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Category:Accident Sequence Precursor (ASP) Analysis
MONTHYEARML21068A0702021-03-24024 March 2021
Transmittal of Quad Cities Nuclear Power Station, Unit 2, Final Accident Sequence Precursor Report (Licensee Event Report 265-2020-002)
ML21029A3192021-02-18018 February 2021
Final Accident Sequence Precursor Analysis - Quad Cities Nuclear Power Station, Unit 2, Electromatic Relief Valve 3D Failed to Actuate Due to Out-of-Specification Plunger (LER 265-2020-002) - Precursor
ML20168A7192020-06-16016 June 2020
Final ASP Analysis - Quad Cities 2 (LER 265-75-035)
ML20168A7182020-06-16016 June 2020
Final ASP Analysis - Quad Cities 2 (LER 265-75-031)
ML20156A1462020-06-0404 June 2020
Final ASP Analysis - Quad Cities 2 (LER 265-80-032)
ML20156A1492020-06-0404 June 2020
Final ASP Analysis - Quad Cities 2 (LER 265-84-010)
ML20156A1482020-06-0404 June 2020
Final ASP Analysis - Quad Cities 2 (LER 265-82-017)
ML20156A1472020-06-0404 June 2020
Final ASP Analysis - Quad Cities 2 (LER 265-82-010)
ML20156A1442020-06-0404 June 2020
Final ASP Analysis - Quad Cities 1 (LER 254-84-014)
ML20135H3122020-05-14014 May 2020
Final ASP Analysis - Quad Cities 1 (LER 254-90-003)
ML20135H3132020-05-14014 May 2020
Final ASP Analysis - Quad Cities 1 (LER 254-92-004)
ML20135H3142020-05-14014 May 2020
Final ASP Analysis - Quad Cities 2 (LER 265-93-010)
ML20114E2002020-05-12012 May 2020
Final ASP Analysis - Quad Cities 2 (LER 265-01-001-01)
2021-03-24
[Table view]
Category:Final
MONTHYEARML21068A0702021-03-24024 March 2021
Transmittal of Quad Cities Nuclear Power Station, Unit 2, Final Accident Sequence Precursor Report (Licensee Event Report 265-2020-002)
ML21029A3192021-02-18018 February 2021
Final Accident Sequence Precursor Analysis - Quad Cities Nuclear Power Station, Unit 2, Electromatic Relief Valve 3D Failed to Actuate Due to Out-of-Specification Plunger (LER 265-2020-002) - Precursor
ML20168A7192020-06-16016 June 2020
Final ASP Analysis - Quad Cities 2 (LER 265-75-035)
ML20168A7182020-06-16016 June 2020
Final ASP Analysis - Quad Cities 2 (LER 265-75-031)
ML20156A1462020-06-0404 June 2020
Final ASP Analysis - Quad Cities 2 (LER 265-80-032)
ML20156A1492020-06-0404 June 2020
Final ASP Analysis - Quad Cities 2 (LER 265-84-010)
ML20156A1482020-06-0404 June 2020
Final ASP Analysis - Quad Cities 2 (LER 265-82-017)
ML20156A1472020-06-0404 June 2020
Final ASP Analysis - Quad Cities 2 (LER 265-82-010)
ML20156A1442020-06-0404 June 2020
Final ASP Analysis - Quad Cities 1 (LER 254-84-014)
ML20135H3122020-05-14014 May 2020
Final ASP Analysis - Quad Cities 1 (LER 254-90-003)
ML20135H3132020-05-14014 May 2020
Final ASP Analysis - Quad Cities 1 (LER 254-92-004)
ML20135H3142020-05-14014 May 2020
Final ASP Analysis - Quad Cities 2 (LER 265-93-010)
ML20114E2002020-05-12012 May 2020
Final ASP Analysis - Quad Cities 2 (LER 265-01-001-01)
2021-03-24
[Table view] |
Text
t 30, 1975 Found Inoperable at Quad Cities 2 sequence was:
C system had failed for reasons unspecified.
was initiated to determine the operability of HPCI st revealed that HPCI was also inoperable due to a broken auxiliary oil pump oth RCIC and HPCI were inoperable am orderly shutdowm was initiated.
action:
ctor was shutdown in an orderly fashion.
I auxiliary oil pump line was replaced with the sarae type of line.
ose of failed system or component:
ovides for core cooling when feedwater is unavailable.
ovides emergency cooling water-when the system pressure is above the LPCI and ating pressures.
iliary oil pump provides lubrication to the HPCI turbine prior to initiation turbine driven lube oil pump.
ity of system per WASH 1400:
- RpCm 8.8 x 10-2 /D ity of component per WASH 1400:
- pump failure to start: I x 10-3 /D ilabilities are in units of per demand D-1. Failure rates are in r hour HR-1 .
operabilityI Core Damage No
-No -ADSILPCI/CS available; however, a violation if Tech. Specs.
-No
-No -ADS/LPCIICS available; however, a violation of Tecl'. Specs.
NSIC 106333 - Actual Occurrence of HPCI Found Inoperable at Quad Cities 2
No 1 I
Yes 2 No 3
- (F) Yes s
Yes 5 o
Yes 6 Yes 7 NSIC 106333 - Sequence of Interest for HPCI Found Inoperable at Quad Cities 2
ON NUMBER: 106333 September 9, 1975 T: August 31, 1975 VED: HPCI VOLVED: aux lube oil pump n oil line INTEREST: loss of feedwater flow RENCE: HPCI found inoperable at Quad Cities 2
- Quad Cities 2 R: 50-265
- BWR RICAL RATING: 789 MWe 3.4 yr eral Electric GINEERS: Sargent & Lundy ommonwealth Edison 20 miles NE of Moline 360(a) hours ING CONDITION: 69% power RE TYPE OF FAILURE: (a) inadequate performance; failed to start; (c) made inoperable; (d) ____________
THOD: surveillance testing
