ML20053A234
| ML20053A234 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 05/21/1982 |
| From: | Jackson E VERMONT YANKEE NUCLEAR POWER CORP. |
| To: | Vassello D Office of Nuclear Reactor Regulation |
| References | |
| TASK-2.K.3.17, TASK-TM FVY-82-57, NUDOCS 8205250114 | |
| Download: ML20053A234 (4) | |
Text
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C VERMONT Y ANimE ' NUCLEAR POWER CORPORATION SEVENTY SEVEN GROVE STREET 2.C.2.1 RUTI. ann, VERMONT OG701 FVY 82-57 REPLY TO:
ENGINEERING OFFICE 1671 WORCESTER ROAD FR AMINGH AM. M ASSACHUSETTS OI701 TELEPHONE S17 872 8100 May 21, 1982 U. S. fluclear Regulatory Commission Washington, D.C. 20555 Attention:
Office of fluclear Reactor Regulation Mr. Dominic B. Vassello, Chief Operating Reactors Branch #2 Division of Licensing
References:
(a) License flo. DPR-28 (Docket flo. 50-271)
(b) Letter, USflRC to VYt1PC, dated March 16, 1982
Dear Sir:
Subject:
Action Plan Item II.K.3.17, Report on Outages of ECCS, Request for Additional Information Reference (b) requested Vermont Yankee to provide a complete summary of ECC5 outages for surveillance testing and preventive maintenance during the five (5) years of operation through 1980.
The results are as follows:
Surveillance The ECCS and diesel generator systems or subsystems are not normally taken out of service for surveillance testing.
The surveillance activities which require these systems or subsystems to be out of service are completed during plant i
i shutdowns when the equipment is not required to be operable except for the following:
1.
HPCI & RHR (LPCI) Trip System Logic Functional l
Tests and Calibrations. These activities require I
complete system level inoperability during the testing period.
Each system is inoperable for eight (8) hours twice a year for a total of 80 i
l hours per system for the five year period. Re-lief from these testing requirements has been l
requested (see Proposed Change 80, dated l
May 18,1979).
\\
2P A s, I I l
8205250114 020521 DR ADOCK 05000271
- - - JPn.
i VERMONT YANKEE NUCLEAR POWER CORPORATION I U. S. Nuclear Regulatory Commission Page 2 1
2.
CS & ADS Trip System Logic Functional Tests and Cali-brations are also done twice a year. One of two sub-i systems is removed from service each time.
Each sub-i system requires 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> to complete the tests.
- Thus, again, 80 hours9.259259e-4 days <br />0.0222 hours <br />1.322751e-4 weeks <br />3.044e-5 months <br /> of system outage time is required for each system for the five year period.
Preventive Maintenance It has not been Vermont Yankee's practice to take systems or subsystems out of service for performance of preventive main-tenance during periods when they are required to be operable.
Preventive maintenance activities which require these systems or subsystems to be out of service are scheduled for plant shut-4 downs when the systems or subsystems are not required to be operable.
Appendix A provides the information required for Reference (b) in a tabular format.
f We trust this information is responsive to your request; however, should additional data be required, do not hesitate to contact us.
i Very truly yours, I.
Earl W Jackson Manage of Operations EWJ/jh i
l
~.
a.
APPENDIX A SURVEILLANCE
'M e.e ma eng +
SYSTE?f TEST / COMPONENT DATE OUT/ DURATIONS DATE OUT/ DURATIONS DATE OUT/ DURATIONS DATE OUT/DURAT;
~
1-17'<9/4hr;l HPCI Trip System 7.ogic 2-4-76/4 hrs.
1-18-77/4 hrs.
1-18-78/4 hrs.
- * ' " ! Jatc7'un$1 Tes t s 7-24-76/4 hrs.
7-20-77/4 hrs.
7-21-78/4 hrs.
7-17-79/4 hr) and Calibrations 2-3-77/4 hrs.
HPCI Isolation Trip System 3-10-76/4 hrs.
3-9-77/4 hrs.
3-9-78/4 hrs.
3-6-79/4 hrs, Logic Functional Tests 9-10-76/4 hrs.
10-1-77/4 hrs.
9-6-78/4 hrs.
9-7-79/4 hrs and Calibrations LPCI Trip System Logic 6-10-76/8 hrs.
6-8-77/8 hrs.
6-1-78/8 hrs.
7-10-79/8 hr Functional Tests and 12-2-76/8 hrs.
11-30-77/8 hrs.
11-30-78/8 hrs.
11-28-79/8 h{
Calibrations CS Trip System "A" Logic 2-19-76/4 hrs.
2-17-77/4 hrs.
2-16-78/4 hrs.
2-15-79/4 hrq Functional Test and 8-17-76/4 hrs.
8-18-77/4 hrs.
8-17-78/4 hrs.
8-17-79/4 hrs Calibration CS Trip System "B" Logic 2-19-76/4 hrs.
2-17-77/4 hrs.
2-16-78/4 hrs.
2-15-79/4 hrs Functional Test and 8-17-76/4 hrs.
8-18-77/4 hrs.
8-17-78/4 hrs.
8-17-79/4 hr Calibrations l
ADS Trip System "A" Logic 4-14-76/4 hrs.
4-14-77/4 hrs.
4-11-78/4 hrs.
4-11-79/4 hrs Functicnal Test and 10-14-76/4 hrs.
10-11-77/4 hrs.
10-16-78/4 hrs.
11-8-79/4 hrs Calibration ADS Trip System "B" Logic 4-14-76/4 hrs.
4-14-77/4 hrs.
4-11-78/4 hrs.
4-11-79/4 hrs Functional Test and 10-14-76/4 hrs.
10-11-77/4 hrs.
10-16-78/4 hrs, 11-8-79/4 hrs Calibration PREVENTIVE MAINTENANCE
.None
1 of 2 ONS DATE OUT/ DURATION 1-16-80/4 hrs.
7-15-80/4 hrs.
3-4-80/4 hrs.
9-24-80/4 hrs.
5-28-80/8 hrs.
s.
12-7-80/8 hrs.
I l
2-14-80/4 hrs.
8-13-80/4 hrs.
l 2-14-80/4 hrs.
8-13-80/4 hrs.
3-26-80/4 hrs.
10-15-80/4 hrs.
4-8-80/4 hrs.
10-15-80/4 hrs.
Page 2 of 2 Alternate Testing Tech. Specs. require the ADS Logic Tests to be done prior to taking the llPCI system out of service for maintenance when it is required to be operable. These are the only ECC system logic tests required for alternate testing. Outage dates correspond to HPCI system outage dates addressed in our original submittal.
Date Out/ Duration 5-12-76/8 hours 6-17-76/8 hours 10-12-76/8 hours 2-9-77/8 hours 11-8-77/8 hours 4-25-78/8 hours 3-26-80/8 hours i
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