ML20132D266

Forwards Safety Evaluation Re Degraded Grid Voltage Procedures.Procedures Acceptable.Revised Tech Specs for Degraded Grid Voltage Protection Requested within 90 Days of Ltr Receipt

ML20132D266
Person / Time
Site:	Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png
Issue date:	07/02/1985
From:	Zwolinski J Office of Nuclear Reactor Regulation
To:	Opeka J CONNECTICUT YANKEE ATOMIC POWER CO.
Shared Package
ML20132D270	List: ML20132D266 ML20132D273
References
LSO5-85-07-012, LSO5-85-7-12, NUDOCS 8507170030
Download: ML20132D266 (4)

Text

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4 ga atog[o g' UNITED STATES y o NUCLEAR REGULATORY COMMISSION t y W ASHINGTON, D. C. 20555 s e

• • o...../ July 2, 1985

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Docket No. 50-213 LS05-85-07-012 Mr. Jchr F. Opeka, Senior Vice President Nuclear Engineering and Operations Connecticut Yankee Atomic Power Company Post Office Box 270 Hartford, Connecticut 06141 i

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SUBJECT:

SAFETY EVALUATION FOR DEGRADED GRID VOLTAGE PROCEDURES Re: HADDAM NECK PLANT; By letter dated July 9,198?, the staff provided its safety evaluation on degraded grid protection of Class IE power systems at the Haddam .

Neck Plant. In that letter, the staff requested that operating procedures be submitted which described operator actions for a degraded grid under non-LOCA conditinns. Py letter dated February 3,1983, Connecticut Yankee Atomic Power Company (CYAPC01 submitted the recuested procedures. By letter dated February 14, 1985, CYAPCO provided additional information concerning degraded grid voltage procedures at the Haddam Neck Plant.

Based upon nur review of the licensee's submittals, the staff concludes that the licenseds procedures for dearaded grid voltace protection of Class IE power systems are acceptable. A copy of our safety evaluation is enclosed.

Bv letter dated October 20, 1981, CYAPC0 proposed technical specification I'TS) changes to reflect additional limiting conditions for operrtion associated with the proposed degraded grid voltage protection system. The staff safety evaluation dated July 9,1982 concluded that the proposed TS rrodifications for degraded grid voltage protection were acceptable. As stated above, the staff also requested that procedures describing the reouired creretor actions be submitted for staff review. When these procedures were submitted, the staff discovered that the TS changes proposed in the October 1981 letter were not consistent with the action levels described in the procedures package. Given that the dcoraded orid voltage procedures have been found ecceptable, and that the proposed TS do not reflect the nunerical values presented in the apprnved procedures, the staff requests that CYAPC0 revise the TS proposed in the October 20, 1981 letter to reflect the values contained in the erproved procedures. The staff requests that the revised TS for degraded grid voltage protection be submitted within 90 days of receipt of this letter, 8507170030 950702 PDR P

ADOCK 05000213 PDR (2[8! f/ G3 I

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l L Mr. John F. Opeka July 2, 1985 i u ,

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The-reporting and/or recordkeeping requirements contained in this letter  !

affect fewer than ten respondents; therefore, OMB clearance is not required

, under P.L.96-511.

1 Sincerely,

$WW John A. Zmlinski, Chief Operating Reactors Branch  ;

Division of Licensing

Enclosure:

Safety Evaluation cc w/ enclosure:

See next_ page ,

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Pr. John F. Opeka ^P The reporting and/or recordkeeping requirements contained in this letter affect fewer than ten respondents; therefore. OMB clearance is not required under P.L. %-511.

Sinc ely q

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John . Zwolinski, Chief Opera ing Reactors Branch Division of Licensing

Enclosure:

Safety Evaluation cc w/ enclosure:

See next page I

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14 Mr. John F. Opeka Faddam Neck Plant Connecticut Yankee Atomic Power Cor.pany cc .

Gerald Garfield, Esquire Kevin McCarthy, Director Day, Berry & Howard Padiation Control Unit Counselors at Law Department of Environmental City Place Protecticn Hartford, Connecticut 06103-3499 State Office Buf1 ding l Hartford, Connecticut 06106 Superintendent Haddam Neck Plant RDF di Post Office Box 127E East Hampton, Connecticut 064?4 Edward J. Mroczka Vice President, Nuclear Operations Northeast Utilities Service Company Post Office Box ?70 Hartford, Connecticut 06141 Board of Selectnen Town Hall Haddam, Connecticut 06103 State of Connecticut Office of Policy and Management ATTN: Under Secretary Energy Division 80 Washington Street Hartford, Connecticut 06106 Resident Inspector Haddan Neck Nuclear Power Station c/o U.S. NRC East Haddam Post Office East Haddam, Connecticut 06423 Regional Administrator Nuclear Reculatory Commission, Region I 631 Park Avenue King of Prussia, Pennsylvania 19406 l

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