ML18031A333
| ML18031A333 | |
| Person / Time | |
|---|---|
| Site: | Susquehanna  |
| Issue date: | 12/17/1979 |
| From: | Curtis N PENNSYLVANIA POWER & LIGHT CO. |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML18031A334 | List: |
| References | |
| NUDOCS 7912270298 | |
| Download: ML18031A333 (3) | |
Text
HKGULATURY INFORMATION DISTRIBUTION SYSTEM (RIDS)
ACCESSION NBR:7912270298 DOC ~ DATE! 79/12/17 NOTARIZED! NO DOCKET FACIL:5 Susquehanna Steam Electric Stationz Omit 1i Pennsylva 05000387 0
388 usquehanna Steam Electric Station~
Unit 2~ Pennsylva 05000388 AUTH'UTHOR AFFILIATION C U R T I S P I'f ~ i'< ~
Pennsylvania Power 8 Light Co.
REC IP ~ NAME RKG IPIENT AFFILIATION GHIEHE 8 ~ H ~
Region li Philadelphia~
Office of the Director SUUJECT:
For war ds final deficiency rept re insulation damage to wiring in control r oom inserts 72C It 73C which are part of oftsite standby diesel generator contro.ls,GE evaluation encl.
DISTRIBUTION CODE:
BOI9B COPIES RECEIVED:LTR I ENCL. t SIZEmg~g T I TLE! Const r uc t i on De f i c i ency Repoi t (10GFR50,55E)
NOTES: ~gpss ~/~~+
RECIPIENT COPIES REC IP IEN T COPIES ID CODE/NAHt LTTR ENCL ID CODE/NAME LI'TH ENCL ACTION:
14 PM fYLltvEtt 1
1 15 BG Lmg 4s+
1 1
20 LA L.upa&g 1
1 21 AD I
1 1
INTEHNAL:
1 RKG FILE 0
08 MPA 10 QAB 12 JORDAN'/IE 16 AO FOR ENGR 17 'AD HKAG SfTY 23 OELD OLHKCTUR DSE ICC SYS BH MECH KNG BH S
HAI4AUER 1
1 2
2 1
1 1
1 1
1 1
1 1
1 1
1 1i 1
1 02 NRC PDR-07 EOO 8
STAFF 09 DEPY DIR Of M 11 STANDRDS DEV 13F IELD COOH/IE 17 AD PLANT SYS 22 DIH DPM AD/SITE TECH GEOSC IENCKS BR MATI ENG BR POwER SYS BR STHUCT KNG UH 1
'1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
EXTKHNAL: 03 LPOR 24 AGRS 1
1 04 NSIC 16 16 1
1 LIVED MoaRE FPB~o-E~
P.
J KEC.Q FP6~~
TOTAL iNUHdER Of COPIES HEQUIHKO: LTTR ENCL 47
TWO NORTH NINTH STREET, ALLENTOWN, PA.
18101 PHONE:
(215) 821-5151 NORMAN W. CURTIS Vice President.Enyneenng
& Construction 821-5381 December 17, 1979 Mz. Boyce H. Grier Director, Region Z
U. S. Nuclear Regulatory Commission 631 Park Avenue King of Pzussia, Pennsylvania 19406 SUSQUEHANNA ST~
ELECTRZC STATZON FZNAL REPORT OF ZNSULATZON DAMAGE TO WZRZNG ZN CONTROL ROOM ZNSERTS 72C and 73C ERs 100450/100508 FZLE 840-4 PLA-433 Dear Mr. Griers This serves to infozm the Commission of a condition which relates to insulation damage to wiring in Control Room Znserts 72C and 73C which are part of the Plant Operating Benchboard OC653 (GE H12-P853) used in the offsite power system and standby diesel generator circuit breakez controls.
The condition, along with its safety implications and the corrective action taken are summarized in Attachment 1 to this letter.
The condition was initially evaluated by our NSSS supplier, General Electric, and determined by GE to be not reportable (Ref. Attachment
- 2) under 10 CFR Part 21.
- However, based upon subsequent evaluations by PPaL's architect engineer,
- Bechtel, and PPSL's Nuclear Plant Engineering staff, PPII'L has concluded that the condition should be reported undez the provisions of 10 CFR 50.55(e).
As noted in Attachment 1, the subject inserts were returned to GE-San Jose, the manufacturer, where they were completely rebuilt to correct the deficient condition.
Following remanufacturing, the inserts were returned to the SSES site where deficiencies, other than those which lead to the dismantling and rebuilding of the 72C and 73C insezts, were discovered.
The new deficiencies were evaluated by General Electric and repozted by GE under the terms of 10 CFR Part 21 and were subsequently evaluated and reported in PPGL letter PLA-425, dated November 28, 1979 under the provisions of 10 CFR 50.55(e).
PENNSYLVANIA POWER 8
LIGHT COMPANY
<<0'Po Bo//
s6 wow
Mr. Boyce H. Grier December 17, 1979 PP&L's evaluation of the subject deficient condition was protracted because of its conflicting viewpoint with that of General Electric's.
This report therefore concerns conditions which occurred chronologically before the condition which was reported earlier in PLA-425, dated November 28, 1979.
Also, since the details of this report provide information relevant to the reporting recyirements of 10 CFR Part 21, this correspondence is considered to also discharge any formal responsibility PP&L may have for reporting in compliance thereto.
Very truly yours, N.
W. Curtis Vice President-Engineering
& Construction Attachments ARS:mcb cc:
Mr. Robert M. Gallo U. S. Nuclear Regulatory Commission P.O.
Box 52 Shickshinny, Pennsylvania 18655 (15)
Mr. Victor Stello Director Office of Inspection
& Enforcement U. S. Nuclear Regulatory Ccmmission Washington, D.C.
20555 Mr. G. McDonald Office of Management Information
& Program Control U. S. Nuclear Regulatory Commission Washington, D.C.
20555