Incident date: 2016-12-14
NAICS industry code: 211111

An employee was drilling and installing a pipe into a large concrete digester when the flare went out, creating additional pressure in the digester. The pressurized digester gas shot through the short section of 6-inch pipe, knocking the employee 5 feet off a scaffold to the concrete floor. The employee was exposed to hydrogen sulfide, stopped breathing, required CPR, and suffered a shoulder injury.

Hazard classification:
code_event: title: Other fall to lower level less than 6 feet
code_source: title: Scaffolds-staging, unspecified
code_nature: title: Asphyxiations, strangulations, suffocations
code_body: title: BODY SYSTEMS
severity: moderate