ML20127P563
| ML20127P563 | |
| Person / Time | |
|---|---|
| Site: | Pilgrim |
| Issue date: | 01/27/1993 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20127P561 | List: |
| References | |
| NUDOCS 9302010333 | |
| Download: ML20127P563 (2) | |
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NUCLEAR REGULATORY COMMISSION
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's,.....J SAFETY EVAJJ)ATION BY TH.E OFFICE OF NU M AR REACTOR REGULATION P1L ATED_TO AMENDMENT NO.146 T0 ! ACIlliY OPEPATING LICENSE NO. OPR-35 BOSTON ED{ SON COMPA]1y PILGRIM NUCLfAR POWER STATION DOCKET _NO. 50-293 1.0 iMTRODUCTION By "BECO-92-121, Application for Amend to License DPR-35,proposing Changes to TS Section 2.1, Safety Limits, to Reflect Use of Advanced GE-10 Fuel Design & Section 3.3.C, Scram Insertion Times, to Correct Error in [[system" contains a listed "[" character as part of the property label and has therefore been classified as invalid. Scram Insertion Time|letter dated October 23, 1992]], the Boston Edison Company (the licensee),
submitted information regarding tha minimum critical power ratio (MCPR) and control red scram insertion time.
The licensee requested technical specifications (TS) changes justified by the submitted information.
Our review and evaluation follow.
2.0 EVALUA'110J In safety limit 2.1.2, the MCPR is presently 1.04 and is proposed to be changed to 1.07.
This change request is based on the future use of GE 8 x 8 NB-3 fuel in operating cycle 10. The proposed safety limit is based on the NEDE-31152p, Revision 2, "GE fuel Bundie Designs" which is referenced in GESTAR-II Revision 10 and has previously been found to be acceptable.
Therefore, the proposed change to 1.07 is acceptable.
The control rod scram insertion time is presently listed in technical specification 3.3.C.2 as 5.30 seconds for 90 percent insertion from the fully withdrawn position and is the value used in accident analyses. However, it was discovered that this value is appropriate for BWR2 and not for Pilgrin, which is a BWR3 unit.
The correct value i:. 3.71 seconds. The proposed value is mo'e conservative than that used in the analysas.
It is also justified by plant measurements and the associated, approved GE topical report; thus it is acctptable.
The staff has completed its review of the proposed technical specification changes for the Pilgrim plant for MCPR and the rod scram insertion times.
We find the proposed changes acceptable based on the justification provided in the licensee's evaluation.
3.0 SB Tfl 0NSULTATION In acccedance with the Commission's regulation, the Passachusetts Stata d
Official was notified of the proposed issuance of the anendment.
The State official had no comments.
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4 4 l 4.0 E!nLP@lENTAL Cons 10ERATInN Ihe amendment changes a requirement with respect to installation or use of a i
facility component located within the restricted area as defined in 10 CFR l
Part 20.
The NRC staff has determined that the amendment involves no significant increase in the amounts, and no significant change in the types, of any effluents
- Sat may be released offsite, and that there is no significant inc, ease in individual or cumulative occt.pational radiatica
- exposare, lhe Commission has previously issued a proposed finding that the amendment involves no significant hazards consideration, and there has been no public (xnent on such finding (57 FR 58245).
Accordingly, the amendment meets the eliaibility criteria for categorical exclusion set forth in 10 CFR 51.22(c)(9),
Pursuant to 10 CFR Si.22(b) no environmental impact statement or environmental assessment need be prepared in connection with the issuance of the amendment, 5.0 [0BCLU1100 The Commission has concluded, based on the considerations discussed above, that:
(1) there is reasonable assurance that the health and safety of the public will not be endangered by operation in the proposed manner, (2) such act rvities will be conducted in compliance with the Commission's regulations, and (3) the issuance of the a:rendment will not be inimical to the common
-tefense and security or to the health and safety of the public, Piincipal Contributor-L. Lois Date:
January 27, 1993 4
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