Table 2-3. Donning Procedures - CONT
4. Don neck dam and yoke -
b. Spread the rubber neck dam apart and slip it over the head. Pull
neck dam down until it is comfortable in place around the neck.
c. Ensure upper edge of neck dam is turned up. Improperly turned
neck dam will allow breathing air to vent from neck dam.
To prevent personnel injury, ensure air is available
to the helmet and the steady flow valve is opened
slightly before placing helmet on diver.