped Technical Specification.

i OS fC 88081(0282 esoso2 PDR I I P ADOCK 05000254 PDC l

T.E. Murley August 2, 1988 Attached, please find a new copy of Figure 3.4-1, as well as page vil, titled "List of Figures to Quad Cities DPR-29 Technical Specifications, Appendix A". Please include this information in the Quad Cities Unit 1 Retype.

Additionally,'it was noted that information contained in the Safety Evaluation Report (SER) issued in support of knendment 106 to DPR-29 was not consistent with the newly approved Unit 1 SBLC tank volumes. The SER indicates that liquid poison volume was decreased from 3470 gallons to 3321 gallons, while the change actually increased the tank volume from a minimum of 3410 to 3733. The 3321 gallon value is the calculated amount needed to be injected into the vessel, however, it does not account for the unusable volume of the tank. The value 3733 includes the unusable tank volume, and as a result, in order to achieve compliance with the ATHS rule, the SBLC tank volume was increased from the original requirement of 3470 gallons to 3733.

The numbers in the Technical Specification are correct, although the SER values were incorrect.

These discrepancies carry over frca Amendment 93 to DPR-30 (Reference (e)) for Quad Cities Unit 1 which was issued as a result of our proposed Unit 2  ;

Technical Spscification change (Reference (d)). In the case of Amemdent 93, l however, the Technical Specification and the SER both reference the 3321 gallon value. Commonwealth Edison commits to providing a Technical Specification change that would correct this value by including a correction factor for the unusable volume of the tank. This change will be submitted by August 30, 1988. At th8s time, we are administratively controlling the Unit 2 value at ,

above 3733 gallons. l Please direct any questions you may have regarding thFt matter to  !

this office.

Very truly yours, J '

a m.

q I. M.

ohnso 1

I Nucletr Licensin inistrator l In 1 l

Attachments At List or. Figures to DPR-29 Technical Specifications Appendix A Bt Figure 3.4-1 to Quad Cities Unit 1 DPR-29 cc A.B. Davis - NRC Regional Administrator, RIII M.C. Parker - State of Illinois (IDNS)

T. Ross - NRk 4977K

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"LJST OF FIGURES TO DPR-29 IECHNICAL SPECIFICATIONS APPENDIX A" l

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