ML18018B896

Forwards Elimination of Arbitrary Intermediate Break Points in Main Feedwater Sys, Justifying Alternate to SRP 3.6.2 (Meb 3-1) Guidelines Re Postulated Arbitrary Intermediate Pipe Breaks.Review & Approval by Mar 1985 Requested

ML18018B896
Person / Time
Site:	Harris
Issue date:	02/13/1985
From:	Cutter A CAROLINA POWER & LIGHT CO.
To:	Harold Denton Office of Nuclear Reactor Regulation
Shared Package
ML18018B897	List: ML18018B896 ML18018B898
References
NLS-85-028, NLS-85-28, NUDOCS 8502200159
Download: ML18018B896 (6)

Text

REGULAT Y INFORMATION DISTRIBUTIO YSTEM (RIDS)ACCESSION NBRs8502200159 DOC~DATE: 85/02/13 NOTARIZED; NO FACIL:50 400 Shearon Harris Nuclear Power Planti Unit 1<Carolina AUTH BYNAME AUTHOR AFFILIATION CUTTEREA,BB Carolina Power 8 Light Co, RECIP,NAME RECIPIENT AFFILIATION DENTONEH.Rs Office of Nuclear Reactor"Regulationg Director DOCKET¹05000400

SUBJECT:

Forwards"Elimination of Arbitrary Intermediate Break Points in'ain Feedwater" Sysi" Justifying alternate to SRP 3;6~2 (MEB, 3"1)guidelines re postulated arbitrary intermediate pipe br eaks.Review 5 approval by Mar 1985 r equested, DISTRIBUTION CODE: B001D COPIES RECEIVED:LTR 3 ERCL g.SIZE: TITLE!Licensing Submittal:

PSAR/FSAR Amdts 8, Related Cor respondenceI NOTES;RECIPIENT ID CODE/NAME NRR/DL/ADL NRR LB3 LA INTERNAL: ACRS 41 ELD/HDS1 IE/DEPER/EPB 36 NRR ROEEM~L NRR/DE/CEO 11 NRR/DE/EQB 13 NRR/DE/MEB 18 NRR/DE/SAB 24 iVRR/DHFS/HFEB40 NRR/DHFS/PSRB NRR/DSI/AEB 26 NRR/DSI/CPB 10 NRR/DSI/ICSB 16 NRR/DSI/PSB 19.NRA/DS I/RSB 23 RGN2 EXTERNAL: BNL (AMDTS ONlY)LPDR 03 NSIC 05 COPIES LTTR ENCL 1 0 0 6 6 1 0 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 3 3 1 1 1 1 1 1 RECIPIENT ID CODE/NAME NRR LB3 BC BUCKI EYiB 01 ADM/LFMB IE, FILE IE/DQAS IP/QAB21 NRR/DE/AEAB NRR/DE/EHEB NRR/OE/GB 28 NRR/DE/MTEB 17 NRR/DE/SGEB 25 NRR/DHFS/LQB 32 NRR/DL/SSPB NRR/DS I/AS 8 NRR/DS I/CSB 09 NRR/OSI/METB 12 NRR/DSI/RAB 22'lkXZfks RM/DOAMI/MI 8 DMB/DSS (AMDTS)NRC PDR'02 PNL GRUELER COPIES LTTR ENCL 1 0 1 1 1 0.1 1 1 1'0.1 1 2 4 1 1 1 1.1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 0 TOTAL NUMBER OF COPIES REQUIRED: LTTR'51 ENCL 43 f'~I jk ,0 r 1ll"~n lt I'1")F't I)~1 ll'r'tlll F'j'jFV'f w ljj VV,l l I'a'j hl'l Ir Vl'$(I)I f II'llr I I r (j~1 a I ll>>n 1,~W t f vry'nnl ,I I fr I I<<II'VI'I jl'l n II A II'X API I jf',Ijj IVII fl I g~l li i ,)In'"II j Ila R ji g\I, II II, I h I,l N F)g lf I,'l1',,';IVI jf I'n fl f, jt n ll')5 rj b I Carolina Power&Light Company FEB 1 3 Jg8)SERIAL: NLS-85-028 Mr.Harold R.Denton, Director Office of Nuclear Reactor Regulation United States Nuclear Regulatory Commission Washington, DC 20555 SHEARON HARRIS NUCLEAR POWER PLANT UNIT NO.1-DOCKET N00 50-400 ELIMINATION OF POSTULATED ARBITRARY INTERMEDIATE BREAKS IN THE MAIN FEEDWATER SYSTEM

REFERENCE:

(1)Letter dated November 30, 1984.S.R.Zimmerman to H.R.Denton.

Subject:

"Elimination of Postulated Arbitrary Intermediate Pipe Breaks in Class 1, 2, and 3 Pipes." (2)U.S.Nuclear Regulatory Commission."Catawba Nuclear Station Unit 2 Safety Evaluation for the Elimination of Arbitrary Intermediate Pipe Breaks." March 1984.

Dear Mr.Denton:

Carolina Power&Light Company requests Nuclear Regulatory Commission approval for the use of an alternate approach to the existing guidelines in Standard Review Plan 3.6.2 (MEB 3-1)regarding the postulation of arbitrary intermediate pipe breaks.We informed the NRC in Reference 1 of the ongoing work for the elimination of postulated arbitrary intermediate pipe breaks.The enclosure to this letter presents the technical basis for the elimination of the breaks.Based on our review, we conclude that an adequate level of safety exists to justify the proposed deviation.

This conclusion is c'onsistent with the consensus in the nuclear industry and with the NRC conclusions presented in Reference 2.I 8502200159 8502i3 PDR ADOCK 05000400 I'DR~o(<t 411 Fayetteville Street~P.O.Box 1551 o Raleigh, N.C.27602

~%

~Mr.H.R.Denton We request the NRC to review and approve this request by March 1985.We are available to meet with the Staff to resolve any questions and provide any necessary information.

If you have any questions, please contact Mr.Pedro Salas at (919)836-8015.Yours very ly, PS/mf (1083PSA)A.B.Cutter-Vice resident Nuclear Engineering

&Licensing

Enclosure:

Elimination of Arbitrary Intermediate Break Points in the Main Feedwater System Cce Mr.R.J.Bosnak (NRC-NRR/DE)

Mr.H.L.Brammer (NRC-NRR/DE)

Mr.B.C.Buckley (NRC)Mr.G.F.Maxwell (NRC-SHNPP)

Mr.J.P.O'Reilly (NRC-RII)Mr.Travis Payne (KUDZU)Mr.Daniel F.Read (CHANGE/ELP)

Chapel Hill Public Library Wake County Public Library Mr.Wells Eddleman Mr.John D.Runkle Dr.Richard D.Wilson Mr.G.0.Bright (ASLB)Dr.J.H.Carpenter (ASLB)Mr.J.L.Kelley (ASLB) 1 1 t'