ML19247D235
| ML19247D235 | |
| Person / Time | |
|---|---|
| Site: | Big Rock Point File:Consumers Energy icon.png |
| Issue date: | 09/01/1972 |
| From: | Sewell R CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | Oleary J US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| NUDOCS 8103020279 | |
| Download: ML19247D235 (3) | |
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.,a, u. a. e r a c o < we September 1, 1972 Mr. John F. O' Leary, Director Re:
Dacket No 50-155 Directorate of Licensing Licence No DPR-6 United States Atomic Energy Commi 'lon Washington, DC 205h5
Dear Mr. C'roary:
Attached is one (1) origiral a*.d thirty-nine (39) con-formed copies of Special Report No 13 titied " Containment Leak Rate Test - 1972." This test was conducted during April 1772 to fulfill the Big Rock Point Plant Technical Specification requirements.
The test was conducted, to the maximum extent practical, in accordance with Proposed Appendix J to 10 CFR 50.
Faced on the experience gained while periorming this leak rate test, we offer the follcwing comments on Appendix J:
1.
Section III. A.2(c) of the proposed amendment requires a h-hour stabilination period prior to the start of the leakage rate test.
Since installation of the comprescor air coolers at Big Rock point, we have not observed any stabilization problems which would be significantly improved by a h-hotu' vaiting period. We propose that if a stabilization period is re uired,Section III.A.2(c) of the s
proposed amendment be changed to read:
"c.
The containment test pressure shall be allowed to stabilize prior to the start of the leakage rate test for a period based on previous experience."
2.
Section III.A.3(c) implies that data may be used only on an hourly basis.
It is apparent that in keeping with good sta-tistical analysis, periods of shorter than one hour could be used to obtain more accurate results. We suggest that the second sentence of Section III.A.3(c) be changed to read:
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Docket No 50-155, License No DPR-6 September 1, 1972 "Meastu ?ments shall be recorded at least hourly and the leakage rate detelmined at least hourly with respect to the ini-tial set of sontainme.t test measurements."
Yours very truly, 4
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RES/dmb Ralph B. Sewell Nuclear Licensing Administrator CC:
- BHGrier, USAEC Secretary of the Commission, USAEC