ML20078S868
| ML20078S868 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 02/22/1995 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20078S865 | List: |
| References | |
| NUDOCS 9502270326 | |
| Download: ML20078S868 (3) | |
Text
M Rio a
UNITED STATES g
NUCLEAR REGULATORY COMMISSION e
WASHINGTON, D.C. 2066Ho01 o
+9.....,o l
SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO AMENDMENT NO.132 TO FACILITY OPERATING LICENSE NO. DPR-19 AND AMrNDMENT NO.126 TO FACILITY OPERATING LICENSE NO. DPR-25 COMMONWEALTH EDISON COMPANY DRESDEN NUCLEAR POWER STATION. UNITS 2 AND 3 DOCKET NOS. 50-237 AND 50-249 1.0 JMfRODUCTION By letter dr.ted July 29, 1992, as supplemented January 14, 1993, and February 16, 1993, Commonwealth Edison Company (Comed, the licensee) proposed to upgrade the existing custom Technical Specifications (TS) to the Boiling i
Water Reactor (BWR) Standard Technical Specifications (STS). Dresden has recently rescheduled the Unit 2 refueling outage from March 4,1995, until June 1995. Currently, the surveillance frequency for certain Inservice Testing (IST) requirements expires on February 21, 1995. The existing current TSs do not make provisions for a grace period for surveillance frequencies of the IST program.
In accordance with BWR STS guidance, the TSs regarding IST l
proposed in the July 29, 1992, application, allow the flexibility to perform these tests appropriately during refueling outages (where applicable) by providing a 25 percent extension to IST surveillance intervals. By letter dated January 27, 1995, Comed requested the staff to review and approve just that portion of the July 29, 1992, application, dealing with the implementation of the IST program in Section 3.0/4.0 of the proposed TSs.
This suppleme'nt was requested solely to prevent a violation of the requirements of 10 CFR 50.55a and did not change the initial proposed no significant hazards consideration determination.
2.0 EVALUATION The proposed TSs as clarified in the January 27, 1995, supplement, upgrade the current TSs (which do not reference the IST program) by adopting the STS
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guidelines referencing the requirements of 10 CFR 50.55a concerning the IST program. Specifically, the proposed TSs refer to the implementation of the i
IST program per the requirements of 10 CFR 50.55a. The proposed TSs mandate compliance with 10 CFR 50.55a, the requirements of the IST program, except when relief has been provided in writing by the Commission. The proposed TSs provide clarification of the frequencies for performing IST activities required by 10 CFR 50.55a which incorporates, by reference, the requirements of Section XI of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code (Code). The clarification provided by the proposed TSs ensures consistency in the surveillance intervals throughout the TSs and eliminates any ambiguities relative to performing the tests required by 9502270326 950222 PDR ADOCK 05000237 P
- Section XI of the ASME Code. The proposed TSs include a provision allowing a 25 percent extension for the IST required test frequencies. The proposed 25 percent surveillance extension allows a required surveillance to be extended up to 25 percent of the required surveillance interval.
It is not intended that this provision be used repeatedly as a conv9nience to extend IST surveillance intervals beyond that specified for surveillances that are not performed during refueling outages. Likewise, it is not the intent that refueling outage surveillances be performed during power operation unless it is consistent with safe plant operation. The limitation of 25 percent is based on engineering judgement and the recognition that the most probal.e result of any particular surveillance being performed is the verification of conformance with the surveillance requirements. The proposed provision is sufficient to ensure that the reliability ensured through surveillance activities is not significantly degraded beyond that obtained from the specified surveillance interval.
The proposed TS is consistent with the guidelines of the BWR-4 STS and the BWR Improved Standard Technical Specifications contained in NUREG-1433, " Improved BWR-4 Technical Specifications." The proposed changes provide clarification of the implementation of the IST program and how it affects the other required surveillances in the Dresden, Units 2 and 3, TSs. The proposed TS change does not adversely affect the safe operation of Dresden, Units 2 and 3.
The proposed amendment clarifies the requirements of the IST program and its implementation at Oresden. Based on the above, the staff finds the proposed changes to the TSs are acceptable.
3.0 STATE CONSULTATION
In accordance with the Commission's regulations, the Illinois State official was notified of the proposed issuance of the amendments. The State official had no comments.
4.0 ENVIRONMENTAL CONSIDERATION
The amendments change a surveillance requirement. The NRC 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 the amendments involve no significant hazards consideration, and there has been no public comment on such finding (58 FR 34011). Accordingly, the amendments meet the eligibility criteria for categorical exclusion set forth in 10 CFR 51.22(c)(9).
Pursuant to 10 CFR 51.22(b), no environmental impact statement or environmental assessment need be prepared in cunnection with the issuance of the amendments.
5.0 CONCLUSION
The Commission has concluded, based on the considerations discussed above, that:
(1) there is reasonable assurance that the health and safety of the publir will not be endangered by operation in the proposed manner, (2) such
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activities will be conducted in compliance with the Commission's regulations, and (3) the issuance of the amendments will not be inimical to the common defense and security or to the health and safety of the public.
Principal Contributor:
J. Stang Date: February 22, 1995 t
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