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### Inspection Detail

**Case Status: CLOSED**

#### **Inspection: 1530065.015 - 74986 - 3v Sigma Usa Inc**

**Inspection Information - Office: South Carolina Priv**

 

**Inspection Nr**

**Report ID**

**Date Opened**

----

**Site Address**: 			   74986 - 3v Sigma Usa Inc			   888 Woodstock StreetGeorgetown, SC 29440

**Mailing Address**: 			   888 Woodstock Street, Georgetown, SC 29440

**Union Status**: NonUnion

**SIC**:2869

**NAICS**: 325199/All Other Basic Organic Chemical Manufacturing

----

**Inspection Type**: Fat/Cat

**Scope**: Partial

**Advanced Notice**: N

**Ownership**: Private

**Safety/Health**: Health

**Close Conference**: 09/20/2021

**Emphasis**:

**Case Closed**: 02/14/2022

----

**Case Status: CLOSED**

#### **Investigation Summary**

**Investigation Nr**

**Event**

At 12:00 a.m. on March 26, 2021, Employee #2, a supervisor, and Employee #3, a system 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 the free-radical polymerization reaction, the Gamma control room received successive alarms on pump PT-4009 for low chilled water header pressure. Employees #2 and #3 began troubleshooting in an attempt to cool the reactors. Employee #2 called Employee #1 for assistance. Employee #1 arrived onsite and began helping Employees #2 and #3 troubleshoot. The employees were unsuccessful in stopping the exothermic reaction. Due to high temperature and pressure inside the reactors, methylene chloride vapors escaped through a broken sight glass on R-404 and unsecured hatches on mixing vessels VA-406 and VA-407. Employees #2 and #3 left the Gamma control room due to strong vapors of methylene chloride. They witnessed Employee #1 inside the Gamma plant unresponsive and attempted to retrieve him. Employee #1 was exposed to an IDLH atmosphere of methylene chloride and died of anoxic brain injury,

**Keywords:**asphyxiated, cardiac arrest, chemical exposure, chemical reaction, inhalation, lack of oxygen, methylene chloride, oxygen deficiency, unresponsive
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