SOURCE STRENGTH: Leak from hole in spherical tank Flammable chemical escaping from tank (not burning) Tank Diameter: 15 meters Tank Volume: 1,767 cubic meters Tank contains gas only Internal Temperature: -15?C Chemical Mass in Tank: 64.9 tons Internal Press: 20 atmospheres Opening Length: 3 centimeters Opening Width: 0.5 centimeters Release Duration: ALOHA limited the duration to 1 hour Max Average Sustained Release Rate: 29.5 kilograms/min (averaged over a minute or more) Total Amount Released: 1,750 kilograms THREAT ZONE: Threat Modeled: Flammable Area of Vapor Cloud Model Run: Heavy Gas Red : 27 meters --- (16200 ppm = 60% LEL = Flame Pockets) Note: Threat zone was not drawn because effects of near-field patchiness make dispersion predictions less reliable for short distances. Yellow: 75 meters --- (2700 ppm = 10% LEL) THREAT AT POINT: Concentration Estimates at the point: Downwind: 12 meters Off Centerline: 3 meters Max Concentration: Outdoor: 177 ppm Indoor: 137 ppm