ML103350535
| ML103350535 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 11/18/2010 |
| From: | Martin W SCANA Corp |
| To: | Rulemaking, Directives, and Editing Branch |
| References | |
| 75FR58444 00001, DG-1244 | |
| Download: ML103350535 (2) | |
Text
711 t2*.9 Mendiola, Doris From:
Sent:
To:
Subject:
MARTIN, WILLIE C JR [WMARTIN@scana.com]
Thursday, November 18, 2010 7:52 PM Rulemaking Comments DG-1244 7-f 1")
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VC Summer Comments: DG-1244
- 1. From page 3 "Plant operators should be aware of (I) the capability of the offsite power system to supply power during operation and (2) situations that can result in a loss of offsite power or inadequate voltage following a trip of the plant or other transmission contingencies (which could potentially degrade the offsite power supplies) identified by the grid operator. If the offsite power system cannot provide the requisite power in either situation, the licensee should declare the system inoperable and follow pertinent plant technical specification provisions."
Comment 1:
This item on page 3 seems to add a new criteria. Except for a station plant trip, the GDC and Standard Review Plan do NOT require that a single contingency not impact either offsite power source, they just require that it not impact BOTH offsite power sources.
- 2. From Page 9:
"The NPP operator should validate the accuracy and conservatism of the post-trip voltages predicted by the online grid analysis tool."
Comment 2:
How can the NPP operator possibly do this? We do not have the knowledge or tools to do this. We do have System Control (Transmission) evaluate the accuracy of their prediction of post trip voltage after each actual trip. But VCSNS cannot do this beforehand.
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Mendiolla, Doris From:
Sent:
To:
Subject:
Attachments:
Rulemaking Comments Monday, November 22, 2010 8:59 AM Mendiola, Doris FW: DG-1244 DG-1244 Does this comments belong to ADM?
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