acronym,full_form,category,definition
ALARP,As Low As Reasonably Practicable,methodology,UK HSE risk principle: residual risk reduced until further reduction would cost grossly disproportionate to the benefit
ANSI,American National Standards Institute,body,Publishes Z-series safety standards (Z87.1 eye / Z89.1 head / Z16.1 incident classification)
API,American Petroleum Institute,body,Publishes API 510/570/653 inspection + API 580/581 RBI + API RP 754 process safety indicators
BBS,Behaviour-Based Safety,methodology,Observation-feedback methodology focused on at-risk behaviours; downstream of hierarchy of controls
BOWTIE,Bow-tie analysis,methodology,Visual risk-assessment with top event in centre and barriers preventing/mitigating causes/consequences
CAR,Corrective Action Request,document,Formal record of non-conformance and the action taken to close it
CDM 2015,Construction Design and Management Regulations 2015,regulation,UK construction safety regulations defining principal-designer/contractor duties
CFOI,Census of Fatal Occupational Injuries,data source,US BLS annual fatality data by industry/cause
COSHH,Control of Substances Hazardous to Health,regulation,UK chemical-risk-assessment + exposure-control regulations 2002
DART,Days Away Restricted or Transferred,metric,OSHA recordable subset rate = (DART cases × 200000) / hours worked
EHS,Environment Health Safety,industry-term,North American/chemical-industry term for HSE
EMR,Experience Modification Rate,metric,US workers' compensation actuarial index; <1.0 = better than industry average
ESG,Environmental Social Governance,framework,Investor-facing sustainability reporting framework (SASB GRI TCFD ISSB)
FFS,Fitness-for-Service,methodology,ASME FFS-1 / API 579 assessment of equipment containing known damage
FRA,Fire Risk Assessment,document,UK RRO 2005 mandate for every non-domestic premises
GHG,Greenhouse Gas,framework,Scope 1 direct / Scope 2 purchased energy / Scope 3 value chain
HAZID,Hazard Identification,methodology,Broad qualitative study to flag major hazards early in design
HAZOP,Hazard and Operability Study,methodology,Node-by-node systematic deviation analysis using guidewords (NO MORE LESS REVERSE etc.) per IEC 61882
HFE,Human Factors Engineering,discipline,Design-for-human-error-reduction discipline
HIRA,Hazard Identification and Risk Assessment,methodology,Common GCC term for combined HAZID + RA workflow
HSE,Health Safety Environment,industry-term,Also UK Health and Safety Executive regulator
HSG65,Managing for Health and Safety guidance,framework,UK HSE Plan-Do-Check-Act framework
IH,Industrial Hygiene,discipline,Recognition / evaluation / control of workplace health hazards
IIPP,Injury and Illness Prevention Program,regulation,Cal/OSHA §3203 mandate for every California employer
IIRSM,International Institute of Risk and Safety Management,body,UK-based HSE professional body
IOGP,International Association of Oil and Gas Producers,body,Publishes annual safety performance benchmarks
IOSH,Institution of Occupational Safety and Health,body,Largest HSE professional body globally; UK-based
ITA,Injury Tracking Application,system,OSHA electronic 300A submission portal for establishments ≥250 employees or high-hazard ≥20
JSA,Job Safety Analysis,document,Step-by-step task hazard breakdown
JHA,Job Hazard Analysis,document,Same as JSA — different term by jurisdiction
LOLER,Lifting Operations and Lifting Equipment Regulations,regulation,UK 1998 regulations for lifting equipment inspection
LOPC,Loss of Primary Containment,metric,API RP 754 Tier 1/2 process safety indicator
LOTO,Lockout/Tagout,methodology,OSHA 1910.147 isolation of energy sources during servicing
LTI,Lost Time Injury,metric,Work-related injury resulting in time off work beyond day of incident
LTIFR,Lost Time Injury Frequency Rate,metric,(LTIs × 1000000) / hours worked — EU/UK/Australia convention
LTIR,Lost Time Incident Rate,metric,(LTIs × 200000) / hours worked — US convention
MOC,Management of Change,methodology,Procedural review of non-routine changes; OSHA PSM 1910.119(l) requirement
MSDS,Material Safety Data Sheet,document,Predecessor of SDS
SDS,Safety Data Sheet,document,GHS-aligned 16-section chemical safety document
NEBOSH,National Examination Board in Occupational Safety and Health,body,UK globally-recognised HSE qualifications board
NFPA,National Fire Protection Association,body,US: NFPA 70E electrical / NFPA 101 life safety
NIOSH,National Institute for Occupational Safety and Health,body,US CDC research arm; publishes lifting equation and RELs
OSHA,Occupational Safety and Health Administration,body,US federal workplace safety regulator
OSHAD-SF,Occupational Safety and Health Abu Dhabi System Framework,framework,40-element compliance framework for Abu Dhabi
PEL,Permissible Exposure Limit,limit,OSHA legal exposure limit
TLV,Threshold Limit Value,limit,ACGIH voluntary exposure limit (typically lower than PEL)
REL,Recommended Exposure Limit,limit,NIOSH recommended limit
WEL,Workplace Exposure Limit,limit,UK HSE exposure limit
PPE,Personal Protective Equipment,equipment,Last/weakest level of hierarchy of controls
PSM,Process Safety Management,regulation,OSHA 29 CFR 1910.119 for highly hazardous chemicals
PTW,Permit to Work,document,Written authorization for high-risk task (hot work / confined space / WAH / electrical / excavation)
PUWER,Provision and Use of Work Equipment Regulations,regulation,UK 1998 regulations
RA,Risk Assessment,document,Systematic evaluation of potential risks in planned activity
RBI,Risk-Based Inspection,methodology,API 580/581 methodology for inspection prioritisation
RCA,Root Cause Analysis,methodology,Systematic investigation: 5-Why / Ishikawa / ICAM / TapRooT / Apollo
RIDDOR,Reporting of Injuries Diseases and Dangerous Occurrences Regulations,regulation,UK 2013 incident reporting regulations
RTW,Return to Work,process,Post-injury return-to-work process
SCE,Safety Critical Element,methodology,Equipment whose failure could cause major accident; UK COMAH + Offshore SCR 2015 requirement
SIMOPS,Simultaneous Operations,methodology,Co-located activities with potential to interact dangerously
SIF,Serious Injury or Fatality,metric,Leading-indicator focus area
SIF-P,Serious Injury or Fatality Potential,metric,Subset of near-misses where consequence could have been serious
SMS,Safety Management System,framework,ICAO Annex 19 aviation mandate; broader use in rail/marine
SWMS,Safe Work Method Statement,document,Australia/NZ method-statement equivalent
TRIR,Total Recordable Incident Rate,metric,(Recordable cases × 200000) / hours worked — US convention
TRIFR,Total Recordable Injury Frequency Rate,metric,(Recordable injuries × 1000000) / hours worked — UK/Australia/IOGP convention
TBT,Toolbox Talk,activity,Short pre-shift safety briefing (5–15 min)
WBGT,Wet Bulb Globe Temperature,metric,Composite heat-stress index: 0.7×Twb + 0.2×Tg + 0.1×Tdb outdoors with sun
WHS,Work Health and Safety,industry-term,Australia/NZ replacement for OHS
AED,Automated External Defibrillator,equipment,Defibrillator for cardiac arrest first aid
ATEX,Atmosphères Explosibles,regulation,EU directives on equipment for explosive atmospheres
BAT,Best Available Technique,methodology,EU IPPC regulatory standard for emission limits
BBP,Bloodborne Pathogens,hazard,OSHA 1910.1030-regulated infection risk
CIH,Certified Industrial Hygienist,certification,US ABIH credential for industrial hygiene professionals
CMR,Carcinogenic Mutagenic Reprotoxic,classification,EU chemical-hazard classification
CMP,Construction Management Plan,document,Site-level construction management document
COMAH,Control of Major Accident Hazards,regulation,UK 2015 major-hazard regulations transposing EU Seveso
DCS,Distributed Control System,equipment,Process control architecture
DGR,Dangerous Goods Regulations,regulation,Transport of dangerous goods by air (IATA) / sea (IMDG) / rail / road (ADR)
DSE,Display Screen Equipment,hazard,UK term for workstation monitor/keyboard ergonomic assessment
DSEAR,Dangerous Substances and Explosive Atmospheres Regulations,regulation,UK 2002 explosive-atmosphere regulations
EAP,Employee Assistance Program,benefit,Anonymous workplace counselling and support service
ECP,Exposure Control Plan,document,OSHA 1910.1030 (BBP) and similar mandates
EEWP,Energized Electrical Work Permit,document,NFPA 70E permit for energized electrical work
EHO,Environmental Health Officer,role,UK environmental health enforcement officer
ERP,Emergency Response Plan,document,Site-specific emergency response procedures
ESD,Emergency Shutdown,system,Automated or manual rapid shutdown to safe state
FFP,Filtering Face Piece,equipment,EU disposable respirator (FFP1/2/3)
FMEA,Failure Mode and Effects Analysis,methodology,Systematic analysis of potential failure modes
GFCI,Ground Fault Circuit Interrupter,equipment,Electrical safety device cutting power on fault
HEPA,High-Efficiency Particulate Air,equipment,99.97% efficient air filter for ≥0.3 µm particles
IDLH,Immediately Dangerous to Life or Health,limit,NIOSH concentration threshold for atmosphere considered immediately life-threatening
IMS,Integrated Management System,framework,Combined ISO 45001 + 14001 + 9001 management
IP,Ingress Protection,rating,IEC 60529 dust+water-ingress equipment rating
JLA,Job-Level Authorisation,document,Per-task authorisation
KPI,Key Performance Indicator,metric,Quantitative performance measure
LEL,Lower Explosive Limit,limit,Lowest flammable atmosphere concentration
LEV,Local Exhaust Ventilation,equipment,Engineering control capturing contaminants at source
LFL,Lower Flammable Limit,limit,Synonym for LEL
LOPA,Layer of Protection Analysis,methodology,Semi-quantitative risk-assessment per IEC 61511
LSIR,Location-Specific Individual Risk,metric,QRA-derived risk to person at specific location
NCR,Non-Conformance Report,document,Identified deviation from spec/standard
OBM,Oil-Based Mud,equipment,Drilling-fluid type
OHSAS,Occupational Health and Safety Assessment Series 18001,framework,Predecessor of ISO 45001 (deprecated)
PA,Preventive Action,document,Action taken to prevent future occurrence
PDCA,Plan-Do-Check-Act,methodology,Continual-improvement cycle (Deming)
PFD,Personal Flotation Device,equipment,Life jacket; also Probability of Failure on Demand in SIL
PHA,Process Hazard Analysis,methodology,Umbrella for HAZOP / what-if / checklist / FMEA
PSO,Personnel Safety Observation,activity,Field safety observation
PSV,Pressure Safety Valve,equipment,Pressure relief valve
QHSE,Quality Health Safety Environment,industry-term,QHSE = Q + HSE
QRA,Quantitative Risk Assessment,methodology,Numerical risk assessment with frequency × consequence
RACI,Responsible Accountable Consulted Informed,framework,Responsibility-assignment matrix
REACH,Registration Evaluation Authorisation and Restriction of Chemicals,regulation,EU chemical regulation
ROPS,Roll-Over Protective Structure,equipment,Tractor/heavy-equipment rollover protection
SCBA,Self-Contained Breathing Apparatus,equipment,Self-contained respirator with air cylinder
SEL,Sound Exposure Level,metric,Noise-exposure measure
SIL,Safety Integrity Level,classification,IEC 61508/61511 SIF reliability ranking (1–4)
SIS,Safety Instrumented System,system,Hardware+software for safety instrumented functions
SOC 2,Service Organization Control 2,framework,US AICPA security audit framework
SOP,Standard Operating Procedure,document,Written task procedure
STEL,Short-Term Exposure Limit,limit,15-minute TWA exposure limit
TWA,Time Weighted Average,limit,8-hour averaged exposure level
UEL,Upper Explosive Limit,limit,Highest flammable atmosphere concentration
UFL,Upper Flammable Limit,limit,Synonym for UEL
VCE,Vapour Cloud Explosion,event,Confined flammable vapour cloud ignition
WAH,Work at Height,activity,Work where person could fall and injure