# Third or fourth degree heat (thermal) burns at Keystone Petroleum Equipment, LTD.
> OSHA SIR `2021032382` · 3/19/2021 · MECHANICSBURG, PENNSYLVANIA
## Severity
- **1 hospitalization**
- **Body part:** Multiple body parts, unspecified
- **Nature of injury:** Third or fourth degree heat (thermal) burns
## Cause
- **Event:** Small-scale (limited) fire
- **Source:** Containers-pressurized, n.e.c.
## Employer
- **Name:** Keystone Petroleum Equipment, LTD.
- **Location:** 981 West Trindle Road, MECHANICSBURG, PENNSYLVANIA, 17055
- **NAICS:** 238990
- **Jurisdiction:** 1
## Narrative

Two employees were replacing the threads on a 4-inch riser tube on an underground storage tank. The tank flashed over and blew the manway off. One of the employees suffered third-degree burns on 50 percent of their skin surface.

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*Source: [OSHA Severe Injury Reports](https://www.osha.gov/severe-injury-reports) · MORVS · CC0 1.0*