ML20147F668
| ML20147F668 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 02/29/1988 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20147F666 | List: |
| References | |
| NUDOCS 8803080012 | |
| Download: ML20147F668 (4) | |
Text
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UNITED STATES I
~k NUCLEAR REGULATORY COMMISSION e
E WASMINGTON, D. C. 20066 e
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%..... J' SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO AMENDMENT NO. 41 TO FACILITY OPERATING LICENSE NPF-35 AND AMEN 0 MENT NO. 34 TO FACILITY OPERATING LICENSE NPF-52 OUKE POWER COMPANY, ET AL.
DOCKET NOS. 50-413 AND 50-414 CATAWBA NUCLEAR STATION, UNITS 1 AND 2 INTRCDUCTION By letter dated December 3,1987. Duke Power Company, et al., (the licensee) proposed amendments to the operating licenses for Catawba Nuclear Station, Units 1 and 2, which would change Technical Specification (TS) 3.6.1.2 to increase by 50% the allowed containment overall integrated leakage rate.
EVALUATION These amendments increase the containment overall integrated leakage rate in TS 3.6.1.2 from its previous L value of 0.20% per day to 0.30% per day.
(L a
is as defined in Appendix J to 10 CFR 50, corresponding at Catawba to a con a tainment pressure of 14.68 psig).
While this change would generally increase the doses estimated under accident conditions, the licensee has shown that by taking credit for the existing containment spray iodine removal system, the dose guidelines as specified in 10 CFR 100 and General Design Criterion-19 would not be exceeded. By its j
letter of December 3,1987, the licensee provided radiation exposure l
calculations for a design basis LOCA using the methodology from Revision 1 of the Standard Review Plan (SRP), Section 6.3.2.
SRP Section 6.5.2 recognizes that containment spray systems with boric acid spray solutions have been shown to be effective for removal of elemental and particulate iodine. This permits the licensee to take credit for the iodine removal effect of boric acid which is contained in containment spray water for other reasons. The analyses demonstrate for thyroid doses that the proposed 50% increase in the contain-ment leakage rate is nearly offset by the effect of the spray system.
Since noble gases are unaffected by containment sprays, the increased containment loakage rate results in increased whole body and skin doses. However, for the Catawba Nuclear Station, thyroid radiaticn exposure is the limiting criterion, and the licensee's calculations show that the whole body and skin doses remain well below the acceptance criteria in Appendix A of SRP Section 15.6.5 for offsite exposure (i.e.,10 CFR 100.11 values) and acceptance criteria in SRP 6.4 (i.e., GDC 19) for control room personnel.
8803080012 800229 DR ADOCK 050 3
. e The previous and revised results calculated by the licensee and the appro-priate criteria are:
Onsite Oose (Rem)
Offsite Dose (Rem)
Exclusion Low Area Population Inside Centml Room Boundary Zone Whole Whole Whole Body Skin Thyroid Body Thyroid Body Thyroid Current Values 0.46 9
25.9 2.99 115 0.761 50.8 Revised Values 0.70 14 18.9 4.47 131 0.863 29.7 Allowable Limits 5
30 30 25 300 25 300 For onsite and offsite doses, we examined the analyses and consequences of the increased containment leak rate as calculated by the licensee and concluded that the habitability systems for the shared control room are such that the doses meet the guidelines of GDC-19.
On the basis of our review, we find the licensee's revised analyses which reflect credit for the containment spray system to be consistent with SRP 6.5.2 i
and to result in doses within the guidelines of 10 CFR 100 and the requirements of GDC-19. The requested revision to TS 3.6.1.2 is, therefore, acceptable.
ENVIRONMENTAL CONSIDERATION These amendments involve changes to the use of facility components located with-in the restricted area as defined in 10 CFR Part 20.
The staff has detemined that the amendwents involve no significant increase in the amounts, and no significant change in the types, of any effluents that may be released offsite j
and that there is no significant increase in individual or cumulative occu-pational exposures. The NRC staff has made a detemination that the amendments involve no significant hazards consideration, and there has been no public j
connent on such finding. Accordingly, the amendments meet the eli criteria for categorical exclusion set forth in 10 CFR 51.22(c)(9)gibility Pursuant to 10 CFR 51.22(b) no environmental impact statement or environmental assessment need be prepared in connection with the issuance of these amendments.
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E ;0NCLUSION he Ccmission trade a proposed detemination that the amendments involve no ignificant hazards consideration which was published in the Federal Register 53 FR
- ni' on January 27, 1988.
The Comission consulted with the state f South Carolina.
t oublic coments were receive >d, and the state of South arolina did not have any coments.
? e have concluded, based on the considerations discussed above, that:
(1) here is reasonable assurance that the health and safety of the public will et be endangered by operation in the proposed manner, and (2) such activities ill be conductad in compliance with tha Comission's reculations, and the ssuance o' these amendrents will not be !nimical to the comon defense and ecurity or to the health anc safety of the public.
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? rincical Contributors:
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Mr. H. B. Tucker Duke Power Company Catawba Nuclear Station ec:
A.V. Carr, Esq.
North Carolina Electric Membership Duke Power Company Corp.
422 South Church Street 3400 Surmer Boulevard Charlotte, North Carolina 28242 P.O. Box 27306 Raleigh, North Carolina 27611 J. Michael McGarry, III, Esc.
Bishop. Libennan, Cook, Purcell Saluda River Electric Cooperative, and Reynolds Inc.
1200 Seventeenth Street, N.W.
P.O. Box 929 Washington, D. C.
20036 Laurens, South Carolina 29360 North Carolina MPA-1 Senior Resident Inspector Suite 600 Route 2 Box 179N 3100 Smoketree Ct.
York, South Carolina 29745 P.O. Box 29513 Raleigh, North Carolina 27626-0513 Regional Administrator, Region !!
U.S. Nuclear Regulatory Connission.
L.L. Williams 101 Marietta Street, NW, Suite 2900 Area Manager. Mid-South Area Atlanta, Georgia 30323 ESSD Projects Westinghouse Electric Corp.
MNC West Tower - Bay 239 P.O. Box 355 Pittsburgh, Pennsylvania 15230 Mr. Heyward G. Shealy, Chief Bureau of Radiological Health South Carolina Department of Health and Environmental Control 2600 Bull Street Columbia, South Carolina 29201 County Manager of York County York County Courthouse Karen E. Long York South Carolina 29745 Assistant Attorney General N.C. Department of Justice Richard P. Wilson, Esq.
P.O. Box 629 Assistant Attorney General Raleigh, North Carolina 27602 S.C. Attorney General's Office P.O. Box 11549 Spence Perry, Esquire Columbia, South Carolina 29211 General Counsel Federal Emergency Management Agency Piedmont Municipal Power Agency Room 840 100 Memorial Drive 500 C Street Greer, South Carolina 29651 Washington, D. C.
20472 Mr. Michael Hirsch Federal Emergency Management Agency Office of the General Counsel Room 840 500 C Street, S.W.
Washington, D. C.
20472 Brian P. Cassidy, Regional Counsel Federal Emergency Management Agency, Region I J. W. McCormach POCH Boston, Massachusetts 02109
J DATED:
February 29, 1988 AMENDMENT NO. 41 TO FACILITY OPERATING LICENSE NPF Catawba Nuclear Station, Unit 1 ANENDMENT NO. 34 TO FACILITY OPERATING LICENSE NPF Catawba Nuclear Station Unit ?
DISTRIBUTION:
Docket rite 150-413/414
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NRC PDR Local PDR PRC System NSIC PDII-3 Reading M. Rood K. Jabbour OGC *:th::da(4 4 -
D. Hagan J. Stone E. Jordan L. Harmon W. Jones T.Barnhart(8)
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L. Reyes S. Varga/G. Lainas E. Butcher k
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