Cooling Method Pumps Stop For 15 Hours at No. 5 Reactor
Senin, 30 Mei 2011 by Android Blackberry
Cooling Method Pumps Stop For 15 Hours at No. 5 Reactor
Tokyo Electric Power Co stated Sunday pumps to cool the nuclear reactor and fuel pool at its crippled Fukushima Daiichi power plant’s No. 5 reactor, which had been in a state of ‘‘cold shutdown,’’ stopped for around 15 hours until backup pumps were activated.
The temperature inside the reactor rose to as high as 94.8 C after the unit’s pumps had been discovered to have stopped Saturday night but fell right after switching to the backup pumps to restore the cooling program, TEPCO stated.
If the unit had been left unattended with the temperature surpassing 100 C, the water containing nuclear fuel inside the reactor could have boiled and evaporated, thereby exposing the fuel and damaging it.
But the government’s Nuclear and Industrial Safety Agency said there was no danger of the No. 5 reactor falling into a serious condition simply because you can find backup pumps and strategies for injecting water inside the unit.
TEPCO admitted that though it had reported the incident to the central and prefectural governments on Saturday night, it lacked consideration in waiting to create the data public until Sunday morning.
The nuclear safety agency, nonetheless, said the timing of the announcement was suitable contemplating the scale of the situation.
Heated water inside the No. 5 unit had been cooled by water and seawater employing the residual heat removal program plus the pumps that broke down had been makeshift pumps set up to draw in seawater, according to TEPCO officials.
The predicament may have been caused by insulation failure in the electrical program, the officials stated.
When a worker patrolling the plant became conscious of the difficulty at around 9 p.m. Saturday, the temperature of the water inside the reactor was around 68 C. It had risen to 94.8 C at 12:49 p.m. Sunday, they stated.
Immediately after the March 11 earthquake and tsunami ravaged the plant in Fukushima Prefecture, the No. five reactor was able to accomplish a stable state of ‘‘cold shutdown’’ due to the fact workers had been able to make use of the residual heat removal system.
Tokyo Electric Power Co stated Sunday pumps to cool the nuclear reactor and fuel pool at its crippled Fukushima Daiichi power plant’s No. 5 reactor, which had been in a state of ‘‘cold shutdown,’’ stopped for around 15 hours until backup pumps were activated.
The temperature inside the reactor rose to as high as 94.8 C after the unit’s pumps had been discovered to have stopped Saturday night but fell right after switching to the backup pumps to restore the cooling program, TEPCO stated.
If the unit had been left unattended with the temperature surpassing 100 C, the water containing nuclear fuel inside the reactor could have boiled and evaporated, thereby exposing the fuel and damaging it.
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| Cooling system restored at No.5 reactor. A broken pump has been replaced at |
But the government’s Nuclear and Industrial Safety Agency said there was no danger of the No. 5 reactor falling into a serious condition simply because you can find backup pumps and strategies for injecting water inside the unit.
TEPCO admitted that though it had reported the incident to the central and prefectural governments on Saturday night, it lacked consideration in waiting to create the data public until Sunday morning.
The nuclear safety agency, nonetheless, said the timing of the announcement was suitable contemplating the scale of the situation.
Heated water inside the No. 5 unit had been cooled by water and seawater employing the residual heat removal program plus the pumps that broke down had been makeshift pumps set up to draw in seawater, according to TEPCO officials.
The predicament may have been caused by insulation failure in the electrical program, the officials stated.
When a worker patrolling the plant became conscious of the difficulty at around 9 p.m. Saturday, the temperature of the water inside the reactor was around 68 C. It had risen to 94.8 C at 12:49 p.m. Sunday, they stated.
Immediately after the March 11 earthquake and tsunami ravaged the plant in Fukushima Prefecture, the No. five reactor was able to accomplish a stable state of ‘‘cold shutdown’’ due to the fact workers had been able to make use of the residual heat removal system.
