NIOSH.pdf

NIOSH - Odor Fade in Natural Gas and Propane Use equipment to detect natural gas and propane not sense of smell Calibrate daily and use meters Odor is lost in soil, concrete, drywall and other building materials 2 Types of Odorant: 1. Methyl Mercaptan - Natural gas 2. Ethyl Mercaptan - Propa...

NIOSH - Odor Fade in Natural Gas and Propane Use equipment to detect natural gas and propane not sense of smell Calibrate daily and use meters Odor is lost in soil, concrete, drywall and other building materials 2 Types of Odorant: 1. Methyl Mercaptan - Natural gas 2. Ethyl Mercaptan - Propane Smell of rotten eggs or cabbage Odor fade Absorption or Oxidation More common in new larger steel pipes and tanks and polyethylene Reduce Odor Fade Condition equipment Propane (C3H8) UN ID # 1075 ERG Guide 115 Liquid Propane Gas used for vehicles 1.5x heavier than air (simple asphyxiant) Vapor LPG becomes vapor at -44*F 1 gallon LPG = 270 gallons vapor Home Grill 4.75 gals = 1,274 gal vapor cloud Vapor extends beyond cloud Meter - Ventis 3 gas Mult LEL x2 Use Meter Slow and Low it takes softball sized samples O2 sensor low something is air One or Multiple Sensors in alarm consider Hazmat