ML20207L777
| ML20207L777 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 02/18/1999 |
| From: | Wiens L NRC (Affiliation Not Assigned) |
| To: | Thomas C NRC (Affiliation Not Assigned) |
| References | |
| NUDOCS 9903180267 | |
| Download: ML20207L777 (3) | |
Text
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A Prge 1 February 18,1999 MEMORANDUM TO: Cecil O. Thomas, Director Project Directorate 11-3 Division of Licensing Project Management FROM:
Leonard A. Wiens, Senior Project Manager / Original signed by:
Project Directorate ll 3 Division of Licensing Project Management
SUBJECT:
MEETING WITH FLORIDA POWER CORPORATION CONCERNING CRYSTAL RIVER UNIT 3 LOW PRESSURE INJECTION SYSTEM PUMP SUCTION VALVE POSITION DATE & TIME:
Friday, March 12,1999 1:00 p.m. - 3:00 p.m.
LOCATION:
Nuclear Regulatory Commission 11555 Rockville Pike Rockville, Md Room O-11-B2 PURPOSE:
To discuss with the licensee deficiencies identified in their license amendment request to change the standby position of the low pressure injection and building spray systems suction valves from normally open to normally closed. The deficiencies are specified in the enclosure.
- PARTICIPANTS:
NRC FPC E. Weiss, NRR D. Roderick C. Jackson, NRR S. Bernhoft L. Wiens, NRR S. Powell et. al.
S. Greenley T. Austin J. Huecker et. al.
Docket No. 50-302
Attachment:
Amendment Deficiencies CONTACT: L Wiens, NRR (301) 415-1495
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- Meetings between NRC technical staff and applicants or licensees are open for interested members of the putdic, petitioners, Intervenors, or other parties to attend as observers pursuant to " Commission Policy Statement on Staff Meetings Open to the Public" 59 Federal Reoister 48340,9/20/94. Membars of the public who wish to attend should contact Len Wiens at (301) 415-1495.
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LOW PRESSURE INJECTION SYSTEM AND BUILDING SPRAY SYSTEM AMENDMENT CHANGING NORMAL STANDBY POSITION OF PUMP SUCTION VALVES l
March 21,1998 QUESTIONS r
1.~
The Low Pressure Injection (LPI) and Building Spray (BS) systems, with the suction.
source of water isolated, are more vulnerable to the adverse effects of gas accumulation and voiding. As a compensatory measure, the licensee has proposed r. surveillance
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that verifies the system pressure has not dropped below atmospheric pressure, which is intended to identify leaks in the system which would allow air to migrate into the system.
However, the staff has pointed out, and the licensee acknowledged in the subsequent submittal, that it is possible to accumulate a pressurized gas volume in the system piping, as evidenced by a number of operational events that will not be detected by the proposed surveillance. There are currently no Technical Specification venting surveillance requirements and none are proposed. The submittal is deficient in that requirements are not included which would preclude the adverse effects of pressurized gas volumes in the LPl and BS syc' ems.
2.
The licensee indicated that the design basis opening time of the suction valves is 25 seconds and the LPI pumps receive a start signal 15 seconds after the suction valves receive an open signal. The valve opening / pump start sequence for the BS suction supply was not addressed by the licensee. The licensee has not verified that the design basis time for the valves to be fully open (currently 25 seconds) is sufficient to assure that the valves will be open sufficiently to allow the LPI or the BS pumps to start without adverse effects. As a result, because it was not demonstrated that the system suction valve design basis opening time is adequate to assure the LPI and BS pumps have an adequate suction supply of water, assuming design basis valve opening and -
pump start times, the amendment request is deficient.
i Attachment i
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V l
l Meetina Notice Dated February 18, 1999 i
Distribution E-Mail S. Collins /R. Zimmerman (SJC1/RPZ)
'J. Zwolinski (JAZ)
C. Thomas (COT)
L Wens (LAW)
B. Clayton BAC2)
L. Wert (LXW1) '
M. Tschiltz, Rll (MDT)
K. Clark, Ril (KMC2)
E. Weiss (EWW)
' C. Jackson (CPJ)
PMNS (Meeting Announcement Coordinator)
Hard Coov Docket File PUBLIC Crystal r/f OGC ACRS Receptionist (OWFN and TWFN) cc: Licensee & Service List k
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