ML070660619

Draft Request for Additional Information Hope Creek EPU Grp 5

ML070660619
Person / Time
Site:	Hope Creek
Issue date:	02/20/2007
From:	Hoch J NRC/NRR/ADRO/DORL/LPLI-2
To:	Duke P Public Service Enterprise Group
SHea J, 415-1388, NRR/DLPM
References
TAC MD3002
Download: ML070660619 (4)

Text

Paul, Attached is the fifth group of Draft RAI's for the Hope Creek EPU. The RAI's are from the Component Performance and Testing Branch (CPTB). These RAI's are only on safety-related pumps and values and mechanical equipment environmental qualification. Please let me know when would be a good time for a conference call with this group.

Joseph A. Hoch Physical Scientist U.S. Nuclear Regulatory Commission NRR/DORL/LPL1-2 301-415-3635 jah6@nrc.gov

Mail Envelope Properties (45DB0931.41B : 2 : 9798)

Subject:

Fifth Group of Draft Hope Creek RAI's Creation Date 02/20/2007 9:44:01 AM From: Joseph Hoch Created By: JAH6@nrc.gov Recipients nrc.gov OWGWPO01.HQGWDO01 TWA CC (Thomas Alexion) nrc.gov OWGWPO03.HQGWDO01 HKC CC (Harold Chernoff) nrc.gov TWGWPO02.HQGWDO01 JJS CC (James Shea) pseg.com Paul.Duke (Paul.Duke@pseg.com)

Post Office Route OWGWPO01.HQGWDO01 nrc.gov OWGWPO03.HQGWDO01 nrc.gov TWGWPO02.HQGWDO01 nrc.gov pseg.com Files Size Date & Time MESSAGE 977 02/20/2007 9:44:01 AM DRAFT RAI5.wpd 18110 02/20/2007 9:42:19 AM Options Expiration Date: None Priority: Standard ReplyRequested: No Return Notification: None Concealed

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"DRAFT RAI's" REQUEST FOR ADDITIONAL INFORMATION ON THE HOPE CREEK GENERATING STATION, EXTENDED POWER UPRATE TAC NO. MD3002 This e-mail aims solely to prepare you and others for the requested conference call. It does not formally request for information, nor does it convey a formal NRC staff position.

12) Component and Performance and Testing Branch (CPTB) 12.1. The licensee is requested to discuss the plans to implement the Inservice Testing (IST)

Program for Hope Creek that incorporates appropriate changes in light of applicable EPU operating conditions. In particular, the licensee is requested to discuss with examples its evaluation of the impact of EPU conditions on the performance of safety-related pumps, power-operated valves, check valves, safety or relief valves, including consideration of changes in ambient conditions and power supplies (as applicable), and dynamic restraints; and to indicate any resulting component or support modifications, or adjustments to the IST Program, resulting from that evaluation.

12.2. Section 4.1.4, Generic Letter 89-10 Program, of NEDC-33076P (Revision 2, August 2006), Safety Analysis Report for Hope Creek Constant Pressure Power Uprate, provided as Attachment 4 to the licensees submittal dated September 18, 2006, states that process parameters of temperature, pressure, and flow for motor-operated valves (MOVs) within the scope of Generic Letter (GL) 89-10, Safety-Related Motor-Operated Valve Testing and Surveillance, were reviewed; and minor changes were identified as a result of EPU conditions. The licensee states that MOV calculations will be revised as necessary. The licensee is requested to discuss with examples its evaluation of safety-related MOVs within the programs established in response to GL 89-10 and GL 96-05, Periodic Verification of Design-Basis Capability of Safety-Related Motor-Operated Valves, at Hope Creek for the potential impact from EPU operation, including the impact of increased process flows on operating requirements and increased ambient temperature on motor output.

12.3. In Section 4.1.4 of NEDC-33076P, the licensee states that the effect of the EPU on the potential for pressure locking and thermal binding under GL 95-07, Pressure Locking and Thermal Binding of Safety-Related Power-Operated Gate Valves, was reviewed.

The licensee is requested to discuss with examples its evaluation of safety-related power-operated gate valves in light of any changes in ambient temperature on the potential for pressure locking or thermal binding resulting from EPU operation.

12.4. In Section 4.1.4 of NEDC-33076P, the licensee states the process parameters of temperature, pressure, and flow for air-operated valves (AOVs) were reviewed, and no changes to the functional requirements of any AOVs were identified. The licensee is requested to discuss with examples its evaluation of safety-related AOVs (and solenoid-operated valves, as applicable) for potential impact from EPU operation.

12.5. Section 10.3, Environmental Qualification, of NEDC-33076P indicates that safety-related components are required to be qualified for the environment in which they are required

to operate. In Section 10.3.2, Mechanical Equipment with Non-Metallic Components, the licensee states that the reevaluation of safety-related mechanical equipment with non-metallic components identify some equipment potentially affected by EPU conditions that were resolved by reanalysis. The licensee is requested to identify (1) the non-metallic components in safety-related mechanical equipment; (2) applicable environmental conditions; (3) required operating life; (4) capabilities of the non-metallic components; (5) basis for the environmental qualification of mechanical equipment; and (6) surveillance and maintenance program to be developed to ensure functionality during their design life.

12.6. In Section 10.3.3, Mechanical Component Design Qualification, of NEDC-33076P, the licensee states that mechanical design of equipment/components in certain systems is affected by operation at EPU conditions due to slightly increased temperatures and, in some cases, flow. The licensee states that the revised operating conditions do not significantly affect the cumulative usage fatigue factors of mechanical components. The licensee states that the increased fluid induced loads on safety-related components and supports are insignificant. The licensee is requested to (1) discuss the environmental qualification methods and standards applied to mechanical equipment (including pumps, power-operated valves, safety-relied valves, and check valves) and their supports; (2) provide examples of the increased temperatures, flows, and loads resulting from EPU conditions to demonstrate that the impact is insignificant; and (3) describe the surveillance and maintenance program for mechanical equipment to ensure functionality during their design life.