|
---|
Category:Accident Sequence Precursor (ASP) Analysis
MONTHYEARML20168A7322020-06-16016 June 2020 Final ASP Analysis - St. Lucie 1 (LER 335-78-017) ML20168A7312020-06-16016 June 2020 Final ASP Analysis - St. Lucie 1 (LER 335-77-026) ML20156A2522020-06-0404 June 2020 Final ASP Analysis - St. Lucie 2 (LER 389-87-003) ML20156A2512020-06-0404 June 2020 Final ASP Analysis - St. Lucie 2 (LER 389-86-011) ML20156A2502020-06-0404 June 2020 Final ASP Analysis - St. Lucie 2 (LER 389-84-011) ML20156A2492020-06-0404 June 2020 Final ASP Analysis - St. Lucie 2 (LER 389-84-004) ML20156A2482020-06-0404 June 2020 Final ASP Analysis - St. Lucie 2 (LER 389-83-037) ML20156A2472020-06-0404 June 2020 Final ASP Analysis - St. Lucie 1 (LER 335-82-062) ML20156A2462020-06-0404 June 2020 Final ASP Analysis - St. Lucie 1 (LER 335-82-040) ML20156A2452020-06-0404 June 2020 Final ASP Analysis - St. Lucie 1 (LER 335-81-056) ML20156A2442020-06-0404 June 2020 Final ASP Analysis - St. Lucie 1 (LER 335-80-029) ML20140A2102020-05-19019 May 2020 Final ASP Analysis - St. Lucie 2 (LER 389-95-005) ML20140A2092020-05-19019 May 2020 Final ASP Analysis - St. Lucie 2 (LER 389-90-001) ML20140A2082020-05-19019 May 2020 Final ASP Analysis - St. Lucie 1 (LER 335-97-011) ML20140A2072020-05-19019 May 2020 Final ASP Analysis - St. Lucie 1 (LER 335-95-004) 2020-06-04
[Table view] Category:Final
MONTHYEARML20168A7322020-06-16016 June 2020 Final ASP Analysis - St. Lucie 1 (LER 335-78-017) ML20168A7312020-06-16016 June 2020 Final ASP Analysis - St. Lucie 1 (LER 335-77-026) ML20156A2522020-06-0404 June 2020 Final ASP Analysis - St. Lucie 2 (LER 389-87-003) ML20156A2512020-06-0404 June 2020 Final ASP Analysis - St. Lucie 2 (LER 389-86-011) ML20156A2502020-06-0404 June 2020 Final ASP Analysis - St. Lucie 2 (LER 389-84-011) ML20156A2492020-06-0404 June 2020 Final ASP Analysis - St. Lucie 2 (LER 389-84-004) ML20156A2482020-06-0404 June 2020 Final ASP Analysis - St. Lucie 2 (LER 389-83-037) ML20156A2472020-06-0404 June 2020 Final ASP Analysis - St. Lucie 1 (LER 335-82-062) ML20156A2462020-06-0404 June 2020 Final ASP Analysis - St. Lucie 1 (LER 335-82-040) ML20156A2452020-06-0404 June 2020 Final ASP Analysis - St. Lucie 1 (LER 335-81-056) ML20156A2442020-06-0404 June 2020 Final ASP Analysis - St. Lucie 1 (LER 335-80-029) ML20140A2102020-05-19019 May 2020 Final ASP Analysis - St. Lucie 2 (LER 389-95-005) ML20140A2092020-05-19019 May 2020 Final ASP Analysis - St. Lucie 2 (LER 389-90-001) ML20140A2082020-05-19019 May 2020 Final ASP Analysis - St. Lucie 1 (LER 335-97-011) ML20140A2072020-05-19019 May 2020 Final ASP Analysis - St. Lucie 1 (LER 335-95-004) 2020-06-04
[Table view] |
Text
May 14, 1978 Off-site Power Lost at St. Lucie 1 lure sequence was:
h the reactor shut down for refueling, improper switching at one substation improper connection of both 240 KV/138 KV autotransformer polarizing rent transformer circuits at another substation resulted in a total loss off-site power.
diesel-generator was inoperative because of maintenance.
second diesel-generator started and assumed safety-related loads until
-site power was restored.
ive action; improper polarization of circuits at the one substation was corrected.
purpose of failed system or component:
-site power provides the preferred source of electric power to safety-ated equipment when the unit generator is not in operation.
lability of system per WASH 1400:
- loss of off-site power: 2 x 10-5 /hr lability of component per WASH 1400:* diesel generator: 3 x 10-2 /D 1
Unavailabilities are in units of per demand D- . Failure rates are in of per hour HR-1.
hut down Switching errors at one Operable diesel- Potential ling and substation and improper generator starts Severe l-generator connection of both and safety-related Core maintenance 240 KV1138 KV autotrans- loads Damage former polarizing current transformer circuits at another substation result in a total loss of of fsite power No No - reactor in refueling and off-site power lost for only 8 minutes No 139565 - Actual Occurrence for Offsite Power Lost at St. Lucie 1
2 3
4 5
6 7
8 9
10 11 12 13 65 - Sequence of Interest for Offsite Power Lost at St. Lucie 1 luded in mitigation procedures.
N NUI'ER: 139565 June 13, 1978 May 14, 1978 D: off-site power LVED: switchyard switches and polarizing current transformer circuits hing error and installation error , human error NTEREST: loss of offsite power with reactor trip NCE: loss of offsite power during refueling St. Lucie 1
- 50-335 PWR ICAL RATING: 802 MWe 2.1 yr ustion Engineering INEERS: Ebasco Florida Power & Light Co.
2 m=j~es.SE~of,.Fort.?ierce, Fla.
A NG CONDITION: refueling E TYPE OF FAILURE: (a) inadequate performance; (b) failed to start;
. (C)made inoperable; (d) _________
HOD: during operational event