W3P83-0654, First Interim Significant Const Deficiency Rept 69 Re Crosby Valve & Gage Co Stellite Alloy 6B Discs.Discs Will Be Replaced W/Certified Matl.Next Rept Will Be Submitted by 830510
| ML20071C870 | |
| Person / Time | |
|---|---|
| Site: | Waterford  |
| Issue date: | 03/01/1983 |
| 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, W3P83-0654, W3P83-654, NUDOCS 8303080195 | |
| Download: ML20071C870 (2) | |
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- NEW ORLEANS. LOUISIANA 70174 * (504) 366-2345 MIDDLE Sou!H UiluTIES SYSTEM March 1, 1983 t,y. u g ua,u Vice President Nuclear Operations W3P83-0654 3-A1.01.04 Mr. John T. Collins, Regional Administrator, Region IV U. S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76012
SUBJECT:
Waterford SES Unit No. 3 Docket No. 50-382 Significant Construction Deficiency No. 69
" Crosby Valve & Gage Co. Stellite Alloy
- 6B Discs" First Interim Report
Reference:
Telecon between M. A. Livesay (LP&L) and W. A. Crossman (NRC) on January 28, 1983
Dear Mr. Collina:
In accordance with 10CFR50.55(e), attached are two copies of the interim response to Significant Construction Deficiency No. 69.
This item was previously identified as PRD # 100.
Very truly yours, i
hM L. V. Maurin LVM/ MAL /ssd ec: 1) Director i
Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Washington, D.C.
20555
- 2) Director i
Office of Management Information and Program Control U. S. Nuclear Regulatory Commission l
Washington, D.C.
20555 3)
E. Blake r
Y
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W. Stevenson l
t 8303080195 830301 PDR ADOCK 05000382 g
.s INTERIM REPORT OF SICNIFICANT CONSTRUCTION DEFICIENCY NO. 69 CROSBY VALVE & CAGE CO. STELLITE ALLOY #6B DISCS INTRODUCTION This report is submitted pursuant to 10CFR50.55(e).
It describes a deficiency in the valve discs used in the Safety Injection and Chemical and Volume Control Systems relief valves. This problem is considered rcportable~under the require-ments 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 & Cage Co. for the valves 2CH-RI526A and 2CH-R1527 A/B. The manufacturer used solid Haynes Stellite Alloy #6B from wrought bar stock to manufacture these discs. An exam-ination of the reports submitted indicated that the material in question failed to meet the ASME requirements. The vendor's drawings were reviewed and it was discovered that the discs for an additional 8 valves (total no. 10) were 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 ahd Volume Control Systems. Failure of the discs would allow uncontrolled discharge of the fluid at pressures lower than the design set point. This condition is considered significant and could adversely affect the safety of the plant if left uncorrected.
CORRECTIVE ACTION Nonconformance Report W3-5572 was initiated to track and document corrective action. The Solid Stellite 6B valve discs will be replaced with certified material which meets ASME code requirements. All removed Solid Stellite 6B valve discs will be tagged and returned to Ebasco's Site Warehouse for further disposition.
i Further information concerning the progress of the corrective action will be submitted by May 10, 1983.
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INTERIM REPORT OF SIGNIFICANT CONSTRUCTION DEFICIENCY No. 69 CROSBY VALVE & GAGE CO. STELLITE ALLOY #6B DISCS j
INTRODUCTION This report is submitted pursuant to 10CFR50.55(e). lit describes a deficiency in the valve discs used in the Safety Injection and Chemical and Volume Control Systems relief valves. This problem is considered reportable'under the require-ments 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 & Cage Co. for the valves 2CH-RI526A and 2CH-R1527 A/B. The manufacturer used solid Haynes Stellite Alloy #6B from wrought bar stock to manufacture these discs. An exam-ination of the reports submitted indicated that the material in question failed to meet the ASME requirements. The vendor's drawings were reviewed and it was discovered that the discs for an additional 8 valves (total no. 10) were also made from Solid Stellite 6B.
i SAFETY IMPLICATIONS The above mentioned relief valves are inst,alled in safety related systems such as.the Safety Injection and the Chemical and Volume Control Systems. Failure of.the discs would allor uncontrolled discharge of the fluid at pressures lower than the design set point. This condition is considered significant and could l
adversely affect'the safety of the plant if left uncorrected..
CORRECTIVE ACTION 4
l Nonconformance Report W3-5572 was initiated to track and document corrective l
action. The Solid Stellite 6B valve discs will be replaced with certified material which meets ASME code requirements. All removed Solid Stellite 6B i
i
. valve discs will be tagged and returned to Ebasco's Site Warehouse for further j
disposition.
I Further information concerning the progress of the corrective action will be submitted by May 10, 1983.
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