ML20137X779

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Confirmatory Action Ltr Re 860228 Telcon W/Jw Lynch Outlining Listed Actions to Be Taken to Assure Operability of Reactor Control Room Emergency Ventilation Sys,Per Tech Specs & GDC 19
ML20137X779
Person / Time
Site: Trojan File:Portland General Electric icon.png
Issue date: 02/28/1986
From: Martin J
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
To: Withers B
PORTLAND GENERAL ELECTRIC CO.
References
CAL, TAC-61289, NUDOCS 8603120012
Download: ML20137X779 (2)


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'!" 3 . NUCLEAR REGULATORY COMMISSION

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E REGION V 0, 1450 MARI A LANE, SUITE 210

% *****. ,o'g WALNUT CREEK, CALIFoRNI A 94596 FEB 2 8 as Docket No. 50-344 Portland General Electric Company CONFIRMATORY ACTION LETTER 121 S.'W. Salmon Street Portland, Oregon 97204 Attention: Mr. Bart D. Withers Vice President Nuclear

Subject:

Operability of Reactor Control Room Emergency Ventilatior System Gentlemen:

It is my ' understanding, as a result of our conversation with Mr. J. W. Lynch, of your staff on February 28, 1986, that you intend to take the following action to confirm and/or assure that the control room emergency ventilation system will operate and is being tested for operability in accordance with the technical specifications and General Design Criteria 19 of Appendix A to 10CFR50 (GCD-19).

1. Determine the basis for the 110*F control room temperature limit and potential effect on control room equipment. (Long Term)
2. The loose /open aluminum / sheet metal fomed cover has been replaced and appropriately secured. Determine the affect this opening had on the operability of the system. (Long Term)
3. Determine the effect the drain line cross connection had on system performance prior to its being modified on February 27-28, 1986.

(Long Term)

4. Jetermine the effect that the manual position of the control switch for the dampness had on automatic operation of the system, given the lack of specific procedures. (Long Term). Administrative control now requires this switch (s) to be in " automatic".
5. You believe that the system as now configured and being operated conforms to the technical specifications and complies with CDC-19.

The potential for inadvertent makeup air to the control room during emergency ventilation system operation will be evaluated. (Short Term)

6. The operating configuration of CB-3 and CB-4 will be justified.

Administrative procedures will be implemented to verify shutdown following. control room isolation. (Short Term)

7. The operability of the system for toxic gas, including procedural requirements will be verified. (Long Term. Short Term, if possible)

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a It is our understanding that the short term items should be dispositioned by Tuesday, March 4, 1986, and that you will provide us a schedule for completion of the long term items.

If my understanding concerning your proposed actions, as summarized above, is not correct, you should promptly notify this office in writing.

Sincerely, J. B. Martin Regional Administrator cc: J. W. Lentsch W. S. Orser-State of OR PC S' DA

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