ML20006D440

Comments on Tech Specs Applicable to Facility in Defueled Condition.Concerns Raised That Current Procedures & Training May Not Adequately Cover Maintaining Spent Fuel Pool Cooling Following Postulated Loss of Offsite Power

ML20006D440
Person / Time
Site:	Rancho Seco
Issue date:	02/05/1990
From:	Trammell C Office of Nuclear Reactor Regulation
To:	Keuter D SACRAMENTO MUNICIPAL UTILITY DISTRICT
References
TAC-75395, NUDOCS 9002130207
Download: ML20006D440 (5)

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UNITED STATES j

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wasHmotow, o, c. noses February 5, 1990 Docket No. 50-312 Mr. Dan R. Keuter-

-Assistant General Manager, Nuclear Rancho Seco Nuclear Generating Station 14440 Twin Cities Road Herald, California 95638-9799 7

SUBJECT:

TECHNICAL SPECIFICATIONS APPLICABLE IN THE DEFUELED CONDITION (TACNO.75395)

The HRR staff and Region V staff have completed a preliminary review of your j

December 4, 1989 letter, which discussed Technical Specifications applicable in the current defueled condition, and have the following cor:nents.

1.-

Technical-Specification 3.8.1 in Attachment 2 of your letter relates to area radiation monitor R15028 in the spent fuel pool building. The present specification requires the radiation monitor be operable only when moving fuel in the spent fuel storage area.

Since there is 1) no

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, criticality monitor in the spent fuel pool, 2) a continuing decline in the number of an-site personnel available to monitor the spent fuel pool area, and 3) an apparent reduction in personnel training, it appears that i

-maintaining the area radiation monitor functional, as a minimum, at all times-would be appropriate. The monitor can serve as a backup for the spent fuel-pool level indication system and to monitor for potential fuel damage.

It is requested that you evaluate the benefit to safety provided by maintaining this monitor functional at all times and advise us of your results and any proposed actions.

2.

It is unclear what you are proposing concerning the operation of the HEPA/ charcoal filtration systems. Because the reactor and auxiliary buildings will continue to contain substantial radioactivity, it

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would be appropriate to maintain the HEPA filtration systems in a functional status, as a minimum. Moreover, the HEPA and charcoal filtration systems in the fuel handling building should be maintained in a functional status.

It is requested that you evaluate the need for maintaining the functionality of these systems and provide us with your results and any proposed actions.

5 3.

There is a concern that current procedures and training may not adequately cover the area of maintaining spent fuel pool cooling and spent fuel pool level following a postulated' loss of offsite power event.

The current plant conditions do not match with the expected conditions during power operations (i.e., electrical alignment of the 480 V system with the breaker between the GM and TDI diesel generator busses closed.)

A demonstration test of both equipment and procedures to handle a loss of offsite power appears appropriate before formalizing chenges.

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Nr.DanR._Keuter

-2 February 5,1990 We want to remind you that your December 4,1989 letter does not modify the existing Technical Specifications. Questions pertaining to the applicability of specific Technical Specifications while in your present defueled condition should be handled on a case by-case basis with the NRC staff.

Sincerely, h.

C rles M. Trammell, Acting D ector Project Directorate V Division of Reactor Projects III, IV, Y and Special Projects Office of Nuclear Reactor Regulation cc: See next page

..y Mr. Dan R.- Keuter -

-2 February 5, 1990 o

lWe want to_ remind you that your December 4.1989 letter does not modify the.

existing Technical Specifications. Questions pertaining to the applicability-of Lspecific Technical Specifications while in your present defueled condition should be handled on a case-by-case basis with the NRC staff.

Sincerely, original signed by Charles Trammell s

Charles M. Tramell, Acting Director Project Directorate Y Division of Reactor Projects III, IV, V and Special Projects Office of Nuclear Reactor Regulation cc:.See next page

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OFFICIAL RECORD COPY Document Name: RS LTR TO KEUTER i

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Mr. Dan R.-Keuter We want to remind you that your December 4,1989 letter does not modify the

-existing Technical Specifications. You are required to meet the rfquirements

~of the Technical Specifications. Questions pertaining to the applicability of specific Technical Specifications while in your present defueled condition should be handled on a case-by. case basis with the NRC staff.

Sincerely, Charles H. Trammel, Acting Director Project Directorate V Division of Reactor Projects III, IV, V and Special Projects Office of Nuclear Reactor Regulation

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OFFICIAL RECORD COPY Document /Name: RS LTR TO KEUTER

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Mr. Dan Keuter Rancho Seco Nuclear Generating Station cc:

.Mr. David Boggs, General Manager Mr. John Bartus Sacramento Municipal Utility District Ms. JoAnne Scott 6201 S Street Federal Energy Regulatory Commission P.O. Box 15830 825 North Capitol Street, N. E.

Sacramento, California 95813 Washington, D.C.

20425 Ms. Jan Schori, General Counsel Ms. Helen Hubbard 6201 S Street P. O. Box 63 P. O. Box 15830 Sunol, California 94586 Sacramento, California 95813 Thomas A. Baxter, Esq.

Environmental Conservation Shaw, Pittman, Potts & Trowbridge

_ Suite 320 Organization 2300 N Street, N.W.

Washington, D.C.

20037 101 First Street Los Altos, California 94022 Mr. Steven Crunk Manager, Nuclear Licensing Sacramento Municipal Utility District Rancho Seco Nuclear Generating Station 14440 Twin Cities Road Herald, California 95638-9799 Mr. Robert B. Borsum, Licensing Representative Babcock & Wilcox Nuclear Power Division 1700 Rockville Pike - Suite 525 Rockville, Maryland 20852 Resident Inspector / Rancho Seco e/o U. S. N. R. C.

14440 Twin Cities Road Herald, California 95638 Regional Administrator, Region V U.S. Nuclear Regulatory Commission 1450 Maria Lane, Suite 210

. Walnut Creek, California 94596 Mr. John Hickman Senior Health Physicist Environmental Radioactive Management Unit Environmental Management Branch State Department of Health Services 714 P Street, Room 616 Sacramento, California 95814 Sacramento County Board of Supervisors 700 H Street, Suite 2450 Sacramento, California 95814

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