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Occupational Safety and Health Administration OSHA

Inspection Detail

Case Status: CLOSED
Inspection: 1252391.015 - 95735 - Master Mechanical Inc

Inspection Information - Office: Minnesota

Nr: 1252391.015Report ID: 0552700Open Date: 08/03/2017

95735 - Master Mechanical Inc
3100 W River Pkwy
Minneapolis, MN 55406
Union Status: Union
NAICS: 238220/ Plumbing, Heating, and Air-Conditioning Contractors
Mailing: 7300 Metro Blvd #500, Minneapolis, MN 55439

Inspection Type:Unprog Rel
Scope:Partial Advanced Notice:N
Safety/Health:Safety Close Conference:01/04/2018
Close Case:06/22/2020

Related Activity:TypeIDSafetyHealth
Case Status: CLOSED

Violation Summary
Serious Willful Repeat Other Unclass Total
Initial Violations 2 2
Current Violations 1 1 2
Initial Penalty $50,000 $0 $0 $0 $0 $50,000
Current Penalty $25,000 $0 $0 $5,000 $0 $30,000
FTA Amount $0 $0 $0 $0 $0 $0

Violation Items
# ID Type Standard Issuance Abate Curr$ Init$ Fta$ Contest LastEvent
  1. 01001 Other 19260021 B02 01/12/2018 02/05/2018 $5,000 $25,000 $0 01/31/2018 F - Formal Settlement
  2. 01002 Serious 52070600 01/12/2018 02/05/2018 $25,000 $25,000 $0 01/31/2018 F - Formal Settlement

Accident Investigation Summary
Summary Nr: 99532.015Event: 08/02/2017Two Employees Are Killed By Natural Gas Explosion
On August 2, 2017, two sub-contracted employees were working to relocate natural gas meters and connect new piping. The two workers were working in the sub-basement level ("meter room") disconnecting a portion of pipe adjacent to the shut-off valve when a natural gas leak occurred filling the room with gas and ultimately resulting in a large explosion. Consequently, two school employees were fatally injured with a total of nine employee hospitalizations.
Keywords: explosion, natural gas
Inspection Degree Nature Occupation
1 1252391.015 Fatality Other Occupation not reported
2 1252391.015 Fatality Other Occupation not reported

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