ML20212K579

Notice of Violation from Insp on 861008-1117.Violation Noted:Reactor Vessel Did Not Have Min Operable Channels Per Trip Sys & Affected Sys Isolation Valves Not Locked Closed within Allowed Limiting Condition for Operation Time Limit

ML20212K579
Person / Time
Site:	LaSalle
Issue date:	01/21/1987
From:	Norelius C NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:
Shared Package
ML20212K452	List: IR 05000373/1986040 ML20212K447 ML20212K579
References
50-373-86-40, NUDOCS 8701290117
Download: ML20212K579 (1)

Text

e NOTICE OF VIOLATION Commonwealth Edison Company .

Docket No. 50-373 As a result of the inspection conducted from October 8 through November 17, 1986, and in accordance with the General Policy and Procedures for NRC Enforcement Actions (10 CFR Part 2, Appendix C), the following violation was identified:

Technical Specification 3.3.2.b requires that the isolation actuation instrumentation channels shown in table 3.3.2-1 be operable or the action taken required by the Limiting Condition for Operation (LCO) which is, "With the number of OPERABLE channels less than required by the minimum OPERABLE channels per trip system requirements for one trip system, place the operable channel (s) and/or trip system in the tripped condition

• within one hour." A foot note at the bottom of the page states, "*An inoperable channel need not be placed in the tripped condition where this would cause the trip function to occur. In these cases, the inoperable channel shall be restored to OPERABLE status within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or the ACTION required by table 3.3.2-1 for that trip function shall be taken."

Table 3.3.2-1 lists " Action 25" for the Reactor Vessel (Residual Heat Removal (RHR) Cut-In Permissive Pressure-High). " Action 25" states, " Lock the affected system isolation valves closed within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and declare the affected system inoperable."

Contrary to the above, on October 16, 1986, at 12:35 a.m., the Reactor Vessel (RHR Cut-In Permissive Pressure-High) did not have the minimum operable channels per trip system until 10:50 p.m. on October 16, 1985, and the affected system isolation valves were not locked closed within tha allowed LCO time limit. ,

Pursuant to the provisions of 10 CFR 2.201, you are required to submit to this office within thirty days of the date of this Notice a written statement or explanation in reply, including for each item of violation: (1) corrective action taken and the results achieved; (2) corrective action to be taken to avoid further violations; and (3) the date when full compliance will be achieved. Consideration may be given to extending your response time for good cause shown.

JAN 21 1987 g gy Dated Charles E. Norelius, Director l

Division of Reactor Projects I

l 8701290117 870121 PDR ADOCK 05000373 i G PDR I

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