ML20045B806

Safety Evaluation Supporting Amend 159 to License DPR-61

ML20045B806
Person / Time
Site:	Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png
Issue date:	06/11/1993
From:	Office of Nuclear Reactor Regulation
To:
Shared Package
ML20045B789	List: ML20045B788 ML20045B806
References
NUDOCS 9306210111
Download: ML20045B806 (2)

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UNITED STATES i\\

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WASHINGTON. O C. 20555-0001 SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO AMENDMENT NO. 159 TO FACILITY OPERATING LICENSE NO. DPR-61 CONNECTICUT YANKEE ATOMIC POWER COMPANY HADDAM NECK PLANT DOCKET NO. 50-213

1.0 INTRODUCTION

By letter dated March 16, 1993, as supplemented on May 28, 1993, the Connecticut Yankee Atomic Power Corgany (the licensee) submitted a request for changes to the Haddam Neck Plant Technical Specifications (TS).

The requested change would delete a reference to ANSI N45.4 in the Technical Specifications Surveillance Requirement Section 4.6.1.2.

It will maintain the reference to 10 CFR Part 50, Appendix J, which cites acceptable methods for calculating containment integrated leakage rates. The May 28, 1993, letter provided clarifying information that did not change the initial proposed no significant hazards consideration determination.

2.0 EVALUATION The purpose of this change is to allow the Haddam Neck Plant to perform alternative methods of calculating containment integrated leakage rates as allowed by 10 CFR Part 50, Appendix J.

Haddam Neck's current TS only references ANSI N45.4-1972 for the calculation of leakage rate. This standard only entails evaluation of leakage by the Total Time method.

Modifying TS Surveillance Requirement 4.6.1.2, to reference only 10 CFR Part 50, Appendix J, will allow the licensee an additional method for calculating the integrated leakage rate.

By conference call on May 26, 1993, the staff informed the licensee that Bechtel Corporation's Topical Report BN-

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TOP-1, Revision 1, has been previously approved by the staff in a Safety Evaluation dated January 15, 1973. As such, plant specific staff approval for use of this topical report is not needed.

By letter dated May 28, 1993, the 1

licensee withdrew its request for staff approval for the use of Bechtel Topical Report BN-TOP-1.

As noticed in the Federal Reaister at 53 FR 45891, dated November 15, 1988, the NRC revised 10 CFR Part 50, Appendix J, to include the mass point method.

This change is an administrative change as it only modifies the TS to remove a reference to a specific method for calculating integrated leakage rate (ANSI 9306210111 930611 DR ADDCK 0500 3

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' N45.4) which is more restrictive than the current rule. This change will make the Haddam Neck TS consistent with the modifications made to the rule in November 1988 and any future modifications as the change will require that the containment integrated leak rate test be consistent with 10 CFR Part 50, Appendix J.

Based on the above, the staff concludes that the proposed TS change is acceptable.

3.0 STATE CONSULTATION

In accordance with the Commission's regulations, the Connecticut state

- i official was notified of the proposed issuance of the amendment. The state official had no comments.

4.0 ENVIRONMENTAL CONSIDERATION

The amendment changes surveillance requirements.

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 that may be released offsite, and that there is no significant increase in individual or cumulative i

occupational radiation exposure.

The Commission has previously issued a proposed finding that the amendment involves no significant hazards consideration, and there has been no public comment on such finding (58 FR 19475). Accordingly, the amendment meets 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 connection with the issuance of the amendment.

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 public will not be endangered by operation in the proposed manner, (2) such activities will be conducted in compliance with the Commission's regulations, and (3) the issuance of the amendment will not be inimical to the common defense and security or to the health and safety of the public.

Principa.1 Contributor:

A. Wang Date:

June 11, 1993 i

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