ML18033A981
| ML18033A981 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 08/29/1989 |
| From: | Gears G Office of Nuclear Reactor Regulation |
| To: | Black S Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML18033A976 | List: |
| References | |
| NUDOCS 8910130130 | |
| Download: ML18033A981 (7) | |
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t UNlTED $7A7es NUCLEAR REGULATORY COMMISS(ON INASHINGTON,O. C. 20555 August 29, 1989 Docket No. 50-260 MEMORANDUM FOR:
FROM:
SUBJECT:
Date h Time:
Location:
Purpose:
Suzanne Black, Assistant Director for Projects TYA Projects Division Office of Nuclear Reactor Regulation Gerald E. Gears, Project Manager TYA Projects Division Office of Nuclear Reactor Regulation FORTHCOMING MEETING WITH BROWNS FERRY, UNIT 2 September 6,
1989 - 1:00 p.m. - 5:00 p.m.
September 7,
1989 - 7:30 a.m. - 10:00 a.m. (if needed)
Browns Ferry Nuclear Plant Administrative Building (Contact - P.
Car ier - TYA)
- Decatur, Alabama To discuss staff generated issues resulting from its review of TYA's submittal on electrical separation dated June 9, 1989.
Proposed agenda attached.
Participants*:
NRC X. Marinos H. Garg G. Gears D. Moran TYA
~McCarthy D. Skridulis J.
Rinne P.
K. Guha, et al
Attachment:
Agenda cc w/attachment:
See Next Page G
d E. Gears)
Pro ct Manager A
rojects Div'4 ce of Nuclear Reactor Regulation
- Meetings between NRC technical staff and applicants for licenses are open for interested members of the public, petitioners, intervenors, or other parties to attend as observers pursuant to "Open Meetings and Statement of NRC Staff Pc11cy,"
43 Federa1~Re ister 28058, 6/28/78.
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ATTACHMENT PROPOSED AGENDA ITEMS FOR NRC/TVA ELECTRICAL SEPARATION MEETING BROWNS FERRY NUCLEAR PLANT UNIT 2 The following issues have been generated by the staff in its review of the electrical separation submittal dated June 9, 1989.
These issues were pre-viously conveyed to TVA site licensing personnel during the week of August 22, 1989.
It is our understanding that the licensee will be prepared to discuss these questions on'September 6 and 7, 1989 at the Browns Ferry site.
The following questions all refer to the TVA submittal on electrical separation dated June 9, 1989.
1.
There is no discussion about effects of all external
- hazards, only pipe whip and jet impingement.
Please be prepared to discuss.
2.
There appears to be no 'discussion on when decisions will be made on the appropriate corrective actions i.e., either reroute, install redundant protective devices, or analyzers Please be prepared to discuss.
3.
Division V3 cables - Were they looked at during field walkdown for ampacity and Appendix R cables'f not, then please be prepared to discuss the basis for excluding them.
4.
Section 4.4.3.3 - Please be prepared to justify the acceptability of using overcurrent trip circuit or ground fault relays instead of using double breakers or fuse combinations.
5.
Attachment 3 - From the discussion, it is not clear why the following discrepancies are not considered safety significant:
a)
Item 6 Cable P294 b)
Item 7 Cable PL1237-II c)
Item 9 Cable B522-IE
- 6., Items 11 and 12 -
Please be prepared to justify the credit taken for the non-safety equipment in the analysis.
- 7., Item 15 - If Valve FCV-69-12 is not required for isolation, why does it receive an isolation signa17 What will be the effect on the system operation if the valve fails in the close position7 Please be prepared to discuss.
- 8.,
Page I and 18 - Assumptions:
Please be prepared to confirm that double fuses used in V4 control circuits are safety-related.
If not, then please be prepared to justify.
- 9.,
Page I of 18 - Assumptions - Please be prepared to explain why it is not feasible for a cable in a divisional tray to be routed in another division tray.
- 10., Page 1 of 18 - Nethod:
Please be prepared to confirm that when identifying the redundant functions. all cables required by the support equipment, power, cooling water system, etc.
are also identified.
- 11., Item 8, Page 9 and 18:
Please be prepared to identify the design problems discovered during the investigation of the mis-routed cables.
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Meetin Summar Memoranda for Tri Re orts or Site Visits~
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NRC PDR~
Local PDR BFN Reading ADSP Reading J.
Sniezek D. Crutchfield B.
D. Liaw S. Black R. Pierson G. Gears D. Moran T. Daniels N. Markisohn B. Wilson, Regi W. S. Little OGC H. Garg A. Marinos D. Carpenter ACRS (10)
GPA/CA (M. Call E. Jordan B. Grimes J. Scarborough G. Marcus L. Norrholm C. Ader J.
Gray R. Borchardt LA on II ahan)
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