6-aloha文件乙醛中毒事故模擬_h

1、Toxic Threat ZoneALOHA? 5.4.1.2miles1.50.500.51.5 101234miles=1000 ppm =200 ppm =ERPG-3ERPG-210 ppm =ERPG-1LinesConfidenceTime: June 29, 2019 2243 hours ST (using computers clock)Chemical Name: ACETALDEHYDE Carcinogenic risk - see CAMEO ChemicalsWind: 3 meters/second from SE at 3 meters THREAT ZONE:

2、Model Run: Heavy GasRed : 335 yards - (1000 ppm = ERPG-3) Orange: 916 yards - (200 ppm = ERPG-2) Yellow: 3.0 miles - (10 ppm = ERPG-1)Source Strength (Evaporation Rate)ALOHA? 5.4.1.2pounds/minute80060040020000204060minutesTime: June 29, 2019 2243 hours ST (using computers clock)Chemical Name: ACETAL

3、DEHYDE Carcinogenic risk - see CAMEO ChemicalsSOURCE STRENGTH:Leak from hole in vertical cylindrical tankFlammable chemical escaping from tank (not burning)Tank Diameter: 5.5 metersTank Length: 10.847 meters Tank Volume: 258 cubic metersTank contaliquidInternal Temperature: 20 C Chemical Mass in Tan

4、k: 178 tonsTank is 80% fullOpening Length: 0.1 metersOpening Width: 0.02 meters Opening is 5.42 meters from tank bottomGround Type: Default soilGround Temperature: equal to ambient Max Puddle Diameter: UnknownRelease Duration: ALOHAlimited the duration to 1 hour Max Average Sustained Release Rate: 7

5、18 pounds/min(averaged over a minute or more) Total Amount Released: 39,362 poundsNote: The chemical escaped as a liquid and formed an evaporating puddle. The puddle spread to a diameter of 41 yards.Text SummaryALOHA? 5.4.1.2SITE DATA:Location: JIANGSU CHANGSHU, CHINABuilding Air Exchanges Per Hour:

6、 0.70 (unsheltered single storied) Time: June 29, 2019 2243 hours ST (using computers clock)CHEMICAL DATA:Chemical Name: ACETALDEHYDEMolecular Weight: 44.05 g/mol ERPG-1: 10 ppmERPG-2: 200 ppmERPG-3: 1000 ppmIDLH: 2000 ppmLEL: 40000 ppmUEL: 600000 ppmCarcinogenic risk - see CAMEO Chemicals Ambient B

7、oiling Point: 69.5 FVapor Pressure at Ambient Temperature: greater than 1 atm Ambient Saturation Concentration: 1,000,000 ppm or 100.0%ATMOSPHERIC DATA: (MANUAL INPUT OF DATA)Wind: 3 meters/second from SE at 3 metersGround Roughness: open countryCloud Cover: 10 tenths Air Temperature: 30 CStability

8、Class: DNo Inversion HeightRelative Humidity: 80%SOURCE STRENGTH:Leak from hole in vertical cylindrical tankFlammable chemical escaping from tank (not burning)Tank Diameter: 5.5 metersTank Length: 10.847 meters Tank Volume: 258 cubic metersTank contaliquidInternal Temperature: 20 C Chemical Mass in

9、Tank: 178 tonsTank is 80% fullOpening Length: 0.1 metersOpening Width: 0.02 meters Opening is 5.42 meters from tank bottomGround Type: Default soilGround Temperature: equal to ambient Max Puddle Diameter: UnknownRelease Duration: ALOHAlimited the duration to 1 hour Max Average Sustained Release Rate: 718 pounds/min(averaged over a minute or more) Total Amount Released: 39,362 poundsNote: The chemical escaped as a liquid and formed an evaporating puddle. The puddle spread to a diameter of 41