check for evidence of exposure to heat.look for discoloured or melted gauge lenses. Ensure air quality set out in CSA Standard Z180.1-00(R2010),Compressed Breathing Air and Systems.
check for evidence of exposure to heat.look for discoloured or melted gauge lenses.Ensure air quality set out in CSA Standard Z180.1-00(R2010),Compressed Breathing Air and Systems.