Incident date: 2017-06-21
NAICS industry code: 322110

An employee was unlocking a digester that had been shut down for maintenance. As he was conducting the unlocking procedure, an automatic valve was in the open position, allowing the digester acid to drain through the drain valves and thereby causing the release of sulfur dioxide. He suffered respiratory irritation from sulfur dioxide exposure and was hospitalized.

Hazard classification:
code_event: title: Inhalation of harmful substance-single episode
code_source: title: Sulfur dioxide
code_nature: title: Other respiratory system symptoms-toxic, noxious, or allergenic effect
code_body: title: BODY SYSTEMS
severity: moderate