ML20195D585
| ML20195D585 | |
| Person / Time | |
|---|---|
| Site: | Salem  |
| Issue date: | 10/27/1988 |
| From: | Butler W Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20195D589 | List: |
| References | |
| NUDOCS 8811070072 | |
| Download: ML20195D585 (4) | |
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7590-01 t
flNITED STATES NUCLEAR REGl't ATARY 'OM8!$$f 0M Pil8LIC SERV!CE ELECTRIC 4 GAS COMPANY SALEM GENEsATING STATION. UNIT 2 DOCKET NO. 50 311 ENV!RONkENTAL ASSESSMENT AND FINDING 0F NO SIGNIFICANT !MPACT f
The 11.5. Nuclear Regulatory Comission (the Corrission) is considering t
issuance of a temporar.v exem) tion from the requirements of Paragraph 50.46(a)(1)(1) to 10 CFR Part 50 to Public Service Electric and Gas Company, et. al. (the licensee) for the Salem Generating Station, Unit 2, located at the licenste's site in Salem County, New Jersey.
ENVIRONMENTAL ASSESSMENT Identification of Preposed Action: The licensee's request for an exen tion and the basis therefore are contained in a letter dated October 21, 1988. During the fourth refueling cutage at Salem, Unit 2, all row I steam generator tubes were plugged and some unrecoverable loose parts were left in the Reactor Coolant System. The licensee has perforved an analysis to demonstrate that the aforementioned conditions have no safety significant impact on the operation of the facility. However, the current Emergency Core Cooling System (ECCS) evaluation model (Westinghouse 1978) is no longer acceptable for 'urther licensing actions as detailed in Generic Letter 86-16 Westinghouse ECCS Evaluation Models, dated October 22, 1986. Paragraph ss1.$070072 881027 ADOCK0500g1 PDR P
2 50.46(a)(1)(1) of 13 CFR Part 50 requires ECCS cooling perfonnance to be calculated in accordance with an acceptable model. The proposed exaection would temporarily exempt the licensee from this requirement until March 31, 1989, thus allowing Salem. Unit 2, to operate while the analysis is being performed.
4 The Need for the Proposed A: tion: The proposed temporary exemption from the reculation is twiired to allow Salem. Unit 2, to restart from the fourth refueling outage and operate until March 31, 1989 when the ECCS reanalysis will be completed. Without this temporary exemption, Salem. Unit 2, would be forced to remain shutdown until the ECCS reanalysis is completed, a period of about five months.
Environmental Impacts of the Preposed Action: There are no adverse environmental impacts associated with the proposed action. During the period of the exemption the plant will continue with normal operations. The licensee has analyzed the existing conditions (i.e. 2.7% of the steam gererator tubes plugged and loose parts in the reactor coolant systemi for their effect on the large break Loss of Coolant Accident (LOCA) analysis.
The results show that the plugged steam generator tubes would increase the peak clad temperature (PCT) by 28'F.
In addition, if the loose parts were to be lodged in their most unfavorable location and a LOCA occurred, the PCT for that location would increase by 22*F. However, the current licensing models use a higher fuel rod back'111 pressure than actually exists in fuel rods that are currently in use.
If this change in actual fuel rod backfill pressure is accounted for, the PCT is reduced by about 100*F. The net i
calculated change in PCT is a reduction of about 50'F.
The criteria of 4
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10 CFR 50.46(b) will continue to be satisfied. Therefore, the proposed change does not increase the crobability or consequences of accidents, no changes are being made in the allowable amounts and no significant changes are being made in the types of any effluents that may be released offsite, and there is no l
significant increase in tht allowable individual er cumulative occupational l
radiation exposure, t.ikewise, the exemption dces not affect non-radiological plant effluents and has no other environmental impact. Therefore, the Comunission cencludes that there are no significant radiological or non-j radiological envirentrental impacts associated witi the proposed exemption.
I Alternative to the Proposed Ac_ti g Because we have concluded that there is i
no measurable environmental impact associated with the proposed exemption, any alternatives to the exemption will have eithe* no environmental impact o,*
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greater environmental impact.
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The principal alternative would be to deny tte requested exemption, t
Such action would not reduce environmental impacts of Salem Unit 2 operations and would result in a delay of about five months ii restarting Salem. Unit 2.
Alternative Use of Resources: These actions do nott involve the use of resources not previously considered in connection with the "Final r
Environmental Statement Related to Operation of Salom Generating Station.
Units 1 and 2." dated April 1973.
Acencies and Persons Consulted: The NRC reviewed thd licensee's request that supports the proposed ex o tion.
The==C staff did not consuit other i
agencies er persons.
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4 FINDINGS OF N0 SIGNIFICANT IMPACT f
Based upon the foregoing environmental assessment, we conclude that the proposed exemption will not have a significant effect on the quality of the human environment. Accordingly, the Commf sition has determined not to prepare an environmental impact statement for the proposed exception.
For further details with respect to the proposed action, see the licensee's recuest for the exemption dated October 21, 1988, which is available for public inspection at the Commission's Public Document Room, l
2120 L Street, N.W., Washington, D.C., and at the Salesa Free County Fublic i
Library, 112 W. Arcadway, Salem, New Jersey 08079.
Dated at Rockville, Maryland this 27th day of Oct.1988.
t FOR THE NUCLEAR REGULATORY C0m !SS10N i
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Walter R. Butler, Ofrector Protect Directorate t ?
Division of Reactor Projects I/!!
Office of Muclear Reactor Regula ion I
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