ML17174B084
| ML17174B084 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 01/03/1992 |
| From: | Barrett R Office of Nuclear Reactor Regulation |
| To: | Kovach T COMMONWEALTH EDISON CO. |
| References | |
| TAC-M82153, TAC-M82154, NUDOCS 9201070280 | |
| Download: ML17174B084 (3) | |
Text
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Docket Nos. 50-237 50-249
- Mr. Thomas J. Kovach Nuclear Licensing Manager January 3, 199
- DISTRIBUTION Docket Fi le NRC & Local PDRs PDIII-2 r/f ACRS(lO) P-315 OGC 15B18 CCheng 7D4 Plant File B. Clayton RIII Conunonwealth Edison Company - Suite 300 OPUS West I II E. Jordan MNBB 3701 B. Boger J. Zwolinski R. Barrett C. Moore 1400 OPUS Place Downers Grove, Illinois 60515 B. Siegel
Dear Mr. Kovach:
SUBJECT:
RELIEF REQUEST CR-13, REQUEST FOR APPROVAL TO IMPLEMENT PROVISION OF ASME APPROVED CODE CASE N-498 FOR DRESDEN UNITS 2 AND 3 (TAC NOS. M82153 AND M82154)
By letter dated August 20, 1991, you requested approval for the implementation of the alternative rules of ASME Section XI Code Case N-498, dated May 13, 1991, entitled 11Alternative Rules for 10-Year Hydrostatic Pressure Testing Class 1 and 2 Systems,Section XI, Division 1, 11 pursuant to 10 CFR 50.55a{a}(3}.
The proposed subject Code Case is to be applied to Dresden Units 2 and 3 for the remainder of the current ten-year interval of the Inservice Inspection Program that concludes on March 1, 1992.
Code Case N-498 provides alternative rules for the 10-year hydrostatic pressure tests required by the ASME Boiler and Pressure Vessel Code,Section XI, Table IWB-2500-1, Categories B-P, and Table IWC-2500-1, Categories C-H.
If these alternate rules cannot be applied to a Class 1 or 2 system or component, it is the staff's understanding that the normal rules for the 10-year hydrostatic pressure test will be followed.
Although ASME Code Case N-498 is not yet included in Regulatory Guide 1.147, it has been reviewed by the staff and approved for use by Cooper Nuclear Station in a letter dated October 24, 1991. Those findings are applicable to Dresden in that a comparable level of structural integrity of the systems will be maintained by applying the alternate rules. Pursuant to 10 CFR 50.55a(a}(3}(i},
the relief is granted based on the finding that th_e alternative examination discussed above provides an acceptable level of quality and safety.
cc: See next page
- See previous concurrence
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- i12 /9 OFFICIAL RECORD COPY Document Name:
KOVACH M82153/54
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Sincerely,
.Ori9in'41 Signed* Sf.
Richard J. Barrett, Director Project Directorate III-2 Division of Reactor Projects -*III/IV/V Office of Nuclear Reactor Regulation
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- 12/18/91
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January 3, 19~
Docket Nos. 50-237 50-249 Mr. Thomas J. Kovach Nuclear licensing Manager Conunonwealth Edison Company - Suite 300 OPUS
~4es t I II 1400 OPUS Place Downers Grove, Illinois 60515
Dear Mr. Kovach:
DISTRIBUTION Docket Fi le NRC & Local PDRs PDIII-2 r/f ACRS(lO) P-315 E. Jordan MNBB 3701 B. Boger J. Zwolinski R. Barrett C. Moore B. Siege 1 OGC 15B18 CCheng 7D4 Plant File B. Clayton RIII
/
SUBJECT:
RELIEF REQUEST CR-13, REQUEST FOR APPROVAL TO IMPLEMENT PROVISION OF ASME APPROVED CODE CASE N-498 FOR DRESDEN UNITS 2 AND 3 (TAC NOS. M82153 AND M82154)
. By letter dated August 20, 1991, you requested approval for the implementation of the alternative rules of ASME Section XI Code Case N-498, dated May 13, 1991, entitled "Alternative Rules for 10-Year Hydrostatic Pressure Testing
- class 1 and 2 Systems,Section XI, Division 1," pursuarit to 10 CFR 50.55a{a)(3).
The proposed subject Code Case is to b~ applied to Dresden Units 2 ~nd 3 for_
the remainder of the current ten-year interval of the Inservice Inspection
- Pro_gram that concludes on March 1, 1992.
C.ode Case N-498 provides alternative rules for the 10-year hydrostatic pressure tests required by the ASME Boiler and.Pressure Vessel Code,Section XI, Table IWB-2500-1, Categories B-P, and Table IWC-2500-1, Categories C-H.
If these
. alternate rules cannot be applied to a Class 1 or 2 system or component, it is the staff's understanding that the normal rules for the 10-year hydrostatic pressure test.will be followed.
Although ASME Code Case N-498-is not yet included in Regulatory Guide 1.147, it has been reviewed by the staff and approved for use by Cooper Nuclear Stat.ion in a letter dated October 24, 1991. Those findings are applicable to Dresd.en in that a comparable level of structural integrity of the systems will be maintained by applying the alternate rules *. Pursuant to 10 CFR 50.55a(a)(3)(i),
the relief is granted based on the finding that the alternative examination discussed above*provides an acceptable level of quality and safety.
cc: See next p~ge.
- See previous concurrence OFFICIAL RECORD COPY Docu~ent Name:
KOVACH M82153/54 Sincerely, Original 5igned Sy:
Richard J. Barrett, Director Project Directorate Il)-2 Division of Reactor Projects - III/IV/V Office of Nuclear Reactor Regulation
- MYoung
- 12/18/91
ii I
Mr. Thomas J. Kovach Conunonwealth Edison Company cc:
Michael I. Miller, Esq.
Sidley and Austin
. One First National Plaza Chicago,.Illinois 60690 Mr. J. Eenigenburg Plant Superintendent Dresden Nuclear Power Station Rura 1 Route #1
- Morris, Illinois 60450 U. S. Nuclear Regulatory Conunission Resident Inspectors Office Dresden Station Rura 1 Route #1 Morris, Illinois 60450 Chairman Board of Supervisors of Grundy County Grundy Co~nty Courthouse Morris, Illinois 60450 Regional Administrator Nuclear Regulatory Conunission, Region III 799 Roosevelt Road, Bldg. #4 Gl~n Ellyn, Illinois 60137 Illinois Departinent of Nuclear Safety Office of Nuclear Facility Safety 1035 Outer Park Drive Springfield, IlJinois 62704 Robert Neumann Office of Public Counsel
- state of Illinois Center 100 W. Randolph.
Suite 11-300
- Chicago, Illinois 60601 Dresden Nuclear Power Station Unit Nos. 2 and 3