ML17256A550

Advises That Util Plans to Install Reactor Vessel Water Level Sys & Upgrade Core Exit Thermocouples for Inadequate Core Cooling Instrumentation Sys,Per Generic Ltr 82-12. Regulatory Commitment Schedules Under re-evaluation

ML17256A550
Person / Time
Site:	Ginna
Issue date:	03/10/1983
From:	Maier J ROCHESTER GAS & ELECTRIC CORP.
To:	Crutchfield D Office of Nuclear Reactor Regulation
References
GL-82-12, NUDOCS 8303170161
Download: ML17256A550 (8)

Text

REGULATORi DEFORMATION DISTRIBUTION S 'EM (RIDS)

ACCESSION NBR ~ 8303170161 OOC ~ DATE ~ 83/03/10 NOTARIZED NO DOCKET FAOIL:50"244 Robent Emmet Ginna Nuclear Plantg AUTHOR AFFILIATION Uni,t li Rochester G 05000244 AUTH SHAME MAIERiJeE ~ Rochester Gas K Electric Corp+

REC IP ~ NAHF- RECIPIENT AFFILIATION CRUTCHF IELO p D ~ Operating Reactors Branch 5

SUBJECT:

Advises ithat util plans <<to install reactor vessel eater level sys K upgrade core exit thermocouples for inadequate core cooling instrumentation sys~per Generic Ltr 82-12, Regulatory commitment schedules under re-evaluation, DISTRIBUTION CODE'002S COPIES RECEIVED!LTR 3 ENCL J SIZE:

TITLE: OR Submi ttal': Inadequate Core Cooling (Item II ~ F.2) GL 82 28' NOTES:NRR/DL/SEP 1cy, 05000244 RECIPIENT COPIES RECIPIENT COPIES IO CODE/NAME LTTR ENCL IO CODE/NAY<<E LTTR ENCL INTiERNAL'RR SHEAgJ 01 1 1 NRR/DHFS/HFEB15 1 1

NRR/DHFS/PTRB16 1 1 NRR/DL/ORAB'8 1 NRR/DSI DIR 09 1 1 NRR/DSI/CPB 10 >3 '3 NRR/OS'B 14 1 1 NRR/DS I/RSB 13 1 1 ES 04 1 1 RGN1 07 1 EXTERNAL

ACRS 10 1'0 LPOR 03 1 1 NRC PDR 02 1 1 NSIC 06 1 NOTES'7 NTIS 05 1

1 1

TOTAL NUMBER OF COPIES REQUIRED e LTTR 27 ENCL 27

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~ Oblige zztntitz szez isi~zs j/ nor(g(e ROCHESTER GAS AND ELECTRIC CORPORATION ~ 89 EAST AVENUE, ROCHESTER. N.Y. 14649 JOHN E. MAILER TKLCptlONt'.

Vico Presldont ARCA CODC, Tlo 546.2700 March 10, 1983

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~ I Director of Nuclear Reactor Regulation, Attention: Mr. Dennis M. Crutchfield, Chief Operating Reactors Branch No. 5 U.S. Nuclear Regulatory Commission Washington, D.C. 20555

Subject:

Inadequate Core Cooling Instrumentation System, Generic Letter 82-12 R. E. Ginna Nuclear Power Plant Docket No. 50-244

Dear Mr. Crutchfield:

Darrell Eisenhut's letter dated December 10, 1982 informed us that the Commission had determined that an instrumentation system for inadequate core cooling including core exit thermocouples and "a reactor coolant inventory tracking system" is required for operation of pressurized water reactor facilities. Rochester Gas and Electric had previously stated its position in letters dated July 2, 1980, December 15, 1980, December 30, 1980 and January 19, 1982 that an instrument to accurately measure reactor vessel water level could serve a useful purpose but that such a device is not necessary for proper operator response to emergency situations.

RGGE was also not convinced that reactor vessel water level instruments being developed had been adequately tested or proven to provide a clear, unambiguous indication of inadequate core cooling Despite our continued misgivings about the need for and the reliability of currently marketed systems, we acknowledge the requirement to install a reactor vessel water level indicating device. Since receiving the December 10 letter, we have requested proposals from Westinghouse and Combustion Engineering and will plan to install a water level device. We are still awaiting the arrival of some information from the vendors to enable us to price the equipment and services within the vendor scope. In addition, we are developing system cost estimates for both systems using other utilities'xperience and estimates of engineering, piping and mechanical subsystems, electrical subsystems, installation and preoperational testing.

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ROCHESTER GAS AND ELECTRIC ORP. SHEET NO.

DATE March 10, 1983 Mr. Dennis M. Crutchfield The specific information requested in Mr. Eisenhut's December 10 letter will be developed as we proceed with system proposal evaluations, cost estimating, ALARA evaluations, and preliminary engineering and design work. We estimate that six months will be required to make a preliminary cost estimate and to select the type of instrument to be installed. Experience at other utilities and discussions with the vendors indicate that a system could be installed no sooner than the second refueling after selection of the instrument type to be installed even if an expedited engineering effort is initiated on the project. Our current workload of regulatory commitments, however, is large.

Rochester Gas and, Electric is evaluating the total scope of the modifications currently scheduled to be performed during the next five year period and beyond. The scope of future modifica-tions include those to meet post-TMI requirements such as the Safety Parameter Display System (SPDS) and related plant computer, control room design review, and control room habitability; modifi-cations to comply with Appendix R requirements for fire protec-tion; steam generator sleeving to maintain the high reliability of our plant; SEP modifications to upgrade the plant to meet a variety of topic resolutions including high energy line breaks, seismic qualification, flood protection, and winds and tornadoes and other severe phenomena; seismic piping upgrade; and environ-mental qualification of electrical equipment. Many of these modifications are to be performed to keep the plant current with regulatory requirements, although the plant has been and can continue to be operated safely in its existing configuration.

Company projections of the currently scheduled modifications are between 45 and 50 million dollars in each of the next five years.

Installation of a reactor vessel water level system is expected to cost 2 to 4 million dollars and upgrading core exit thermocouples will cost approximately 1 million dollars more.

In view of this situation, a reactor vessel water level meter and upgraded core exit thermocouples will be factored into our reevaluation of long range plans for plant modifications. It will also be considered in our plans to address the requirements of Supplement 1 to NUREG-0737 concerning SPDS, Regulatory Guide 1.97, control room design review and improved emergency operating procedures.

Rochester Gas and Electric will be submitting information to resolve open SEP topics and other regulatory items in April 1983.

If the NRC Staff is able to close these issues with an SER by mid summer, we will develop an implementation schedule within four months, or by the fall of 1983. You will be informed of the

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ROCHESTER GAS ANP ELECTRIC CORP. SHEET NO. 3 pATE March 10, 1983 To Mr. Dennis M. Crutchfield results of our reevaluation of our regulatory commitment schedules as they are completed. The reactor vessel water level system will be installed on a schedule consistent with mutually agreed upon priorities.

Very truly yours, Subscribed and sworn to before me on this 10th day of March 1983 WILLiS L: CHULZE NOTARY PUBLIC, State of II.Y., Iitonroe County h'ly Comm'.ss.'on Expires March SO, 19.H4

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