A brief description of Framatome’s integral test facility, PKL (German acronym Primärkreislauf-Versuchsanlage, Primary Circuit Test Facility), and its utilisation in PWR safety research, training, and code validations.

‍

• Basic knowledge on PWR components (primary and secondary circuits) and operation.

By the end of the workshop, participants will:

• Examples of utilisation of experimental results from the integral test facility in safety analysis, training and code validation.
• A brief discussion of main thermal-hydraulic phenomena in the courses of events of example PWR operating and accidental transients: Cool-Down in Asymmetric Natural Circulation Mode of Operation (Loss of Offsite Power), Small-Break Loss-of-Coolant Accidents (SB-LOCA), Inherent Boron Dilution Issues, Station-Blackout.
• Examples on how experimental results can serve to illustrate and enhance understanding of the sequence of phenomena and basic thermal-hydraulic.

• 9:00 AM - 10:30 AM: PKL test facility (30 min), Measurements and Interpretation (10 min) Basic conceptions of PWR T/H (single-/two-phase circulation, reflux-condenser, etc.)‍
• 10:30 AM - 10:45 AM: Coffee Break.
• 10:45 AM - 12:00 PM: Example Transient on Cool-Down in Natural-Circulation Mode-of-Operation Loss-of-Offsite Power (LOOP).
• 12:00 PM - 1:00 PM: Lunch Break.
• 1:00 PM - 2:30 PM: Example transient: SB-LOCA (Counterpart testing with LSTF on Impact of Non-Condensable Gases During Cool-Down).
• 2:30 PM - 2:45 PM: Coffee Break.
• 2:45 PM - 4:00 PM: Example transient: Cool-Down in Natural Circulation with SACO under Extended Loss-of-AC-Power (ELAP).