Kirby Morgan 77
WARNING
The one way valve must be tested daily, prior to commencement of diving opera- tions. Failure of the one way valve could cause serious injury or death.
You can also test the one way valve by attempting to suck air through the valve. The emergency valve must be open for this test to work properly. If you are able to suck any air through the valve it is not working properly.
WARNING
Never dive if the one way valve is not op- erating properly. If the hose or breathing gas/air fitting breaks near the surface a serious injury could result to the diver’s lungs and/or eyes. In extreme cases this could be fatal. The one way valve must be tested daily prior to the commencement of diving operations.
3.7 Emergency Gas System (EGS)
If the diver’s main gas supply fails, the diver must have another source of gas that will enable him to return to the dive station or to a point where a nor- mal gas supply can be reestablished. For this reason, an emergency gas supply (bailout) cylinder must be used on all dives. The bailout cylinder is normally worn on the back using a combination backpack and lifting harness.
WARNING
Do not dive without a diver worn Emer- gency Gas System. If the main gas supply is lost, you will have nothing to breathe and may drown.
Diver donning a complete bail-out system.
Most commercial divers wear a harness (separate from the weight belt) that is used for several pur- poses. The harness is fitted with large metal rings (usually brass or stainless steel). The umbilical is hooked into one of these rings to keep any strain off the helmet. In addition, the rings on the harness are used to hang tools and other equipment. Usually the harness is also designed to provide a means of lifting an unconscious diver from the water. This harness is the best method of securing the emergency breathing gas to the diver.
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