ML14183A096
| ML14183A096 | |
| Person / Time | |
|---|---|
| Site: | Robinson  |
| Issue date: | 05/08/1987 |
| From: | Hopkins J Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML14183A097 | List: |
| References | |
| NUDOCS 8705130285 | |
| Download: ML14183A096 (5) | |
Text
7590-01 UNITED STATES NUCLEAR REGULATORY COMMISSION CAROLINA POWER & LIGHT COMPANY DOCKET NO. 50-261 ENVIRONMENTAL ASSESSMENT AND FINDING OF NO SIGNIFICANT IMPACT The U. S. Nuclear Regulatory Commission (the Commission) 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 H. B. Robinson Steam Electric Plant, Unit No. 2, located in Darlington County, South Carolina.
ENVIRONMENTAL ASSESSMENT Indentification of Proposed Action:
The exemption would grant relief from 10 CFR 50, Appendix J, paragraph II.A.3, which requires that all Type A (Containment Integrated Leak Rate) tests be performed in accordance 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 Total Time method. The licensee would rely, instead, on the Mass-Plot method described in ANSI/ANS 56.8-1981, "Containment System Leakage Testing."
The licensee's request for exemption and the bases therefor are contained in a letter dated April 17, 1987.
The Need for the Proposed Action:
The proposed exemption.is from the Standard referenced in 10 CFR 50, 8705130285 870508 PDR ADOCK 05000261.
P PDR
-2 Appendix J, which requires the containment leakage calculations be performed using either Point-to-Point or the Total Time method. The licensee has perfor med the calculations using the Mass-Plot method, a newer method which has been accepted by the NRC staff. Additionally, the revised Standard (ANSI/ANS 56.8-1981, "Containment Leakage Testing") specifies the use of the Mass-Plot method exclusively, and the new Standard is proposed to be incorporated into a planned revision of Appendix J.
Environmental Impacts of Proposed Action:
The proposed exemption would permit the substitution of the Mass-Plot method for the Total Time method in performing leakage calculations. The Mass-Plot 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 integrity and does not affect the risk of facility accidents. Thus, post-radiological releases will not be greater than previously determined, nor does the proposed exemption otherwise affect radiological plant effluents, nor result in any significant occupational exposure. Likewise, the exemption does not affect non-radiological plant effluents and has no other environmental impact. Therefore, the Commission 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. Such action would not reduce environmental impacts of the Robinson
-3 Unit 2 operations and would result in reduced operational flexibility or unwar ranted delays in power ascension.
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 H. B. Robinson Steam-Electric Plant Unit 2", dated April 1975.
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 Commission 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 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 Hartsville Memorial Library, Home and Fifth Avenues, Hartsville, South Carolina 29535.
Dated at Bethesda, Maryland this FOR THE NUCLEAR REG ATORY COMMISSION on B. Hopkins, Acting Director Project Directorate II-1 Division of Reactor Projects - I/II
- See Previously Concurred:
LA:PD21:DRPR PE:PD21:DRPR PM:PD21:DRPR OGC Acting Dir:PD21:DRPR
- PAnderson
- BMozafari/vag *KEccleston
- RBachman JHopkins 05/06/87 05/06/87 05/06/87 05/06/87 05/e/87
-3 Unit 2 operations and would result in reduced operational flexibility or unwar ranted delays in power ascension.
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 H. B. Robinson Steam-Electric Plant Unit 2", dated April 1975.
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 Commission 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 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 Hartsville Memorial Library, Home and Fifth Avenues, Hartsville, South Carolina 29535.
Dated at Bethesda, Maryland this FOR THE NUCLEAR REGULATORY COMMISSIO4 ghd Elinor G. Adensam, Director Project Directorate II-1 Division of Reactor Proje s -
I/II LA:
R PE:PD21:DRPR PM:PD21:DRPR D:PD21:DRPR PAn on BMozafari/vag KEccleston 5/ac
/a85 EAdensam 05/(,/87 05/(9/87 05//o /87 05/
/7 05/ /87
ACCELERATED DISTRIBUTION DEMONSTRATION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)
ACCESSION NBR.:8907250161 DOC.DATE: 89/07/20 NOTARIZED: NO DOCKET #
FACIL:50-261 H-.B. Robinson Plant, Unit 2, Carolina Power & Light C 05000261 72-0003 Carolina Power & Light Co., 50-261 07200003 AUTH.NAME AUTHOR AFFILIATION ROUSE, L. C.
Fuel Cycle -Safety Branch i
3.
RECIP.NAME RECIPIENT AFFILIATION EURY, L.W.
Carolina Power & Light Co.
SUBJECT:
Forwards Amend 8 to License SNM-2502 & FR notice.Amend changes frequency of effluent release reporting.
DISTRIBUTION CODE: DFO4D COPIES RECEIVED:LTR ENCL SIZE:
S TITLE:. Direct Flow Distribution,: 40,70,71 Dkts with LPDRs NOTES:FAC TYPE: Interim Spent Fuel Storage 07200003 H.B. Robinson - 2 A
RECIPIENT COPIES RECIPIENT COPIES D
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INTERNAL: NUDOCS-ABSTRACT
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NOTE 'IO ALL 'RIES RECIPmIEIS:
PLEASE EMP US TO RED USTE!
00NTACT HE DOCUMNr OINML DESK, ROCPI P1-37 (EXT. 20079)
D ELIMNTB 00R YU FRd DISTRBUMlt LISTS FOR DcCMRES YOU DOWT NEI TOTAL NUMBER OF COPIES REQUIRED: LTTR 4
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