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NUREG Investigation Report No. NUREG-LER-2019-002-00 2019 Operational Operational
St. Lucie 1 号机 反应堆冷却剂泵(RCP)接地故障跳机（LER 2019-002-00）
St. Lucie Nuclear Plant, Unit 1, Florida (NRC LER 50-335/2019-002-00)
Related equipment → Centrifugal pump (centrifugal_pump)
0Fatalities
0Injuries
FailureMechanism code ELP
⌗Failure Mode · ISO 14224 Mapping
Damage mechanism (recorded in KB)
FailureELP
ISO functional code (as recorded)
ISO 14224:2016 functional failure code
ELP · External leakage - process
ISO ELP — External leakage - process.
1What Happened

RCP 电机定子接地故障→泵跳闸→反应堆自动停堆

2Root Cause

RCP 电机定子接地故障

3Reliability Lessons (from investigation root cause)
  • The 'Root Cause' above is the core lesson of this accident; not split further.
4Associated Failure Mechanisms (Keywords)
RCP 反应堆冷却剂泵 接地故障 定子 跳泵 停堆 电机失效
About the Failure-Mode Code (click to expand)

The recorded code ELP is an ISO 14224:2016 functional failure code (describes what the equipment failed to do). The damage mechanism (how it failed) is shown in the Mapping block above. The two are distinct dimensions in ISO 14224.

5Evidence Source (transparent)
Authority：U.S. Nuclear Regulatory Commission (NRC) — Licensee Event Report (LER)
Official Report：www.nrc.gov ↗
Data Verification：verified_url_nrc_pdf_2026-08-07
↗Related Failure Modes · Traceability
单螺杆/ Progressive Cavity stator_elastomer_wear
Report No. NUREG-LER-2019-002-00 · Data from NUREG (US NRC) public investigation conclusions, compiled by Reliability AI, for reliability demonstration purposes only. This case is derived from public incident investigation reports for learning purposes only. AIM does not endorse or guarantee its accuracy.