ML101330272: Difference between revisions

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| number = ML101330272
| number = ML101330272
| issue date = 05/13/2010
| issue date = 05/13/2010
| title = River Bend, Unit 1, Request for Additional Information Regarding 24 Month Cycle
| title = Request for Additional Information Regarding 24 Month Cycle
| author name = Wang A B
| author name = Wang A
| author affiliation = NRC/NRR/DORL/LPLIV
| author affiliation = NRC/NRR/DORL/LPLIV
| addressee name = Burmeister B M, Lorfing C
| addressee name = Burmeister B, Lorfing C
| addressee affiliation = Entergy Operations, Inc
| addressee affiliation = Entergy Operations, Inc
| docket = 05000458
| docket = 05000458
Line 18: Line 18:


=Text=
=Text=
{{#Wiki_filter:From: Wang, Alan Sent: Thursday, May 13, 2010 9:48 AM To: BURMEISTER, BARRY M; David Lorfing (DLorfin@entergy.com) Cc: WILLIAMSON, DANNY H; Lent, Susan; Burkhardt, Janet  
{{#Wiki_filter:From:                   Wang, Alan Sent:                   Thursday, May 13, 2010 9:48 AM To:                     BURMEISTER, BARRY M; David Lorfing (DLorfin@entergy.com)
Cc:                     WILLIAMSON, DANNY H; Lent, Susan; Burkhardt, Janet


==Subject:==
==Subject:==
River Bend Station Request for Additional Information (RAI) Regarding 24 Month Cycle (ME1872)
River Bend Station Request for Additional Information (RAI) Regarding 24 Month Cycle (ME1872)
Barry and Dave,   By letter dated August 9, 2009 (Agencywide Documents Access & Management System (ADAMS) Accession No. ML092470152), Entergy Operations, Inc. (Entergy, the licensee), submitted a license amendment request (LAR) to support 24-month fuel cycles at the River Bend Station. Specifically, the change addresses certain Technical Specification Surveillance Requirement frequencies that are specified as 18 months by revising them to 24 months.
Barry and Dave, By letter dated August 9, 2009 (Agencywide Documents Access & Management System (ADAMS) Accession No. ML092470152), Entergy Operations, Inc. (Entergy, the licensee), submitted a license amendment request (LAR) to support 24-month fuel cycles at the River Bend Station. Specifically, the change addresses certain Technical Specification Surveillance Requirement frequencies that are specified as 18 months by revising them to 24 months.
The NRC staff has determined that the following additional information is needed to complete its review of the subject LAR for RBS. This request was discussed with Barry Burmeister of your staff on May 13, 2010, and it was agreed that a response would be provided by June 4, 2010. If circumstances result in the need to revise the requested response date, please contact me at (301) 415-1445 or via e-mail at Alan.Wang@nrc.gov. This amendment request addresses certain TS Surveillance Requirement (SR) frequencies that are specified as "18 months" by revising them to "24 months" in accordance with the guidance provided in NRC Generic Letter (GL) 91-04. In addition the amendment also proposes revised degraded voltage setpoint allowable values in TS Table 3.3.8.1-1. The following RAIs pertain to the proposed degraded voltage relay setpoint allowable values:  
The NRC staff has determined that the following additional information is needed to complete its review of the subject LAR for RBS. This request was discussed with Barry Burmeister of your staff on May 13, 2010, and it was agreed that a response would be provided by June 4, 2010. If circumstances result in the need to revise the requested response date, please contact me at (301) 415-1445 or via e-mail at Alan.Wang@nrc.gov.
: 1. Confirm whether the undervoltage protective schemes for the loss of voltage (LOV) and the degraded voltage relay (DVR) are not bypassed during emergency diesel generator (EDG) operation and provide a copy of logic and/or schematic diagrams reflecting such relay bypass scheme. If they are not bypassed, explain that the proposed TS DVR setpoint allowable values would not result in unnecessary actuation of the relay when EDG is supplying power at the minimum TS required voltage to the safety related bus.  
This amendment request addresses certain TS Surveillance Requirement (SR) frequencies that are specified as 18 months by revising them to 24 months in accordance with the guidance provided in NRC Generic Letter (GL) 91-04. In addition the amendment also proposes revised degraded voltage setpoint allowable values in TS Table 3.3.8.1-1. The following RAIs pertain to the proposed degraded voltage relay setpoint allowable values:
: 2. Provide a summary of the calculation that demonstrates that all safety related equipment will be protected based on the proposed DVR setpoint allowable values in TS Table 3.3.8.1-1. The NRC staff also requests the licensee to provide a detailed discussion of the limiting or bounding component used to determine the proposed TS DVR setpoint allowable values.
: 1. Confirm whether the undervoltage protective schemes for the loss of voltage (LOV) and the degraded voltage relay (DVR) are not bypassed during emergency diesel generator (EDG) operation and provide a copy of logic and/or schematic diagrams reflecting such relay bypass scheme. If they are not bypassed, explain that the proposed TS DVR setpoint allowable values would not result in unnecessary actuation of the relay when EDG is supplying power at the minimum TS required voltage to the safety related bus.
E-mail Properties Mail Envelope Properties (C0A338EE37A11447B136119705BF9A3F65521E1CC6)  
: 2. Provide a summary of the calculation that demonstrates that all safety related equipment will be protected based on the proposed DVR setpoint allowable values in TS Table 3.3.8.1-1. The NRC staff also requests the licensee to provide a detailed discussion of the limiting or bounding component used to determine the proposed TS DVR setpoint allowable values.
E-mail Properties
 
Mail Envelope Properties (C0A338EE37A11447B136119705BF9A3F65521E1CC6)


==Subject:==
==Subject:==
River Bend Station Request for Additional Information (RAI) Regarding 24 Month Cycle (ME1872)  
River Bend Station Request for Additional Information (RAI) Regarding 24 Month Cycle (ME1872)
 
Sent Date:     5/13/2010 9:51:32 AM Received Date:       5/13/2010 9:51:32 AM From:           Wang, Alan Created By:       Alan.Wang@nrc.gov Recipients:
Sent Date:       5/13/2010 9:51:32 AM Received Date:       5/13/2010 9:51:32 AM From:               Wang, Alan  
 
Created By:         Alan.Wang@nrc.gov  
 
Recipients:
BBURMEI@entergy.com (BURMEISTER, BARRY M)
BBURMEI@entergy.com (BURMEISTER, BARRY M)
Tracking Status: None DLorfin@entergy.com (David Lorfing (DLorfin@entergy.com))
Tracking Status: None DLorfin@entergy.com (David Lorfing (DLorfin@entergy.com))
Line 41: Line 40:
Tracking Status: None Susan.Lent@nrc.gov (Lent, Susan)
Tracking Status: None Susan.Lent@nrc.gov (Lent, Susan)
Tracking Status: None Janet.Burkhardt@nrc.gov (Burkhardt, Janet)
Tracking Status: None Janet.Burkhardt@nrc.gov (Burkhardt, Janet)
Tracking Status: None  
Tracking Status: None Post Office:
 
HQCLSTR02.nrc.gov Files         Size     Date & Time MESSAGE         8587     5/13/2010 Options Expiration Date:
Post Office:
Priority:               olImportanceNormal ReplyRequested:        False Return Notification:     False Sensitivity:     olNormal Recipients received:}}
HQCLSTR02.nrc.gov  
 
Files               Size       Date & Time  
 
MESSAGE       8587       5/13/2010  
 
Options Expiration Date:
Priority:                       olImportanceNormal ReplyRequested:        False Return Notification:       False  
 
Sensitivity:         olNormal Recipients received:}}

Latest revision as of 19:18, 13 November 2019

Request for Additional Information Regarding 24 Month Cycle
ML101330272
Person / Time
Site: River Bend Entergy icon.png
Issue date: 05/13/2010
From: Wang A
Plant Licensing Branch IV
To: Burmeister B, Lorfing C
Entergy Operations
Wang, A B, NRR/DORL/LPLIV, 415-1445
References
TAC ME1872
Download: ML101330272 (1)
v • d • e


Text

From: Wang, Alan Sent: Thursday, May 13, 2010 9:48 AM To: BURMEISTER, BARRY M; David Lorfing (DLorfin@entergy.com)

Cc: WILLIAMSON, DANNY H; Lent, Susan; Burkhardt, Janet

Subject:

River Bend Station Request for Additional Information (RAI) Regarding 24 Month Cycle (ME1872)

Barry and Dave, By letter dated August 9, 2009 (Agencywide Documents Access & Management System (ADAMS) Accession No. ML092470152), Entergy Operations, Inc. (Entergy, the licensee), submitted a license amendment request (LAR) to support 24-month fuel cycles at the River Bend Station. Specifically, the change addresses certain Technical Specification Surveillance Requirement frequencies that are specified as 18 months by revising them to 24 months.

The NRC staff has determined that the following additional information is needed to complete its review of the subject LAR for RBS. This request was discussed with Barry Burmeister of your staff on May 13, 2010, and it was agreed that a response would be provided by June 4, 2010. If circumstances result in the need to revise the requested response date, please contact me at (301) 415-1445 or via e-mail at Alan.Wang@nrc.gov.

This amendment request addresses certain TS Surveillance Requirement (SR) frequencies that are specified as 18 months by revising them to 24 months in accordance with the guidance provided in NRC Generic Letter (GL) 91-04. In addition the amendment also proposes revised degraded voltage setpoint allowable values in TS Table 3.3.8.1-1. The following RAIs pertain to the proposed degraded voltage relay setpoint allowable values:

1. Confirm whether the undervoltage protective schemes for the loss of voltage (LOV) and the degraded voltage relay (DVR) are not bypassed during emergency diesel generator (EDG) operation and provide a copy of logic and/or schematic diagrams reflecting such relay bypass scheme. If they are not bypassed, explain that the proposed TS DVR setpoint allowable values would not result in unnecessary actuation of the relay when EDG is supplying power at the minimum TS required voltage to the safety related bus.
2. Provide a summary of the calculation that demonstrates that all safety related equipment will be protected based on the proposed DVR setpoint allowable values in TS Table 3.3.8.1-1. The NRC staff also requests the licensee to provide a detailed discussion of the limiting or bounding component used to determine the proposed TS DVR setpoint allowable values.

E-mail Properties

Mail Envelope Properties (C0A338EE37A11447B136119705BF9A3F65521E1CC6)

Subject:

River Bend Station Request for Additional Information (RAI) Regarding 24 Month Cycle (ME1872)

Sent Date: 5/13/2010 9:51:32 AM Received Date: 5/13/2010 9:51:32 AM From: Wang, Alan Created By: Alan.Wang@nrc.gov Recipients:

BBURMEI@entergy.com (BURMEISTER, BARRY M)

Tracking Status: None DLorfin@entergy.com (David Lorfing (DLorfin@entergy.com))

Tracking Status: None DWILL21@entergy.com (WILLIAMSON, DANNY H)

Tracking Status: None Susan.Lent@nrc.gov (Lent, Susan)

Tracking Status: None Janet.Burkhardt@nrc.gov (Burkhardt, Janet)

Tracking Status: None Post Office:

HQCLSTR02.nrc.gov Files Size Date & Time MESSAGE 8587 5/13/2010 Options Expiration Date:

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

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