ML20062B820

Advises That ESF Reset Controls Comply W/Nrc Criteria,Subj to IE Confirmation

ML20062B820
Person / Time
Site:	Quad Cities
Issue date:	07/28/1982
From:	Novak T Office of Nuclear Reactor Regulation
To:	Jordan E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
Shared Package
ML20062B824	List: ML20062B820 ML20062B835
References
NUDOCS 8208050066
Download: ML20062B820 (1)

Text

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7, 4 Dcono/4 JUL 2 81982 Docket Nos. 50-254 and 50-265 4

MEMORANDUM FOR: E. L. Jordan, Director, Division of Engineering and Quality Assurance, IE FROM: T. R. Novak, Assistant Director for Operating Reactors, DL i

SUBJECT:

Quad Cities Station Nuclear Power Station, Units 1 and 2

Engineered Safety Features Reset Controls

, Task Interface Agreement ROI-80-15 assigned the responsibility to the Office of Nuclear Reactor Regulation for reviewing the licensees responses to I&E Bulletin 80-06. Our review of the Comonwealth Edison Company response to the bulletin for Quad Cities Units 1 and 2 are complete. The Technical Evaluation Report (TER) prepared by our contractor EG&G and our Safety Evaluation Report (SER) are enclosed.

! The licensee completed a drawing review in 1980 to identify components

, that would not remain in their energency mode following reset of the ESF actuation signal. The licensee concluded that no equipment diverts from i its energency mode when the actuation signals are reset. However, there are ten cases identified herein where systaa level manual resets may re-turn the equipment to its normal operating status.

The licensee committed to complete design modifications to the PCIS Groups I, II, and III. EG&G reviewed these modifications and reported them tech-_

nically satisfactory. I&E should confirm the successful installation an63 testing of these modifications.

i The licensee offered justifications in lieu of corrective modifications for the renaining nine cases. We find the justifications acceptable on the basis discussed in the Safety Evaluation Report.

With this SER, we conclude that the ESF reset controls for this nuclear plant comply with NRC criteria, subject to I&E confinnation as previously noted. .

gGM 8208050066 820728 DR ADOCK 05000 Thomas M. Novak, Assistant Director for Operating Reactors, DL

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SAFETY EVALUATION REPORT QUAD CITIES NUCLEAR POWER $TATION, UNITS 1 AND 2 LICENSEE RESPONSE TO'I&E BULLETIN BO-06, ENGINEERED SAFETY FEATURES TESF) RESET CONTROLS

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INTRODUCTION Instances have been reported at operating nuclear power plants where it has been found that following the reset of an ESF actuated signal certain equipment, e.g., ventilation dampers, motors, and valves, would return to the normal mode, which could compromise the protective actions of the af-fected systems. As a result, on liarch 13, 1980, the flRC issued IAE Bulletin 80-06 requesting certain actions to be taken by licensees for all PWR and BWR facilities with operating licenses.

EVALUATION The enclosed report (EGG 1183-4212) was prepared for us by EGAG, Inc., San Ramon, California, as part of our technical assistance contractor program.

It provides their technical evaluation of the, licensee's response to I&E Bulletin 80-06 in accordance with NRC-provided guidance.

EG&G reported the licensee's conclusion that all safety-related equipment remains in its emergency mode upon reset of the ESF actuating signals.

However, there are ten cases where system level manual resets may return the equipment to its normal operating status. -

The licensee committed to complete design modifications to PCIS Groups I, II, and III.

EG&G reviewed these modifications and reported them technically satisfactory. I&E should confirm the successful instaTTation and testing e

of these modifications.

8208050080 820728 PDR ADOCK 05000254 P PDR}