Safety Incidents OSHA Severe Injury Reports · 2015–2025
2,004,209Inspections Most recent open 2026-07-13 Last loaded 2026-07-17

OSHA Inspection: SIGMA MECHANICAL CONTRACTORS

Complaint inspection · Safety discipline

On , OSHA opened a complaint safety inspection of SIGMA MECHANICAL CONTRACTORS in 2200 BASS PRO COURT, GRAPEVINE, TX 76051 (NAICS 238220). OSHA activity number 339052318.

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Site address
2200 BASS PRO COURT
City
GRAPEVINE
State
TX
ZIP
76051
Mailing
5936 EDEN DR., HALTOM CITY, TX 76117
Inspection type
Complaint (B)
Scope
Partial (B)
Discipline
Safety
Advance notice
No
Union status
B
Opened
Closing conference
Case closed
Last modified
Data loaded
NAICS code
238220
Employees
42
Ownership type
A

2 citations on file for this inspection.

1926.800 D

Serious Gravity 1 1 instance 3 exposed
Issued
Abate by
Penalty
Initial $2100.00 · Current $1260.00 Reduced
29 CFR 1926.800(d): Employees were not instructed in the recognition and avoidance of hazards associated with underground construction activities:  On or about April 29, 2013, employees performing construction and sewer line relocation activities inside a 4.7 feet high, 5 feet wide and 20 feet deep tunnel below the hotel concrete foundation were not provided specific safety training and instructions prior to entry including but not limited to, proper ventilation requirements, mechanical equipment location and usage, personal protective equipment, and emergency procedures including confined space entry/egress, shoring, and ground support.  Employees were exposed to asphyxiation and cave in hazards.
Recent events (2)
  • — I (S) $1260
  • — Z (S) $2100

1926.800 K01 I

Serious Gravity 1 1 instance 2 exposed
Issued
Abate by
Penalty
Initial $2100.00 · Current $1260.00 Reduced
29 CFR 1926.800(k)(1)(i): Fresh air was not supplied to all underground construction work areas in sufficient quantities to prevent dangerous or harmful accumulation of dusts, fumes, mists, vapors, or gases:   On or about April 29, 2013, employees performing construction and sewer line relocation activities inside a 4.7 feet high, 5 feet wide and 20 feet deep tunnel below the hotel concrete foundation were not provided fresh air circulated ventilation when the Air Systems International confined space blower used, was located at the entrance of the tunnel supplying recirculated atmospheric air from the tunnel.  Employees were exposed to asphyxiation hazards.
Recent events (2)
  • — I (S) $1260
  • — Z (S) $2100

This record is reproduced from the U.S. Department of Labor Open Data API (OSHA inspection dataset). The original IMIS detail view is available at OSHA's Establishment Search for activity number 339052318.