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The purpose of this course is to provide the necessary information to Technical Support Center (TSC) / Shift Technical Adviser (STA) / Plant Engineering Staff (PES) such that they can provide adequate and effective support to the operators during and accident recovery.
Course Approach
The teaching approach combined classic presentations where the physical aspects of the most important EOP recovery strategies are presented and explained with Case Studies, which put the attendees in situations for which they have to come up with answers to operator initiated questions or advises. The Plant Engineering Staff (PES) Cases Studies in the following agenda are intended to provide information on the possible evaluations that a Technical Support Center (TSC), Shift Technical Adviser (STA) or Plant Engineering Staff (PES) would have to perform to support control room operators in case of accidents. This includes evaluations concerning:
- RHR suction alignment
- Need to transfer to hot let recirculation
- Establishing RCS letdown or not, Venting RV head or not
- Post-SGTR cooldown method
- Control of sump pH, SG overfill
- Which SG to use for cooldown
- Reinitiation of feed to a dry SG
- RCP status, Long term plant status
DAY 1
- Symptom-Based Emergency Operating Procedures - Introduction
- Diagnostic
- SI Termination & Reinitiation Criteria
- EOP Evaluations by TSC or Plant Engineering Staff
- Loss of Coolant Accident Physics in relation with Break Size
DAY 2
- RCP Trip/Restart Criteria
- SI Reduction Criteria
- Case Study 1 - Small Break LOCA
- Case Study 2 - Large Break LOCA
DAY 3
- Shutdown LOCA
- Case Study 3 - Stuck Open Safety Valve
- Case Study 4 - LOCA Outside Containment
- Pressurized Thermal Shock Aspects - FR-Ps
DAY 4
- E-3, Steam Generator Tube Rupture
- SGTR Contingencies
- Case Study 5 - SGTR
- Case Study 6 - Faulted & Ruptured SG
- Return to power & ATWS
DAY 5
- Case Study 7 - Anticipated Transient Without Trip
- Total Loss of Feedwater & Bleed and Feed
- Case Study 8 - Loss of Secondary Heat Sink
- Case Study 9 - Degraded and Inadequate Core Cooling
- Instrumentation Response in Accident Conditions
