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• Flying Shear Cooling \Vater Elimination - Eliminate the once-through cooling of the pipe prior to
the flying shears. 'TIlis will increase the frequency of replacing the pipe, but the solid waste (old
pipe) generated can be returned to the furnace as scrap. Another option is to capture and return
this cooling water to the scale pits.
• Reheating Furnace Cooling Water Evaporation Reduction - Eliminate the spray pipe located over
the cooling water tank for the reheating furnace. 'TIlis ~evice is not appreciably cooling the water
in the tank. and is contributing to evaporation and drift losses from the cooling water tank.
6.3 Miscellaneous Water Conservation Techniques
The JISICO estimated that the quantity of fresh water used for employee sanitary use to be approximately
10 m 3 /d. Based on 0.1 m 3 /employee and 255 employees, the quantity could be as high as 25.5 m 3 /d. The
sanitary water use and wastewater generation can be reduced by employee awareness and installation of
water conservation equipment. Assuming that these procedures would reduce overall miscellaneous water
use by 15 percent, a savings of approximately 1.5 m 3 /0 would be achieved. The following water
conservation suggestions apply to the general water use activities of the JISICO facility:
• \Vater Conservation DeVIces - Replace the water faucets throughout the facility, and specifically the
faucet beneath the elevated water tower, with flow regulation devices such as flow restrictors, flow
shut-off devices, and low volume spray hoses.
• \Vatcr Conservation Training - Provide water conservation awareness training to employees on a
periodic basis.
• Cooling System Operation Optimization - Investigate possible optimization of the design and
operation of the cooling water systems for the furnaces, continuous casting, oxygen plant, power
station, reheating furnaces, roll stands, and water-cooled machines such as the shears. Determine
the lowcst water quality and the highest tcmperature for each machine or operation. Modify
cooling tower design, operation, or chemicals to increase the concentration cycle.
• Good Housekeeping - Emphasize practices that maintain a clean work place without the use of
water for cleaning. Preventing spills and leaks reduccs clean-up. When spills or leaks occur, cleanup
should be conducted using dry methods such as absorbents or a mobile vacuum cleaner that
captures the spill rather than diluting the spill with washwater.
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