IHI NIIGATA MG(L)26HLX, Инструкция по эксплуатации

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S E C T I O N
１
- O U T L I N E
1.4 ENGINE COOLANT
１－４－０２
c) Silicate
Silicate corrosion inhibitors are completely free of toxicity and waste
water can be discharged without treating.
d) Soluble oil
CAUTION
Corosion inhibitors of soluble oil type is not suitable for the engine.
Soluble oil corrosion inhibitors are made by adding a surface active agent,
etc. into mineral oil. Waste oil to be discharged must meet the
* C.O.D. requirements and the oil content must be treated.
* C.O.D. value: When reducer (waste liquid of inhibitor in this case) is added to
fresh water (or sea water), oxygen contained in the water is
reduced and the state of oxygen deficiency is produced.
The quantity of oxygen required for eliminating this state of
oxygen deficiency is indicated as C.O.D-( )ppm.
The following method are available for satisfying this C.O.D. value.
- To dilute the water with water of a suitable volume.
- To blow air in.
- To oxidize the water by adding a suitable oxidizer (sodium
hypochlorite, etc.).
(2) Caution in using corrosion inhibitors
CAUTION
The rust-preventive agent, inhibitor and anti-freeze for use with cooling
water line are poisonous to the human body.
Handle them carefully so that they will not come into eyes or come in
contact with the body.
Be sure to put on safety goggles in carrying out the following items of
work being in danger of injury to eyes.
・
When handling cooling water
Methods of adding corrosion inhibitors, concentration, diposal of waste water, etc.
very somewhat with manufacturers. When using a corrosion inhibitor, observe the
following instructions and consult with the manufacture.
a) Adding
Generally, prepare a thick solution of 10 to 20 % in volume and gradually pour it
into the cooling water. In case an antifreeze liquid must be added into the cooling
water in cold regions, consult inhibitor manufacture because the mixture could
adversely affect both the antifreeze and the corrosion inhibitor.