The Sangyo Shinko Co.,Ltd.
NIPPON STEEL & SUMITOMO METAL CORPORATION Nagoya Works

Industry Steel / Nonferrous metals / Metals
Job description Steel industry
Model COOLEX-1
Introduction workplace Base metal ingot cast cutting / Scrap iron cutting
Location Aichi prefecture
Background

Base metal ingot cast cutting with thermic lances. We work indoors and room temperature gets considerably high, especially in the summer. Sparks fly so we need to wear cotton or flame-retardant / non-melting clothing at the workplace.

Steel scrap cutting with acetylene fusion cutters. This work is done outside and workers get extremely hot because of direct exposure to sunlight on top of the cutting work in addition to the heat source of cutting work process itself. We have been actively working on taking measures against the heat, but we couldn't use fans because of the danger involved with flying dust and sparks.

Circumstances
We got our first introduction from a circulation by the cooperative association for heatstroke countermeasures.
A company (HOKUSAN Service) ,which carries out contract work on the premises, managed this project, and after completing various tests and confirmations below, we finaly decided to implement COOLEX.
・Confirmation of cooling effect at the actual workplace by demonstration machine
・Confirmation of specifications of flame-retardant material type that is not same as standard type
・Dust and durability check for continuous operation (24 hours) for 2 months
Effectiveness
Cooling effect is excellent. The hose length is 8m, and then we installed the chiller where there is no direct sparking. For outdoor work, we also use optional "Hose balancer" and "Chiller wagon", and we are improving workability and devising ideas so that the hose does not run on the ground.
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