SITE DATA:
Location: SPOKANE, WASHINGTON
Building Air Exchanges Per Hour: 0.32 (sheltered single storied)
Time: December 6, 2024 1502 hours PST (using computer's clock)
CHEMICAL DATA:
Chemical Name: CYCLOPENTENE
CAS Number: 142-29-0 Molecular Weight: 68.12 g/mol
LEL: 15000 ppm UEL: 121000 ppm
Ambient Boiling Point: 42.3° C
Vapor Pressure at Ambient Temperature: 0.56 atm
Ambient Saturation Concentration: 598,050 ppm or 59.8%
ATMOSPHERIC DATA: (MANUAL INPUT OF DATA)
Wind: 1 meters/second from 76° true at 10 meters
Ground Roughness: 3.0 centimeters Cloud Cover: 7 tenths
Air Temperature: 28° C Stability Class: B
Inversion Height: 15 meters Relative Humidity: 26%
SOURCE STRENGTH:
Leak from hole in spherical tank
Flammable chemical escaping from tank (not burning)
Tank Diameter: 7 meters Tank Volume: 179,594 liters
Tank contains liquid Internal Temperature: 28° C
Chemical Mass in Tank: 111 tons Tank is 73% full
Circular Opening Diameter: 7 inches
Opening is 3.71 meters from tank bottom
Ground Type: Concrete Ground Temperature: 28° C
Max Puddle Diameter: Unknown
Release Duration: 57 minutes
Max Average Sustained Release Rate: 546 kilograms/min
(averaged over a minute or more)
Total Amount Released: 26,181 kilograms
Note: The chemical escaped as a liquid and formed an evaporating puddle.
The puddle spread to a diameter of 71 meters.