ML042670319
| ML042670319 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 03/03/2004 |
| From: | Alexion T NRC/NRR/DLPM/LPD4 |
| To: | David Bice Entergy Operations |
| Alexion T W, NRR/DLPM, 415-1326 | |
| Shared Package | |
| ML043570180 | List: |
| References | |
| Download: ML042670319 (4) | |
Text
Thoms Aexion - Re: Proposed EDP AOT Bases Wordig,T Page 1 i From:
To:
Date:
Subject:
Thomas Alexion BICE, DAVID B 3/3/04 8:18AM Re: Proposed EDG AOT Bases Wording
- Dave, Attached is the NRC-desired revision to Commitments 1, 2, and 9.
Tom
>> >BICE, DAVID B" <DBICE@entergy.com> 02/26/04 05:15PM >>>
- Tom, Attached are markups and clean pages for info only. Thanks.
David Bice ANO Licensing AtU n -3C~v
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Re: Proposed EDG AOT Bases Wording 3/3/04 8:18AM Thomas Alexion TWA@nrc.gov Recipients entergy.com DBICE (BICE, DAVID B)
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Delivered Pending Size 22199 1168 Date & Time 03/01/04 01:45PM 03/03/04 08:18AM No None Yes Standard No None No Standard Immediate Delivered & Opened
ANO-2 EDG COMMITMENTS (1. 2 AND 9 REVISED)
- 1.
The local area weather conditions will be evaluated prior to entering the extended EDG AOT for voluntary planned maintenance. An extended EDG AOT will not be entered for voluntary planned maintenance purposes if weather forecasts for the local area are predicting severe weather conditions that could affect the switchyard or offsite power supply during the AOT.
- 2.
The condition of the switchyard, offsite power supply, and the grid will be evaluated prior to entering the extended AOT for elective maintenance. An extended EDG AOT will not be entered to perform elective maintenance when grid stress conditions are high such as during extreme summer temperatures and/or high demand.
- 3.
No discretionary switchyard maintenance will be allowed. In addition, no discretionary maintenance will be allowed on the main, auxiliary, or startup transformers associated with the unit.
- 4.
No maintenance or testing that affects the reliability of the ANO-2 train associated with the OPERABLE EDG will be scheduled during the extended AOT. If any testing and maintenance activities must be performed while the extended AOT is in effect, a 10 CFR 50.65(a)(4) evaluation will be performed.
- 5.
The AACDG will be available as a backup to the inoperable EDG and will not be used for non-safety functions such as power peaking to the grid. After entering the extended AOT, the AACDG will be verified available every 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> and treated as protected equipment.
- 6.
ANO-1 personnel will be notified to ensure no elective maintenance activities will be scheduled on the ANO-1 EDGs and will be made aware of the dedication of the AACDG to ANO-2.
- 7.
The steam driven EFW pump will not be taken OOS for planned maintenance activities and will be treated as protected equipment.
- 8.
The system dispatcher will be contacted once per day and informed of the EDG status, along with the power needs of the facility.
- 9.
Should a severe weather warning be issued for the local area that could affect the switchyard or offsite power supply during the AOT, an operator will be available locally at the AACDG should local operation of the AACDG be required as a result of on-site weather-related damage.
- 10.
ANO-2 on-shift Operations crews will discuss and review appropriate normal and emergency operating procedures upon or prior to assuming the watch for the first time after having scheduled days off while the AOT is in effect.
- 11.
ANO-2 Operating crews will be briefed concerning the ANO-2 EDG activities, including compensatory measures established and the importance of promptly starting and aligning the AACDG following instruction of the ANO-2 Shift Manager upon the loss of
power event. This briefing will be performed upon or prior to assuming the watch for the first time after having scheduled days off while the AOT is in effect.
- 12.
During the EDG outage, ANO commits to control welding and transient combustibles and to establish continuous fire watches in the vicinity of the Turbine Building Switchgear (2A1/2A2/2A9).
- 13.
During the EDG outage, ANO commits to control welding and transient combustibles in the following areas: the transformer yard; the south switchgear room (SS/21 OO-Z); the cable spreading room (G/2098-L); intake structure (00/IS); diesel corridor (JJ/2109-U);
lower south electricalpiping penetration room (EE/2055SC); and Electrical Equipment Room (TT/2108-S).
- 14.
Prior to the EDG outage, ANO commits to provide in a crew brief to ANO-2 Operations personnel and ANO-1 fire brigade personnel refresher information related to fighting electrical fires and fires that may occur in the transformer yard. The crew brief will include relevant industry operating experience related to fires in these areas and will also include a discussion of equipment restoration.
- 15.
Prior to an EDG outage, the operability of the fire suppression in the transformer yard will be confirmed. This will be accomplished by verifying that surveillances are current and the system is not isolated. If the system is isolated, then fire hoses will be staged to the transformer yard area during the EDG maintenance outage.