Incident date: 2017-01-09
NAICS industry code: 211111

An employee was preparing to shoot a fluid level on a well. He screwed an echo gun onto the well casing and opened the casing valve. When the pressure hit the gun, the outside of the casing valve threads failed and the pressure popped, releasing H2S (hydrogen sulfide) gas into the employee's face.

Hazard classification:
code_event: title: Inhalation of harmful substance-single episode
code_source: title: Hydrogen sulfide
code_nature: title: Poisoning, toxic, noxious, or allergenic effect, unspecified
code_body: title: BODY SYSTEMS
severity: moderate