ML101970436

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E-mail from R. Guzman to T. Darling Request for Additional Information - Extended Power Uprate LAR Standby Liquid Control System
ML101970436
Person / Time
Site: Nine Mile Point Constellation icon.png
Issue date: 01/12/2010
From: Richard Guzman
Division of Operating Reactor Licensing
To: Darling T
Constellation Energy Nuclear Group, Nine Mile Point
Guzman R, NRR/DORL, 415-1030
References
TAC ME1476
Download: ML101970436 (2)


Text

From:

Guzman, Richard Sent:

Tuesday, January 12, 2010 12:01 PM To:

Darling, Theresa H Cc:

Dosa, John J

Subject:

RE: NMP2 EPU Response to Component Performance and Testing RAI

Theresa, I'd like to schedule a 2nd teleconference with you to discuss the 12/23/09 RAI response to the Component Performance and Testing Review Branch (RAI-G questions).

Regarding the response to RAI G3, the last paragraph on page 29 of 31 in attachment 1 states:

"The combined margin of 73.6 psi is recognized to provide minimally sufficient margin for SLCS pump discharge valves, at both CLPT and EPU conditions. As such, the piping is being rerated and the relief valve set pressure increased to provide additional margin."

- we'd like to understand how the margin of 73.6 psi was determined

- also, we'd like to know what the SLCS relief valve discharge pressure is being reset to and when this is going to be done Please let me know when you can support a conference call. Wed or Thursday a.m., or anytime next Tuesday works for us.

Thanks, Rich Guzman Sr. Project Manager NRR/DORL US NRC 301-415-1030 Richard.Guzman@nrc.gov

>>> This e-mail and any attachments are confidential, may contain legal, professional or other privileged information, and are intended solely for the addressee. If you are not the intended recipient, do not use the information in this e-mail in any way, delete this e-mail and notify the sender. CEG-IP2 E-mail Properties Mail Envelope Properties (92E0E77F3622DA40B501E8D45083D5D95084990820)

Subject:

RE: NMP2 EPU Response to Component Performance and Testing RAI Sent Date: 1/12/2010 12:00:41 PM Received Date: 1/12/2010 12:00:00 PM From: Guzman, Richard

Created By: Richard.Guzman@nrc.gov Recipients:

Theresa.Darling@cengllc.com (Darling, Theresa H)

Tracking Status: None John.Dosa@cengllc.com (Dosa, John J)

Tracking Status: None Post Office:

HQCLSTR01.nrc.gov Files Size Date & Time MESSAGE 10748 1/12/2010 Options Expiration Date:

Priority: olImportanceNormal ReplyRequested: False Return Notification: False Sensitivity: olNormal Recipients received: