ML17261A520

Advises That Based on Evaluation,Reactor Vessel Level Indication Sys (RVLIS) Acceptable for Use in Emergency Operating Procedures,Per 870318 Projected Schedule.Tech Specs Covering RVLIS Will Be Submitted by End of Sept 1987

ML17261A520
Person / Time
Site:	Ginna
Issue date:	06/11/1987
From:	Kober R ROCHESTER GAS & ELECTRIC CORP.
To:	Stahle C NRC, NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
NUDOCS 8706180128
Download: ML17261A520 (6)

Text

REGULATORY I FORMATION DISTRlBUTIQN SYS EM (BIDS)

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, ACCESSION NBR: 870bi80128 GC. DATE: 87/06/1 1 NQTAR I NO DOCKET FACIL: 50-244 Robert Emmet ( irma Nuclear Plant> Unit 1> 0 05000244 AUTH. NAME AUTHOR AFFILIATION KGBER> R. W. Rochester Gas 5 Electric Corp.

RECIP. NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

STAHLE> C. NRC No Detailed Affiliation Given

SUBJECT:

Advises that based on evaluation> reactor vessel level indication sos (RVLIS) acceptable for use in emergency operating procedures> per 870318 prospected schedule. Tech Specs RVLIS mill be submitted bg end of Sept 1987.

DISTRIBUTIDN CODE: AOASD COPIES RECEIVED: LTR TITLE: QR/Licensing Submittal: Equipment Qual i ENCL ification 9 SIZE:

NOTES: License Exp date in accordance eith 10CFR2> 2. 109(9/19'/72). 05000244 REC IP IENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD1-3 LA PD1-3 PD STAHLE> C INTERNAL'RM/DAF/LFMB ('C NRR/DEST/ADE NRR/DEST/MEB SGB OQC/HDS2 RE(' LE 01 EXTERNAL: LPDR NRC PDR NSIC Q

TOTAL NUMBER QF COP IES REQUIRED: LTTR 13 ENCL

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O'IAlC ROCHESTER GAS AND ELECTRIC CORPORATION o 89 EAST AVENUE, ROCHESTER, N. K 14849-P001 ROGER W. KOBER 7 C L C P I{0 N C VKE PRESIDENT 546-2700 ARCA CODE TIS ELECTRIC PRODVCllON June 11, 1987 U.S. Nuclear Regulatory Commission Document Control Desk Attn: Mr. Carl Stahle PWR Project Directorate No. 1 Washingtoni D.C. 20555

Subject:

Inadequate Core Cooling Instrumentation Implementation Environmental Qualification Stipulation R. E. Ginna Nuclear Power Plant Docket No. 50-244 Reference 1: RGSE letter from R.W. Kober to Att: G.E. Lear> NRRI dated March 18< 1987

Dear Mr. Stahle:

Reference 1 provided a revised schedule for implementation of the Reactor Vessel Level Indication System (RVLIS) at R.E. Ginna.

The schedule called for implementation of RVLIS with associated procedures by the end of July 1987 provided the evaluation of the RVLIS that was in progress yielded acceptable results. The evaluation has been completed and concluded that RVLIS is acceptable for use in the Ginna Emergency Operating Procedures (EOPs). Therefore> we intend to implement the RVLIS xn accordance with our projected schedule.

The environmental qualification of RVLIS has also been reviewed. The RVLIS is environmentally qualified with the potential exception of one of the reference leg RTDs used to compensate the reference leg density for temperature effects.

During an adverse containment scenario the reference leg .RTD may be submerged. The RTD is qualified for a harsh environment with chemical sprays, but uncertainty has been it was not tested for submergence.

evaluated assuming failure of this The RVLIS reference leg RTD. The additional uncertainty has been incorporated into the degraded core cooling setpoint for adverse containment. It is our intent to implement RVLIS with the associated procedures with an increased uncertainty in the degraded core setpoint. The increased uncertainty will remain until the RTD is qualified or the system is modified so that the RTD is no longer required.

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RG&E is also developing proposed Technical Specifications covering RVLIS. Xt is expected that these specifications can be written> reviewed> approved and submitted to you by the end of SeptemberI 1987.

Ve truly yours, Roger W. Kober

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