OSHA Inspection: UNITED STATES STEEL CORPORATION

Issued

Feb 9, 2026

Abate by

Feb 20, 2026

Penalty

Initial $16,550 · Current $16,550

General-duty citation text

29 CFR 1910.119(d)(2)(i)(C): Information concerning the technology of the process did not include a maximum intended inventory of highly hazardous chemicals:  a) At the Clairton Plant, on or about August 11, 2025 - The employer's information concerning the technology of the process did not include the maximum intended inventory of coke oven gas in the Underfire System, Foul Gas System, Chemical Processing System, and Down River System which include PHOSAM Absorbers, Regenerators, piping, and various other process equipment. Failure to include the maximum intended inventory of coke oven gas in the information concerning the technology of the process exposed employees working in and around the process to an explosion hazard when cryogenically-processed coke oven gas was released from 13 Pad Valve.

Issued

Feb 9, 2026

Abate by

Mar 27, 2026

Penalty

Initial $16,550 · Current $16,550

General-duty citation text

29 CFR 1910.119(e)(6): The employer did not update and revalidate by a team meeting the requirements in paragraph (e)(4) of this section, to assure that the process hazard analysis is consistent with the current process, at least every five (5) years after the completion of the initial process hazard analysis:   a) At the Clairton Plant, on or about August 11, 2025 - The employer did not update and revalidate the 1998 Underfire Gas System Operability and PHA Report at least every five years. The most recent updated and revalidated process hazard analysis of the Underfire Gas System was conducted in November of 2018. Failure to update and revalidate the initial PHA of the Underfire Gas System at least every five years exposed employees working in and around the process to an explosion hazard when cryogenically-processed coke oven gas was released from 13 Pad Valve.

Issued

Feb 9, 2026

Abate by

Feb 20, 2026

Penalty

Initial $16,550 · Current $16,550

General-duty citation text

29 CFR 1910.119(f)(4): The employer did not develop and implement safe work practices to provide for the control of hazards during operations such as lockout/tagout; confined space entry; opening process equipment or piping; and control over entrance into a facility by maintenance, contractor, laboratory, or other support personnel:   a) In the 13, 14 Battery Transfer Area Pad Valve Pit, on or about August 11, 2025 - The employer did not develop and implement safe work practices such as lockout/tagout for the control of chemical energy while employees cleaned the seat of 13 Pad Valve with water when cryogenically-processed coke oven gas was present in the valve and Underfire lines. This exposed employees washing the valve, as well as other employees working on or adjacent to the 13, 14 Battery Transfer Area to an explosion when 13 Pad Valve ruptured during washing and released cryogenically-processed coke oven gas from the Underfire lines.

Issued

Feb 9, 2026

Abate by

Feb 20, 2026

Penalty

Initial $0 · Current $0

General-duty citation text

29 CFR  1910.147(c)(4)(ii): Procedures did not clearly and specifically outline the scope, purpose, authorization, rules, and techniques to be utilized for the control of hazardous energy, and the means to enforce compliance including, but not limited to, 29 CFR 1910.147(c)(4)(ii)(A), (c)(4)(ii)(B), (c)(4)(ii)(C) and (c)(4)(ii)(D):   a) In the 13, 14 Battery Transfer Area Pad Valve Pit, on or about August 11, 2025 - The employer's procedures for the control of hazardous energy did not clearly and specifically outline the scope, purpose, authorization, rules, and techniques to be used to control chemical energy when employees cleaned the seat of 13 Pad Valve with water when cryogenically-processed coke oven gas was present in the valve and Underfire lines. This exposed employees washing the valve, as well as other employees working in or adjacent to the 13, 14 Battery Transfer Area to an explosion when 13 Pad Valve ruptured during washing and released cryogenically-processed coke oven gas from the Underfire lines.

Issued

Feb 9, 2026

Abate by

Feb 20, 2026

Penalty

Initial $16,550 · Current $16,550

General-duty citation text

29 CFR 1910.119(j)(2): The employer did not establish written procedures to maintain the on-going integrity of process equipment:   a) In the 13, 14 Battery Transfer Area Pad Valve Pit, on or about August 11, 2025 - The employer did not establish written procedures to maintain the on-going integrity of 13 Pad Valve. This exposed employees washing the valve, as well as other employees working on or adjacent to the 13, 14 Battery Transfer Area to an explosion when 13 Pad Valve ruptured during washing and released cryogenically-processed coke oven gas from the Underfire lines.

Issued

Feb 9, 2026

Abate by

Feb 20, 2026

Penalty

Initial $16,550 · Current $16,550

General-duty citation text

29 CFR 1910.119(j)(3): The employer did not train each employee involved in maintaining the on-going integrity of process equipment in the procedures applicable to the employee's job tasks to ensure that the employee can perform the job tasks in a safe manner:   a) In the 13, 14 Battery Transfer Area Pad Valve Pit, on or about August 11, 2025 - The employer did not train each employee involved in maintaining the on-going integrity of 13 Pad Valve in the procedures applicable to wash the valve with water to ensure that the employee can perform the wash in a safe manner. This exposed employees washing the valve, as well as other employees working on or adjacent to the 13, 14 Battery Transfer Area to an explosion when 13 Pad Valve ruptured during washing and released cryogenically-processed coke oven gas from the Underfire lines.

Issued

Feb 9, 2026

Abate by

Feb 20, 2026

Penalty

Initial $0 · Current $0

General-duty citation text

29 CFR 1910.147(c)(7)(i): The employer did not provide training to ensure that the purpose and function of the energy control program are understood by employees and that the knowledge and skills required for the safe application, usage, and removal of the energy controls are acquired by employees:  a) In the 13, 14 Battery Transfer Area Pad Valve Pit, on or about August 11, 2025 - The employer did not ensure that the knowledge and skills required for the safe application and usage of 13 Pad Valve energy controls were acquired by employees who cleaned the seat of 13 Pad Valve with water when cryogenically-processed coke oven gas was present in the valve and Underfire lines. This exposed employees washing the valve, as well as other employees working in or adjacent to the 13, 14 Battery Transfer Area to an explosion when 13 Pad Valve ruptured during washing and released cryogenically-processed coke oven gas from the Underfire lines.

Issued

Feb 9, 2026

Abate by

Feb 20, 2026

Penalty

Initial $16,550 · Current $16,550

General-duty citation text

29 CFR 1910.147(d)(3): All energy isolating devices that were needed to control the energy to the machine or equipment were not physically located and operated in such a manner as to isolate the machine or equipment from the energy source(s):  a) In the 13, 14 Battery Transfer Area Pad Valve Pit, on or about August 11, 2025 - The employer did not ensure energy isolating devices were operated in a manner to isolate 13 Pad Valve from cryogenically-processed coke over gas while employees cleaned the seat of 13 Pad Valve with water when cryogenically-processed coke oven gas was present in the valve and Underfire lines. As a result, the remaining applicable energy control elements involving LOTO device application (d)(4), stored energy (d)(5), and verification of isolation (d)(6), were not implemented to safeguard employees from the 13 Pad Valve washing hazards. This exposed employees washing the valve, as well as other employees working in or adjacent to the 13, 14 Battery Transfer Area to an explosion when 13 Pad Valve ruptured during washing and released cryogenically-processed coke oven gas from the Underfire lines.

Issued

Feb 9, 2026

Abate by

Feb 20, 2026

Penalty

Initial $16,550 · Current $16,550

General-duty citation text

29 CFR  1910.147(f)(2)(i): When outside servicing personnel were engaged in activities in a facility, the onsite employer and the outside employer did not inform each other of their respective lockout or tagout procedures:   a) In the 13, 14 Battery Transfer Area Pad Valve Pit, on or about August 11, 2025 - The employer did not inform MPW Industrial Services, Inc. of their 13 Pad Valve lockout or tagout procedures when MPW Industrial Services, Inc. employees engaged in cleaning the seat of 13 Pad Valve with water when cryogenically-processed coke oven gas was present in the valve and Underfire lines. This exposed employees washing the valve, as well as other employees working in or adjacent to the 13, 14 Battery Transfer Area to an explosion when 13 Pad Valve ruptured during washing and released cryogenically-processed coke oven gas from the Underfire lines.

Issued

Feb 9, 2026

Penalty

Initial $2,364 · Current $2,364

General-duty citation text

29 CFR  1904.40(a): The employer did not provide an authorized government representative the records within the four business hours:   a) On or about September 19, 2025 - On August 20, 2025, the OSHA Form 301 Incident Reports for calendar years 2023, 2024, and 2025 were requested from the employer. The employer did not provide an authorized government representative the OSHA Form 301 Incident Reports, or their equivalents, for the eight injuries resulting from the August 11, 2025 explosion in the 13, 14 Battery Transfer Area recorded on the 2025 OSHA 300 Log until February 5, 2026.