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Here are the measurement results of temperatures inside the Unit 3 Primary Containment Vessel at Fukushima Daiichi Nuclear Power Station.

Monitoring points

Monitoring points

Temperature

Temperature
  • Here are the measurement points for each temperature.

  • For reference: The following is the “Limiting Conditions of Operations” designated in the implementation plan for temperatures
    inside the Primary Containment Vessel:
       ・Temperature inside the Primary Containment Vessel: Overall, no tendency for significant rise in temperature

Announcement

  • On June 30, 2022, temperature at the Return Air Drywell Cooler (TE-16-114A) in the Unit 3 Primary Containment Vessel (PCV) was excluded from planned data monitoring.
  • Data may change or be missing due to equipment failure or regular inspections.
  • Temperature may change due to change of water injection flow rate to the reactor.
  • Instrument equipment is removed, installed or inspected for regular inspections at Unit 1 - 4.
    During the work period, the indicated value will fluctuate or be absent, but the equipment will return to a measureable state at a defined time.

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