ML20155C544
| ML20155C544 | |
| Person / Time | |
|---|---|
| Site: | Fort Saint Vrain  |
| Issue date: | 06/07/1988 |
| From: | Callan L NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | Robert Williams PUBLIC SERVICE CO. OF COLORADO |
| References | |
| IEB-85-003, IEB-85-3, NUDOCS 8806140242 | |
| Download: ML20155C544 (3) | |
Text
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In Reply Refer To:
Docket: 50-267 Public Service Company of Colorado ATTN: Robert 0. Williams, Jr.
Vice~ President, Nuclear Operations 2420 W. 26th Avenue, Suite 15c Denver, Colorado 80211 Gentlemen:
As the result of the NRC's review of PSC letters of October 15,'1987, May 14,
' June 17, September 6 and.16,1988, in response to IEB 85-03, "Motor Operated Valve Connon Failures during Plant Transient due to Improper Switch Settings",
it is requested that you provide the additional 1:1 formation identified in the attachment to this letter.
The additional information is requested to complete our review of your 3rogram to assure valve operability and should be submitted within S0 days of tie date of this letter.
Since.rgly,
.Ong:nal signed By L.7. C.Od M L. J. Callan, Director Division of Reactor Projects
Attachment:
As stated above cc:
Fort St. Vrain Nuclear Station Manager, Nuclear Production Division 16805 WCR 191 Platteville, Colorado 80651 Fort St. Vrain Nuclear Station P. Tomlinsoa, Manager, Quality Assurance Division (sameaddress)
Colorado Radiation Control Program Director Colorado Public Utilities Commission DRP/PS:B c DRP/D $
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REQUEST FOR ADDITIONAL INFORMATION (RAI) RE:
Review of Responses to Action Item e of IE Bulletin 85-03 Licensee:
Unit (s): Fort St. Vrain Public Service Co. of Colorado Date of Response: 05-14-86 P.O. Box-L40 06-17-86 Denver, Colorado 80201-0840 09-05-86 09-16-87 10-15-87 Respondent:
R. O. Williams, Jr.,
Vice President Nuclear Operations The information provided in your response to Action Item e of IE Bulletin 85
",3 was found to be deficient in some areas.
Provide the additional information necessary to resolve the following comments and questions:
- 1. Has water hammer due to valve closure been considered in the determination of pressure differentials?
If not, please explain.
- 2. Include motor-operated valves HV-5316 and HV-5317 in your response, or justify their exclusion.
These MOVs are located in steam supply lines leading to turbine drives for two of the three boiler feed pumps, which supply both normal and emergency feedwater.
Refer to drawings PI-53 Revision BE and'PI-31-1 Revision AF.
- 3. Include the following details as a minimum in a program for action items b, c and d,of the bulletin:
(a) commitment to a training program for setting switches, maintaining valve operators, using signature testing equipment and interpreting signatures, (b) commitment to justify continued operation of a valve determined to be inoperable, (c) justification of a possible alternative to testing at maximum differential pressure at the plant, and (d) consideration of pipe break conditions as required by the bulletin.