ML20039B344
| ML20039B344 | |
| Person / Time | |
|---|---|
| Issue date: | 11/30/1981 |
| From: | Potapovs U, Sutton J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | |
| Shared Package | |
| ML20039B167 | List: |
| References | |
| REF-QA-99900289 NUDOCS 8112220557 | |
| Download: ML20039B344 (10) | |
Text
.
ORGANIZATION:
NUCLEAR VALVE D1 VISION, BORG WARNER CORPORAT10N VAfi NUYS, CALIFORNZA REPORT NO.: 99900289/81-02 INSPECTION DATE(S): 10/5-9/81 INSPECTION ON-SITE HOURS: 28 CORRESPONDENCE ADDRESS: Nuclear Valve Division Borg Warner Corporation ATTN: Mr. A. L. Dubrow 7500 Tyrone Ave.
Van Nuys, Calif.ornia 91409 ORGANIZATION CONTACT:
Mr. W. Wheaton, QA Director TELEPHONE:
(213) 781-4000 PRINCIPAL PRODUCT:
Nuclear Valves - 2" to 24" NUCLEAR INDUSTRY ACTIVITY: Commercial nuclear production of the Nuclear Valve Division of Borg Warner Corporation totals 70% of the total company production, r\\
b hCd-
//~2J cM ASSIGNED INSPECTOR:
JU. SutTon, Reactor Engineer Date Components Section (CS)
OTHER INSPECTOR (S):
l __
I APPROVED BY:
, c/ m]r;Lpp (1 -3C-9 l U.Potapovs,ActingSection$hief,CS Date INSPECTION BASES AND SCOPE:
A.
BASES:
10 CFR Part 50, Appendix B; 10 CFR Part 21; and applicable codes and i
standards.
B.
SCOPE:
Previous inspection findings, Part 21 inspection, welding, review of vendor's activities and review of vendor's action on a reported 10 CFR Part 50.55(e) notification from Duke Power Company pertaining to a binding 8" gate valve problem at Catawba 1-2 plants.
DESIONATED ORIGINAL r utified By J
wsm m aans l
99/00289
ORGANIZATION: NUCLEAR VALVE DIVISION, BORG WARNER CORPORATION VAN NUYS, CALIFORNIA REPORT NO.: 99900289/81-02 INSPECTION RESUL.TS:
PAGE 2 of 4 A.
VIOLATIONS:
None B.
NONCONFORMANCES:
1.
Contrary to Criterion V of Appendix B to 10 CFR Part 50 and paragraph 9.8 " Welding" in Section 9, Revision L of the Nuclear Valve Division QA Manual, a welder was observed not maintaining the approved welding procedures electrical characteristics during a hardfacing operation on Valve No. S012579-3.
2.
Contrary to Criterion V of Appendix B to 10 CFR Part 50 and paragraph 15.7 of Section 15, Revision L of NVD's OA Manual and Nuclear Practice Bulletin No.11-8, Revision 8, a special review board was not convened as required, to review the reported deviation involv ng 8" gate valves i
as reported on a Part 50.55(e) report by Duke Power Company.
C.
UNRESOLVED ITEMS:
None D.
STATUS OF PREVIOUS INSPECTION FINDINGS:
1.
(0 pen) Potential Construction Deficiency Report (Report No. 80-03, D):
The inspector reviewed the corrective action taken by NVD to resolve this problem. All items have been reviewed by NVD and the customer.
Action is being taken to finalize the corrective action to be taken within the next 2 months. A final review will be made during the next scheduled inspection.
2.
Follow-up Item No. 1 (Closed): NVD Statement of Authority and Policy (81-01):
The inspector reviewed the revised NVD's Statement of Authority and Policy issued April 1, 1981. The statement indicates that the QA Manual meets Part 50, Arpendix B requirements for noncode items.
3.
Follow-up Item No. 2 (Closed):
QA Direct *s Reporting Channel (81-01):
The inspector reviewed Revision L to NVD's OA Manual issued April 1, 1981. The revision now indicates the current reporting channel for use by the Director of QA to management.
E.
OTHER FINDINGS OR COMMENTS:
1.
Implementation of 10 CFR Part 21:
During the review of the corrective action taken by NVD to resolve the binding problem on 8" gate valves as reported by Duke Power Corporation as a Part 50.55(e) report, the inspec-tor noted that a Special Review Board had not been convened to determine
)
ORGANIZATION:
NUCLEAR VALVE D1VIS10N, BORG WARNER CORPORATION VAN NUYS, CALIFORNIA REPORT NO.: 99900280/81-02 INSPECTION RESULTS:
PAGE 3 of 4 the reportability of a defect to NRC under Part 21 requirements.
Section 15 of the QA Manual and NVD's Nuclear Practice Bulletin No.11-8 have detailed procedures that cover this area of reportability.
One nonconformance was identified (See paragraph B.2).
2.
Welding: The inspector reviewed NVD's QA Manual Section 9.8 to determine if a system exists to control the welding operations performed during the manufacturing process.
The inspector reviewed 3 welding procedures, welding controls, welder certifications and controls of materials to determine if the system was being implemented.
During the examination of a valve hardfacing operation it was noted that the welder was performing the operation outside of the designated electrical parameters.
Welding Procedure NPS 70046 Revision X indicated a current range for 1/8 rod between 70-100 amps.
Contrary to this range the welder was performing the operation at 140 amps.
The hardfacing operation was suspended to resolve this problem.
One nonconformance was identified (See paragraph B.1.).
3.
10 CFR Part 50.55(e) Report: A 10 CFR Part 50.55(e) construction deficiency report (CDR) notification was made by Duke Power Corporation to NRC on July 1, 1981, pertaining to 2-8" gate valves used for isolating essential from nonessential loads. The valves were found to be inoperable in a component system at Catawba 1-2 units.
NVD assigned a project engineer to determine the cause of the failure.
One valve was returned to NVD for examination. A test procedure was generated and tests were performed on the valve during July and August.
NVD determined that the valve in question and similar valves that had been manufactured by NVD prior to January 1979 had sharp edges on the gate guide surfaces and if positioned between 2250 and 157h of vertical could fail to open or close.
A search of NVD records for all gate valves manufactured prior to January 1979 in sizes 6, 8, 10, 12, 18 and 20 inches was conducted to determine which valves could be suspect as having this defect.
In addition a review of customers who had ordered gate valves in these sizes was also conducted. The search identified 109 gate valves of varying sizes which could be suspect as having the identified defect.
Eight customers were identified as having ordered gate valves of varying sizes.
A letter was prepared for the affected customers outlining steps to be taken by them to determine if any valves had been installed in a safety 0
U system and positioned between 22h and 157h of vertical.
The customers were requested to transmit all information concerning use and operations of the valves to NVD as soon as possible.
I
. ORGANIZATION:
NUCLEAR VALVE D1 VISION, BORG WARNER CORPORAT10N VAN NUYS, CAllFORNIA REPORT NO.: 99900289/81-02 INSPECTION RESULTS:
PAGE 3 nf 4 It was also determined by NVD that there were no operating nuclear plants identified as having questionable valves installed in Safety Systems.
A Part 21 natification was submitted to Region V on October 13, 1981, detailing the conditions found and corrective action to be taken for those gate valves identified by customers and installed in safety-related systems and positioned as described in the customers letter.
Follow-up by Region V will continue. One nonconformance was identified.
(see paragraph B.2)
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