ML17037B867
| ML17037B867 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 02/21/1978 |
| From: | Rhode G Niagara Mohawk Power Corp |
| To: | Robert Carlson NRC Region 1 |
| References | |
| Download: ML17037B867 (8) | |
Text
REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS>
DISTRIBUTION FOR INCOMING MATERIAL 50-4i0 REC'ARLSON R T NRC ORG:
RHODE 6 K
NIAGARA MOHAWK PWR DOCDATE: 02/Rl/78 DATE RCVD: 02/27/78 DOCTYPE:
LETTER NOTARIZED:
NO COPIES RECEIVED
SUBJECT:
LTR l ENCL FORWARDING FINAL CQNSLUCSIONS DESCRIBING POSSIBLE BREAKDOWN IN THE GRAVER TANK 5 MANUFACTURING CO"S.
SHOP QUALITY ASSURANCE PROGRAM... WITH CORRECTIVE ACTIONS.
PLANT NAME: NINE MILE POINT UNIT 2 REVIEWER INITIAL'.
XJM DISTRIBUTOR INITIAL:
DISTRIBUTION OF THIS MATERIAL IS AS'OLLOWS CONSTRUCTION DEFICIENCY REPORT (iOCFR50. 55(E>.
(DISTRIBUTION CODE 8004)
FOR ACTIQN:
INTERNAL:
FXTERNAL:
ASST DIR VASSALLO~~+LTR ONLY PROJ MGR KANE++LTR ONLY
~~W/ENC 0
GOSSICK
- 8. STAFF++LTR ONLY BOYD++LTR ONLY HELTEMES+4~W/ENCL KNIGHT+kLTR ONLY TEDESCO+'~LTR ONLY STANDARDS DEV. 4F+I)/ENCL LPDR S OSWEGO(
NY+4~W/ENCL TIC+~~W/ENCL NS IC+>W/ENCL ACRS CAT B~+W/i6 LTRS BR CHIEF VARGA4s<LTR ONLY.
LIC ASST SERVICE>>LTR ONLY NRC PDR4~+W/ENCL OELD++LTR ONLY MIPC++W/ENCL DEYOUNG++W/ENCL R.
MATTSON+~LTR ONLY ROSS++LTR ONLY EISENHUT+4LTR ONLY K SEYFRIT/IE44W/ENCL DISTRIBUTION:
LTR 40 ENCL 28 SIZE:
iP+2P THE END CQNTRQI NBR:
780580057
I I'
V NIAGARA U MQHAWK NIAGARAMOHAWKPOWER CORPORATION/300 ERIE BOULEVARDWEST, SYRACUSE, N.Y. 13202/TELEPHONE (315) 474-1511 February 21, 1978 Office of Inspection and Enforcement Region I Attention:
Mr. R. T. Garison,'hief Reactor Construction and Engineering Support Branch U.
S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, Pennsylvania 19406 Re:
Nine Mile Point Unit 2 Docket No. 50-410
Dear Mr. Carlson:
On January 20, 1978, your staff was advised of a possible breakdown in the Graver Tank & Manufacturing Company's shop Quality Assurance Program.
This condition involved shop fabrication of electrical penetrations for Nine Nile Point Unit 2.
Based on the further investigation and evaluation of this matter, Stone and Webster and Niagara Mohawk Power Corporation determined that the deficiency did not warrant being reported.
The final report which describes these conclusions in accordance with Section 50.55(e) of the Commission's regulations. is attached.
Very truly yours, NIAGARA MOHAWK POWER CORPORATION
/
Geiald K. Rhode, Vice President System Pro ect Management PEF/szd
. 780580057 Attachment Xc: v(4r. Ernat Volgenau Inspection
& Enforcement Branch U.
S. Nuclear Regulatory Commission Washington, D.
C.
20555 9',(
a
I.
DESCRIPTION OF DEFICIENCY During a shop inspection of Graver Tank and Manufacturing Company's East Chicago,.Indiana facility, the final docu-mentation package for ten electrical penetrations was presented'to
'the Stone 6c Webster Procurement Quality Control Inspector for review..
This documentation indicated that all required fabrication work, inspections, and tests had been. performed on the penetrations, and they were ready to be released for shipment.
Upon proceeding to the work area for a.visual inspection of the penetrations, the inspector discovered that shop personnel. were still welding on two of -the penetrations.
This in conjunction with the fact that 23 unsatisfactory findings in inspections by our architect engineer, Stone
& Webster, of Graver Tank during a long, period of time, led to reporting this condition under 50.55(e) as. a significant breakdown, in. Graver Tank and Manufacturing Company's Quality Assurance Program.
II.
ANALYSIS OF SAFETY'MPLICATIONS Investigation of this deficiency revealed that the work being done on the two penetrations was repair work as the result of an extra Halogen Test..
This test was performed. because Graver determined that the particular welds which are normally tested in the field would be inaccessible at that time if repairs were necessary.
Therefore, the welds for all ten penetrations were Halogen tested and two were found to require repair.
A traveler was. initiated for the repair work which shows that it was performed under the control of the shop Quality Assurance Program.
- However, Graver failed to remove the two penetrations from the list of items being presented to the. inspector'or final inspection.
A review of the remaining 22 unsatisfactory findings reveals that they were the result of routine shop inspections over a long period of time.
Since a shop inspection program is expected to discover and correct unsatisfactory findings, these findings are not indicative of a significant breakdown in Graver's Quality Assurance Program.
These items. have been satisfactorily resolved, and the last eleven shop inspections at Graver have resulted. in no unsatisfactory findings.
Since these items.had passed normal. shop requirements, and had. a traveler for the additional repair work, this condition did not have any adverse safety effects.
~4
III. CORRECTIVE ACTION On January 21,
- 1978, a meeting was held't Graver Tank Manufacturing Company's East Chicago, Indiana, facility to review. and discuss the problems which lead to reporting a potential 10CFR50.55(e) deficiency.,
'In'ttendance were. Graver management personnel~"lStone
& Webster Procurement Quality Control management, and a Niagara Mohawk. Power Corporation Quality Assurance representative.
As a. result of this meeting, the following corrective action has been taken:
1)
Graver has instituted'the practice of 100% final inspection prior. to submittal to Stone 6 Webster Procurement Quality Control for shipment.
2)
Graver has set aside an area in the shop as the final inspection area.
If feasible, material will not be presented for final inspection until it is moved to this area.
3)
An additional person will be employed by Graver, whose function will be to review all documentation for correctness and completeness prior to sub-mittal to Stone
& Webster Procurement Quality Control.
4)
Graver will institute a Quality Assurance function of continuously monitoring shop work and procedure adherence.
5)
Stone 6 Webster and Graver will institute an interface procedure for handling and controlling the Shop Inspection Discrepancy Reports.
In addition to the above, Stone 6 Webster will increase coverage of Graver shop work by a resi'dent Procurement Quality Control Shop Inspector.
Stone 6 Webster. and Niagara Mohawk Power Corporation. will be advised periodically on the progress and effectivenss of Graver Quality Assurance shop activities.'
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