ML18031A273
| ML18031A273 | |
| Person / Time | |
|---|---|
| Site: | Susquehanna  |
| Issue date: | 09/26/1979 |
| From: | Curtis N PENNSYLVANIA POWER & LIGHT CO. |
| To: | |
| References | |
| 840-4, NUDOCS 7910030462 | |
| Download: ML18031A273 (3) | |
Text
REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)
ACCESSION NBR: 7910030462 DOC. DATE: 79/09/26 NOTARIZED:
NO FACIL: 50-387 Susquehanna Steam Electric Stationi Unit ii Pennsylva 50-388 Susquehanna Steam Electric StationI Unit 2I Pennsylva AUTH. NAME AUTHOR AFFILIATION CURT ISI N. W.
Pennsylvania Pottter h Light Co.
REC IP. NAME RECIPIENT AFFILIATION DOCKET 0 05000387 OSO~
SUBJECT:
Submits update to 790302 interim deficiency rept re failure of-valve manufacturers to stake stem lock nuts fastening Limitorque Model SMB 8:
SMC motor operators to valves. Ongoing insp has identified 658 suspect valves. Final rept by 790415.
DISTRIBUTION CODE:
BOIBS COPIES RECEIVED: LTR Q ENCL CI SIZE:
TITLE: Construction Deficiency Report (10CFR50. 55E)
NOTES: SE~b Z ~
WS'R'EC IP IENT CQP IES ID CODE/NAME LTTR EN ACTION:
14 PM fn/~~4 1
20 LA L4CJ+% Q 1
RECIPIENT ID CODE/NAME 15 BC LLdg+~
21 AD LCD+
COPIES LTTR EN 1
1 u w H/AC 4 6 gn)c~
INTERNAL:
REG L
05 I E~E 08 MPA 10 -GAB 12 JORDAN, E/IE 16 AD FOR ENGR 17 AD REAC SFTY 23 OELD DIRECTOR DSE IGC SYS BR MECH ENG BR S
HAM*VER 1
2 1
1 1
1 1
1 1
1 02 NRC PDR 07 EDQ 8c STAFF 09 DEPY DIR DPM 11 STANDRDS DEV 13FIELD COOR/IE 17 AD PLANT SYS 22 DIR DPM AD/SITE TECH GEOSC IENCES BR M*TL ENG BR POWER SYS BR STRUCT ENG BR EXTERNAL: 03 LPDR 24 ACRS 1
16 16 04 NSIC c(C rtl-At Mt,(MPt=p gc I fltD Tt=g pl=AltTaFn, I, TTQ....,,M,,CMt;L
TWO NORTH NLNTH STREET, ALLENTOWN, PA.
18101 PHONE (215) 821-5'151 NORMAN W. CURTIS Vice President-Engineering 8 Construction 821-5381 September 26, 1979 Mr. Boyce H. Grier Director, Region I U. S. Nuclear Regulatory Commission 621 Park Avenue King of Prussia, Pennsylvania 18406 SUSQUEHANNA STEAM ELECTRIC STATION UPDATED STATUS OF A REPORT OF A DEFICIENCY ZN THE INSTALLATIONOF LZMZTORQUE MOTOR OPERATORS ON VALVES ERs 100450/100508 FILE 840-4 PLA-403
Dear Mr. Grier:
This serves as an update to our interim report zegarding the failure of valve manufacturers to stake the stem lock nuts fastening Limitorque Model No.
SMB and SMC motor operators to valves.
The deficiency was initially reported under the provisions of 10 CFR 50.55(e) by PPaL letter PLA-329, dated March 2r 1979r which advised. that the Commission would be further advised of PPGL's corrective action and.a date for completion thereof.
To date it has been determined that this defici.ency pertains only to risi.ng stem type valves and a total of 658 valves have been identified within=the Bechtel scope of supply as being suspect with regard to unstaked stem lock nuts.
In addition, Bechtel has been requested to identi.fy, inspect and correct the valves within the G.E. scope of supply wh'ch are similarly affected.
Field personnel are in the process of inspecting all valves which are presently suspect and Bechtel construction forces are staking all ncnconforming lock nuts.
. Appzoximately 40% of the valves inspected so far have required corrective action.
The inspection and correction effort is continuing and is expected to be completed in the spring of 1980.
Zt is anticipated that the final report on this deficiency will be issued by April 15, 1980.
Very truly yours, N
W. Curtis Vice President-Engineering 6 Construction 7 8 1 0 G = O&< rLo<~
PENNSYLVANIA POWER IL LIGHT COMPANY
Mr. Boyce H. Grier September 26, 1979 ARS:mcb
'c:
Mr. Robert M. Gallo U. S. Nuclear Regulatory Commission PE O. Box 52 Shfckshinny, Pennsylvania 18655 Mr. G. McDonald Office of Management Information & Program Contxol U. S. Nuclear 'Regulatory Commission Washington, D.C.
20555 Mr. Victor Stello (15)
Director Office of Inspection a Enforcement U. S. Nuclear Regulatory Conanission Washington, D.C.
20555