Fukushima's Impact: Beyond the SAMGs and New Equipment Training
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Transcript of Fukushima's Impact: Beyond the SAMGs and New Equipment Training
Fukushima’s Impact: Beyond the SAMGs and New Equipment Training
2
Accident Conditions
• Loss of all off-site power sources
• Loss of all on-site power sources, including diesel generators
• Destruction of communications infrastructure
• Severely limited plant access
3
Operator Training Focus Areas
• FLEX equipment
• Long-term loss of electrical power
• Severe accident response
4
FLEX Equipment Training
• Training must be developed for new and modified equipment to address:
– Restoration of electrical power
– Reactor makeup capabilities
– Reactor core cooling
– Spent fuel pool makeup capabilities and cooling
5
Restoration of Electrical Power
• On-site/Off-site Equipment– Portable engine driven generators– Batteries and chargers
– Personnel must be trained to:
• Locate and transport equipment• Connect portable equipment to installed
plant components• Operate, monitor and maintain equipment
6
Reactor Makeup Capabilities and Core Cooling
• On-site/Off-site Equipment
– Portable pumps• Engine driven or powered from portable generators
– Normal and alternate on-site water sources• RWST, CST, Rx makeup, fire water, raw water• Borated water• Fire trucks and tanker trucks
7
Reactor Makeup Capabilities and Core Cooling
• Personnel must be trained to:– Locate and transport equipment
– Connect portable equipment to installed plant components
– Route and connect on-site sources to alternate connection points via temporary hoses
– Operate, monitor and maintain equipment
– Monitor plant parameters with limited or no electrical power or lighting
8
Spent Fuel Pool Makeup and Cooling
• On-site/Off-site Equipment
– Portable pumps• Engine driven or powered from portable generators
– Normal and alternate on-site water sources• RWST, CST, Rx Makeup, fire water, raw water• Borated water• Fire trucks and tanker trucks
9
Spent Fuel Pool Makeup and Cooling
• Personnel must be trained to:– Locate and transport equipment
– Connect portable equipment to installed plant components
– Route and connect on-site sources to alternate connection points via temporary hoses
– Operate, monitor and maintain equipment
– Monitor plant parameters with limited or no electrical power or lighting
10
Long Term Loss of Electrical Power
• Training must be developed for an extended loss of all electrical power to address:
– Shedding of all but the most critical loads from the instrument buses to prolong battery life• This may require simulator electrical model upgrades
– Operating with limited lighting, communication equipment and instrumentation
11
Long Term Loss of Electrical Power
- Coordination of FLEX equipment usage
- Restoration of communication equipment and lightingin the control room
• Training must be developed for an extended loss of all electrical power to address:
12
Severe Accident Response
• Simulator software has not historically been capable of modeling beyond design basis/severe accident scenarios
• Lessons learned from Fukushima illustrate the need to train the plant staff on severe accident situations, including revised SAMGs and newly developed guidelines
• New models will be necessary to run severe accident scenarios for reactor core, containment, auxiliary building and spent fuel pool
13
Conclusions
• New training must be developed for:
– FLEX equipment and related procedures
– Evaluating and shedding DC and instrument bus loads to prolong battery life
– Managing situations with limited or no lighting or normal communications equipment
14
– Revised SAMGs and new emerging guidelines
– Emergency response organization interface
Conclusions
• New training must be developed for:
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