ML20213G145
| ML20213G145 | |
| Person / Time | |
|---|---|
| Issue date: | 04/30/1987 |
| From: | Naidu K, Stone J Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20213G131 | List: |
| References | |
| REF-QA-99901043 99901043-87-01, 99901043-87-1, NUDOCS 8705180141 | |
| Download: ML20213G145 (3) | |
Text
'.
ORGANIZATION:
WESTINGHOUSE ELECTRIC CORPORATION MONROEVILLE, PENNSYLVANIA REPORT INSPECTION NO.: 99901043/87-01 DATES: 03/27/87 INSPECTION ON-SITE HOURS-6 CORRESPONDENCE ADDRESS: Westinghouse Electric Corporation Nuclear Services Integration Divison ATTN:
Mr. T. Christopher General Manager ORGANIZATIONAL CONTACT: Monroeville, Pennsylvania 15230 TELEPHONE NUMBER:
Mr. J. Jalovich 412-374-3470 NUCLEAR INDUSTRY ACTIVITY:
as Reactor Trip Breakers and dedicating commercial grade co class IE components.
ASSIGNED INSPECTOR:
_K. R. Naidu, Program Development and Reactive 2
lj r
(4 Inspection Section (PDRIS)
Date OTHEr. INSPECTOR (S):
[
APPROVED BY: _
fA Da[te/4/ 3o J. Cp Stone, Chief, PDRIS, Vendor Inspection Branch INSPECTION BASES AND SCOPE:
A.
BASES:
10 CFR Part 21, Appendix B to 10 CFR 50.
B.
SCOPE:
Witness tests performed on OT-2 type push button switch which malfunctioned at Point Beach Nuclear Power Station Unit 2 on March 1967.
PLANT SITE APPLICABILITY: PointBeach(50-301).
i
- /99010
t ORGANIZATION: WESTINGHOUSE ELECTRIC CORPORATION MONR0EVILLE, PENNSYLVANIA
,t REPORT INSPECTION un. oconina1/n7-n1 pps m s.
PAGE 2 of 3 A.
VIOLATIONS:
.i No violations were identified during this inspection.
B.
NONCONFORMANCES:
No nonconformances were identified during this inspection.
C.
UNRESOLVED ITEMS:
No unresolved items were identified during this inspection.
D.
INSPECTION FINDINGS AND OTHER COMMENTS:
===1.
Background===
On March 17, 1987, Wisconsin Electric Power Corporation (WEP), the owner of Point Beach Nuclear Power Station, reported that a OT-2 type push button (PB) manufactured by Westinghouse malfunctioned during the monthly cperability testing of the reactor trip breakers (RTB). The WEP procedure ICP 2.3, Revision 18. dated May 16, 1986, titled, " Periodic Test Reactor Protection System Logic," requires the operator to depress the PB to verify that the undervoltage trip device (UVTD) actuates in response to a demand from the reactor trip system logic train A to trip RTB A.
Depression of the PB prevents the shunt trip coil (STC) actuation while verifying operability of the UVTD.
Subsequently, the PB is released to verify that the STC actuates.
During the test at Point Beach Unit 2, when the PB was released, the STC did not actuate. The PB was replaced and the STC operability was verified successfully.
The failed OT-2 type PB was brought to Westinghouse by a WEP representative.
2.
_ Tests Performed on the Push Button On March 27, 1987, tests were performed on the P8 at the Westinghouse's Seco Road facility. A written procedure was used to perform the following tests:
a.
Visual examination of PB.
b.
Contact resistance measurement and verification of continuity when the PB was depressed and released.
ORGANIZATION: WESTINGHOUSE ELECTRIC CORPORATION MONROEVILLE, PEMiSYLVAhlA 4
REPORT INSPECTION Nn - 994nin43/R7-01 RESULTS:
PAGE 3 of 3 The movements of the operator button and plunger rod.
c.
d.
Disassembly of the PB and examination of the contacts.
No abnormalities were observed. The physical dimensions of the PB components were in accordance with the manufacturing drawings.
Representatives from Westinghouse and WEP concluded that the PB failure was a random non-repeatable event.
E.
EXIT INTERVIEW:
The inspector met with individuals mentioned in Section F and discussed the scope and findings of the inspection.
F.
PERSONS CONTACTED:
Westinghouse Electric Corporation R. Steve, Project Manager, Point Beach J. Jalovich, Manager, Equipment Qualification Group A. K. Deb, Engineer F. Folino, Quality Assurance Engineer Wisconsin Electric Power Corporation J. Meyer, Electrical Engineer o
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