ML102930282

Email, Request for Additional Information Generic Letter 2008-01, Managing Gas Accumulation in Emergency Core Cooling, Decay Heat Removal, and Containment Spray Systems

ML102930282
Person / Time
Site:	River Bend
Issue date:	10/20/2010
From:	Wang A Plant Licensing Branch IV
To:	Burmeister B, Lorfin D, Williamson D Entergy Operations
Wang, A B, NRR/DORL/LPLIV, 415-1445
References
GL-08-001, TAC MD7870
Download: ML102930282 (4)

Text

From: Wang, Alan Sent: Wednesday, October 20, 2010 10:39 AM To: BURMEISTER, BARRY M; David Lorfing (DLorfin@entergy.com); WILLIAMSON, DANNY H Cc: Lent, Susan; Burkhardt, Janet

Subject:

River Bend Station GL 2008-01 Request for Additional Information (TAC No.

MD7870)

Barry and Dave, By letters dated May 15, 2008, and October 14, 2008, Entergy Operations, Inc, the licensee for the River Bend Station Unit 1, provided responses to Generic Letter (GL) 2008-01, Managing Gas Accumulation In Emergency Core Cooling, Decay Heat Removal, And Containment Spray Systems (Agencywide Documents Access & Management System (ADAMS) Accession No. ML081410456 and ML082950483, respectively).

The U.S. Nuclear Regulatory Commission (NRC) staff has determined that the following additional information is needed to determine that the licensee has acceptably demonstrated that the subject systems are in compliance with the current licensing and design bases and applicable regulatory requirements, and that suitable design, operational, and testing control measures are in place for maintaining this compliance as stated in GL 2008-01. This request was discussed with Danny Williamson of your staff on October 20, 2010, and it was agreed that a response would be provided within 45 days of receipt of this request. 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.

Reference 1 provided guidance on NRC staff expectations for the GL 2008-01 responses which is generally consistent with Nuclear Energy Institute (NEI) guidance provided to industry in Reference 2 as clarified in later NEI communications. Please refer to Reference 1 regarding responses to the following RAIs:

1. Discuss monitoring of pump operation in all modes and specialized monitoring of appropriate plant parameters during shutdown operations, including control of reactor vessel (RV) water level.

2. In several instances in the submittal, the licensee states as a corrective action, write Condition Report if significant air is vented. Please discuss what is meant by significant air.

3. Discuss re-performance of ultrasonic testing (UT) or venting at locations where gas may accumulate during venting at other locations to (1) verify gas was removed after venting and (2) to ensure gas was not transported into a high point that was previously found to be gas-free.

4. Discuss measures to guard against gas intrusion because of system realignments, incorrect maintenance procedures, or other evolutions.

5. Discuss the control and revision of work packages due to change in maintenance work scope, including review and reauthorization of the package and any new temporary procedures.

6. Training was not identified in the GL 2008-01 (Reference 3) but is considered to be a necessary part of applying procedures and other activities when addressing the issues identified in the GL as the licensee has recognized. Provide a brief description of training.

REFERENCES 1 Ruland, William H., Preliminary Assessment of Responses to Generic Letter 2008-01, Managing Gas Accumulation in emergency Core Cooling, Decay Heat Removal, and Containment Spray Systems, and Future NRC Staff Review Plans, NRC letter to James H. Riley, Nuclear Energy Institute, ML091390637, May 28, 2009.

2 Riley, James H., Generic Letter (GL) 2008-01, Managing Gas Accumulation in Emergency Core Cooling, Decay Heat Removal, and Contain Spray Systems Evaluation and 3 Month Response Template, Letter to Administrative Points of Contact from Director, Engineering, Nuclear Generation Division, Nuclear Energy Institute, Enclosure 2, Generic Letter 2008-01 Response Guidance, ML093070557, March 20, 2008.

3 Case, Michael J., NRC Generic Letter 2008-01: Managing Gas Accumulation in Emergency Core Cooling, Decay Heat Removal, and Containment Spray Systems, Letter from Director, Division of Policy and Rulemaking, Office of Nuclear Regulation, NRC, ML072910759, January 11, 2008.

4 Roberts, Jerry C., Nine-Month Response to NRC Generic Letter 2008-01, Letter to Document Control Desk, NRC, from Director, Nuclear Safety Assurance, Entergy Operations, Inc, ML082950483, October 14, 2008.

5 Revision 2 to NRC Staff Criteria for Gas Movement in Suction Lines and Pump Response to Gas, ML090900136, March 26, 2009.

Alan Wang Project Manager (River Bend Station)

Nuclear Regulatory Commission Division of Operating Reactor Licensing E-mail Properties Mail Envelope Properties (C0A338EE37A11447B136119705BF9A3F8F4D3568B5)

Subject:

River Bend Station GL 2008-01 Request for Additional Information (TAC No. MD7870)

Sent Date: 10/20/2010 10:38:36 AM Received Date: 10/20/2010 10:38:36 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 14672 10/20/2010 Options Expiration Date:

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