ML13032A126

Email from J. Ambrosini to James Kim: Millstone UHS Current Status

ML13032A126
Person / Time
Site:	Millstone
Issue date:	08/16/2012
From:	Josephine Ambrosini NRC/RGN-I/DRP/PB5
To:	Bellamy R, James Kim, James Krafty, Thomas Setzer Division of Operating Reactor Licensing, NRC/RGN-I/DRP/PB5
References
FOIA/PA-2013-0045
Download: ML13032A126 (2)

Text

Setzer, Thomas From: Ambrosini, Josephine Sent: Thursday, August 16, 2012 1:44 PM To: Kim, James; Krafty, James; Setzer, Thomas; Bellamy, Ronald Subject; RE: Millstone UHS Current Status (8/16112)

Thanks Jim.

We've heard they are leaning towards Unit 2 restart option #2, with the earliest projected startup date being Tuesday, August 21. No formal decision has been made to restart at this time.

From: Kim, James Sent: Thursday, August 16, 2012 1:31 PM To: Ambrosini, Josephine; Krafty, James; Setzer, Thomas; Bellamy, Ronald

Subject:

FW: Millstone UHS Current Status (8/16/12)

FYI From: Kim, James Sent: Thursday, August 16, 2012 1:13 PM To: Wilson, George Cc: Pickett, Douglas; Coffin, Stephanie; Poole, Justin

Subject:

Millstone UHS Current Status (8/16/12)

Based on a phone call with the Millstone licensing manager, Bill Bartron on 8/16/12:

Current Status of UHS Water Temperature:

Unit 2 - 73.25°F Unit 3 - 71.7°F Restart of Unit 2 Options:

1) Conservative Approach - Restart on or after 9/10/12 based on historical weather data and projections.

2) Less Conservative but high reliability - Restart ifthe 24-Hr avg. temperature is at or below 73°F for 3 consecutive days with 10 days projection of no significant UHS temperature increase.

Ifthe UHS temperature gets near the TS limit, then the following path forward is proposed:

Unit 3: 1) NOED

2) One-Time Emergency Amendment to increase the temperature limit from 75 0 F to 770 F for a period of 4-8 weeks.

In discussion between Millstone and ISO New England, there would be a significant impact on the grid stability and electricity demand if both Units 2 and 3 were to shutdown. And this event may meet the NOED criteria.

Unit 2: Exigent Amendment to increase the temperature limit from 75°F to 770 F for a period of 4-8 weeks. Unit 2 is currently in Mode 5 and the emergency amendment criteria may not apply.

Millstone is currently working on the above 3 documents just in case, ifthe weather conditions deteriorate and preparation of these 3 documents (NOED and Emergency Amd. for Unit 3 & Exigent Amd for Unit 2) will be completed early next week (Monday or Tuesday).

Bill Bartron wants to have a phone call on Monday (8/20) to discuss any updates on the UHS issues.

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Thanks Jim Kim 2