The manipulator crane used in NPP can be used for refueling and transporting spent fuel assemblies harmful to one's health.

核电站起重机器人可用来装卸、搬运乏燃料组件等对人体有害的物体。

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The spend fuel pit Cooling System is designed to remove the decay heat generated by stored spend fuel assemblies and to purify the water in the spent fuel pit.

废燃池冷却系统用于导出乏燃料组件的衰变热，同时净化乏池内的水质。

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Reactor operators typically discharge about one-third of the fuel assemblies every 18 months to 2 years and place this spent fuel in a pool to cool .

FORBES: Nuclear Power's Long and Toxic Tail

Restarting cooling to the spent fuel pool at reactor 4 had been of particular urgency for Tepco as it had the highest number of fuel assemblies stored there, Kyodo news agency reported.

BBC: Power at Fukushima nuclear fuel ponds restored