ML17329A077
| ML17329A077 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 06/06/1991 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML17329A076 | List: |
| References | |
| NUDOCS 9107120231 | |
| Download: ML17329A077 (4) | |
Text
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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO AMENDMENT NO. 156TO FACILITY OPERATING LICENSE NO. DPR-58 AND AMENDMENT NO. 140TO FACILITY OPERATING LICENSE NO. DPR-74 INDIANA MICHIGAN POWER COMPANY DONALD C.
COOK NUCLEAR PLANT UNIT NOS.
1 AND 2 DOCKET NOS. 50-315 AND 50-316
1.0 INTRODUCTION
By letter dated September 15, 1989, Indiana Michigan Power Company, the licensee for Donald C.
Cook Nuclear Plant Units 1 and 2, proposed to decrease the temperature at which laboratory testing of engineered safety features (ESF) and storage pool ventilation system (SPVS) charcoal samples is to be conducted from 130'C to 30'C.
This change had been recommended by the NRC staff in a meeting with the licensee in january 1986 on the basis that a test temperature of 30'C would be a more conservative indicator of the charcoal's efficiency under accident conditions than the current 130'C test temperature.
The staff believes the 130'C temperature might cause vaporization of volatile filter contaminants, including moisture, thus increasing the indicated charcoal efficiency.
The licensee is also proposing an administrative change to delineate ASTM D3803-1979 as the test standard for the charcoal laboratory test.
- 2. 0 EVALUATION The licensee conducted a series of nine parallel tests (at 30'C and 130'C) over a period of approximately 18 months to evaluate the staff's recommendation.
The tests confirmed that the charcoal efficiency at 30'C was lower and, therefore, would be a more conservative indicator of the charcoal's efficiency under accident conditions.
The licensee proposes to adopt this change in test temperature as well as a related administrative change.
The administrative change would delineate ASTM D3803-1979 as the test standard for the charcoal laboratory test for the ESF and storage pool ventilation systems.
Currently, the Technical Specifications (TS) require testing of the charcoal samples in accordance with the 1980 version of ANSI/ASME N510 which references ASTM D3803-1979 as the laboratory test standard.
There are three different Methyl, Iodide penetration tests within ASTM D3803-1979.
All tests are conducted at 95% relative humidity and each test is run at a different temperature (30'C, 80'C, and 130'C, respectively).
Therefore, the administrative change will delineate the test standard (ASTM D3803-1979) and the test temperature will dictate the test to be performed within this standard (30'C).
The staff finds the change in test temperature and associated administrative change to be acceptable.
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The staff has reviewed the licensee's proposal and test results and finds the
, proposal to delineate ASTH 03803-1979 as the tests standard for ESF and storage pool ventilation systems to be acceptable.
The staff also finds the licensee's proposal to change the testing temperature of the aforementioned filters from
'30'C to 30'C to be acceptable.
3.0 STATE CONSULTATION
In accordance with the Commission's regulations, the Michigan State official was notified of the proposed issuance of these amendments.
The State official had,no comments.
4.0 ENVIRONMENTAL CONSIDERATION
These amendments change requirements with respect to the installation or use of a facility component located within the restricted area as defined in 10 CFR Part 20 or a change in surveillance requirements.
The staff has determined that the amendments involve no significant increase in the amounts, and no significant change in the types, of any effluents that may be 'released offsite, and that there is no significant increase in individual or cumulative occupational radiation exposure.
The Commission has previously issued a proposed finding that these amendmt:nts involve no significant hazards consideration and there has been no public comment on such finding.
Accordingly, these amendments meet the eligibility criteria for categorical exclusion set forth in 10 CFR section 51.22(c)(9).
Pursuant to 10 CFR 51.22(b),
no environmental impact statement or environmental assessment need be prepared in connection with the issuance of these amendments.
5.0 CONCLUSION
The staff has concluded, based on the considerations discussed above that (I) there is reasonable assurance that the health and safety of the public will not be endangered by operation in the proposed
- manner, (2) such activities wi 11 be conducted in compliance with the Commission's regulations, and (3) the issuance of the amendments wi 11 not be inimical to the common defense and security or to the health and safety of the public.
The staff therefore concludes that the proposed changes are acceptable.
Principal Contributor:
W.
Pegg Date:
dune 6, 1991
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