IR 05000928/2010031

Notice of Violation from Insp on 850928-1031

ML20137T234
Person / Time
Site:	Rancho Seco, 05000928
Issue date:	11/20/1985
From:	Miller L NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
To:
Shared Package
ML20137T232	List: IR 05000312/1985030 IR 05000928/2010031 ML20137T225
References
50-312-85-30, NUDOCS 8512060414
Download: ML20137T234 (1)

Text

.

.

,

APPENDIX A

= NOTICE OF VIOLATION Sacramento Municipal Utility District '

Docket No. 50-312 P. O. Box 15830

,

.

t License No. DPR-54 y

As a. result of the inspection conducted' between September 28 and October 31, 1935, and in accordance with NRC Enforcement Policy, 10 CFR Part 2, Appendix C,Ethe following violations were identified: Technical Specification 6.8.1 requires that written procedures be established, implemented, and maintained covering activities including surveillance'and test activities of safety related equipment. Also, Administrative Procedure 2 " Review, Approval and Maintenance of Procedures"' establishes the licensee's guidelines for revisicas or temporary changes to procedure Contrary to the.above requirements, on September 29, 1985 the licensee used an unapproved procedure in performing the calibration of the A channel power range instrumen This is a Severity Level V Violation (Supplement I). Technical Specification 3.1.2.2 states, in part ". . .Heatup and cooldown rates shall not exceed the rates stated on the associated figure."

Figure 3.1.2-2 states a reactor coolant system cooldown rate of 100 F/Hr at temperatures greater than 270 On October 2, 1985, with the reactor at approximately 15 percent power, a loss of main feedwater caused a high reactor coolant system pressure, resulting in a reactor trip. Primarily due to the inappropriate opening of the fourth point feedwater heater relief valves, the reactor coolant temperature decreased to below the normal post reactor trip temperature of approximately 550 F to approximately' 490 F in 20 minute This cooldown exceeded the Technical Specification limit as specified above and is a Severity Level IV Violation (Supplement I).

Pursuant +to the provisions of 10 CFR 2.201, the Sacramento Municipal Utility District is required to submit to this office within thirty days of the date of this Notice a written statement or explanation in reply, including: (1)

corrective steps'which have been taken and the'results achieved; (2)

corrective steps which will be taken to avoid further items of noncompliance; and,.(3) the date when full compliance will be achieved. Consideration may be given to extending your response time for good cause show NOV 201985 Dated-

'

L. F. Mil'ler l(-

ief W2 Reactor Proje t Sec 2 8512060414 851120 PDR ADOCK 0b000312 O PDR

,