ML20204G366
| ML20204G366 | |
| Person / Time | |
|---|---|
| Site: | Waterford  |
| Issue date: | 04/25/1983 |
| From: | Maurin L LOUISIANA POWER & LIGHT CO. |
| To: | Jay Collins NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, 69, NUDOCS 8305020450 | |
| Download: ML20204G366 (1) | |
Text
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LOUISIANA f 242 OnAnONoe s1 ster POWE R & LiG H T/ P O BOX 6008
- NEW ORLEANS LOUISIANA 70174. (504) 366 2345
$!ONsYSYE S
AprL1 25, 198 Voce Presnient Nuclear Ope a W3I83-0131 Q-3-A35.07.69 Mr. John T. Collins, Regional Administrator, Region IV L
U. S. Nuclear Regulatory Commission f
611 Ryan Plaza Drive, Suite 1000 l
g ggg Arlington, Texas 76012 LO
SUBJECT:
Waterford SES Unit No. 3 Docket No. 50-382 Significant Construction Deficiency No. 69
" Crosby Valve & Gage Company Stellite Alloy #6B Discs" Final Report
REFERENCE:
LP&L letter W3P83-0654 from L. V. Maurin to John T. Collins dated March 1, 1983
Dear Mr. Collins:
In accordance with the requirements of 10CFR50.55(e), we are hereby providing two copies of the Final Report of Significant Construction Deficiency No. 69, " Crosby Valve & Gage Company Stellite Alloy #6B Discs".
I" you have any questions, please advise.
Ver uruly yours, L. V. Maurin phg LVM/ MAL:keh Attachment cc:
1)
Director 3)
Mr. E. L. Blake Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Washington, D. C.
20555 l
(with 15 copies of report)
- 2) Director 4)
Mr. W. M. Stevenson Office of Management Information and Program Control U. S. Nuclear Regulatory Commission Washington, D. C.
20555 (with I copy of report) 0305020450 830425 PDR ADOCK 05000382 S
FINAL REPORT OF SIGNIFICANT CONSTRUCTION DEFICIENCY NO. 69 CROSBY VALVE & GAGE CO. STELLITE ALLOY #6B DISCS INTRODUCTION This report is submitted pursuant to 10CFR50.55(e).
It describes what was thought to be a deficiency in the valve discs used in the Safety Injection and
+
Chemical and Volume Control Systems relief valves.
This problem was considered reportable under the requirements of 10CFR50.55(e).
To the best of our knowledge, this problem has not been identified to the Nuclear Regulatory Commission pursuant to 10CFR21.
DESCRIPTION Two replacement discs were procured from the Crosby Valve & Gage Co. for the valves 2CH-R1526A and 2CH-R1527 A/B. The manufacturer used solid Haynes Stellite Alloy #6B from wrought bar stock to manufacture these discs. An examination of the reports submitted indicated that the material in question failed to meet the ASME requirements. A review of the drawings from the above referenced vendor has determined that the discs for an additional 8 valves (total no. 10) are also made from Solid Stellite 6B.
SAFETY IMPLICATIONS The above mentioned relief valves are installed in safety related systems such as the Safety Injection and the Chemical and Volume Control Systems. The failure of the relief valves to perform correctly could adversely affect the safety of the plant, if left uncorrected.
CORRECTIVE ACTION TAKEN i
After further Engineering evaluation and discussions with the manufacturer, it i
was determined that the Solid Stellite 6B Valve Discs do. meet all of the j
requirements of ASME Code Section III.
Nonconformance Report W3-5572 has been redispositioned to accept the subject material. No further corrective action is required.
This report is being submitted as the final report.
i I
, -,. - - ~
~,
o FINAL REPORT OF SIGNIFICANT CONSTRUCTION DEFICIENCY NO. 69 CROSBY VALVE & GAGE CO. STELLITE ALLOY #6B DISCS INTRODUCTION This report is submitted pursuant to 10CFR50.55(e).
It describes what was
~
thought to be a deficiency in the valve discs used in the Safety Injection and Chemical and Volume Control Systems relief v,alves. This problem was considered reportable under the requirements of 10CFR50.55(e).
To the best of our knowledge, this problem has not been identified to the Nuclear Regulatory Commission pursuant to 10CFR21.
DESCRIPTION Two replacement discs were procured from the Crosby Valve & Gage Co. for the valves 2CH-R1526A and 2CH-R1527 A/B. The manufacturer used solid Haynes Stellite Alloy #6B from wrought bar stock to manufacture these discs. An examination of the reports submitted indicated that the material in question failed to meet the ASME requirements. A review of the drawings from the above referenced vendor has determined that the discs for an additional 8 valves (total no. 10) are also made from Solid Stellite 6B.
SAFETY IMPLICATIONS The above mentioned relief valves are installed in safety related systems such as the Safety Injection and the Chemical and Volume Control Systems. The failure of the relief valves to perform correctly could adversely affect the safety of the plant, if left uncorrected.
CORRECTIVE ACTION TAKEN After further Engineering evaluation and discussions with the manufacturer, it was determined that the Solid Stellite 6B Valve Discs do meet all of the requirements of ASME Code Section III.
Nonconformance Report W3-5572 has been redispositioned to accept the subject
. material. No further corrective action is required.
This report is being submitted as the final report.
l
'