EMERSONWestinghouse E 20 Training From Normal Operation to Se lectric Belgium 14 Catalog vere Accident Management

 Introduction to Accident Analysis 

DAY 3 

 Introduction to Accident Analysis (continued) 

 Reactivity Addition and Power Distribution 

Anomaly Accidents 

DAY 4 

 Increased Heat Removal by the Secondary 

System Accidents 

 Reduced Heat Removal by the Secondary 

System Accidents 

DAY 5 

 Reduced Reactor Coolant Flow Accidents 

 Loss of Reactor Coolant Accidents 

SECOND WEEK 

DAY 1 

 Loss of Reactor Coolant Accidents 

(continued) 

 Steam Generator Tube Rupture Accidents 

DAY 2 

 Introduction to Mitigating Core Damage 

 Critical Safety Function: 

 Subcriticality 

 ATWS 

DAY 3 

 Critical Safety Function: 

 Core Cooling 

 Inadequate Core Cooling 

 Critical Safety Function: 

 Heat Sink 

 Loss of Secondary Heat Sink 

DAY 4 

 Critical Safety Function: 

 Primary Integrity 

 Pressurized Thermal Shock 

Critical Safety Function: 

 Containment 

 Severe Accident Phenomenology 

DAY 5 

 Severe Accident Phenomenology 

(Continued) 

 Accident Response Instrumentation

 EMERGENCY RESPONSE GUIDELINES 

(OP 144) 

Course Objectives 

The purpose of this course is to explain the 

background of the ERGs Rev. 2, and their use. 

Emphasis is placed on understanding of 

phenomena and recovery actions rather than 

pure description of procedures. 

Course Outline 

DAY 1 

 Philosophy and structure of the ERGs 

 E-0 procedure and subprocedures 

DAY 2 

 LOCA concerns 

 E-1, E-2 and subprocedures 

DAY 3 

 Steam Generator Tube Rupture 

 E-3 and Subprocedures 

DAY 4 

 ATWS 

 Inadequate Core Cooling 

 Loss of Feedwater 

DAY 5 

 Pressurized Thermal Shock (PTS) 

 Containment Integrity 

 RCS Inventory 

 Total Loss of AC Power 

 Questions and Answers 

 CORE DAMAGE MITIGATION AND 

SEVERE ACCIDENT MANAGEMENT 

(OP 145) 

Course Objectives 

This course is designed to familiarize plant 

operation personnel and staff members with 

severe accident phenomena and accident 

scenarios highlighting the recovery and 

mitigation actions to prevent and limit core 

damage, maintain containment integrity and 

minimize the fission product releases. The 

Severe Accident Management Guidelines 

(SAMGs), developed by the Westinghouse 

Owners Group, are presented and their link with 

the Emergency Operating Procedures and the 

Site Emergency Plan is explained. 

Course Outline 

 Introduction 

 Definition of a severe accident 

 Description of Chernobyl, Three Mile 

Island, and Fukushima Accidents 

 Tools for the Study of the Severe 

Accidents 

 PSA Terminology and Scope 

 PSA Example Results 

 PSA Uses 

 PSA Decision Making Criteria 

 Severe Accident Simulation Models 

 Example Severe Accident Sequence 

 Introduction to Severe Accident 

Management 

 Plant behavior prior to Core Damage: 

Initiating Events, Emergency Operating 

Procedures (EOPs) 

 Anticipated Transient Without Scram 

(ATWS) 

 Loss of Coolant Accidents / Inadequate 

Core Cooling (ICC) 

 Loss of Feedwater / Loss of Heat Sink 

(LOHS) 

 Loss of AC Power 

 Severe Overcooling / Pressurized 

Thermal Shock (PTS) 

 Response of Instrumentation to Core 

Uncovery 

 Plant behavior during and after core damage: 

in vessel phase 

 Behavior up to core uncovery 

 Core melt progression 

 Hydrogen generation 

 Natural circulation and creep failure 

phenomena 

 Reactor vessel failure 

 Importance of EOPs and operator actions 

 Plant behavior during and after core damage: 

ex- vessel phase 

 Containment design 

 Debris dispersal 

 Direct containment heating 

 Vessel thrust 

 Steam explosions 

 Debris coolability 

 Core concrete attack 

 Hydrogen behavior in containment 

 Containment fragility and failure modes 

 Radiological Aspects 

 Fission product inventory 

 Fission product release from fuel 

 Fission product transport 

 Source terms 

 Severe accident mitigation hardware 

 Filtered containment venting 

 Emergency containment spray system 

 Hydrogen control systems 

 Severe Accident Management Guidance – 

WOG SAMG Overview 

 Background 

 Scope and philosophy 

 Technical basis 

 Goals 

 Structure of SAMG 

 Interface with EOPs and E-plan 

 Control room SAMG 

 TSC SAMG 

 Instrumentation 

 Phenomenology 

 Computational aids 

 Design variations 

 Summary 

 DEDICATED TSC/STA TRAINING 

FOR EOP SUPPORT (OP 146) 

Course Objectives 

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