By Marcell Owens, Owner, McCray Law Firm, PLLC · Houston, Texas
An OSHA refinery investigation is not the only investigation running after a plant accident, and understanding what each one produces is more useful to an injured worker than knowing what any of them concluded.
After a serious incident at a Texas refinery or chemical plant, three separate processes typically begin. The operator conducts its own investigation, because federal law requires it. OSHA may inspect and enforce. And the U.S. Chemical Safety and Hazard Investigation Board may investigate independently. They have different authority, different purposes, and different outputs.
The value to a case is not the conclusion any of them reaches. It is the documents that have to exist because they ran.
At McCray Law Firm we treat this as a records inventory rather than a hunt for a verdict from an agency. And one clarification belongs at the top, because this article is going to be careful about it throughout: whether any particular agency finding, citation, or report can be used as evidence in a civil case is a separate legal question that depends on the circumstances. This article is about what exists and who holds it, not about what a jury will see.
The operator’s own investigation, and the 48-hour rule
Start here, because it is the requirement that most changes how the first weeks after an accident should be spent.
Under 29 CFR 1910.119(m), part of OSHA’s Process Safety Management standard, employers shall investigate each incident which resulted in, or could reasonably have resulted in, a catastrophic release. That investigation must be initiated as promptly as possible, but not later than 48 hours after the incident. The resulting reports must be retained for five years.
Three consequences follow, and they are all practical.
A written investigation report very likely exists. It was created contemporaneously, within two days of the event, while the scene and the recollections were fresh. And there is a federal retention obligation covering it for five years.
That is a materially different situation from hoping someone wrote something down.
It is also the strongest argument for early legal involvement. The report existing and the report being reached are two different things. Records like this come out through preservation demands and formal discovery in a legal claim, not by an injured worker asking the plant for a copy.
What the PSM standard requires the operator to have on hand
The incident investigation is one document in a larger required set. The rest of it describes what the operator knew, what it maintained, and what it changed — which is usually where a negligence theory actually lives.
Process safety information — 29 CFR 1910.119(d). A written compilation identifying the hazards of the chemicals used, details of the process technology, and information about the equipment. This is the record of what was understood about the hazard before the incident.
Mechanical integrity — 29 CFR 1910.119(j). Written procedures to maintain the integrity of equipment; training for maintenance personnel; inspections and tests performed in accordance with manufacturers’ recommendations; correction of deficiencies before further use of the equipment; and quality assurance for fabrication, installation, and materials. Every one of those obligations generates records, and the requirement to correct deficiencies before further use is a specific standard against which a decision to keep operating can be examined.
Management of change — 29 CFR 1910.119(l). Written procedures to manage modifications to process chemicals, technology, equipment, and procedures — other than replacements in kind — with the safety and health impact reviewed and authorized before implementation. When a plant changed a process and something failed afterward, there is either a documented pre-implementation review or a documented absence of one. Both are informative, and this is one of the least used angles in the vertical.
Applicability. The standard applies to processes involving highly hazardous chemicals at or above the threshold quantities listed in its Appendix A, and to Category 1 flammable gases and flammable liquids with a flashpoint below 100°F in quantities of 10,000 pounds or more. Whether it applied to the specific process that caused a specific injury is a technical question that requires the records and often an expert. It is not something to assume covers every unit in every plant.
An OSHA refinery investigation is not a CSB investigation
This confusion is widespread, and it leads families to expect the wrong outcome from the wrong agency.
OSHA is the enforcement agency. It inspects, and it can issue citations and penalties. Its authority is regulatory.
The U.S. Chemical Safety and Hazard Investigation Board is an independent federal agency that investigates accidental chemical releases resulting in fatalities, serious injuries, or substantial property damage. It is explicitly nonregulatory, and by its own description, the CSB does not issue fines or citations. Its work is root-cause investigation and recommendations.
So the two produce different things. OSHA enforcement activity produces an inspection and enforcement record. A CSB investigation produces a technical root-cause examination and recommendations, with no citation and no penalty attached.
Neither one decides your civil case. And again: whether findings from either agency are admissible in a civil proceeding is a separate legal question. The reason to care about them is that their existence tends to generate and formalize a factual record, and their involvement signals the severity of what happened.
Two agencies. Different jobs. Neither one is your lawyer.
The full records inventory in a plant case
Beyond the PSM set, this is what a serious plant case reaches for. Almost none of it is accessible to an injured worker directly.
From the operator:
- The incident investigation file, including the report required within 48 hours
- Process safety information for the unit
- Mechanical integrity records: inspections, tests, repairs, and deficiency reports
- Management of change documentation for any modification to the process
- Operating procedures and any deviations authorized
- Control system data, alarm history, and process historian data
- Radio and communication records
- Prior incidents, near-misses, and internal audit findings for the same unit
- Training and qualification records
- Contractor safety program documents and site orientation records
From the contracting structure:
- The contract between the plant owner and the general contractor
- The contract between the general contractor and the injured worker’s employer
- Certificates of insurance and any owner-controlled or contractor-controlled insurance program documents
- Badge and access records establishing which companies were on the unit
- Permits, job safety analyses, and safety meeting sign-in sheets
- Daily reports and crew rosters
Physical evidence:
- The failed component itself, identified by part and serial number where available
- The equipment as it existed before repair
- Photographs taken before cleanup
From agencies:
- OSHA inspection and enforcement records
- CSB investigation materials, where the Board investigated
The contracting documents matter as much as the technical ones, because they decide whether a company is a third party or a statutory employer. Under Section 406.123 of the Texas Labor Code, a written agreement under which the general contractor provides workers’ compensation coverage makes that contractor the employer of the subcontractor’s employees for those purposes — a point covered in our guide to contractor or employee status in a Texas plant injury claim.
What a pattern changes
One category of record deserves separate attention, because it converts a case from an argument about one bad day into an argument about a known risk.
Prior incidents. Near-misses in the same unit. Repeat failures on the same equipment or the same class of component. Internal audit findings that flagged a condition. Deficiencies documented and then not corrected.
The mechanical integrity requirements at 29 CFR 1910.119(j) include correcting deficiencies before further use of the equipment. Management of change at 1910.119(l) requires a documented pre-implementation review of a modification’s safety impact. Incident investigation at 1910.119(m) requires investigating incidents that resulted in, or could reasonably have resulted in, a catastrophic release — which by its own terms reaches events where nobody was hurt.
Read together, those obligations mean a plant that experienced a near-miss should have a record of it, and a plant that documented a deficiency should have a record of what happened next.
An isolated failure and a documented history of the same failure are not the same case. One is about an event. The other is about what was known, when it was known, and what was decided.
This is also the category least likely to surface on its own. It is not in the incident report for your accident, because it predates your accident. It comes from asking for it specifically.
Why the retention rules are not a reason to relax
Five years of required retention for incident investigation reports sounds like a comfortable margin. It is not, for two reasons.
The retention rule covers one category of document, not the case. Control system and process historian data ages and cycles. Radio recordings are not kept indefinitely. Badge and access records have their own schedules. And the physical evidence — the failed component, the equipment as it stood — follows no retention rule at all. It gets repaired, replaced, sent to a lab, or scrapped so a unit can return to service.
And the legal deadline runs independently. Personal injury claims in Texas are generally subject to a two-year period under Section 16.003(a) of the Texas Civil Practice and Remedies Code, and a death action generally within two years of the date of death under Section 16.003(b). Workers’ compensation deadlines are separate and can be shorter. A document that still exists is worth nothing if the claim has expired.
The window that closes first is always the physical one. Our guide to what to do after a refinery explosion in Texas covers the first 72 hours, and the wrongful death statute of limitations in Texas covers the timing rules when someone did not survive.
What we do with the record
- Preservation demands first, aimed at the equipment, the failed component by part number, and the entire PSM record set, before a unit returns to service.
- We request the contracts alongside the technical records, because status determines who can be sued.
- We build the roster of every company on the unit from badge, permit, and sign-in records.
- We look for prior incidents and near-misses in the same unit, on the same equipment, or in the same task. A pattern is a different case than an isolated failure.
- We retain process safety, metallurgy, and origin-and-cause experts to translate the record into an explainable breach.
- We track agency activity without depending on it, because an agency’s conclusion is not a substitute for building the case.
Your job is to get treatment and keep what you already have. Our job is to reach a record you cannot request yourself.
Key takeaways
- A written investigation report very likely exists. Under 29 CFR 1910.119(m), the investigation of a qualifying incident must be initiated no later than 48 hours after it, and reports are retained five years.
- The PSM standard requires a whole record set: process safety information under (d), mechanical integrity under (j), and management of change under (l).
- Mechanical integrity includes correcting deficiencies before further use — a specific standard for examining a decision to keep operating.
- Management of change is underused. A modification requires a documented pre-implementation safety review.
- OSHA and the CSB are different. OSHA enforces and can cite; the CSB is independent, nonregulatory, and does not issue fines or citations.
- Admissibility is a separate question. Knowing a document exists is not the same as knowing a jury will see it.
- Existence is not access. These records are reached through preservation demands and discovery, not by asking the plant.
Frequently Asked Questions
Does the refinery have to investigate my accident?
Under 29 CFR 1910.119(m), employers shall investigate each incident which resulted in, or could reasonably have resulted in, a catastrophic release, and the investigation must be initiated as promptly as possible and not later than 48 hours after the incident. Reports are retained for five years. Whether the standard applied to the specific process involved in your injury is a technical question that depends on the chemicals and quantities at issue.
Can I get a copy of the plant’s investigation report?
Generally not by requesting it as an injured worker. Records of this kind are reached through preservation demands and formal discovery within a legal claim. The reason the 48-hour and five-year requirements matter is that they establish that a contemporaneous document should exist and should still be in existence — which is the foundation for demanding it, not a right to walk up and collect it.
If OSHA cites the plant, does that prove my case?
No. An OSHA citation is a regulatory enforcement action, while civil liability is decided under state negligence law, and the two ask different questions. Whether a citation or investigative finding is admissible in a civil case is itself a legal question that depends on the circumstances. What is reliably useful is the underlying factual record — inspection files, integrity records, change documentation — which is reached through discovery.
What is the difference between OSHA and the CSB?
OSHA is the enforcement agency and can issue citations and penalties. The U.S. Chemical Safety and Hazard Investigation Board is an independent federal agency that investigates accidental chemical releases involving fatalities, serious injuries, or substantial property damage, and it is explicitly nonregulatory — it does not issue fines or citations. Its output is root-cause investigation and recommendations.
The CSB is investigating my accident. Does that help me?
CSB involvement generally signals a serious incident and tends to formalize a detailed technical record. It does not decide your civil claim, it produces no citation or penalty, and whether its materials can be used as evidence in a civil case is a separate legal question. It is a reason to make sure your own case is being built independently rather than a reason to wait for the Board’s conclusions.
Should I wait for the investigations to finish before talking to a lawyer?
No, and this is the most costly form of waiting we see. Agency investigations can take a long time, while the physical evidence at the plant — the failed component, the equipment as it stood — follows no retention rule and is disposed of so a unit can return to service. Legal deadlines also run independently, generally two years for a personal injury claim under Section 16.003(a) of the Texas Civil Practice and Remedies Code. Preservation demands cannot be sent backward.
What single record matters most?
There is no universal answer, but in practice two categories decide most plant cases: the mechanical integrity file for the equipment that failed, including any documented deficiency, and the contracts that determine which companies are third parties rather than your statutory employer. Our guide to who is liable in a Texas refinery accident works through the party map that second category creates.
This article is for informational purposes only and does not constitute legal advice, and reading it does not create an attorney-client relationship. Whether a federal standard applied to a particular process, and whether any agency record or finding is admissible in a civil proceeding, are case-specific questions requiring the records and legal analysis. McCray Law Firm, PLLC is licensed to practice in Texas and is admitted in the U.S. District Court for the Southern District of Texas. If you believe you may have a claim, speak with a licensed attorney about your situation before any deadline passes.
About the author. Marcell Owens is the owner of McCray Law Firm, PLLC in Houston, Texas. He earned his J.D. cum laude from Texas Southern University’s Thurgood Marshall School of Law and has been licensed to practice in Texas since 2015. He is admitted in Texas and in the U.S. District Court for the Southern District of Texas, and was included in the Top 40 Under 40 National Black Trial Lawyers. He works with a team of attorneys handling personal injury and wrongful death matters across Texas.
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