Kirby 77 WARNING

Kirby Morgan 77

Most commercial divers wear a harness (separate

from the weight belt) that is used for several pur-

poses. The har ness 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.

Diver donning a complete bail-out system.

If the diver’s main gas supply fails, the d iver 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.

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.

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.

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.

WARNING

You can also test the one way valve by at tempting

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.