How Refineries Meet OSHA Process Safety Management (PSM) Procedure Requirements

What does OSHA PSM require for operating procedures?

OSHA's Process Safety Management (PSM) standard, codified at 29 CFR 1910.119, requires facilities that handle highly hazardous chemicals above specified threshold quantities to develop and implement written operating procedures for the safe conduct of covered process activities. The operating procedures paragraph — 29 CFR 1910.119(f) — sets specific requirements for what those procedures must contain and how they must be maintained.

For refineries and other PSM-covered facilities, this isn't optional and it isn't generic — the standard is specific about what a compliant procedure program looks like.

The core requirements

OSHA PSM operating procedures must provide clear instructions for safely conducting activities involved in each covered process, consistent with the process safety information, and must address at least the following elements (29 CFR 1910.119(f)(1)):

Steps for each operating phase — 1910.119(f)(1)(i):

• Initial startup
• Normal operations
• Temporary operations
• Emergency shutdown, including the conditions under which emergency shutdown is required and the assignment of shutdown responsibility to qualified operators
• Emergency operations
• Normal shutdown
• Startup following a turnaround, or after an emergency shutdown

Operating limits — 1910.119(f)(1)(ii):

• Consequences of deviation
• Steps required to correct or avoid deviation

Safety and health considerations — 1910.119(f)(1)(iii):

• Properties of, and hazards presented by, the chemicals used in the process
• Precautions necessary to prevent exposure, including engineering controls, administrative controls, and personal protective equipment
• Control measures to be taken if physical contact or airborne exposure occurs
• Quality control for raw materials and control of hazardous chemical inventory levels
• Any special or unique hazards

Safety systems and their functions — 1910.119(f)(1)(iv)

Beyond content, the standard requires that operating procedures be readily accessible to employees who work in or maintain the process (1910.119(f)(2)), reviewed as often as necessary to assure they reflect current operating practice (1910.119(f)(3)), and certified annually as current and accurate (also 1910.119(f)(3)).

Where refinery procedure programs commonly fall short

Meeting the letter of the standard is one thing. The gaps we see most often in refinery procedure audits aren't in whether procedures exist for the required phases — most do. The gaps are in quality and usability:

Procedures that don't reflect current operation. Equipment gets modified, control systems get upgraded, and procedures don't get revised to match. The annual certification exists to catch this, but under schedule pressure it can become a signature exercise rather than a substantive review.

Ambiguous language on critical steps. OSHA requires the steps be documented; it doesn't guarantee they're documented in a way that's unambiguous under real conditions. This is where human factoring — the discipline developed in the nuclear industry — applies directly to refinery operations.

Weak place-keeping and format inconsistency. A procedure that meets the content requirements but is hard to follow under stress creates the same human performance risk in a control room as anywhere else.

Emergency and abnormal operations procedures that aren't practiced. The startup, normal-operations, and shutdown procedures get used regularly. The emergency and abnormal-operations procedures get used rarely — and when they're needed, the user is often reading them for the first time under the worst conditions.

Going beyond compliance

The refineries with the strongest procedure programs treat 29 CFR 1910.119(f) as the floor rather than the ceiling. Meeting the required content is straightforward. What raises the actual safety of the operation is applying human factoring principles to how those procedures are written, formatted, and maintained.

The good news is that OSHA itself has already acknowledged this in the standard. 29 CFR 1910.119(e)(3)(vi) requires that the process hazard analysis for a covered process address "human factors" as one of the elements evaluated. In other words, human factoring isn't a nuclear discipline being borrowed and applied to refineries — it's a required element of the OSHA PSM standard that has often been under-implemented in refinery programs.

The nuclear industry did the deepest work on operationalizing what "human factors" actually means in procedure design, and that work is codified today in the Procedure Professionals Association's AP-907-005 Procedure Writing Standard (Revision 4, December 2024) — the industry's authoritative reference for procedure writing practice. Its principles apply directly to refinery operating procedures: step structure, conditional step design, signoffs and place-keeping, notes/cautions/warnings placement, consistent formatting. Applying them is what turns a PSM-compliant document library into a genuinely usable procedure program.

Compliance keeps you legal. Human factoring keeps you safe. The best refinery procedure programs do both, and the second one is the one that actually reduces incidents.

The bottom line

OSHA Process Safety Management sets clear, specific requirements for refinery operating procedures. Meeting them is mandatory. But meeting them isn't the same as having procedures that reliably guide competent people through high-consequence work under real conditions — and the difference between compliant procedures and genuinely usable procedures is where the actual safety of the operation lives.

Quick FAQ

What does OSHA PSM require for operating procedures? 29 CFR 1910.119(f) requires written operating procedures that address steps for each operating phase (initial startup, normal operations, temporary operations, emergency shutdown, emergency operations, normal shutdown, startup following turnaround/emergency shutdown), operating limits with consequences of and steps to correct deviation, safety and health considerations including chemical properties and PPE, and safety systems and their functions. Procedures must be accessible, kept current, and certified annually.

Which facilities are covered by OSHA PSM? Facilities that handle highly hazardous chemicals above the threshold quantities specified in the standard. Refineries are covered, along with many chemical manufacturers and other process industries. The full list of covered chemicals and thresholds is in the standard's appendices.

Does meeting OSHA PSM mean my refinery is safe? Meeting PSM means you're compliant with the standard's minimum requirements. Whether the operation is actually safe depends on whether the procedures are usable under real conditions — which requires applying human factoring principles at a depth beyond what the letter of the standard explicitly spells out, though 1910.119(e)(3)(vi) does require human factors be addressed in process hazard analyses.