ML12052A294

Email from M. Khanna, NRR to B. Pham, NRR Et Al. FW: North Anna - Unit 1 and 2 - After the Earthquake

ML12052A294
Person / Time
Site:	North Anna
Issue date:	09/13/2011
From:	Meena Khanna Office of Nuclear Reactor Regulation
To:	David Pelton, Bo Pham Office of Nuclear Reactor Regulation
References
FOIA/PA-2011-0357
Download: ML12052A294 (1)

Text

Craver, Patti From: Khanna, Meena Sent: Tuesday, Septem'ber 13, 2011 1:22 PM To: Pham, Bo; Pelton, David

Subject:

FW: North Anna--Unit 1 and 2--After the earthquake Importance: High From: Cheruvenki, Ganesh Sent: Tuesday, September 1 , 2011 12:54 PM To: Auluck, Rajender Cc: Medoff, James; Mitchell, Matthew; Khanna, Meena; Sheng, Simon

Subject:

North Anna--Unit 1 and 2--After the earthquake Importance: High

Raj, Here are the components that required TLAA evaluations in the North Anna LRA submittal. Further evaluation is needed for these components based on the new OBE and SSE design criteria. Meena Khanna's group will handle this evaluation.

Components-Metal Fatigue-Section of TLAA 4.3.1-ASME III Class 1 components 4.3.3-ANSI B31.1 PIPING 4.3.4-Environmentally assisted fatigue 4.7.1-Crane Load Cycle Limit 4.7.3-Leak before break 4.7.4-Spent fuel pool liner 4.7.5-Piping subsurface indications 4.7.6-Reactor coolant pump-Code Case N-481 Sections 4.3.2-RPV underclad cracking and 4.7.2-RC Pump Flywheel may be reviewed by Matt's group.

Ganesh 2501