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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 135500.015 - Employee Is Killed By Methylene Chloride Inhalation

Accident: 135500.015 -- Report ID: 0454510 -- Event Date: 03/27/2021
InspectionOpen DateSICEstablishment Name
1530065.01503/29/2021286974986 - 3v Sigma Usa Inc
At 12:00 a.m. on March 26, 2021, Employee #2, a supervisor, and Employee #3, a s ystem technician, of 3V Sigma USA Inc. began running batch processes in reactors R-402, R-403 and R-406 of the Gamma chemical plant. During the initiation of th e free-radical polymerization reaction, the Gamma control room received successi ve alarms on pump PT-4009 for low chilled water header pressure. Employees #2 an d #3 began troubleshooting in an attempt to cool the reactors. Employee #2 calle d Employee #1 for assistance. Employee #1 arrived onsite and began helping Emplo yees #2 and #3 troubleshoot. The employees were unsuccessful in stopping the exo thermic reaction. Due to high temperature and pressure inside the reactors, meth ylene chloride vapors escaped through a broken sight glass on R-404 and unsecure d hatches on mixing vessels VA-406 and VA-407. Employees #2 and #3 left the Gamm a control room due to strong vapors of methylene chloride. They witnessed Employ ee #1 inside the Gamma plant unresponsive and attempted to retrieve him. Employe e #1 was exposed to an IDLH atmosphere of methylene chloride and died of anoxic brain injury, cardiopulmonary arrest, and asphyxiation.
Keywords: asphyxiated, cardiac arrest, chemical exposure, chemical reaction, inhalation, lack of oxygen, methylene chloride, oxygen deficiency, unresponsive
Employee # Inspection Age Sex Degree Nature Occupation
1 1530065.015 43 M Fatality Occupation not reported

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