TXX-4937, Responds to IE Bulletin 85-001, Steam Binding of Auxiliary Feedwater Pumps. Procedures Developed for Monitoring Fluid Conditions within Automatic Feedwater Sys,For Recognizing Steam Binding & for Restoring Sys to Operable Status
| ML20205H769 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 08/01/1986 |
| From: | Counsil W TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | Martin R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| IEB-85-001, TXX-4937, NUDOCS 8608200145 | |
| Download: ML20205H769 (2) | |
Text
i Log # TXX-4937 File # 10115 IEB 85-01 i
TEXAS UTILITIES GENERATING COMPANY
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August 1, 1986 MSMihiE*i Mr. Robert D. Martin Regional Administrator, Region IV AUb 6g U. S. Nuclear Regulatory Commission I
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611 Ryan Plaza Drive, Suite 1000 Arlington, TX 76011
SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)
DOCKET NOS. 50-445 AND 50-446 IE BULLETIN 85-01 STEAM BINDING 0F AUXILIARY FEEDWATER PUMPS
Dear Mr. Martin:
The following information is given in response to IE Bulletin 85-01, " Steam Binding of Auxiliary Feedwater Pumps":
ITEM 1 Develop procedures for monitoring fluid conditions within the AFW system on a regular basis during times when the system is required to be operable. This monitoring should ensure the fluid temperature at the AFW pump discharge is maintained at about ambient temperature. Monitoring of fluid conditions, if used as the primary basis for precluding steam binding, is recommended each shift.
This item is not intended to require elaborate instrumentation. A simple means of monitoring temperature, such as touching the pipe, is a satisfactory approach.
RESPONSE
The CPSES Operations organization has revised its work instruction for log keeping and equipment inspections to include a checklist item requiring that the pump casing on the motor driven and turbine drive AFW pumps be vented each shift.
Evidence of steam venting will indicate fluid temperature above ambient conditions.
IIEJZ Develop procedures for recognizing steam binding and for restoring the AFW to operable status, should steam binding occur.
RESPONSE
A procedure is being developed which will include instructions for identifying steam binding, and will provide appropriate operator actions to restore the AFW pumps to an operable status, should steam binding be detected.
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i llEB 3 Procedural controls should remain in effect until completion of hardware modification to substantially reduce the likelihood of steam binding or until superceded by action implemented as a result of resolution of Generic Issue 93.
RESPONSE
Procedural controls as described in Item 1 and 2 shall remain in effect pending further development and resolution of Generic Issue 93.
ADDITIONAL RE0 VESTED INFORMATION The following additional information was requested.
1.
Staff time to perform requested reviews and testing
Response
Sixteen (16) man-hours 2.
Staff time to prepare requested documentation Response: Sixteen (16) man-hours Very truly yours, i
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W. G. Counsil THE STATE OF TEXAS COUNTY OF DALLAS There personally appeared before me W. G. Counsil, being duly sworn, did state that he is Executive Vice President, Nuclear Engineering and Operations of Texas Utilities Generating Company, a division of Texas Utilities Electric Company; that he is duly authorized to sign and file with the Nuclear Regulatory Commission this response to IE Bulletin 85-01 that he is familiar with the content thereof; and that the matters of face set forth therein are true and correct to the best of his knowledge, information, and belief.
Ai Notary Public GUD/T// H. ///92MA)
My commission xpires:
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BSD/arh Attachment c - U. S. Nuclear Regulatory Commission (0 + 40 copies)
Document Control Desk Washington, D.C.
20502 Mr. Vince S. Noonan
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