CRSS key terms

A structured set of policies, plans, procedures, and review activities an organization uses to manage safety and health risks and to improve its safety performance continually.

A four-step improvement loop: plan the change and set objectives, do it on a small scale, check results against the objective, then act by standardizing or adjusting before repeating.

A proactive measure of preventive activities or conditions, such as completed inspections, training hours, or closed corrective actions, that signals future safety performance before harm occurs.

A retrospective measure of outcomes that have already occurred, such as recordable injury rates or lost workdays, used to confirm trends but unable to predict future incidents on its own.

A scheduled top-management evaluation of whether the safety management system remains suitable, adequate, and effective, resulting in decisions on resources, objectives, and needed changes.

A written top-level statement in which senior leadership commits to protecting workers, sets safety objectives, and assigns accountability, forming the foundation of the safety management system.

The systematic process of recognizing sources of potential harm, including conditions, behaviors, materials, and activities, before they cause injury, illness, damage, or loss.

The process of evaluating the likelihood and severity of harm arising from an identified hazard, then deciding whether existing controls are sufficient or additional action is required.

A grid that plots likelihood against severity to rank risks into levels such as low, medium, or high, helping teams decide which hazards need attention first.

A step-by-step examination of a specific task that lists each task step, identifies the hazards present at that step, and specifies controls before the work is performed.

A team-based technique that lists the ways a component or process can fail, rates severity, occurrence, and detection, and uses the resulting score to prioritize corrective actions.

The principle that risk should be reduced until further reduction would cost grossly disproportionate effort relative to the benefit gained, leaving only a tolerable residual risk.

The process of measuring or estimating how much of a hazard, such as a chemical, noise, or vibration, workers actually contact, and comparing that dose with applicable occupational exposure limits.

A ranked order of control strategies: elimination, substitution, engineering controls, administrative controls, and personal protective equipment, preferring controls that protect everyone without relying on individual behavior.

A physical change to equipment, processes, or the workplace, such as guarding, ventilation, or sound enclosure, that reduces hazard exposure at the source without depending on worker action.

A policy, procedure, schedule, or training practice that reduces exposure by changing how work is organized, such as job rotation, permit systems, or limiting time in a hazard.

Equipment worn by a worker, such as gloves, respirators, or fall harnesses, that provides a barrier against hazards but is a last resort because it protects only the wearer.

A documented procedure using locks, tags, and verification to ensure hazardous energy is isolated and de-energized before maintenance or servicing, preventing unexpected startup or release.

Section 5(a)(1) of the OSH Act, requiring employers to furnish a workplace free from recognized hazards likely to cause death or serious physical harm, even when no specific standard applies.

The regulation at 29 CFR 1904 that defines which work-related injuries and illnesses must be recorded and how to complete the OSHA 300 log, 300A summary, and 301 incident report.

A voluntary technical standard developed by a recognized body such as ANSI, NFPA, or ASTM through public consensus; it becomes enforceable only when adopted by a regulator or written into a contract.

An enforceable occupational exposure limit set by OSHA, usually as an eight-hour time-weighted average, establishing the maximum airborne concentration of a substance to which workers may be exposed.

A standardized sixteen-section document from a chemical manufacturer describing hazards, safe handling, exposure controls, and emergency measures for a hazardous chemical, replacing the older material safety data sheet.

The OSHA rule at 29 CFR 1910.1200 requiring chemical manufacturers to classify hazards and employers to label containers, provide safety data sheets, and train exposed workers.

An unplanned event that caused or could have caused injury, illness, property damage, or environmental harm, including events that produced no actual consequence.

An unplanned event that did not result in injury or damage but had a realistic chance of doing so, providing a free lesson when it is reported and investigated.

A structured investigation method that moves beyond the immediate cause to identify underlying system, management, or design failures that allowed an incident and must be corrected to prevent recurrence.

A specific, assigned, dated change that removes an identified root cause or deficiency; it differs from containment, which only limits harm from the current problem.

A written plan describing how an organization will respond to fire, medical, weather, or other emergencies, including alarm signals, evacuation routes, assigned roles, and accounting for people.

A structured debrief held after an incident or drill that asks what was supposed to happen, what actually happened, why the difference occurred, and what will be changed.

A systematic comparison of the knowledge and skills a job requires with what workers currently have, used to decide who needs training and what content it should cover.

The demonstrated ability to perform a task safely and correctly to a defined standard, verified through knowledge checks and observed performance rather than attendance alone.

A short, focused safety discussion held with a work crew before a shift or task, covering the hazards of the day and the controls to be used.

The shared values, beliefs, and behaviors that determine how seriously an organization treats safety, visible in what leaders reward, what workers report, and how near misses are handled.

A joint labor-management group that meets regularly to review hazards, incidents, and employee concerns and to recommend improvements to the safety program.

A published set of principles, such as honesty, protecting public safety, competence, and avoiding conflicts, that guides professional conduct and supports self-regulation of the practice.

A situation in which a professional's personal, financial, or other interest could improperly influence safety judgments; it should be disclosed and the affected decision reassigned.

The duty to protect personal, medical, and proprietary information obtained during safety work, sharing it only with those who have a legitimate need and legal right to know.

The boundaries of what a safety professional is competent and authorized to do, requiring referral to other qualified specialists when a task falls outside that competence.

Any person or group affected by, or able to affect, the safety program, including workers, managers, contractors, regulators, customers, and the community, whose interests must be considered.