OHST study plan

OHST · Give each week a clear focus.

8 weeks · About 6 hours per week

Week 1

Safety and Health Program Management

Map the core elements of a written safety and health program (policy, roles and responsibilities, hazard analysis, controls, training, communication, incident investigation, program evaluation) onto a one-page diagram.
Draft a management-commitment/policy statement containing at least three measurable objectives and a named accountable person.
Distinguish leading from lagging indicators and produce four examples of each.
Calculate TRIR and DART rate from a supplied scenario of hours worked and recordable cases.
Build a 20-card flashcard set covering recordkeeping thresholds, training obligations, and roles of the safety professional versus line management.

One-page program-element map plus a 10-question self-quiz scored at 80% or higher.

Week 2

Sequence an incident investigation from scene control through evidence gathering, causal analysis, and corrective-action tracking.
Write SMART corrective actions for three sample audit findings and assign an owner and due date to each.
Outline a hazard-identification walkthrough checklist spanning chemical, physical, ergonomic, machine/energy, and biological categories.
Rank six sample controls against the hierarchy of controls and justify each placement in one sentence.
Explain how employee involvement and hazard reporting are documented inside a program.

Completed 30-line hazard-identification checklist and an investigation report template with a root-cause section; self-quiz at 80% or higher.

Week 3

Perform a job hazard analysis for a task with at least eight steps, listing controls at each step.
Apply the hierarchy of controls to five scenario descriptions and defend the selected control.
Recite and apply the energy-control (lockout/tagout) sequence to a machine servicing scenario.
Identify the entry triggers for confined space, fall protection, and machine guarding in three sample worksite descriptions.
Assemble a PPE selection matrix for eyes, hands, feet, head, and hearing across four tasks.

One fully completed JHA with control matrix plus 25 practice questions scored at 80% or higher.

Week 4

Define TWA, STEL, ceiling, and PEL and convert concentrations between ppm and mg/m3 using molecular weight.
Select an appropriate sampling approach (sorbent tube, colorimetric detector, direct-reading instrument) for five agents and justify each choice.
Interpret five sample exposure results against the applicable occupational exposure limit and state a defensible conclusion.
Describe the components and function of a local exhaust ventilation system and critique capture effectiveness in a described setup.
Describe the exposure-assessment strategy of similar exposure groups and basic characterization.

Exposure assessment worksheet for five agents with sampling rationale and OEL comparisons, plus 25 practice questions at 80% or higher.

Week 5

Compute a noise TWA from a dose measurement, apply the 3-dB exchange rate, and determine when a hearing conservation program is triggered.
Apply WBGT-based heat stress controls including acclimatization and work/rest scheduling to a described job.
Match respirator type, assigned protection factor, and cartridge to five contaminant scenarios and state fit-testing and medical-evaluation requirements.
Differentiate dilution ventilation from local exhaust ventilation and select the right approach for three scenarios.
Re-drill the two weakest hazard-control topics identified in the week 3 quiz.

Noise, heat, and respiratory problem set of 20 calculations/decisions scored at 85% or higher.

Week 6

Outline the required elements of an emergency action plan, including evacuation routes, accounting for employees, and assigned duties.
Apply the fire tetrahedron and fire classification scheme to select the correct extinguisher for six scenarios.
Sequence extinguisher use and describe when to abandon firefighting and evacuate.
Compare detection, alarm, and suppression options (sprinkler types, standpipe, special systems) for three occupancy types.
Design and run a 30-minute tabletop exercise for one credible emergency scenario.

Two-page emergency action plan outline, extinguisher selection table, and tabletop after-action notes; 25 practice questions at 80% or higher.

Week 7

Classify five waste streams using the hazardous-waste characteristics and determine generator status for a described facility.
Identify the permit and reporting triggers for air emissions, wastewater discharge, and stormwater at a sample site.
Match EPCRA reporting thresholds, SDS collection, and chemical inventory duties to a facility profile.
Rank pollution-prevention options from source reduction to disposal for three waste scenarios.
Build an environmental aspects and impacts register covering at least ten activities.

Aspects and impacts register with a regulatory applicability matrix for one facility profile, plus 25 practice questions at 80% or higher.

Week 8

Complete a full-length timed mock exam under exam-day conditions and record the score by domain.
Convert every missed item into an error-log entry stating the underlying concept gap and the corrected reasoning.
Re-study the two lowest-scoring domains using the error log as the study guide.
Condense all formulas, definitions, and decision rules onto a single one-page reference sheet.
Rehearse a 60-second verbal explanation of each domain's core framework to confirm recall.

Timed 100-question mock scored at 80% or higher, plus a 15-item error log with remediation notes and a one-page formula sheet.

Week 2: Can diagram the safety and health program elements from memory and score 80% or higher on a 20-question domain 1 quiz.

Week 4: Can complete a JHA and rank controls unaided, and score 80% or higher on a combined 30-question domain 1/3 quiz.

Week 6: Can convert ppm to mg/m3, compute a noise TWA, and select a respirator correctly in a 20-question domain 2 check at 85% or higher.

Week 8: Timed full-length mock at 80% or higher with no domain below 70%.