ML20137H333
| ML20137H333 | |
| Person / Time | |
|---|---|
| Issue date: | 11/13/1985 |
| From: | Alexander S, Potapovs U NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| To: | |
| Shared Package | |
| ML20137H304 | List: |
| References | |
| REF-QA-99900900 NUDOCS 8512020369 | |
| Download: ML20137H333 (10) | |
Text
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ORGANIZATION: WESTINGHOUSE ELECTRIC CORPORATION NUCLEAR TECHNOLOGY DIVISION FOREST HILLS, PENNSYLVANIA INSPECTION INSPECTION REPORT DATE(S):
9/16-17/85 ON-SITE HOURS:
26 NO.: 99900900/85-02_
CORRESPONDENCE ADDRESS: Westinghouse Electric Corporation Nuclear Technology Division ATTN: Mr. J. L. Gallagher, General Manager Post Office Box 355 Pittsburgh, Pennsylvania 15230-0355 ORGANIZATIONAL CONTACT: Mr. P. T. McManus, QA Manager, NTD TELEPHONE NUMBER:
(412) 825-7988 PRINCIPAL PRODUCT: Functional and environmental testing of nuclear power plant equipment.
NUCLEAR INDUSTRY ACTIVITY: Westinghouse Nuclear Technology Division (W-NTD)
Forest Hills test laboratory performs developmental, verification and quali-fication testing of both nuclear and non-nuclear power plant components.
Loss-of-coolant accident (LOCA)/ thermal aging equipment qualification testing of nuclear power plant safety-related equipment comprises approximately 10%
of the facility's work.
ASSIGNED INSPECTOR:
Mw
//////45 S. D. Alexan8er, Equp. Qual. Inspec. Section (EQIS) Dath OTHERINSPECTOR(S):
M. Jacobus, Sandia National Laboratories (SNL) t bo-Y2 A"-
Il-IL'[3C APPROVED BY:
O
- 11. Potapovs, Chief, EQIS, V(ndor Program Branch Date
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INSPECTION BASIS AND SCOPE:
A.
BASIS:
B.
SCOPE: This inspection consisted of observation of a high energy line break (HELB) test on a large pump motor (LPM), review of related documentations and follow up on issues raised during the previous inspection.
PLANT SITE APPLICABILITY: 50-412/ Beaver Valley-2, 50-423/ Millstone-3.
gwm*
ORGANIZATION: WESTINGHOUSE ELECTRIC CORPORAT10N NUCLEAR TECHNOLOGY DIVISION FOREST HILLS, PENNSYLVANIA REPORT INSPECTION NO - 99900900/85-02 RESULTS:
PAGE 2 of 4 A.
Violations:
None.
B.
Nonconformances:
None.
C.
Unresolved Items
'!one.
D.
Status of Previous Inspection Findings:
1.
(0 pen) Unresolved Item (85-01, Item C.1): W-NTD had not received from its irradiation services subcontractor all the specific data required by procurement specifications for test program 83-0296. The NRC inspector examined a letter from W-NTD,to the subcontractor written since the last inspection requesting the missing data and examined the material provided by the subcontractor in response.
The inspector noted that while the data were provided, there was no evidence that the data sheets had been reviewed as required by the procurement specification.
E.
Other Findings and Comments:
1.
Observation of Testing A 600 HP electric motor (LPM) was being tested for a HELB environment.
The test was intended to be generic in scope, although several specific applications at two plants had been identified. The NRC inspectors witnessed portions of the first 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of the test.
Prior to the HELB transient, the motor was run for a minimum of two hours in accordance with the test plan. The HELB was begun at about 2:45 p.m. on 9/16/85. The following test plan deviations / anomalies were noted:
ORGANIZATION: WESTINGHOUSE ELECTRIC CORPORATION o
NUCLEAR TECHNOLOGY DIVISION FOREST HILLS, PENNSYLVANIA INSPECTION REPORT RESULTS:
PAGE 3 of 4 NO.-
99900900/85-02 a.
The test plan specified a ramp time of ten seconds to 220 F.
The actual ramp time achieved was approximately 100 seconds. The remainder of the profile was met or exceeded through 65 minutes into the test.
The rest of the. test data for the initial 24-hour period were not readily available for inspection, but checks were made at several times to verify compliance with the test plan.
b.
The test plan called for a relative humidity (RH) of.100%
for 65 minutes to 7 days. The normal value for RH on the instrumentation parameter list was specified as 90% with a warning given at 75%. Westinghouse personnel stated that 90% was the typical value observed in the pretest runs, but 100% was the target value. The values observed during the test were in the 120% range. W-NTD personnel stated that a post-test calibration will be performed on the humidity instrument to verify consistency with pre-test values, but the anomalous values observed probably resulted from exceeding instrument capabilities in the moisture saturated, HELB test chamber environment.
During the parts of the test witnessed by the inspectors, motor phase currents remained relatively stable and no anomalous conditions of the motor were observed.
2.
The NRC inspectors reviewed equipment qualification documentation related to the HELB on the LPM with the following comments:
a.
Much of the documentation was not available for inspection
~
because it has not yet been received at Forest Hills. This documentation, which will be reviewed in a future inspection, includes the thermal aging data, the mechanical cycling data (the motor was started 2000 times), and the functional test data taken between phases of the test.
b.
The thermal aging oven had a specified accuracy of control of 3 C and the thermocouples recording the temperature had a tolerance of 4 F, for a maximum possible error of about 5.2 C, a difference which could make the aging time change significantly. Westinghouse compensated for this problem in two ways.
First, the oven temperature was monitored by four thermocouples, and their average used for control, thus reducing the expected error in temperature measurement.
Secondly, 15 F margin was added to the anticipated service temperature, making the errors relatively inconsequential.
ORGANIZATION: WEST 1NGH00SE ELECTRIC CORPORATION s
NUCLEAR TECHNOLOGY DIVISION
~
FOREST HILLS, PENNSYLVANIA INSPECTION REPORT RESULTS:
PAGE 4 of 4 NO.-
99900900/85-02 The only part of the motor thermally aged was the stator c.
since all other parts were made of metal.
d.
The test plan specified that the motor be cleaned before reassembly after thermal aging. Westinghouse justified this by stating that cleaning is part of normal reassembly procedures (the motor was disassembled for thermal aging) and that the instruction manual requires periodic cleaning of the motor.
e.
Several deviation notices were reviewed and found to contain adequate disposition actions.
f.
The oil used in the motor during the HELB was to be aged and irradiated according to the test plan. Westinghouse stated that the oil had been irradiated but because of problems with thermal aging, the oil was aged by bubbling air through it for 3 days at ambient temperature to simulate oxidation.
g.
Most subcontractor data were not available for review except those from the irradiation facility.
Review of the letter report from this subcontractor indicated that irradiation had been conducted in accordance with the test plan. However, the package was found to be lacking some items called for in the procurement specification including photographs and a description of the test facility and set up. This area will be reviewed in a future inspection.
h.
The inspectors reviewed the temperature and pressure plots on the strip chart recorder output and the data logger printouts ~
which had been generated during the first 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of the test.
The strip chart recorder output (covering the initial transient conditions) was consistent with data logger printouts with the exception that (1) the strip chart recorder output was anotated with the wrong test program number (83-0292 instead of 82-0292) and (2) the initial chart speed used was 20 in./ min., as speci-fied in the procedure, while it was annotated as 4 in./ min.
W-NTD corrected these discrepancies stating that they had not yet had time adequately to review the data themselves.
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