ML20236M423

Advises of Removal of Containment Isolation Valve Position Switches from Facility Environ Equipment Qualification (Eeq) List as Result of Discussion During 870707 Eeq Enforcement Conference

ML20236M423
Person / Time
Site:	Big Rock Point File:Consumers Energy icon.png
Issue date:	08/05/1987
From:	Bordine T CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
NUDOCS 8708110062
Download: ML20236M423 (2)

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Consumers i i e

.- POW 8f l POWERING MICHIGAN'S PROGRESS General offices: 1945 West Parnell Road, Jackson, MI 49201 * (517) 788 0550 l

August 5, 1987

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I Nuclear Regulatory Commission Document Control Desk l Washington, DC 20555 1

_ DOCKET 50-155 - LICENSE DPR BIG ROCK POINT PLANT -

REMOVAL OF CONTAINMENT ISOLATION VALVE POSITION SWITCHES FROM THE EEQ LIST l

As a result of discussions during the July 7, 1987 EEQ enforcement conference in Glen Ellyn at Region III, Consumers Power Company evaluated the need for l environmentally qualified position indication for containment isolation I valves. This evaluation concluded no basis to include these position j indication circuits on the Big Rock Point EEQ list. This evaluation supported i our earlier discussions at the enforcement conference and in LER 67-008 in I that;

. No failure of the position switch will affect the ability of the l Containment Isolation Valves to close.  !

. The plant can be shut down in the absence of position indication with no impact on safety.

. False indication of the position lights will not cause any adverse operator actions.

Position switches were added to the EEQ list in December of 1984, to address concerns contained in the February 18, 1983 Franklin Research Center Technical Evaluation Report (TER), with respect to implementation of Regulatory Guide 1.97 Rev. 2. Specifically, the TER determined that since Big Rock Point must meet the requirements of Reg Guide 1.97 position indication schemes need to be environmentally qualified. In conclusion the TER states that ponition indication should not be removed from the EEQ list until the question of implementation of Reg Guide 1.97 is resolved by the NRC.

Guidance was provided by the NRC in a letter dated March 13, 1986 following evaluation of Systematic Evaluation Program Topic VII-3 " Systems Required for Safe Shutdown" that implementation of the requirements of Reg Guide 1.97 is

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OC0887-0122-NLO4 (0

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Nuclear Regulatory Commission 2 Big Rock Point Plant 3.

Containment Isolation Valve Position Switches August 5, 1987 not required unless the necessity evolves from the detailed Control Room Design Review (CRDR). Conclusions related to the CRDR will be identified in a summary report as scheduled via the Big Rock Point Integrated Plan.

For the reasons above, the Containment Isolation Valve position switches have k en removed from the Big Rock Point EEQ list.

. W l Thomas C Bordine Staff Licensing Engineer CC Administrator, Region III, NRC NRC Resident Inspector - Big Rock Point l

i OC0887-0122-NLO4