ML20237B178
| ML20237B178 | |
| Person / Time | |
|---|---|
| Site: | Braidwood  |
| Issue date: | 12/10/1987 |
| From: | Morgan W COMMONWEALTH EDISON CO. |
| To: | Davis A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| 3962K-BS, IEB-83-05, IEB-83-5, NUDOCS 8712160075 | |
| Download: ML20237B178 (2) | |
Text
Commnnwrith Edison
/'
ng Ons First National Plaza. Chicago, Ilhnois V '
Address Reply to: Post Office Box 767 Chicago, Illinois 60690 - 0767 December 10,' 1987 Mr. A. Bert Davis Regional Administrator U.S. Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, IL 60137
Subject:
Braidwood Station Unit 2 Supplemental Response to IE Bulletin 83-05 NRC Docket No. 50-457 References (a):
I. E.Bulletin 83-05 dated May 13, 1983.
(b):
- p. L. Barnes letter to J. G. Keppler dated August 12, 1983.
Dear Mr. Davis:
Reference (a) requested that commonwealth Edison provide a written report regarding the use of ASME nuclear code pumps and spare parts manufactured by the Hayward Tyler pump Company. Reference (b) provided the initial response for Braidwood Unit 2.
We committed to provide the results of the pump performance test and the system hydrostatic pressure test following their completion. The attachment to this letter provides those test results.
please address any questions regarding this response to this office.
One signed original with attachment is being sent directly to the US Nuclear Regulatory Commission Document Control Desk for reproduction and distribution as requested in the Bulletin.
Very truly yours, t
e i
871216007s 871210 k," Q b (M
yt
{DR ADOCK 05000457 I
PDR W. B. Morgan l
Nuclhar Licensing Administrator l
Attachment cc: US Nuclear Regulatory Commission Document Control Desk Washington DC 20555 1
Resident Inspector - Braidwood SUBSCR BED and S to bef e me thig / l day of A w Ida
, 1987 01A 0LU Notary Pubiic g\\
i 3926K/bs g
'\\
l E------------
/
i ATTACHMENT 1
BRAIDWOOD STATION UNIT 2---
j PERFORMANCE TEST RESULTS 1
I l
ESSENTIAL SERVICE WATER PUMP The Braidwood Unit 2 essential service water pump underwent a 48 hour5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> endurance run under normal flow conditions as part of the auxiliary feedwater system pre-operational test.
The results are as follows:
Prestart Alignment Test Acceptable Suction Pressure 75 psig l
Discharge Pressure 118 psig Differential Pressure 43 psig Flowrate 430 gpm i
Developed Head 99.2 ft.
l Ambient Room Temperature 78'F Bearing Temperature 117'F Seal Leakage None Vibration Signature Acceptable j
RPM Speed Check Acceptable i
Hydrostatic Test Acceptable The results of the performance test for the 2SX04P pump at runout flow conditions are as follows:
Suction Pressure 74 psig Discharge Pressure 65 psig Flowrate 1050 gpm Vibration Signature Acceptable Bearing Temperature ll?'F Ambient Temperature 78*F Seal Leakage None Braidwood Station has not tested the 2SXO4p pump at minimum flow conditions because fo the potential for damage to the diesel engine of the associated feedwater pump. The 2SX04P pump supplies jacket cooling water to the diesel engine. Running the pump under minimum flow conditions could result in inadequate heat removal and subsequent diesel engine overheating.
We believe the concerns expressed in the subject bulletin have been adequately addressed for the Braidwood Unit 2 essential service water pump.
No further action is required at this time.
3926K 1
l L-_--_____-_____-___-_-_________________-
_