| Date |
Description |
|
12/18/2006
|
Letter from Christine King, EPRI, to Tanya Mensah, NRC, regarding PWR Fleet Survey MRP-139 Implementation Plans for Pressurizers - Revision 1
|
|
11/09/2006
|
Letter from King, C., to Mensah, T., concerning PWR fleet survey – MPR-139 implementations plan for pressurizers.
|
|
08/23/2006
|
Letter from Grobe, J., to Riley, J., concerning reporting of MPR-139 inspection findings.
|
|
03/29/2006
|
Letter from John A. Grobe, NRC, to Alex Marion, NEI, regarding teleconference between NRC Staff and NEI representatives concerning spring 2006 dissimilar metal butt welds inspection results.
|
|
03/02/2006
|
Letter from Grobe, J., to Marion, A., request for cooperation in ASME Code process to revise code requirements for inspection of dissimilar metal butt welds.
|
|
10/12/2005
|
Letter from Michael E. Mayfield, NRC, to Alex Marion, NEI, regarding questions & comments to MRP-139, “Primary System Piping Butt Weld Inspection and Evaluation Guidelines”.
|
|
07/27/2005
|
Letter from Alex Marion, NEI, regarding the Materials Reliability Program inspection plan for piping butt welds.
|
|
07/14/2005
|
Materials Reliability Program: Primary System Butt Weld Inspection and Evaluation Guideline (MPR-139).
|
|
10/19/2004
|
Materials Reliability Program: Probabilistic Risk Assessment of
Alloy 82/182 Piping Butt Welds (MRP 116NP)
|
|
07/31/2004
|
Materials Reliability Program: Alloy 82/182 Pipe Butt Weld Safety
Assessment for US PWR Plant Designs (MRP-113NP)
|
|
06/12/2003
|
MRP A600 ITG Butt Weld Working Group slides from public
meeting to discuss industry management of various materials degradation
issues
|
|
04/22/2003
|
Letter from Brian W. Sheron, NRC to Alex Marion, NEI,
regarding Pressurized Water Reactor (PWR) Materials Reliability Project
Interim Alloy 600 Safety Assessment for U.S. PWR Plants (MRP-44),
Part 1: Alloy 82/182 Pipe Butt Welds
|
|
06/14/2001
|
Letter from Dr. Brian Sheron, NRC, to Mr. Alex Marion,
NEI, regarding Staff Findings Regarding "PWR Materials Reliability
Project Interim Alloy 600 Safety Assessment for U.S. PWR Plants (MRP-44),
Part 1: Alloy 82/182 Pipe Butt Welds"
|
|
05/04/2001
|
Letter from Peter Wen, NRC, to Dr. Theodore Marston,
EPRI, regarding "Request for Withholding Information from Public
Disclosure, EPRI Letter of April 24, 2001."
|
|
04/27/2001
|
Letter from Mr. Alex Marion, NEI, to Dr. Brian Sheron,
NRC, regarding "PWR Reactor Piping and Head Penetrations,"
providing EPRI Report TP1001491 NP, Part 1, "PWR Materials Reliability
Project Interim Alloy 600 Safety Assessment for U.S. PWR Plants (MRP-44),
Part 1: Alloy 82/182 Pipe Butt Welds," April 2001
|
|
03/15/2001
|
NRC Special Inspection Team Report
|
|
02/20/2001
|
Safety Evaluation Report - WCAP-15615, "Integrity
Evaluation for Future Operation: Virgil C. Summer Nuclear Plant Reactor
Vessel Nozzle to Pipe Weld Regions" (TAC NO. MB0251)
|
|
02/09/2001
|
NRC Special Team Meeting with Summer Plant Officials
to Discuss Hot Leg Weld Crack Findings
|
|
01/02/2001
|
NRC Staff to Meet with Summer Plant Officials to Discuss
Pipe Repair Prior to Plant Restart
|
|
12/29/2000
|
WCAP-15615, Revision 0, "Integrity Evaluation
for Future Operation Virgil C. Summer Nuclear Plant: Reactor Vessel
Nozzle to Pipe Weld Regions;" (Non-Proprietary Class 3)
|
|
12/26/2000
|
Letter from SCE&G submitting copies of WCAP-15615,
"Integrity Evaluation for Future Operation Virgil C. Summer Nuclear
Plant: Reactor Vessel Nozzle to Pipe Weld Regions"
|
|
12/14/2000
|
Nuclear Energy Institute (NEI) letter to NRC: Reactor
Coolant Pipe Cracking Experience
|
|
11/16/2000
|
NRC Information Notice (2000-17), Supplement 1 - Crack
in Weld Area of Reactor Coolant System Hot Leg Piping at V. C. Summer
|
|
11/03/2000
|
NRC's expectations and information needs - V. C. Summer
crack in the weld area of the reactor coolant system
|
|
10/23/2000
|
NRC's request for information - V. C. Summer crack
in the weld area of the reactor coolant system
|
|
10/18/2000
|
NRC Information Notice (2000-17) - Crack in Weld Area
of Reactor Coolant System Hot Leg Piping at V.C. Summer
|
|
10/13/2000
|
Licensee Event Notification (#37423) - Initial discovery
of boron on the floor and identification of a 4"long hairline
crack
|
