IR 05000315/1981013
| ML20032E160 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 10/29/1981 |
| From: | Spessard R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Dolan J AMERICAN ELECTRIC POWER SERVICE CORP., INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
| Shared Package | |
| ML20032E161 | List: |
| References | |
| NUDOCS 8111190726 | |
| Download: ML20032E160 (2) | |
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NUCLEAR RE!ULATORY COMMISSION
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. tits Docket No. 50-315 Docket No. 50-316 la I l.
ON NOVI 81981 -
American Electric Power Service
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ATTN:
Mr. John E. Dolan f'#
Vice Chairman
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Engineering
2 Broadway New York, NY 10004 Gentlemen:
Thank you for your letter dated September 25, 1981, (AEP: NRC: 0613)
informing us of the steps you have taken to correct the noncompliance which we brought to your attention in Inspection Report No. 50-315/81-13; 50-316/81-16 forwarded by our letter dated August 11, 1981. We have no further questions concerning items I and 2 and will examine your corrective action on these matters during a subsequent inspection.
In regard to the method used in determining leak correction for isolation valves tested at lower than functional pressure differential we still maintain that our equation is consistent with ASME Section XI.
The code allows testing at lower than functional pressure only if the valve is self seating.
In calculating the leak rate you must conservatively assume that the leak rate is proportional to the differential pressure thus if the functional pressure is greater than the test pressure the calculated leak rate will be higher than the measured leak rate.
Since you state that this question of interpretation will be presented to ASME Section XI Committee Chairman, we will await the committee decision.
Although your response to the iter. discussed in Appendix B of our August 11, 1981 letter described certain corrective action it did not address the specific issue.
Our primary concern in this matter continues to be the adequacy of the hourly security checks given to the barriers.
Per our discussion with your Messrs. J. I. Castresana and G. M. Gurican on October 6, 1981, we 9111190726 811029 yDRADCCK 0500033y
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American Electric Power Service-2-OCT 2 91981 Coporation understand you will supplement your response to this item within twenty days of your receipt of this letter.
Your cooperation with us is appreciated.
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Sincerely,
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R. L. Spessard, Director f
Division of Resident and Project Inspection ec:
D. V. Shaller, Plant Manager cc w/ltr dtd 9/25/81, w/Part 2.790(d) Information Enclosures:
DMB/ Document Control Desk (RIDS)
Resident Inspector, RIII cc w/o ltr dtd 9/25/81, w/o Part 2.790(d) Information Enclosures:
Ronald Callen, Michigan Public Service Commission RII I RIII II RIII RIJI mmfor
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