Safety Incidents OSHA Severe Injury Reports · 2015–2025
5,189,992Inspections Most recent open 2026-07-18 Last loaded 2026-07-22

OSHA Inspection: TESORO REFINING & MARKETING COMPANY, LLC

Planned inspection · Health discipline

On , OSHA opened a planned health inspection of TESORO REFINING & MARKETING COMPANY, LLC in 900 OLD RED TRAIL NE, MANDAN, ND 58554 (NAICS 324110). OSHA activity number 343455564.

What this inspection record means

OSHA opens inspections for many reasons — routine scheduling under a national or local emphasis program, an employee complaint or referral, or a follow-up after a reported injury. Opening or conducting an inspection is not itself an allegation or a finding that this employer broke any rule; any findings appear as the citations listed below, and citations can be contested, reduced, or withdrawn.

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Site address
900 OLD RED TRAIL NE
City
MANDAN
State
ND
ZIP
58554
Mailing
900 OLD RED TRAIL NE, MANDAN, ND 58554
Inspection type
Planned (H)
Scope
Partial (B)
Discipline
Health
Advance notice
No
Union status
B
Opened
Closing conference
Case closed
Last modified
Data loaded
NAICS code
324110
Employees
500
Ownership type
A

1 citation on file for this inspection.

1910.119 J04 II

Other-than-serious 2 instances 8 exposed
Issued
Mar 4, 2019
Abate by
Apr 8, 2019
Penalty
Initial $13,260 · Current $13,260

Hazardous substances 2037

29 CFR 1910.119(j)(4)(ii): The employers inspection and testing procedures did not follow recognized and generally accepted good engineering practices:    (a) On or about September 11, 2018 and at times prior, for employees exposed to potential process hazards where the employer failed to ensure process piping and pressure vessel wall thickness measurements used for corrosion rate determinations were taken at the thinnest examination point within condition monitoring locations at or near, 900 Old Red Trail NE in Mandan, ND.    (b) On or about September 11, 2018 and at times prior, for employees exposed to potential process hazards where the employers minimum wall thickness data used in process piping and pressure vessel remaining life calculations was inaccurate at or near, 900 Old Red Trail NE in Mandan, ND.
Recent events (3)
  • — J (O) $13260
  • — C (S) $13260
  • — Z (S) $13260

View Tesoro Refining & Marketing Company, LLC's full OSHA safety record →

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 343455564.

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