ML20215K298
| ML20215K298 | |
| Person / Time | |
|---|---|
| Site: | Braidwood  |
| Issue date: | 05/05/1987 |
| From: | Turbak M COMMONWEALTH EDISON CO. |
| To: | Davis A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| IEB-83-05, IEB-83-5, NUDOCS 8705110144 | |
| Download: ML20215K298 (3) | |
Text
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i ) One Fire Neonel Plaza. CheeDo, Illinois V
Address Reply to: Poet Omco Box 767
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ChcaGo, lilinois 60800 0767 L
c May 5, 1987 1.
I i
Mr. A. Bert Davis Regional Administrator U.S. Nuclear Regulatory Comunission Region III 799 Roosevelt Road Glen Ellyn, IL. 60137
Subject:
Braidwood Station Unii 1 Supplemental Response to I.E.Bulletin 83-05 NRC Docket No. 50-456 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 1.
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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.
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8705110144 870505 PDR ADOCK 05000456 G
7 A.B. Davis May 5, 1987 one (1) signed original with attachment is being sent directly to the U.S. Nuclear Regulatory Document Control Desk in Washington, D.C. for reproduction and distribution as requested in the Bulletin.
Very truly yours, M. S. Turbak Operating Plant Licensing Director 1m Attachment cc:
U.S. Nuclear Regulatory Commission Document Control Desk Washington, D.C.
20555 Resident Inspector - Braidwood l
SUBSCRIBED AND S RN to before m this day
, 1987 of MO I
Notary Public
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3028K
ATTAC15ENT Braidwood Station Unit 1 Performance Test Results, Essential Service Water Pump 4SX04P The Braidwood Unit 1 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 80 psig Discharge Pressure 122 psig Differential Pressure 42 psig Flowrate 432 gpm Developed Head 96.8 ft.
Ambient Room Temp'rature 70*F Thrust Bearing Temperature 121*F Inboard Bearing Temperature 121'F Outboard Bearing Temperature 138'F Seal Leakage None Vibration Signature Acceptable RPM Speed Check Acceptable Hydrortatic Test Acceptable The results of the performance test for the ISX04P pump at runout flow conditions are as follows:
Suction Pressure 68 psig Discharge Pressure 68 psig Flowrate 961 gpm
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Vibration Signature Acceptable Bearing Temperature 91.4*F i
Ambient Temperature 66.2*F i
Seal Leakage None Braidwood Station has not tested the ISX04P pump at minimum flow conditions because of the potential for damage to the diesel engi.9 of the associated FW pump. The 1SX04P pump supplies jacket cooling water to the diesel engine. Running the pump under minimum flow corditions could result in inadequate heat removal and subsequene diesel engine overheating.
i We believe the concerns expressed in the subject bulletin have been adequately addressed for the Braidwood Unit 1 essential service water punip.
3028K
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