ML20097F205
| ML20097F205 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 06/08/1992 |
| From: | William Cahill TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| CP-87-046, CP-87-46, TXX-92253, NUDOCS 9206150201 | |
| Download: ML20097F205 (2) | |
Text
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Lug # TXX-92253 C'
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Fi1e # 10110 L-Z 908.3 Ref. # 10Cfk50.55(e)
TUELECTRIC June 8, 1992 William J. Cablil, Jr.
on.,,r, vne rmare U. S. liuclear Regulatory Commission Attn: Document Control Dest Washington, DC 20555
$UBJECT:
COMAtiCHE PEAK STEAM ELECTRIC STATI0ff (CPSES)
Uti!T 2 DOCKET t10. 50 446 CONTAll1HENT SPRAY PUMP MOTOR / ROTOR STATOR GAP SDAR: CP-87 046 (LUPPLEMENTAL REPORT UNIT 2)
REF:
- 1) TV Electric letter logged TXX-6641 from William J. Cahill, Jr.
to NRC dated August 13, 1987
- 2) TV Electric letter logged TXX 88126 f rom William J. Cahill, Jr. to NRC dated January 21, 1988
- 3) TV Electric letter logged 1XX-89431 f rom William J. Cahill, Jr. to NRC dated June 30, 1989 Gentlemen:
On July 17, 1987. TV Electric orally notified the NRC of a deficiency involving the Containment Spray Pump motor / rotor stator gap measurements.
These measurements had been determined to be out of tolerance.
The purpose of the report is '.o identify anc provide justification for reducing the scope of previously committed actions for Unit 2.
Reference 1 stated that excessive air gap had been found in two large open frame motors (Containment Spray) during routine inspections.
The cause of this condition was determined to be foreign material, rust, dust and metal burrs on the rabbet fit between the end bell bracket and stator frame.
Reference's 2 and 3 stated that the (Containment Spray) motors had been cleaned in accordance with the applicable procedures.
10 Electric committed to review work orders of large frame motors in Unit 2 prior to fuel load.
Work orders for thirty seven Unit 1 and common large frame motors were reviewed.
The deficiency was found to be limited to two Containment Spray Pump motors only.
CPSES perf ern'ed an evaluat ion of stator aap f or the Unit 2 Containment Spray Pump rioters.
Historical maintenance worl orders were reviewed and stator air gap measurements were found to be satisfactory.
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TXX-92253 Page 2 of 2 Based on the review of the Unit 2 fontainment $ pray Pump motors and the Unit i results in which no deficiencies were identified in the population of large frame motors reviewed, TU El ectric has concluded that further review of the remaining Unit 2 large f rame motot s is not warranted and that no additional corrective action is required.
Sincerely,
//t Y'
William J. Cal.ill, Jr.
RH5/ds c
Hr. R. D. Martin, Region IV Resident Inspe: tors. CPSES (2)
Mr. T.
A.
Bergman, NRR Hr. B. E. Holian, NPR he
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