| 摘要 |
PURPOSE: A water tank is provided to perform cleaning easily and quickly by forming an entrance at a side face and prevent leakage through the entrance without fail while minimizing an incidence rate of safety accident. CONSTITUTION: The water tank(10) which is hollow inside includes: an entrance(11) which is penetrated at a predetermined position of a side face portion so as to be of such a predetermined size to allow a worker come and go through and which is provided with a plurality of hinge assembly portions, a plurality of bolt holes and a plurality of door fixing bolts; and an opening and closing door(30) detachably assembled to the entrance(11) and for opening and closing the entrance(11).
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