ML071840387: Difference between revisions
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{{#Wiki_filter:From: Siva | {{#Wiki_filter:From: Siva Lingam To: gary.D.Miller@Dom.com Date: 7/3/2007 1:45:17 PM | ||
==Subject:== | ==Subject:== | ||
Re: SURRY RAI | Re: SURRY RAI RESPONSE Attached please find additional RAIs Andrew wants to discuss with a conference call. Please give me a call. | ||
Surry Nuclear Station Location: O8-D5 Mail Stop: O8-G9 Telephone: 301-415-1564 Fax: 301-415-1222 E-mail address: spl@nrc.gov>>> Andrew Howe 7/3/2007 1:37 PM >>>I have reviewed Surry's 6/28 response to APLA's RAI. Some additional clarifications are still required, and perhaps a phone call might be appropriate: | Siva P. Lingam Project Manager (NRR/DORL/LPL2-1) | ||
Surry Nuclear Station Location: O8-D5 Mail Stop: O8-G9 Telephone: 301-415-1564 Fax: 301-415-1222 E-mail address: spl@nrc.gov | |||
6/5/07 RAI | >>> Andrew Howe 7/3/2007 1:37 PM >>> | ||
I have reviewed Surry's 6/28 response to APLA's RAI. Some additional clarifications are still required, and perhaps a phone call might be appropriate: | |||
a - Is control room abandonment for high temperature conditions proceduralized and trained, and what is the cue(s) for abandonment? | 6/5/07 RAI a - Is control room abandonment for high temperature conditions proceduralized and trained, and what is the cue(s) for abandonment? Is the control room equipment qualified up to the temperature at which abandonment occurs, or are equipment failures possible due to high temperatures prior to abandonment? | ||
b - Why is RCP seal integrity not a requirement for a remote safe shutdown? | b - Why is RCP seal integrity not a requirement for a remote safe shutdown? | ||
c - Is a long term AFW supply available to maintain hot standby conditions without transition to cold shutdown and RHR cooling? | c - Is a long term AFW supply available to maintain hot standby conditions without transition to cold shutdown and RHR cooling? | ||
d - What is changed in the ESGRs such that less cooling is required depending upon the control staff location? | d - What is changed in the ESGRs such that less cooling is required depending upon the control staff location? | ||
e - What probability is used for successful transfer to the ASP, and what is the basis for that probability? | e - What probability is used for successful transfer to the ASP, and what is the basis for that probability? | ||
f - Would the nonsafety chillers in fact be available and used rather than control room abandonment (i.e., is this a conservative assumption, or does it reflect actual plant limitations)? | f - Would the nonsafety chillers in fact be available and used rather than control room abandonment (i.e., is this a conservative assumption, or does it reflect actual plant limitations)? | ||
Andrew J Howe USNRC - Office of Nuclear Reactor Regulation Division of Risk Assessment 301-415-3078 CC: Andrew Howe | |||
Mail Envelope Properties (468A8B2D.529 : 13 : 35786) | |||
==Subject:== | ==Subject:== | ||
Re: SURRY RAI | Re: SURRY RAI RESPONSE Creation Date 7/3/2007 1:45:17 PM From: Siva Lingam Created By: SPL@nrc.gov Recipients Action Date & Time Dom.com Transferred 7/3/2007 1:45:52 PM gary.D.Miller (gary.D.Miller@Dom.com) nrc.gov OWGWPO04.HQGWDO01 Delivered 7/3/2007 1:45:24 PM AJH1 CC (Andrew Howe) Opened 7/3/2007 1:46:17 PM Post Office Delivered Route Dom.com OWGWPO04.HQGWDO01 7/3/2007 1:45:24 PM nrc.gov Files Size Date & Time MESSAGE 2835 7/3/2007 1:45:17 PM Options Auto Delete: No Expiration Date: None Notify Recipients: Yes Priority: Standard ReplyRequested: No Return Notification: None Concealed | ||
No Expiration Date: | |||
None Notify Recipients: | |||
Yes Priority:Standard ReplyRequested: | |||
No Return Notification: | |||
None Concealed | |||
==Subject:== | ==Subject:== | ||
No Security: Standard To Be Delivered: Immediate Status Tracking: Delivered & Opened}} | |||
No Security:Standard To Be Delivered:Immediate Status Tracking:Delivered & Opened}} | |||
Revision as of 04:52, 23 November 2019
| ML071840387 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 07/03/2007 |
| From: | Siva Lingam NRC/NRR/ADRO/DORL/LPLII-1 |
| To: | Geoffrey Miller Dominion |
| Lingam, Siva NRR/DORL 415-1564 | |
| References | |
| TAC MD4622, TAC MD4623 | |
| Download: ML071840387 (2) | |
Text
From: Siva Lingam To: gary.D.Miller@Dom.com Date: 7/3/2007 1:45:17 PM
Subject:
Re: SURRY RAI RESPONSE Attached please find additional RAIs Andrew wants to discuss with a conference call. Please give me a call.
Siva P. Lingam Project Manager (NRR/DORL/LPL2-1)
Surry Nuclear Station Location: O8-D5 Mail Stop: O8-G9 Telephone: 301-415-1564 Fax: 301-415-1222 E-mail address: spl@nrc.gov
>>> Andrew Howe 7/3/2007 1:37 PM >>>
I have reviewed Surry's 6/28 response to APLA's RAI. Some additional clarifications are still required, and perhaps a phone call might be appropriate:
6/5/07 RAI a - Is control room abandonment for high temperature conditions proceduralized and trained, and what is the cue(s) for abandonment? Is the control room equipment qualified up to the temperature at which abandonment occurs, or are equipment failures possible due to high temperatures prior to abandonment?
b - Why is RCP seal integrity not a requirement for a remote safe shutdown?
c - Is a long term AFW supply available to maintain hot standby conditions without transition to cold shutdown and RHR cooling?
d - What is changed in the ESGRs such that less cooling is required depending upon the control staff location?
e - What probability is used for successful transfer to the ASP, and what is the basis for that probability?
f - Would the nonsafety chillers in fact be available and used rather than control room abandonment (i.e., is this a conservative assumption, or does it reflect actual plant limitations)?
Andrew J Howe USNRC - Office of Nuclear Reactor Regulation Division of Risk Assessment 301-415-3078 CC: Andrew Howe
Mail Envelope Properties (468A8B2D.529 : 13 : 35786)
Subject:
Re: SURRY RAI RESPONSE Creation Date 7/3/2007 1:45:17 PM From: Siva Lingam Created By: SPL@nrc.gov Recipients Action Date & Time Dom.com Transferred 7/3/2007 1:45:52 PM gary.D.Miller (gary.D.Miller@Dom.com) nrc.gov OWGWPO04.HQGWDO01 Delivered 7/3/2007 1:45:24 PM AJH1 CC (Andrew Howe) Opened 7/3/2007 1:46:17 PM Post Office Delivered Route Dom.com OWGWPO04.HQGWDO01 7/3/2007 1:45:24 PM nrc.gov Files Size Date & Time MESSAGE 2835 7/3/2007 1:45:17 PM Options Auto Delete: No Expiration Date: None Notify Recipients: Yes Priority: Standard ReplyRequested: No Return Notification: None Concealed
Subject:
No Security: Standard To Be Delivered: Immediate Status Tracking: Delivered & Opened