Coolant Supply
Under warm or strenuous work conditions, adequate coolant should be provided to keep the wearer's body at a comfortable temperature and to reduce the potential for heat stress. If coolant is necessary, the duration of the coolant supply will directly affect mission duration.
Personal Use Factors
As described below, certain personal features of workers may jeopardize safety during equipment use.
Facial Fit - Beard Comparison - Pro Safety and Training
Prohibitive or precautionary measures should be taken as necessary.
- Facial hair: Facial hair and long hair interfere with respirator fit and wearer vision. Any facial hair which passes between the face and the sealing surface of the respirator should be prohibited. Long hair must be effectively contained within protective hair coverings.
- Eyeglasses: Eyeglasses with conventional temple pieces (earpiece bars) will interfere with the respirator-to-face seal of a full facepiece. A spectacle kit should be installed in the face masks of workers requiring vision correction.
- Corrective lenses: When a worker must wear corrective lenses as part of the facepiece, the lenses must be fitted by qualified individuals to provide good vision, comfort, and a gastight seal. Contact lenses may trap contaminants and/or particulates between the lens and the eye, causing irritation, damage, absorption, and an urge to remove the respirator. Wearing contact lenses with a respirator in a contaminated atmosphere is prohibited.
- Gum and Tobacco: Gum and tobacco chewing should be prohibited during respirator use since they may cause ingestion of contaminants and may compromise the respirator fit.
Knowledge Check Choose the best answer for the question.
4-3. Wearing contact lenses with a respirator in a contaminated atmosphere is _____.
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