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Category:Accident Sequence Precursor (ASP) Analysis
MONTHYEARML20168A5512020-06-16016 June 2020 Final ASP Analysis - Haddam Neck (LER 213-79-010) ML20168A5502020-06-16016 June 2020 Final ASP Analysis - Haddam Neck (LER 213-76-014) ML20149K3482020-05-28028 May 2020 Final ASP Analysis - Haddam Neck (LER 213-81-003) ML20149K3472020-05-28028 May 2020 Final ASP Analysis - Haddam Neck (LER 213-80-004) ML20135G9622020-05-14014 May 2020 Final ASP Analysis - Haddam Neck (LER 213-96-024) ML20135G9612020-05-14014 May 2020 Final ASP Analysis - Haddam Neck (LER 213-96-016) ML20135G9602020-05-14014 May 2020 Final ASP Analysis - Haddam Neck (LER 213-95-010) ML20135G9592020-05-14014 May 2020 Final ASP Analysis - Haddam Neck (LER 213-94-004) ML20135G9572020-05-14014 May 2020 Final ASP Analysis - Haddam Neck (LER 213-90-008) 2020-06-16
[Table view] Category:Final
MONTHYEARML20168A5512020-06-16016 June 2020 Final ASP Analysis - Haddam Neck (LER 213-79-010) ML20168A5502020-06-16016 June 2020 Final ASP Analysis - Haddam Neck (LER 213-76-014) ML20149K3482020-05-28028 May 2020 Final ASP Analysis - Haddam Neck (LER 213-81-003) ML20149K3472020-05-28028 May 2020 Final ASP Analysis - Haddam Neck (LER 213-80-004) ML20135G9622020-05-14014 May 2020 Final ASP Analysis - Haddam Neck (LER 213-96-024) ML20135G9612020-05-14014 May 2020 Final ASP Analysis - Haddam Neck (LER 213-96-016) ML20135G9602020-05-14014 May 2020 Final ASP Analysis - Haddam Neck (LER 213-95-010) ML20135G9592020-05-14014 May 2020 Final ASP Analysis - Haddam Neck (LER 213-94-004) ML20135G9572020-05-14014 May 2020 Final ASP Analysis - Haddam Neck (LER 213-90-008) 2020-06-16
[Table view] |
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B-40 valves (CH-SOV-242 and -242B) to correct previously identified single failure concerns.
The solenoid valves do not have independent control. They are deenergized to the closed position when their respective VCT suction isolation valves (CH-MOV-257 and CH MOV -257B) are closed. On a safety injection actuation signal the following automatic actions take place:
1 . Both charging pumps start.
- 2. CH-MOV-257 and CH-MOV-257B close.
- 3. RWST suction isolation valves BA-MOV-32 and BA-MOV-373 open.
The charging pump suction vent line arrangement. is shown below.
Figure removed during SUNSI review.
ASP Modeling Assumptions and Approach Installation and later discovery of the leaking solenoid valves occurred during a single