Experience Evaluations of the Residual Heat Removal Chain of the Fuel Pool

Objectives:

The participants receive background knowledge regarding the heat removal chain - based on VGB Powertech specifications. This is intended to provide employees in systems engineering with the necessary understanding of the existing technical solutions. For the operating personnel, background information for determining operating modes is of particular importance, which is also addressed in this course. 

Content:

• Historical development, basic design requirements
• Safety-related functions, error concept
• Process engineering requirements and design
• High river water temperatures
• Emergency cooling standby, fuel pool heat removal / cleaning.
• Aftercooling control, Barsebeäck 2 event 1992
• Driving modes for backwashing the sump strainers according to LOCA
• Angra 2, flooding annulus from fuel pool, Biblis unit A - event
• Failure of the primary heat sink
• Potential causes of primary heat sink failure, superimposed events.
• Blockage of inlet structures due to foreign material - jellyfish/ - ice formation.
• Formation of biological foreign bodies in power plant systems - mussels
• Impairment of heat transfer at heat exchangers - fouling
• Retention and cleaning of foreign substances
• MIC - Microbiologically induced corrosion / component cooling systems
• Evaluation of cooling water systems, damage to piping in auxiliary cooling water systems, specific know-why issues.

Target Group:

Employees of the Systems Engineering Department and responsible shift personnel (engineers, technicians, foremen, clerks). Depending on the group of participants, the main topics will be adapted.

Requirements:

Relevant work experience in a PWR nuclear power plant

Duration:

1 day

Other information:

Participants: 6 to 12 people

The training can also be held in suitable training rooms at the customer's facility.