A job safety analysis (JSA), also called a job hazard analysis, is the practice of breaking a task into its steps, identifying what could harm someone at each step, and agreeing the controls before work starts. It is the working-level companion to permits and lockout: those authorize and isolate, the JSA thinks the job through.
A JSA is deliberately simple: steps, hazards, controls. The craft is in the granularity. "Replace pump" is not a step; "break coupling guard bolts loose overhead" is, and it carries different hazards (falling parts, awkward posture, stored spring energy) than "drain casing" (hot fluid, residual pressure, slips). Most JSA failures are granularity failures: steps so coarse the real exposure hides between the lines.
Task: replace the mechanical seal on a 90 degree process pump. Selected steps and controls: isolate and lock out per procedure (LOTO, verify zero energy); drain casing, hazard: 90 degree fluid, control: cool-down hold and face shield plus gloves rated for the temperature; break flange bolts, hazard: trapped pressure, control: crack the far-side bolt first behind the flange; lift bearing housing, hazard: 40 kg awkward lift, control: two-person lift with the shop crane; solvent-clean seal faces, hazard: vapors, control: ventilation and the specified respirator. Ten minutes of structured thinking, and the two injuries this job has actually caused elsewhere, a scald and a back strain, both have named controls owned by named people.
Controls should be selected down the hierarchy of controls: eliminate or substitute where possible, engineer the exposure away next, and lean on procedures and PPE only for what remains. A JSA whose every control is "wear PPE and be careful" has documented the hazards and controlled none of them.
The three are often confused because they meet on the same job. The permit to work authorizes the job and its conditions; lockout physically isolates energy; the JSA plans the task itself, step by step. On routine work the JSA may live as a standing document reviewed at the toolbox talk; on non-routine work it should be written fresh, by the people doing the job, on the day.
Fabrico puts the JSA in the flow of work: attached to the work order type so it opens with the job on the technician’s phone, acknowledged at the point of work, and versioned so reviews after incidents actually propagate. Hazard notes recorded during the job stay on the asset history, which is how the next revision gets smarter. Fabrico does not write the analysis, your crews do; it makes sure the analysis and the work travel together. EU-built, with EU data residency.
Prioritize non-routine work, tasks with injury history, jobs involving hazardous energy or materials, and anything new. Mature programs cover the routine high-frequency jobs too, because frequency multiplies even small exposures.
Scope and altitude. A risk assessment can cover a whole process or site and often quantifies. A JSA is task-level and practical: this job, these steps, these hazards, these controls, agreed by the people doing it today.
The workers performing the task and the supervisor responsible for it. The signatures are not bureaucracy; they mark that the conversation happened and the controls were accepted by the people exposed.
Want JSAs that arrive with the work order instead of living in a binder? Book a Fabrico demo to see safety documents, checklists, and evidence flow through a field-ready CMMS.
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