Vinyl chloride is transported as a liquid at its vapor pressure. The ambient temperature is 25C, at which the vapor pressure is 51.5 psia, and the density is 911kg/m3. Consider a rail car containing 88,500 kg of vinyl chloride that is involved in a derailment accident and develops a 5 cm diameter hole. Assume that vinyl chloride is discharged as a liquid and the heat transfer rate is sufficient to keep the rail car at ambient temperature. Determine the flow rate of the discharge in kg/s. The vinyl chloride will vaporize upon release and disperse into the air. Assume the vinyl chloride continues to be released until the tank is empty. Which type of discharge should this be considered, a plume or a puff? The accident occurred in a rural area at 9:30 a.m. on a very cloudy day. The wind speed was 3 m/s. For a discharge rate of 30kg/s at ground level, what distance downwind would need to be evacuated to limit exposure to the ERPG-1 for vinyl chloride? If all the vinyl chloride was released at once, what distance would need to be evacuated