The NRC began its first reassessment of PWR sump and BWR suction strainer performance in 1979. The first reassessment (including all technical and regulatory actions) was completed in 1985.
In 1992, the NRC started a second reassessment of BWR suction strainer performance and completed the reassessment (including all technical and regulatory actions) in 2000.
In 1996, the NRC started a second reassessment of PWR sump performance and that reassessment is ongoing.
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See the following, for a graphical presentation of the information provided in the table below.
- Historical Timeline of NRC Regulatory Actions
- Historical Timeline of Events and NRC Technical Reports
|Years||Regulatory Activity||Event||Technical Activity|
|1970-1975||Regulatory Guide 1.82|
|1981-1985||Regulatory Guide 1.82, Revision 1|
Information Notice 88-28
Information Notice 89-77
Information Notice 90-07
Information Notice 92-71
Information Notice 92-85
Information Notice 93-34
Information Notice 93-02
Temporary Instruction 2515/125
Information Notice 94-57
Information Notice 95-06
Information Notice 95-47
|Head loss tests
Debris generation tests
Information Notice 96-10
Regulatory Guide 1.82, Revision 2
Information Notice 96-27
Information Notice 96-55
Information Notice 96-59
Generic Letter 96-03
Generic Letter 97-04
Generic Letter 98-04
Regulatory Guide 1.54, Revision 1
|LaSalle||Debris transport tests
Debris erosion tests