ML19327A268
| ML19327A268 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 07/31/1980 |
| From: | Sylvia B VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | Harold Denton, Youngblood B Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0588, RTR-NUREG-588 674, NUDOCS 8008050161 | |
| Download: ML19327A268 (2) | |
Text
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VIHOINIA EI.ECTRIC AN D l' OWE R CObi mNY H acsonoNaa,VIMGINIA 20261 July 31, 1980 Mr. Ilarold R. Denton, Director Serial No. 674 Office of Nuclear Reactor Regulation N0/JTR:smv Attention:
Mr. B. Joe Youngblood, Chief Docket No. 50-339 Licensing Branch No. 1 License No. NPF-7 Division of Licensing U. S. Nuclear Regulatory Commission Washington, D. C.
20555
Dear Mr. Denton:
EARLIEST POSSIBLE IMPLEMENTATION OF NUREC, 0588 REQUIREMENTS AND FIRE PROTECTION MODIFICATIONS NORTil ANNA UNIT NO. 2 In response to the request from Mr. R. L. Tedesco of your staff on July 30, 1980, we have determined the earliest possible dates for full implementation of NUREG 0588 requirements and fire protection modifications on North Anna I
Unit 2, assuming the unit would not.be allowed to operate above 5% power until then.
NUREG 0588 Requirements The earliest date we could have all electrical equipment meet the require-ments of NUREG 0588 is June 198'.
Based on our review and evaluation thus 2
far, the longest lead items in this regard are the instrument transmitters for measuring pressure, IcVel, and temperature of the pressurizer, tempera-ture and pressure of the reactor coolant system, and water icvel in the steam generators.
The current transmitter qualification program being sponsored by an owners group of some 20 utilities (including Vepco) will not be completed until the end of 1981.
Assuming that at Ic.ast one type of transmitter j
passes the full test program and is approved by the NRC Staff, it will 1
take from 26 to 40 weeks to manufacture, deliver, and install qualified transmitters. Thus, full implementation taken on Unit 2 would be between June and October of 1982.
We do not feel that we could shorten the time required to qualify trans-mitters by attempting a program on our own because we most likely would not get the same vendor responsiveness as the owners group.
l 8 o o s osa 16\\
Vinotw A Es.zeranc Awo Powsa Coxrm to Mr. Harold R. Denton, Director Fire Protection Modifications The earliest date that all three remaining fire protection modifications could be fully implemented is November 1,1980.
The modifications that have the longest lead time in this regard are the smoke detector system and the reactor coolant pumps motor oil collection system.
The smoke detector system modification is presently in the design stage.
On an expedited basis, we hope to complete the design work and material delivery by October 1,1980.
Installation will start in mid-September based on the completed design work and partial material delivery at that t ime, but the system will not be completed until November 1,1980 due to the labor intensive nature of the installation activities.
The oil collection system is presently being fabricated.
However, due to the intricacy of the key components (oil collection enclosures),
fabrication is expected to be completed no earlier than October 15, 1980.
Installation will then require approximately two weeks.
The third modification, the charging pump discharge cross connect, could possibly be installed by October 15, 1980.
However, this would require an otherwise unscheduled outage of Unit 1 to complete the tie-in to the Unit 1 charging pumps.
Furthe rmore, this schedule assumes that the safety analysis that is to be completed by Westinghouse by September 15, 1980 supports the present design without modification.
It should be emphasized that the above schedules for Unit 2 assume that all activities involved can be successfully expedited.
Furthermore, it should be noted that expediting these activities to the degree indicated could have a detrimental impact on similar activities on our other operating nuclear units.
Very truly yours, D/.
B. R. Sylvia Manager - Nuclear Operations and Maintenance JTR/sav:SV2 cc:
Mr. James P. O'Reilly, Director Office of Inspection and Enforcement Region II Atlanta, Georgia 30303 1
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