Temperatures measured inside the Unit 3 Primary Containment Vessel at Fukushima Daiichi Nuclear Power Station

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

Monitoring points

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Here are the measurement points for each temperature.
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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

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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Temperatures measured inside the Unit 3 Primary Containment Vessel at Fukushima Daiichi Nuclear Power Station