CSP study materials
CSP study resources

CSP key terms

CSP · Get comfortable with the vocabulary.

Hierarchy of Controls

Ranked approach to reducing risk that starts with eliminating the hazard and proceeds through substitution, engineering controls, administrative controls, and personal protective equipment.

Related: Engineering Controls, Administrative Controls, Personal Protective Equipment
ALARP

Principle that risk should be reduced as low as reasonably practicable, balancing the cost and difficulty of further controls against the benefit of reduced harm.

Related: Risk Assessment, Hierarchy of Controls
Risk Assessment

Process that identifies hazards, evaluates the likelihood and severity of harm, and determines whether risk is acceptable or needs controls.

Related: Hazard Identification, Risk Matrix, ALARP
Hazard Identification

Process of recognizing sources of potential harm and the conditions or activities that could expose people, property, or the environment to that harm.

Related: Risk Assessment, Job Hazard Analysis
Job Hazard Analysis

Step-by-step method that breaks a task into stages, identifies hazards at each stage, and defines controls before work begins.

Related: Hazard Identification, Hierarchy of Controls
HAZOP

Structured team technique that examines a process line by line using guide words to find deviations from design intent and their potential consequences.

Related: Preliminary Hazard Analysis, Risk Assessment
Preliminary Hazard Analysis

Early-stage technique that lists hazards, assesses their severity and likelihood, and identifies controls before detailed design or operations begin.

Related: HAZOP, Risk Assessment
Risk Matrix

Grid that combines likelihood and severity ratings to rank risks and help decide, in a consistent way, which risks need treatment first.

Related: Risk Assessment, ALARP
Engineering Controls

Physical changes to equipment, processes, or workplaces, such as guards, ventilation, or interlocks, that reduce hazard exposure without relying on worker behavior.

Related: Hierarchy of Controls, Machine Guarding
Administrative Controls

Work practices, procedures, training, scheduling, and signage that reduce exposure to hazards by changing how work is organized or performed.

Related: Hierarchy of Controls, Personal Protective Equipment
Personal Protective Equipment

Equipment worn or used by a worker, such as gloves, respirators, or hearing protection, that creates a barrier between the person and a hazard.

Related: Hierarchy of Controls, Administrative Controls
Lockout/Tagout

Energy control procedure that isolates hazardous energy sources and applies locks and tags so equipment cannot be started or release stored energy during service.

Related: Permit-Required Confined Space, Machine Guarding
Permit-Required Confined Space

Space with limited entry or exit, not designed for continuous occupancy, and containing or potentially containing a serious safety or health hazard requiring a permit.

Related: Lockout/Tagout, Emergency Action Plan
Machine Guarding

Barriers, interlocks, or devices that prevent workers from contacting dangerous moving parts or entering pinch points on machinery.

Related: Engineering Controls, Lockout/Tagout
Fall Protection

Systems and practices, such as guardrails, harnesses, and anchorage, that prevent falls or arrest them before a worker strikes a lower level.

Related: Hierarchy of Controls, Personal Protective Equipment
Exposure Assessment

Process of measuring or estimating how much of a hazardous agent a worker or community may contact, and judging whether that exposure is acceptable.

Related: Occupational Exposure Limit, Risk Assessment
Occupational Exposure Limit

Regulatory or advisory maximum concentration or dose of a workplace hazard intended to protect most workers from adverse health effects over a working lifetime.

Related: Exposure Assessment, Regulatory Compliance
Safety Management System

Structured set of policies, procedures, and processes an organization uses to manage safety, health, and environmental risks and continually improve performance.

Related: Plan-Do-Check-Act, Management Review
Plan-Do-Check-Act

Continuous improvement cycle in which an organization plans changes, implements them, checks results, and acts on findings to improve performance.

Related: Safety Management System, Management Review
Leading Indicator

Proactive measure, such as training completion or inspection frequency, that reflects preventive activities and can signal future safety performance.

Related: Lagging Indicator, Safety Audit
Lagging Indicator

Retrospective measure, such as injury rates or lost-time incidents, that records outcomes after they occur and shows past performance.

Related: Leading Indicator, Incident Investigation
Safety Audit

Systematic, documented review that compares workplace conditions and practices with defined standards to identify gaps and drive correction.

Related: Management Review, Leading Indicator
Management Review

Top-management evaluation of safety, health, and environmental performance and system suitability, used to set priorities and allocate resources for improvement.

Related: Safety Management System, Plan-Do-Check-Act
Root Cause Analysis

Structured method for finding the underlying systemic reasons an incident occurred, rather than stopping at the immediate or proximate cause.

Related: Incident Investigation, Five Whys, Fault Tree Analysis
Five Whys

Simple questioning technique that repeatedly asks why a problem occurred until the team reaches a fundamental cause that can be corrected.

Related: Root Cause Analysis, Incident Investigation
Fault Tree Analysis

Deductive diagramming method that starts with an undesired event and traces backward through contributing failures and conditions to identify causes.

Related: Root Cause Analysis, Fishbone Diagram
Fishbone Diagram

Cause-and-effect diagram that organizes possible causes of a problem into categories such as people, equipment, methods, materials, measurement, and environment.

Related: Root Cause Analysis, Incident Investigation
Incident Investigation

Formal process for gathering facts, determining causes, and recommending corrective actions after an injury, illness, near miss, or property damage event.

Related: Near Miss, Root Cause Analysis
Near Miss

Unplanned event that did not cause injury or damage but had the potential to do so under slightly different circumstances.

Related: Incident Investigation, Lagging Indicator
Emergency Action Plan

Written document that defines roles, notification methods, evacuation routes, assembly points, and response procedures for foreseeable emergencies.

Related: Evacuation Drill, Shelter-in-Place, Spill Response
Shelter-in-Place

Protective strategy in which people stay inside a building and close windows, doors, and ventilation to avoid exposure to an outdoor hazard.

Related: Emergency Action Plan, Evacuation Drill
Evacuation Drill

Practice exercise that tests whether occupants can leave a facility promptly and safely using planned routes and procedures and reach assembly areas.

Related: Emergency Action Plan, Shelter-in-Place
Spill Response

Planned actions to contain, control, and clean up released hazardous substances while protecting responders, the public, and the environment.

Related: Emergency Action Plan, Regulatory Compliance
Regulatory Compliance

Condition of meeting mandatory legal requirements set by government agencies, including permits, recordkeeping, training, and exposure limits.

Related: Consensus Standard, Occupational Exposure Limit
Consensus Standard

Voluntary standard developed by a recognized body through stakeholder agreement, often used to establish good practice or to support regulatory requirements.

Related: Regulatory Compliance, Safety Audit
Safety Culture

Shared values, attitudes, and behaviors in an organization that determine how seriously safety is treated and how people act when no one is watching.

Related: Behavior-Based Safety, Safety Management System
Behavior-Based Safety

Process that observes work behaviors, gives feedback, and reinforces safe practices while identifying barriers to safe work; it focuses on observable actions rather than attitudes.

Related: Safety Culture, Leading Indicator
Pollution Prevention

Practice of reducing or eliminating waste and emissions at the source through process changes, material substitution, or efficient operations rather than treating them later.

Related: Sustainability, Regulatory Compliance
Sustainability

Approach to operations that seeks to meet present needs while protecting environmental resources, worker well-being, and community health for the future.

Related: Pollution Prevention, Safety Culture
Ergonomics

Design of work, tools, and equipment to fit human capabilities, reduce strain and fatigue, prevent musculoskeletal injury, and improve performance.

Related: Job Hazard Analysis, Hierarchy of Controls