ML20117N854
| ML20117N854 | |
| Person / Time | |
|---|---|
| Site: | 05200003 |
| Issue date: | 05/08/1996 |
| From: | Winters J WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP. |
| To: | Kenyon T NRC |
| Shared Package | |
| ML20117N226 | List: |
| References | |
| NUDOCS 9606250032 | |
| Download: ML20117N854 (4) | |
Text
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FAX COVER SHEET V/1 Westinghouse aus
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NAME:
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Cover + Pages 1+q The following pages are being sent from the Westinghouse Energy Center, East Tower, Monroeville, PA. If any problems occur during this transmission, please call:
WIN: 284-5125 (Janice) or Outside: (412)374 5125.
COMMENTS:
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Criteria Referenced AP600 Section Criteria Position Comments / Summary of Exceptions i
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GDC 46 Exception These systems are not required for acendent conditions in the passive design.
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i Winters, James From:
Winters, James To:
Palinski, Mike Cc:
Butler, John; Cummins, W. Ed; Hutchings, Donald; McDermott, Dan; Mcintyre, Brian; Nydes, Robin; Schulz, Teny; Winters, James; CANTON, MIKE subject:
Open item 1712 (DSER 0110.4.9-1) 4 Date:
Tuesday, May 07,19961:12PM
- Mike, Please change the (W) Status to: " Resolved." Please REPLACE the Status Detail with: " Resolved - The maintenance, surveillance and inservice inspection and testing of the startup feedwater system as it relates to j
safety or defense in depth is incorporated into various sections of the SSAR. Maintenance of this system is l
incorporated as one of the systems included in the " Maintenance Rule." Surveillance of startup feedwater components important to safety is covered by the Tech Specs, to be issued with section 16.1 in July. A draft of the applicable section has been provided to NRC for informal review. Inservice inspection of the active valves l
(Startup Feedwater control) in the system is covered by subsection 3.9.3.2.2. Revision 5. The applicable active valve table (Table 3.9-16) will continue to include these valves when reissued in Revision 8. Inservice testing of the active valves is also included in Table 3.9-12. The components of the startup feedwater system that passed the screening enteria for Reliability Assurance Program are the startup feedwater pumps. This program and its related activities are discussed i SSAR subsection 16.2, Revision 7. Combined Operating License applicant actions required for the staltup feedwater system are included in general Combined Operating License information items, there are no specific items required solely for the startup feedwater system. No further changes are required for Chapter 10. This item can be closed after issue of the next SSAR Revision of Table 3.9-12 and Section 16.1."
1 Everyone Else Please look at this. I hope to use it on Thursday moming as the basis for discussion with NRC Plant Systems Branch.
Thanks Jim x5290 4
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SSAR subsection 9.2.10, Revision 6. states that the hot water heating system serves no safety-related function and therefore has no nuclear safety design basis. The information provided in the subsection is sufficient for review of the system's potential for impact on the safety of the plant. The subsection also states that instruments are provided for monitoring system parameters and that essential system parameters are monitored in the main control room. The current design of the integrated data display and control systems have instruments in the hot water heating system on the data highway. This allows for any of the system instmments to be monitored or displayed in the control room. Imal display is also provided as requested by the roving operator on his portable display device. Normal operating display of system parametric data will be developed as part of the man-machine interface, human factors engineering process described in Chapter 18 of the SSAR.
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a NRC REQUEST FOR ADDITIONAL INFORMATION MQ OAny Question 410.291 In Revision 4 of Section 10.4.9.1.2 of the SSAR, Jtem G. Westinghouse changed the statement to state that the startup feedwater system uses the condensate storage tank as a water supply source and deleted the statement "uses either the plant deaerator or the condensate storage tank as a water supply source" and replaced "deaerator" with
" condensate storage tank" in all other related statements. Howeser Section 10.4.9.2.2 of the SSAR (Revision 4) states, in part, that the startup feedwater pumps take suction from either the deaerator storage tank or condensate storage tank. Explain the inconsistency in the design changes between the two sections of the SSAR.
Response-In Revision 6 of the SSAR, sections 10.4.9.2.1 and 10.4.9.2.2 have been revised to be consistent with the /ttst bullet of section 10.4.9.1.2. ne main feedwater system and the startup feedwater system are parallel systems. De main feedwater system draws water from the deaerator tank and delivers it to the main feed rings within the steam generators. The startup feedwater system draws water from the condensate storage tank and delivers it to the s:artup feedwater nozzle on the steam generators. ney have a manual cross-connect between their respective pumps and control valves. His will allow the main feed pumps to supply water from the deaerator tank to the startup feedwater noules on the steam generators. A check valve (in addition to the normally closed isolation valve) in the cross-conneet prevents the startup feedwater pumps from supplying water from the condensate storage tanks to the main feed header and steam generator main feed rings.
SSAR Revision: NONE 410.291-1 G00'3003
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