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Lab Safety Dictionary

In celebration of thirty-five years of service to safety in science education, the Laboratory Safety Institute (LSI) invites you to join us in creating "The Online Laboratory Safety Dictionary". Each month, the names of everyone submitting a new word with its definition will be entered into a drawing to receive either a free LSI (1) training program voucher or (2) custom webinar.

Please use the form below to submit your word with definition.
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Letter A

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AAAdministering Agency
AAAtomic Absorption (commonly used to refer to the instrument called an atomic absorption spectrometer)
AASAtomic Absorption Spectroscopy
ABC'sAirway, Breathing, Circulation; A reminder to first responders to "evaluate" victims before doing CPR
ABIHAmerican Board of Industrial Hygiene (issues CIH industrial hygiene certification)
ABSAAmerican Biological Safety Association, professional association
ACBMAsbestos Containing Building Material
ACCSHAdvisory Committee on Construction Safety and Health
ACGIHAmerican Conference of Governmental Industrial Hygienists, professional association which establishes TLVs
ACHMMAcademy of Certified Hazardous Materials. The membership body to which belong those who are CHMMs.
ACMAsbestos Containing Material
ACRSPAssociation of Canadian Registered Safety Professionals
ACSAmerican Chemical Society
ADAAmericans with Disabilities Act
ADRAlternative Dispute Resolution
AEAtomic Emission see AES
AELAcceptable Exposure Limit
AESAtomic Emission Spectrophotometry - Analysis by detection and quantitation of the characteristic electromagnetic emissions from atoms in a sample.
AFM
Atomic Force Microscopy
AGAttorney General
AGAAmerican Gas Association
AGSTAbove Ground Storage Tank
AHERAAsbestos Hazard Emergency Response Act of 1986 (Title II of TSCA) US Federal legislation requiring all schools to determine the location and condition of asbestos containing material, and setting up procedures for issuing credentials to those who disturb asbestos for testing or removal.
AHMAcutely Hazardous Materials
AIAccident Investigator
AIChEAmerican Institute of Chemical Engineers
AIDSAcquired Immune Deficiency  Syndrome
AIHAAmerican Industrial Hygiene Association, Fairfax, VA. The broad professional association for Industrial Hygienists in the US and Canada, with local sections also in parts of Europe. This association is the largest professional Industrial Hygiene/Occupational Hygiene association in the world.
AIHCEAmerican Industrial Hygiene Conference and Exposition. Annual, week long, professional conference jointly sponsored by the AIHA and the ACGIH in the spring.
ALARAAs Low As Reasonably Achievable, a philosophy applied to the control of exposure to ionizing radiation
ALCMAssociate in Loss Control Management, a credential issued by the Insurance Institute of America, which is located in Malvern, Pennsylvania, USA 19355-0770.
ALJAdministrative Law Judge
ALSAdvanced Life Support
ANPRAdvanced Notice of Proposed Rulemaking
ANSIAmerican National Standards Institute Publishes consensus standards on a wide variety of subjects, including safety equipment, procedures, etc. contact: ANSI, Attn: customer Service, 11 West 42nd Street, New York, NY 10036. Telephone [            212-642-4900      ] is staffed 8:45 - 16:45 Eastern Time. ANSI has international distributors in England (American Technical Publications, Ltd., in Herts.), in Japan (Japanese Standards Association, Tokyo), and in Canada (Standards Council of Canada, Ottawa)
AOAdministrative Order
APAAdministrative Procedure Act, 5 USC Section 551 et seq; Government Code Section 11340 et seq
APCDAir Pollution Control District (California)
APCOAir Pollution Control Officer, Health and Safety (H&S) Code Section 40750 et seq (California)
APFassigned protection factor, used in the context of respiratory protection
APHAAmerican Public Health Association
APIAmerican Petroleum Institute
APIHAssociation of Professional Industrial Hygienists. Based in Tennessee, USA, this organization offers professional credentialing of industrial hygienists as RIH or RPIH under the Tennessee title protection law for industrial hygiene.
APPAAssociation of (College and University) Physical Plant Administrators, a US professional association which, among its other activities, monitors government legislative and regulatory actions which may impact the academic community.  (refers to itself now as The Association of Higher Education Facilities Officers)
APRAir-Purifying Respirator
AQCRAir Quality Control Region
AQMDAir Quality Management District (California)
ARARApplicable or Relevant and Appropriate Requirements (CERCLA)
ARBAir Resources Board (Cal/EPA)
ARSAgricultural Research Service (of USDA)
ASAAccredited Safety Auditor, a credential issued by the International Loss Control Institute, which is located in Loganville, Georgia, USA.
ASAEAmerican Society of Agricultural Engineers
ASHCATAssociation of Safety & Health Consultants and Trainers Inc.
ASHRAEAmerican Society of Heating, Refrigerating, and Air conditioning Engineers. Publishes a well regarded multivolume handbook which includes ventilation guidance, and standards on IAQ and other ventilation related issues.
ASMEAmerican Society of Mechanical Engineers
ASPAssociate Safety Professional, designation given to one who has successfully completed the first half of the examination process for CSP.
ASPISAbandoned Site Program Information System
ASQCAmerican Society for Quality Control
ASSEAmerican Society of Safety Engineers, the national professional society for Safety Engineers in the US. 1800 E. Oakton St., Des Plaines, IL 60018-2187 USA Voice Phone -             (708) 692-4121       Fax - (708) 296-3769
ASTAboveground Storage Tanks
ASTMAmerican Society for Testing and Materials
ATCAutomatic Temperature Compensation
ATCMAir Toxics Control Measure
ATSDRAgency for Toxic Substances and Disease Registry an agency of the Public Health Service in the U.S. Department of Health and Human Services
AWOAnimal Welfare Officer
AWTAdvanced Wastewater Treatment

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Letter B

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BACTBest Available Control Technology, a term used in US environmental control regulations
BATBest Available Technology
BATEABest Available Technology Economically Achievable, terminology for sewage cleanup technology to be applied under Canadian Municipal-Industrial Strategy for Abatement, for cleanup of Great Lakes water sources.
BBPbloodborne pathogens - Most often used in the context of a discussion of HIV and/or Hepatitis.
BBSBehavior Based Safety
BCSPBoard of Certified Safety Professionals The certifying organization that issues the ASP, CSP, and COHST credentials following review of experience and successful completion of written tests. In addition to an exam in the Comprehensive Practice of Safety, specialty exams are offered in Safety Management, Fire Protection, and Safety Engineering 208 Burwash, Savoy, IL 61874 USA,             (217) 359-9263      
BCTBest Conventional Pollutant Control Technology
BLEVEBoiling liquid expanding vapor explosion (or, for fun, Blast Levels Everything Very Effectively)
BLOSABeam Line Operations and Safety Awareness
BLSBasic Life Support
BLSBureau of Labor Statistics, an agency of the US government which gathers statistical information on accident rates, among other things.
BMPBest Management Practice
BNABureau of National Affairs, Inc
BODBasic Oxygen Demand; also, Biological Oxygen Demand - the oxygen demand if a water sample is biologically oxidized
BOHSBritish Occupational Hygiene Society, the national professional society of Occupational Hygienists in the United Kingdom
BPTBest Practicable Control Technology Currently Available (CCAA)
BSBritish Standards
BSCBiological Safety Cabinet
BSIBritish Standards Institute
BTUBritish Thermal Unit, a traditional unit of measure for heat

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Letter C

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CAAClean Air Act, 42 USC Section 7401 et seq Federal); H&S Code Section 39000 et seq
CAIRComprehensive Assessment Information Rule (under TSCA)
Cal/EPACalifornia Environmental Protection Agency
Cal-OSHACalifornia Division of Occupational Safety and Health
CalTransCalifornia Department of Transportation
CAMUCorrective Action Management Units (RCRA)
CAOCorrective Action Order (RCRA)
CAPCapacity Assurance Plan (RCRA)
CAPCollege of American Pathologists
CASChemical Abstracts Service (number) CAS is a Columbus, Ohio Publisher of Chemical Abstracts and other publications and services
Caustic
Able to burn or corrode organic tissue by chemical action.
CAVConstant Air Volume - chemical hood motor pulls constant cfm (or attempts to)
CBI

CBR
Confidential Business Information

Chemical, biological or radiological hazard. Sometimes also referred to as NBC (Nuclear, biological or chemical hazard.
CCAACalifornia Clean Air Act, H&S Code Section 39000 et seq
CCAHTConseil Canadien d'Agrement des Hygienistes du Travail - see CRBOH
CCCCompromised Container Caps, cracked or otherwise damaged screw-on caps for chemical containers. [This acronym invented 24 Feb 1995 by Jerry Mason, Chemical Management Officer, Brigham Young University.]
CCOHSCanadian Centre for Occupational Health and Safety, a Hamilton, Ontario, Canada based organization offering a well regarded collection of MSDS on CD-ROM, as well as other H&S related services. telephone:             905-572-2981       FAX: 905-572-2206 Customer Service e-mail address - custserv@ccohs.ca
CCPCooperative Compliance Program
CCPSCenter for Chemical Process Safety - An organization established by the American Institute of Chemical Engineers (AIChE) to focus on engineering practices to help prevent and mitigate catastrophic hazardous chemical accidents.
CCRCalifornia Code of Regulations
CDCivil Defense
CDCCenter for Disease Control
CDCCenters for Disease Control - Based in Atlanta, Georgia, this is the organization within the US National Institutes of Health, Public Health Service which specializes in recognition, evaluation and control of communicable diseases. NIOSH is part of CDC.
CEELCommunity Emergency Exposure Level A sort of PEL for a whole community; intended as a guideline for when evacuations are necessary in case of accidental releases
CEGCertified Engineering Geologist
CEMContinuous Emission Monitoring
CEPACanadian Environmental Protection Act
CEPPChemical Emergency Preparedness Program
CEPSCluster Environmental Protection Specialist
CEQACalifornia Environmental Quality Act, Public Resources Code Section 21000 et seq; Title 14 CCR Section 15000 et seq
CERCLAComprehensive Environmental Response, Compensation, and Liability Act, also known as Superfund. US Federal legislation establishing a huge EPA project to clean up hazardous material dumps. Makes generators responsible for how waste is ultimately disposed of.
CERCLISComprehensive Environmental Response, Compensation, and Liability Information System
CESQGConditionally Exempt Small Quantity Generator
CETCertified Environmental Trainer, a credential issued by the National Environmental training Association
CFCChlorofluorocarbons, being phased out world wide because of their detrimental effect on the ozone layer.
CFMcubic feet per minute, a unit of measure of air flow which is used in evaluating ventilation systems
CFRCode of Federal Regulations, the official compendium of regulations issued by agencies of the US Federal Government. For example, 29CFR refers to the regulations isued by the Department of Labor, and 29CFR1910 refers to the General Industry regulations issued by OSHA, which is part of the department of Labor.
CGACompressed Gas Association
CGLComprehensive General Liability Insurance
CHEMTRECChemical Transportation Emergency Center - provides hazard information warnings and guidance in emergency (and ONLY emergency) situations.
CHLOREPChlorine Emergency Plan
CHMMCertified Hazardous Materials Manager, a credential awarded by IHMM
CHOChemical Hygiene Officer The Administrator of a Chemical Hygiene Plan under OSHA regulations
CHPCertified Health Professional
CHPChemical Hygiene Plan Required by OSHA, a statement of laboratory work practices written by each employer
CHPCertified Health Physicist - A person who deals on a professional level with radiation safety.
CHSTConstruction Safety and Health Technician
CICriminal Investigator
CIDCriminal Investigation Division
CIHCertified Industrial Hygienist On good days certification reflects education, training and experience in the art and science of the anticipation, recognition, evaluation and control of health hazards in the workplace and community. On bad days it means you have a new appreciation for the "or should have know" part of liability law. On other days it simply means education, 5 years of experience and passing two brain straining tests.
CIITChemical Industry Institute of Technology
ClChlorine
CLMIComprehensive Loss Management Inc. of Minneapolis, Mn. 55447 A company that produced and sells a well publicized back injury prevention program.
CNGCompressed Natural Gas, aka Methane
COCarbon monoxide
CODChemical Oxygen Demand - oxygen demand if a water sample is chemically oxidized.
COLIWASACOmposite LIquid WAste SAmpler
COOConduct of Operations
CPCommand Post
CPCChemical Protective Clothing
CPLCompliance Directive (OSHA enforcement instructions for inspectors)
CPRCardiopulmonary Resuscitation
CPSCConsumer Products Safety Commission, a US federal agency
CPWRCenter to Protect Workers' Rights A US based advocacy group located at 111 Massachusetts Avenue, N.W., Suite 509 Washington, D.C. 20001             202-962-8490       center@cpwr.com
CRCase Report Number
CRBOHCanadian Registration Board of Occupational Hygienists
CRSPCanadian Registered Safety Professional
CRWQCBCalifornia Regional Water Quality Control Board
CSACanadian Standards Association, the national consensus standards association for Canada is roughly the Canadian equivalent of ANSI in the US. It is located at 178 Rexdale Boulevard, Rexdale (Toronto), Ontario, Canada M9W 1R3             (416) 747-4044      
CSACampus Safety Association, now known as CSHEMA, a North America based association of people involved in providing health and safety services to colleges and universities. This is a subsidiary organization of the National Safety Council and members of the NSC in the US, Canada, and Mexico can join at no additional fee.
CSFMCalifornia State Fire Marshall
CSHEMACampus Safety, Health, and Environmental Management Association, affiliated with National Safety Council
CSHOCompliance Safety and Health Officer
CSMCertified Safety Manager
CSPCertified Safety Professional - the safety equivalent to a CIH. The initials CSP are also used by certified sales professionals, certified speaking professionals, and certified silly persons. The first two of these are for real, for the last I apologize to Monty Python. The Certified Safety Professional credential is issued by the BCSP (qv)
CSWMPCounty Solid Waste Management Plan (California)
CTDCumulative Trauma Disorder
CUHWCCollege and University Hazardous Waste Conference
CWAClean Water Act or FWPCA, 33 USC Section 1251 et seq;CA Water Code Section 13200 et seq (Porter-Cologne Act)

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Letter D

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dBDecibels
dBAdecibels on the A scale, a unit of measure of sound intensity.
DCODocument Control Officer
DEPdiethyl phthalate
DEQDepartment of Environmental Quality (Oregon)
DFADepartment of Food and Agriculture
DFGDeutsche Forschungsgemeinschaft (German Standards)
DFMdust, fume, and mist. This abbreviation refers to a respirator filter cartridge suitable for use against dusts, fumes or mists, and is used in the new NIOSH regulation on Respirator Certification.
DHHSDepartment of Health and Human Services, a Cabinet level department of the US Federal Government; the department in which CDC, and therefore NIOSH, is located
DHMMDirector of Hazardous Materials Management
DHS, DOHSDepartment of Health Services
DIERSDesign Institute for Emergency Relief Systems - a consortium of companies under the auspices of the American Institute of Chemical Engineers (AIChE) that was formed to develop methods for the design of emergency relief systems to handle runaway chemical reactions
DINDeutsches Institut fur Normung (German Standards Institute)
DIPPRDesign Institute of Physical Property Data - a consortium of companies under the auspices of the American Institute of Chemical Engineers (AIChE) that sponsors the compilation, measurement, and evaluation of physical property data for industrially important compounds
DISDraft International Standards
DLDriver's License
DMdust and mist. This abbreviation refers to a respirator filter cartridge suitable for use against dusts and mists, and is used in the new NIOSH regulation on Respirator Certification.
DNFSBDefense Nuclear Facilities Safety Board
DODissolved Oxygen
DOADead on Arrival
DOASDifferential Optical Absorption Spectroscopy
DOBDate of Birth
DODDepartment of Defense (Federal)
DOEDepartment of Ecology (Washington State)
DOEDepartment of Energy (Federal)
DOIDepartment of the Interior (Federal)
DOJDepartment of Justice (California or Federal)
DOLDepartment of Labor
DOPdioctyl phthalate.  The traditional test aerosol used for determining HEPA filter efficiency was an aerosolized form of warm DOP, selected because, when generated in the specified manner, the aerosol had a very narrow size distribution.
DOTDepartment of Transportation, A US Cabinet level department
DPRDepartment of Pesticide Regulation (Cal/EPA)
DREDestruction/Removal Efficiency
DSSDepartment of Social Services
DTSCDepartment of Toxic Substances Control (Cal/EPA)
DURDriving Under Revocation
DUSDriving Under Suspension
DVDomestic Violence
DVODiffuse Viewing Only

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Letter E

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EAPEmployee Assistance Program
EAPEmergency Action Plan; or Employee Assistance Program - one which deals with employee substance abuse or other non-employment related problems affecting work performance and safety
EDPElectronic Data Processing
EEOCEqual Employment Opportunity Commission
EERExcess Emission Reports
EGAEnhanced Graphics Array
EHSEnvironment, Health and Safety; or Environmental Health and Safety
EHSExtremely Hazardous Substance
EIAEnergy Information Administration
EILEnvironmental Impairment Liability Insurance
EIREnvironmental Impact Report (CEQA)
EISEnvironmental Impact Statement (NEPA)
ELF-EMFExtremely low frequency electric and magnetic fields, a controversial area regarding the possibility of inducing cancer in exposed people
ELLPATEnvironmental Lead Laboratory Proficiency Analytical Testing
EMEmergency Management
EMAEmergency Management Agency
EMRElectro-Magnetic Radiation
EMSEmergency Medical Service
ENEuropean Norms
EOCEmergency Operations Center - command post for large-scale campus and community emergencies/disasters
EOPEmergency Operations Plan
EPExtraction Procedure
EP TOXExtraction Procedure Toxicity Test (RCRA)
EPAEnvironmental Protection Agency An agency of the US Federal government which regulates chemical disposal, emissions to air,and water, and community pollution issues.
EPA #Generator # for RCRA manifesting (Federal)
EPCRAEmergency Planning and Community Right-to-know Act Title III of SARA, [a US law] requires facilities storing Reportable Quantities of hazardous materials to report to the LEPC
EPDMEthylene-propylene terpolymer
EPREthylene Propylene
EREmergency Room
ERAEnvironmental Risk Assessment (for EIL)
ERCEmissions Reduction Credit
ERGEmergency Response Guide A document providing guidance on emergency response in a transportation incident involving a particular chemical. The term is used in the context of US Department of Transportation requirements.
ERPEmergency Response Plan
ERPGEmergency Response Planning Guideline
ERRISEmergency and Remedial Response Inventory System
ERTEmergency Response Team
ES&HEnvironment, Safety, and Health
ESAEndangered Species Act, 15 USC Section 1531 et seq
ESAEnvironmental Site Assessment
ESCBAEscape Self-Contained Breathing Apparatus
ESDElectrostatic Dissipative
ESPElectrostatic Precipitators
ETAEstimated Time of Arrival
ETOHEthyl alcohol, ethanol

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Letter F

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FAQFrequently Asked Question(s)
FDAFood and Drug Administration (Federal)
FEMAFederal Emergency Management Agency, an agency of the US government.
FEPFluorinated Ethylene Propylene
FIField Interview
FIDFlame Ionization Detector
FIFRAFederal Insecticide, Fungicide, and Rodenticide Act, US federal legislation controlling the indicated pesticides.
FIPFinal Implementation Plan
FMFire Marchal
FMFactory Mutual - a research organization created by a group of insurance companies and concentrating on protection of property. Very well known for its expertise on fire and its property protection standards.
FMCSRFederal Motor Carrier Safety Regulations
FMEAFailure Mode and Effect Analysis
FMECAFailure Mode, Effects and Criticality Analysis
FOIAFreedom of Information Act (Federal)
FONSIFindings of No Significant Impact (NEPA)
FRFederal Register
FRFlame Resistant
FSForest Service
FSFeasibility Study (CERCLA)
FSARFinal Safety Analysis Report
FSTField Sobriety Test
FTAFault Tree Analysis
FTIRFourier Transform Infrared
FTIRFourier Transform InfraRed A chemical analytical method which takes the complete emission spectrum of a sample at once and uses computer software to sort out signals and identify the components of the sample.
FTUFixed Treatment Unit
FWPCAFederal Water Pollution Control Act, (CWA) 33 USC Section 12251 et seq

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Letter G

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GACTGenerally Available Control Technology
GAOGeneral Accounting Office (Federal)
GCGas Chromatography or Gas Chromatograph
GC/MSGas Chromatography/Mass Spectometry
GERTGeneral Employee Radiation Training
GFCIGround Fault Circuit Interrupter
GLCGas/liquid chromatography, also called GC
GLCGround Level Concentration
GLPGood Laboratory Practice
gpmGallons per minute
GSAGeneral Service Administration
GWGround Water
GWPSGround Water Protection Standard

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Letter H

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H2SHydrogen Sulfide
HAPsHazardous Air Pollutants
HASPHealth and Safety Plan (required by OSHA at hazardous waste cleanup sites)
HazComHazard Communication
HAZMATHazardous Materials
HAZOPHazard and Operability (Study), a structured means of evaluating a complex process to find problems associated with operability or safety of the process
HAZWOPERHazardous Waste Operations Emergency Response
HAZWOPERHazardous Waster Operations and Emergency Response, a term derived from US EPA regulations.
HAZWOPERHAZardous Waste Operations and Emergency Response, a term derived from OSHA regulation 1910.120
HBVHepatitis B Virus
HCAHazardous Communication Act
HCFCsHydrochlorofluorocarbons
HClHydrogen Chloride
HCSHazard Communication Standard Policy of communicating to employees the potential hazards of substances with which they work, and a specific standard issued in the US by OSHA.
HDPEHigh-Density Polyethylene
HEPAHigh Efficiency Particulate Air filter At least 99.97% efficient in the filtration of airborne particles 0.3 microns in diameter or greater (the "or greater" is wrong)
HFHydrogen Fluoride
HgMercury
HH&EHuman Health and the Environment
HHWHousehold Hazardous Waste
HIDHigh Intensity Discharge
HIVHuman Immunodeficiency Virus
HMBPHazardous Materials Business Plans, H&S Code Section 25504 et seq
HMIGHazardous Materials Identification Guide
HMISHazardous Materials Information System
HMRTHazardous Materials Response Team
HMTAHazardous Materials Transportation Act, 49 USC Section 1801 et seq; 49 CFR
HMTCHazardous Materials Technical Center (DOT)
HOCHalogenated Organic Compounds
HPHealth Physist (radiation safety specialist)
HPHewlett Packard
HPHighway Patrol
hpHorse power
HPDHearing Protection Device
HPLCHigh Performance Liquid Chromatography
HRHouse Report (Federal bill originated in the House of Representatives)
HRhazard ratio A term used in the new (1996) NIOSH regulation on respirator certification
HRDHuman Resource Division
HRSHazard Ranking System
HSHazardous Substance
HSAHazardous Substance Account of the California Superfund, H&S Code Section 25300 et seq
HSCAPHazardous Substance Cleanup Arbitration Panel, H&S Code Section 253561 et seq
HSOHealth & Safety Officer
HSWAHazardous and Solid Waste Amendments (1984 amendments to RCRA)
HVACHeating Ventilation and Air Conditioning
HWHazardous Waste
HWCLHazardous Waste Control Law (California RCRA's counterpart H&S Code Section 25100 et seq)
HWISHazardous Waste Information System (DTSC)
HWMUHazardous Waste Management Units (RCRA)
HWTCHazardous Waste Treatment Council

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Letter I

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IAFFInternational Association of Firefighters
IAQIndoor Air Quality - a general term combining a multitude of issues related to complaints by the occupants of buildings about illnesses or discomfort resulting from being in the building. Typically, no single agent or easily recognized group of agents is present in excess of a PEL or TLV.
IARCInternation Agency for Research on Cancer, affiliated with WHO
IATAInternational Air Transport Association
IBRIncorporated By Reference
ICIncident Command
ICAOInternational Civil Aviation Organization
ICCInterstate Commerce Commission, an agency of the US Governemt The ICC bar is a horizontal bar at the rear of moderate and large trucks required by ICC regulation and intended to prevent a following automobile from sliding under the truch in a collision.
ICPIncident Command Post
ICPInductively Coupled Plasma, an analytical method based on atomic emission.
ICSIncident Command System Procedure for emergency management used by fire departments and other emergency response teams
IDInside Diameter
IDLHImmediately Dangerous to Life and Health. As defined by NIOSH This represents a mazimum concentration from which one could escape within 30 minutes without any escape-impairing symptoms or any irreversible health effects. Note that the NIOSH definition addresses airborne concentration only. It does not consider direct contact with liquids, etc
IECInternational Electrotechnical Commission
IEUBKintegrated exposure uptake biokinetic model (lead levels)
IHIndustrial Hygiene (In Europe, this is usually called Occupational Hygiene)
IHITIndustrial Hygienist in Training, designation given to one who has completed the first half of the examination process for CIH. Valid for no more than 10 years.
IHMMInstitute of Hazardous Materials Management. Responsible for Certified Hazardous Materials Manager (CHMM) program and certification
IIPPInjury and Illness Prevention Program (required under California regulations)
ILCIInternational Loss Control Institute. Address is 4546 Atlanta Highway, P.O. Box 345, Loganville, Georgia 30249, USA
ILOInternational Labor Organization, international agency of the United Nations which addresses labor issues. Has an interest in occupational safety and health issues, and publishes useful reference materials.
IMOInternational Maritime Organization
IMSIon Mobility Spectrometry
INURInventory Update Rule
IOHSInternational Occupational Hygiene Society, international organization of national occupational/industrial hygiene societies
IOSHInstitution of Occupational Safety and Health, a UK based professional association.
IPIndustrial Plus
IPCCIntergovernmental Panel on Climate Control
IPSIron Pipe Standard
IRInfrared light or infrared spectrophotometer (IR is lower energy than visible, also known as heat waves)
ISInterim Status (for a TSDF)
ISDInterim Status Document
ISEAIndustrial Safety Equipment Association
ISOInternational Organization for Standardization
ISTASInstituto Sindical de Trabajo Ambiente y Salud
IUPACInternational Union of Pure and Applied Chemistry
IWMBCalifornia Integrated Waste Management Board (Cal/EPA)

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Letter J

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JCAHOJoint Commission on Accreditation of Healthcare Organizations. Accreditation by this body is necessary for US federal research grants, medicare reimbursement, etc.
JHAJob Hazard Analysis

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Letter K

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There are no definitions for the the letter K.

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Letter L

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LAERLowest Achievable Emission Rate
LANLLos Alamos National Laboratory
LAOLocation Administrative Officer
LC-50The concentration in air which is lethal to 50% of the test animals in a study.
LCDLiquid Crystal Display
LD-50The experimental dose which is lethal to 50% of the test animals in a study. A convenient point of comparison between toxic materials with similar effects or target organs.
LDPELow-Density Polyethylene
LDRLand Disposal Restrictions (RCRA)
LEALocal Enforcement Agency
LECLocal Emergency Coordinator
LEDLight-Emitting Diode
LELLower Explosive Limit - The minimum percent by volume of a gas or vapor, which when mixed with air, will form a flammable mixture.
LEPCLocal Emergency Planning Committee
LIHLicensed Industrial Hygienist, a title conferred under the Illinois (USA) licensing program for Industrial Hygiene.
LIMSLaboratory Information Management System
LLDPELinear Low Density Polyethylene
LLRWPALow Level Radioactive Waste Policy Act, 42 USC Section 2021(b)
LOAELlowest -observed-adverse-effect level
LOISLoss of Interim Status (for TSDF)
LPGLiquefied Petroleum Gas, aka Propane
lpmLiters per minute
LRAPALane Regional Air Pollution Authority (Lane County, Oregon)
LRPOLocation Radiation Protection Officer
LSOLaser Safety Officer - The person designated by a site where lasers are used, who has responsibility and authority to ensure the safe use of lasers.
LSIThe Laboratory Safety Workshop
LUFTLeaking Underground Fuel Tank
LUSTLeaking Underground Storage Tank
LWDIILost Workday Injury and Illness

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Letter M

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MMolarity (M) a unit of concentration equal to 1 mole of a substance in 1 L of solution.
MA
Molecular Absorption, Absorption of radiation by molecules. Examples of analytical methods using this property include : UV/VIS, IR, FTIR
MACTMaximum Available Control Technology
MAWPMaximum Allowable Working Pressure
MCLMaximum Concentration Limits or Maximum Contaminant Levels (SDWA)
MCLGsMaximum Contaminant Level Goals (SDWA)
MCSMultiple Chemical Sensitivity
MEMolecular Emission, emission of electromagnetic radiation by a complete molecule. Often called Fluorescence or Phosphorescence.
MECOModern Engineering Company
MEKMethyl Ethyl Ketone
mg/m3Milligrams per meter cubed
milOne mil equals 1/1000 of an inch
MISManagement Information Systems
MISMaster of Industrial Safety, the degree granted by the University of Minnesota (Duluth) to those who successfully complete the Master's program
mlmilliliter, also mL
MMADmass median aerodynamic diameter.
MOUMemorandum of Understanding
mppcfMillion particles per cubic foot
MPRSAMarine Protection, Research and Sanctuaries Act, 16 USC Section 1431 et seq
MRPMedical Removal Protection
MSMass Spectroscopy Identifies compounds by breaking them up into all combinations of ions and measuring mass-to-charge ratios at detector
MSAMine Safety Appliances
MSDSMaterial Safety Data Sheet Provided by chemical manufacturers, required by OSHA to be available to workers
MSHAMine Safety and Health Administration, an agency of the US Department of Labor
MTBMaterials Transportation bureau of the US Department of Transportation
MTDMaximum Tolerated Dose
MTUMobile Treatment Unit
Mutagen
an agent (as a chemical or various radiations) that tends to increase the frequency or extent of mutation (genetic damage)
MUTCDManual for Uniform Traffic Control Devices
MVAMotor Vehicle Accident
MWAMidwest Area (of USDA ARS)

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Letter N

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Letter N

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NAA Non-Attainment Areas (CAA and California CAA)
NAA North Atlantic Area (used within USDA, ARS -United States Department of Agriculture, Agricultural Research Service)
NAAQS National Ambient Air Quality Standards (CAA)
NACHO National Association of Chemical Hygiene Officers
NAICS North American Industry Classification System
NAS National Academy of Sciences
NBAR Nonbinding Allocation of Responsibility
NBC
Nuclear, biological and/or chemical hazard. Also sometimes referred to as CBR (Chemical, biological or radiological hazard)
NCIC National Crime Information Center
NCP National Contingency Plan (CERCLA)
NCRIC National Chemical Response and Information Center
NDPES National Pollutant Discharge Elimination System
NEBOSH National Examining Board of the Institution of Occupational Safety and Health. In the UK, NEBOSH run a certificate and a diploma course. Anyone that attains the diploma can join the Institution as a full member
NEIC National Enforcement Investigations Center (US EPA)
NEMA National Electrical Manufacturer's Association
NEPA National Environmental Policy Act, 42 USC Section 4321
NESHAPs National Emission Standards for Hazardous Air Pollutants (EPA, CAA)
NETA National Environmental Training Association, a US based organization which issues the CET credential.
NFC National Fire Code
NFPA National Fire Protection Association publishes useful hazard ratings on many chemicals. Not a regulatory
NFR National Fire Rating
NH3 Ammonia
NHTSA National Highway Traffic Safety Administration
NiCad Nickel Cadmium (battery)
NIEHS National Institute of Environmental Health Sciences, a component of the NIH
NIH National Institutes of Health - the primary health research umbrella organization of the US government, consisting of a number of specialized institutes, the CDC, and the National Library of Medicine
NIHL Noise Induced Hearing Loss
NIMBY Not In My Backyard Syndrome
NIOSH National Institute for Occupational Safety & Health An arm of the US Centers for Disease Control, it does research and suggests guidelines for exposure control, but is not a regulatory agency.
NIST National Institute of Standards and Technology, a US federal agency in the Department of Commerce. NIST is the successor to the US National Bureau of Standards.
NMFC National Motor Freight Class
NMR Nuclear Magnetic Resonance Spectroscopy used to identify structures of organic compounds by seeing how they react to magnetic fields of various frequencies
NO2 Nitrogen Dioxide
NOAA National Oceanic and Atmospheric Administration
NOAEL no-observed-adverse-effect level
NOC Notice of Commencement
NOS Not Otherwise Specified, DOT terminology used in shipping names
NOV Notice and Violation
NOX Oxides of nitrogen. Also NOx. Term is used where the particular oxide is unimportant or where a mixture is being discussed.
NPA North Plains Area (used within USDA, ARS -United States Department of Agriculture, Agricultural Research Service)
NPDES National Pollutant Discharge Elimination System (CWA)
NPL National Priority List (CERCLA)
NPR Notice of Proposed Rulemaking, one step in the formal process of issuing regulations by US Agencies.
NPT National Pipe Thread
NPTF National Pipe Thread Fine
NRC National Response Center (Federal)
NRC Nuclear Regulatory Commission, the US Federal Regulatory Agency which deals with radiation and radioactive materials.
NRCC National Registry of Clinical Chemists, administer CHO testing and certification
NREP National Registry of Environmental Professionals, Glenview, IL, (708) 724-6631
NRR Noise Reduction Rating, used as a laboratory based indicator of the relative effectiveness of hearing protectors.
NRTL Nationally Recognized Testing Laboratory
NSC National Safety Council, a US (Chicago) based safety organization dealing with industrial safety, school and college safety, transportation safety. The NSC has both organizational and individual membership and publishes a number of safety oriented pamphlets, journals, books, and data sheets. The image of a green cross on a shield together with the words "Green Cross for Safety" are trademarks controlled by NSC. Mailing address is: 1121 Spring Lake Dr.,Itasca, Illinois 60143, USA
NSF National Science Foundation
NSF National Sanitation Foundation
NSN New Substances Notification - required for new substances under CEPA, the Canadian equivalent of the US's PMN
NSPS New Source Performance Standards (CWA and CAA)
NSR New Source Review (California CAA)
NTIS National Technical Information Service
NTP Normal temperature and pressure
NTP National Toxicology Program, a program of the US government under NIEHS for the testing of chemical agents for long term toxic effects
NWPA Nuclear Waste Policy Act, 42 USC Section 10101 et seq

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Letter O

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O&MOperation and Maintenance
OAHOffice of Administrative Hearings (California)
OALOffice of Administrative Law (California)
OAROregon Administrative Rules
OBESOffice of Basic Energy Sciences (DOE)
OCMVOpen Container In Morot Vehicle
ODOutside Diameter
ODPOpen-Dripproof
OECMOffice of Enforcement and Compliance Monitoring (US EPA)
OEHHAOffice of Environmental Health Hazard Assessment (Cal/EPA)
OESOffice of Emergency Services (California)
OHMPOccupational Health Maintenance Program
OLNOperator's License Number (driver's licence)
OMBOffice of Management and Budget (Federal)
ONWIOffice of Nuclear Waste Isolation (Federal)
ORMOther Regulated Material (DOT terminology)
ORMOther Regulated Materials Terminology used in hazardous materials shipping documents.
OR-OSHAOregon Occupational Safety and Health Administration
ORPOxidation Reduction Potential
ORPSOccurrence Reporting and Processing System
ORROperational Readiness Review
OSAOffice of the State Architect (California)
OSCOn Scene Coordinator
OSHAOccupational Safety & Health Administration, a part of the US Department of Labor, it regulates many job safety issues, including chemical handling and storage; also Occupational Safety & Health Act, the US Federal legislation which created OSHA (the Administration) and NIOSH.
OSHRCOccupational Safety and Health Review Commission, provides the ultimate administrative review of challenges to OSHA citations. Its decisions may be appealed to the US Federal Court system.
OSWEROffice of Solid Waste and Emergency Response, an agency of the US EPA
OTAOffice of Technology Assessment, a staff arm of the US Congress
OV/AGOrganic Vapor/Acid Gas (somewhat misleading term referring to capabilities of certain air-purifying respirator cartridges)
OWGOperations Working Group

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Letter P

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PA/SIPreliminary Assessment/Site Investigation
PAHPolynuclear Aromatic Hydrocarbons
PAGE
Polyacrylamide gel electrophoresis
PAMPerformance Assessment Matrix
PAPRPowered Air-Purifying Respirator
Part AThe overview portion of a TSDF HW permit application, under RCRA
Part BThe detailed portion of a TSDF HW permit application, under RCRA
PBRPermit by Rule
PBTPortable Breathalyzer Test
PBTAn additional meaning is "Persistent Bioaccumulative and Toxic" per US EPA
PCAProperty Clearance Assessment
PCBPolychlorinated biphenyls (includes monochlorinated biphenyls, under US environmental regulations)
PCDFPolychlorinated Dibenzofurans
PCEPerchloroethylene
pCi/Lpico Curies/Liter
PEProfessional Engineer
PEAPreliminary Endangerment Assessment
PELPermissible Exposure Limit, the maximum occupational exposure permitted under the OSHA regulations.
PETGPolyethylene Terephthalate G Copolyester
pHacidity/basicity   pH = -log[H] where [H] is hydrogen ion concentration.  A pH = 7 is neutral; pH > 10 is pretty alkaline; pH <3 is pretty acidic
PHAPreliminary Hazards Analysis
PHAProcess Hazards Analysis - a general term describing the formal activity of reviewing, analyzing, and documenting the hazards likely to be associated with a particular industrial process. Often implies the use of a formal review method such as FTA, FMEA, HAZOP, etc.
PHSParticularly Hazardous Substance (as defined in 29 CFR 1910.1450)
PIDPhoto Ionization Detector
PIHPoison Inhalation Hazard
PLPublic Law (Federal)
PM10Particulate Matter less than 10 microns in diameter
PMNPre-Manufacture Notification, required under TSCA.
POPPerformance-Oriented Packaging
Potential
Having or showing the capacity to develop into something in the future.
POTWPublicly Owned Treatment Works (waste water treatment)
POVPrivately Owned Vehicle
PPAPerformance Partnership Agreement
ppbParts per billion
PPEPersonal Protective Equipment Includes goggles, gloves, shoes, coveralls, respirators, hard hats, etc.
ppmParts of contaminant Per Million parts of air or other fluid. Usually called simply "parts per million" - a unit of measure of the concentration of one material mixed or dissolved into another. This unit may be converted to milligrams per cubic meter.
PRCSPermit Required Confined Space
PRPPotentially Responsible Party (Superfunds)
PSAPreliminary Site Assessment
PSBPublic Safety Building
PSDPrevention of Significant Deterioration (CAA)
PSDIPresence Sensing Device Initiation
PSELPlant Specific Emission Limit
psiPounds per square inch
PSIPollution Standards Index (Air)
psigPounds per square inch gauge
PSMProcess Safety Management
PVAPolyvinyl Alcohol
PVCPolyvinyl Chloride

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QA/QCQuality Assurance/Quality Control
QRAQuantitative Risk Assessment

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R&DResearch and Development
RAPRemedial Action Plan (Superfunds)
RCRAResource Conservation and Recovery Act - US Federal legislation which regulates materials and wastes currently being generated, treated, stored, disposed or distributed.
RDReporting District
RD/RARemedial Design/Remedial Action
REARegistered Environmental Assessor (California)
REEResearch, Education, and Economics (agencies of USDA)
REHSRegistered Environmental Health Specialist (California, formerly Registered Sanitarian)
RELrecommended exposure limit; This abbreviation usually refers to a recommendation formally made by NIOSH and published in a Criteria Document for a particular agent or category of agents.
REMRegistered Environmental Manager. This credential is administered through the National Registry of Environmental Professionals (NREP). To receive the REM designation, NREP requires you to submit copies of your college transcripts, listing of specialty training, two professional references and a description of your professional experience, and how it relates to environmental management. Then you can take a comprehensive test in environmental management
RFARCRA Facilities Assessment
RFIRadio Frequency Interference
RGRegistered Geologist
RI/FSRemedial Investigation/Feasibility Study
RIHRegistered Industrial Hygienist, a title conferred by the State of Tennessee under its title protection legislation. (see APIH)
RMIRepetitive Motion Injury
RMPRisk Management Program The CAA requires major facilities to have a written program to prevent releases to the environment in case of an accident.
RMPPRisk Management and Prevention Plan, H&S Code Section 25531
RMSRoot Mean Squared
RODRecord of Decision (CERCLA)
ROHRegistered Occupational Hygienist
ROHTRegistered Occupational Hygiene Technologist
RPReporting Party
RPResponsible Party (CERCLA), 42 USC Section 9607(a)
RPIHRegistered Professional Industrial Hygienist, a title conferred by the State of Tennessee under its title protection legislation. (see APIH)
RQReportable Quantity (under DOT CERCLA and SARA Title III)
RQGReduced Quantity Generator (100-1000 kg/mo)
RRPTRegistered Radiation Protection Technologist, a designation used in the US by those active in radiation protection in the Nuclear Power generation industry
RSIRepetitive Strain Injury
RSORadiological Safety Officer or Radiation Safety Officer The individual designated for a particular site, where radiation is in use, who has responsibility and authority to ensure safe and appropriate use of radiation and radiation sources
RSPAResearch and Special Programs Administration
RTECSRegistry of Toxic Effects of Chemical Substances, a registry maintained and issued by NIOSH, listing all published studies in which a toxic effect was reported. Study quality is not reviewed, and studies reporting no toxic effects are not included in the registry.
RTKRight to Know -- May refer to an individual employee's right to know about the nature and hazards of agents used in the work place, and/or to the right of communities and their members to know about materials used and wastes generated by workplaces situated within or adjacent to the community.
RVPReid Vapor Pressure
RWQCBRegional Water Quality Control Board (California)

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S&EPSafety and Environmental Protection
SAASouth Atlantic Area (used within USDA, ARS -United States Department of Agriculture, Agricultural Research Service)
S.E.T.R.A.F.Safety of Enclosures for Toxics using Recirculating Air Filtration
SADTSelf-Accelerating Decomposition Temperature
SAESociety of Automotive Engineers
SAFSafety Approval Form
SARSafety Analysis Report
SARASuperfund Amendments and Reauthorization Act - US federal Legislation which reauthorized the "Superfund", a fund intended to clean up existing hazardous waste sites. It also established a federal community Right to Know and tightened industrial reporting requirements.
SARA Title IIIEmergency Preparedness and Community Right-to-Know Section of SARA, aka EPCRA
SBSenate Bill (California)
SB 14Hazardous Waste Source Reduction and Management Review Act, H&S Code Section 2524412 et seq Porter-Cologne Water Code Section 13200 et seq Water Act Proposition 65 Safe Drinking Water and Toxic Enforcement Act, H&S Code Section 252495 et seq
SBRStyrene Butadiene Rubber
SCAQMDSouth Coast Air Quality Management District (California)
SCBASelf-Contained Breathing Apparatus
SCTSpectrum Control Technology
SDS
1) sodium dodecyl sulfate
2) Safety Data Sheet, new standardized replacement for Material Safety Data Sheet (MSDS) under global harmonization.
SDWASafe Drinking Water Act (Federal), 42 USC Section 300 et seq
SEAPPMSafety and Environmental Administrative Policy and Procedures
SECSecurities Exchange Commission
SEISafety Equipment Institute
SERCState Emergency Response Commission
SHEMSafety, Health, and Environmental Management
SHEPSafety, Health, and Environmental Program
SICStandard Industrial Classification
SIPState Implementation Plan (CAA)
SITESuperfund Innovative Technology Evaluation
SNURSignificant New Use Rule, a regulatory term appearing in TSCA related considerations.
SO2Sulfur Dioxide
SOBSouls on Board (aircraft)
SOPStandard Operating Procedures
SOTSociety of Toxicology, a US-based, international professional society
SOxOxides of sulfur. Used when the particular oxide is unimportant to the discussion, or when a mixture is being referred to.
SPCCSpill Prevention, Control (or Containment) and Countermeasures
SQGSmall Quantity Generator (of waste), a status that relieves the generator of some EPA requirements
SRSenate Report (Federal bill originated in Senate)
SRPScientific Review Panel (California)
SSEStationary Source Enforcement
STCCStandard Transportation Commodity Code (used in rail shipment of hazardous materials)
STELShort Term Exposure Limit (chemical exposure)
STLESociety of Tribologists and Lubrication Engineers
STPStandard Temperature and Pressure
SUDSafe Use Determination
SWAGScientific Wild-Ass Guess (no offense please; this is truly a commonly used acronym in many fields of study, meaning, presumably, an educated guess)
SWASolid Waste Act (aka RCRA)
SWATSolid Waste Assessment Test
SWDASolid Waste Disposal Act (US legislation)
SWISSolid Waste Information System
SWMPStormwater Monitoring Program
SWMUSolid Waste Management Unit
SWPPPStormwater Pollution Prevention Program
SWRCBState Water Resources Control Board (Cal/EPA)

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Letter T

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TACToxic Air Contaminant, 42 USC Section 7412; H&S Code Section 39655; Food & Ag Code Section 14021
TBtuberculosis
TCDDTetrachlorobenzo-p-dioxin, also called simply "dioxins" in the popular press.
TCETrichloroethylene
TCLPToxicity Characteristic Leaching Procedure, a process specified by EPA for determining whether a material meets the definition of a toxic waste for regulatory purposes in the US.
TCPAToxic Catastrophe Prevention Act (N.J.A.C. 7:31) This is legislation in the state of New Jersey which was a partial response to incidents such as that at Bophal, India and established requirements intended to reduce the liklihood of a catastrophic incident.
TDSTotally Dissolved Solid
TEELTemporary Emergency Exposure Limit
TEFCTotally Enclosed Fan-Cooled
TISETake It Somewhere Else Syndrome
Title III(of SARA) Community Right-to-Know and Emergency Response Provisions (aka EPCRTKA)
TLVThreshold Limit Value, an exposure limit recommended by the ACGIH to which it is believed nearly all workers can be exposed day after day for a working lifetime without ill effect.
TMETest Marketing Exemption
TOCTotal Organic Carbon
TPCAToxic Pits Cleanup Act, H&S Code Section 25208 et seq
TPOTemporary Protection Order
TPQThreshold Planning Quantity (SARA Title III)
TQThreshold Quantity Facilities releasing TQs or greater into the environment, whether intentionally as wastes or unintentionally in an accident, must report to the EPA
TQMTotal Quality Management, the name of a management system or philosophy involving the use of employee participation, Quality Committees, formalized problem solving methods, and a focus on product quality and customer requirements.
TRItoxics release inventory, an inventory required under US environmental regulations.
TSCAToxic Substances Control Act (US legislation)
TSDTreater, Storer, Disposer H&S Code Section 251233
TSDFTreatment, Storage, Disposal Facility (hazardous waste)
TSITransportation Safety Institute - US DOT Research and Special Programs Administration section offers classes in Oklahoma City, OK
TSRTechnical Safety Requirement
TSSTotal Suspended Solids
TTUTransportable Treatment Unit
TWATime Weighted Average

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Letter U

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UBCUniform Building Code
UELUpper Explosive Limit
UFCUniform Fire Code
UGSTUnderground Storage Tank
UGTUnderground Tank
UICUnderground Injection Control, H&S Code Section 2515910, SDWA, RCRA
ULUnderwriter's Laboratories, one of a number of agencies that test and approve various products for safety and then permit the manufacturer to display their seal on the product as an indication of that testing.
ULCUnderwriter's Laboratory of Canada
ULPAUltra-Low Penetration Air (filtration)
UMUniform Manifest
UNUnited Nations
US EPAUnited States Environmental Protection Agency
USCUnited States Code
USCGUnited States Coast Guard
USDAUnited States Department of Agriculture
USDWUnderground Source of Drinking Water (SDWA)
USFDAUnited States Food and Drug Administration
USMUnited States Marchal
USPUnited States Pharmacopoeia
USTUnderground Storage Tank
UVUltraviolet
UVUltraviolet (EM radiation slightly higher in energy than visible)
UVCEUnconfined Vapor Cloud Explosion
UV-VisUltraViolet-Visible Spectroscopy in the visible and higher energies of light.

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Letter V

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VAVVariable Air Volume - hood motor speed varies or damper action provides for variable cfms pulled, depending usually on face opening size or sash height.
VDTVideo Display Terminal
VEOVisible Emissions Observation
VHAPVolatile Hazardous Air Pollutant
VOCVolatile Organic Compound
VPPVoluntary Protection Program - An OSHA program which promotes excellence in workplace safety and health programs in exchange for limitations on scheduled inspections by OSHA.

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Letter W

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WBGTWet Bulb Globe Temperature
WDRWaste Discharge Requirements
WEELWorkplace Environmental Exposure Limit
WHMISWorkplace Hazardous Materials Information System This is a program is legislated by the Canadian government, which requires, among other things, the creation and availability of material safety data sheets. However, in several of the Canadian Provinces, many functions associated with Federal OSHA in the US are controlled instead at a Provincial level
WHOWorld Health Organization
WPSWorker Protection Standard - pesticide safety - Part 170 of Subchapter E, Chapter I of Title 40 CFR) (PDF format from EPA)
WQAWater Quality Act of 1987 (Federal, FWPCA)
WSOWorld Safety Organization
WWTPWastewater Treatment Plant

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Letter X

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There are no definitions for the letter X.

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Letter Y

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Letter Z

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Z listThe OSHA table of Permissible Exposure Limits, so named because the tables are identified as Z-1, Z-2, and Z-3, and because they are found in "Subpart Z - Toxic and Hazardous Substances" of the OSHA regulations. This subpart contains 29 CFR 1910.1000 through 29 CFR 1910.1500.

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