ML20195H606

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Environ Assessment & Finding of No Significant Impact Supporting Issuance of Exemption from 10CFR50 App J Re Containment Integrated Leak Rate Tests & to Allow Calculations to Be Performed Using mass-point Method
ML20195H606
Person / Time
Site: Brunswick  Duke Energy icon.png
Issue date: 01/14/1988
From: Buckley B
Office of Nuclear Reactor Regulation
To:
Shared Package
ML20195H610 List:
References
NUDOCS 8801200275
Download: ML20195H606 (5)


Text

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7590-01 UNITED STATES NUCLEAR REGULATORY COMMISSION CAROLINA POWER & LIGHT COMPANY BRUNSWICK STEAM ELECTRIC PLANT, UNITS 1 AND 2 DOCKET NOS. 50-325/324 ENVIRONMENTAL ASSESSMENT AND FINDING 0F NO SIGNIFICANT IMPACT The U. S. Nuclear Regulatory Comission (the Comission) is considering issuance of an exemption from the requirements of Appendix J to 10 CFR Part 50 to Carolina Power & Light Company, (the licensee), for the Brunswick Steam Electric Plant, Unit Nos.1 and 2, located in Southport, North Carolina.

ENVIRONMENTAL ASSESSMENT Identification of Proposed Action:

The exemption would grant relief from '

,FR 59, Appendix J, paragraph III. A.3, which reou'res that all 7ype A (Containment Integrated Leak Rate) tests be performed in accorcance with ANSI N45.4-1972, Leakage Rate Testing of Containment Structures for Nuclear Reactors." ANSI N45.4 requires that leakage calculations be performed using the Point to Point Method or the Total Time method. The licensee would rely, instead, on the Mass-Point method described in ANSI /ANS 56.8-1981, "Containment System Leakage Testing."

l The licensee's request for exemption and the bases therefor are contained in a letter dated August 5, 1987.

The Need for the Proposed Action:

The proposed exemption is from the Standard (ANSI N45.4-1972) referenced in 10 CFR Part 50, Appendix J, which requires the containment leakage calculations l

be perfomet' using either the Point-to-Point or Total Time method. The licensee l

has perfomed the calculations using the Mass-Point method, a newer snethod that has been accepted by the NRC staff. Additionally, the revised St:ndard pgr228aM Bi8@r I

P

. i r

(ANSI /ANS 56.8-1981, "Containment Leakage Testing") specifies the use of the Mass-Point method exclusively; and the new Standard is proposed to be incorpor-ated into a planned revision of Appendix J.

i Environmental Impacts of Proposed Action:

The proposed exemption would pemit the use of the Mass-Point method in performing leakage calculations. The Mass-Point method has been accepted by the NRC staff as a more accurate technique that will increase confidence in the integrity of the containment. This exemption will not affect containment inte-grity and does not affect the risk of facility accidents. Thus, post-accident radiological releases will not be greater than previously determined, nor does the proposed exerrption otherwise affect radiological plant effluents, or result in any significant cccupational exposure. Likewise, the exemption does not af-fect non-radiological plant effluents and has no other environmental impact.

Therefore, the Comission concludes that there are no significant radiological or non-radiological environmental impacts associated with the proposed exemption.

Alternatives to the Proposed Action:

Because it has been concluded that there is no measurable impact associated with the proposed exemption, any alternatives to the exemption will have either no environmental impact or greater environmental impact.

The. principal alternative to the exemption would be to deny the requested exemption.

auch action would not reduce environmental impacts of the Brunswick l

Unit 1 and 2 operations and would result in reduced operational flexibility.-

l

+-

JAN 141888 a Alternative Use of Resources:

This action does not involve the use of resources not previously con-sidered in connection with the "Final Environmental Statement Related to the Operation of the Brunswick Steam-Electric Plant, Units 1 and 2," dated January 1974.

Agencies and Persons Consulted:

The NRC staff reviewed the licensee's request and did not consult other agencies or persons.

FINDING OF NO SIGNIFICANT IMPACT The Comission has detennined not to prepare an environ $ntal impact statement for the proposed exemption.

Based on the foregoing environmental assessment, the staff concludes that the proposed action will not have a significant effect on the quality of the human environment.

For further information with respect to this action, see the application for exemption previously listed, which is available for public inspection at the Comission's Public Document Room,1717 H Street, N.W., Washington, D.C.

20555 and at the University of North Carolina at Wilmington, William Madison Randall Library, 601 S. College Road, Wilmington, North Carolina 28403-3297.

I Dated at Bethesda, Maryland this 14th day of January 1988.

FOR THE NUCLEAR REGULA'0RY COMMISSION N

Bart C. Buckley, Acting Director Project Directorate 11-1 Division of Reactor Projects - 1 II

  • See previous concurrence (J;

LA:PD21:DRPR PE:PD21:DRPR PM:PD21:DRPR OGC-B D:PD 1:DR PAnderson/dsf*

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' Alternativa Use of Resources:

This action does not involve the use of resources not previously con-sidered in connection with the "Final Environmental Statement Related to the Operation of the Brunswick Steam-Electric Plant, Units 1 and 2," dated January 1974.

Agencies and Persons Consulted:

The NRC staff reviewed the licensee's request and did not consult other agencies or persons.

FINDING OF NO SIGNIFICANT IMPACT The Comission has determined not to prepare an environmental impact statement for the proposed exemption.

Based on the foregoing environmental assessment, the staff concludes that the proposed action will not have a significant effect on the quality of the human environment.

For further information with respect to this action, see the application for exemption previously listed, which is available for public inspection at the Commission's Public Document Room,1717 H Street, N.W., Washington, D.C.

20555 and at the University of North Carolina at Wilmington, William Madison Randall Library, 601 S. College Road, Wilmington, North Carolina 28403-3297.

Dated at Bethesda, Maryland this 14th day of January 1988.

FOR THE NUCLEAR REGULATORY COMMISSION N

Bart C. Buckley, Acting Director Project Directorate 11-1 Division of Reactor Projects - I II

  • See previous concurrence (2;

LA:PD21:DRPR PE:PD21:DRPR PM:PD21:DRPR OGC-B D:PD 1:DR PAnderson/dsf*

BMozafari*

ESylvester*

SHLewis*

EAcensam 12/22/87 12/31/87 12/31/87 1/11/88 1/1j/88

~

Brunswick Steam Electric Plant

'Mr. E. E. Utley Units 1 and 2 Carolina Power & Light Company CC:

Mr. C. R. Dietz Mr. P. W. Howe Plant General Manager Vice President Brunswick Nuclear Project Brunswick Nuclear Project Box 10429 Box 10429 Southport, North Carolina 26461 Southport, North Carolina 28461 Mr. R. E. Jones, General Counsel Mr. M. A. Cole Special Deputy Attorney General Carolina Power & Light Company State of North Carolina P. O. Box 1551 Post Office Box 629 Raleigh, North Carolina 27602 Raleigh, North Carolina 27602 Mr. Mark 5. Calvert Mr. Robert P. Gruber Associate General Counsel Carolina Power & Light Company Executive. Director Public Staff - NCUC Post Office Box 1551 Post Office Box 29520 Raleigh, North Carolina 27602 Raleigh, North' Carolina 27626-0520 Mr. Christopher Chappell, Chaiman Board of Conrnissioners Post Office Box 249 Bolivia, North Carolina 28422 Mrs. Chrys Baggett State Clearinghouse Budget and Management 116 West Jones Street Raleigh, North Carolina 27603 Resident Inspector U. S. Nuclear Regulatory Comission Star Route 1 Post Office Box 208 Southport, North Carolina 28461 Regional Administrator, Region II U. S. Nuclear Regulatory Cocynission 101 Marjetta Street, Suite 2900 Atlanta, Georgia 30303 Mr. Dayne H. Brown, Chief Radiatier. Protection Branch Division of Facility Services N. C. Department of Hun 6an Resources 701 Barbour Drive t

Raleigh, North Carolina 27603-2008

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