Spill Control Glossary — Complete A-Z Reference of Terms, Standards and Regulations

This comprehensive A-Z glossary covers every significant term, standard, regulation and technical concept relevant to spill control and hazardous substance management in the UK. Whether you are conducting a COSHH assessment, specifying bunding for a chemical store, or training staff in spill response, this reference gives you the authoritative definitions you need.

A

Absorbency
The capacity of a material to take up and retain liquid, measured in litres per kilogram (L/kg) or grams per gram (g/g). Polypropylene spill absorbent pads typically absorb 1–1.4 L per 100g pad. Loose granular absorbents for oils typically achieve 0.8–2.0 L/kg. Selecting the correct absorbency rating for the volume and type of liquid is critical in spill kit specification.

Absorbent Booms
Cylindrical absorbent barriers placed on water surfaces or across drainage channels to intercept floating hydrocarbons or chemicals before they spread. Typically 3–6 m in length with a polypropylene fill and mesh outer. Used in conjunction with drain covers during initial spill response.

Absorbent Granules
Free-flowing mineral, clay or synthetic polymer particles used to absorb liquid spills on hard surfaces. Clay-based granules are low-cost and suited to general hydrocarbons; synthetic polymer granules offer higher capacity and are used for acids, alkalis and aggressive chemicals.

Absorbent Pads
Flat sheet absorbent products used to mop up small liquid spills, place under leaking equipment, or line drip trays. Available in oil-only (white), chemical (yellow/white) and universal (grey) grades. Standard sizes: 40 cm × 50 cm and 50 cm × 40 cm.

Absorbent Socks
Tubular absorbent barriers used to encircle spills, block drains, and contain liquids on flat surfaces. Filled with polypropylene fibres. Available in 1.2 m and 3 m lengths. Particularly effective for perimeter containment during liquid decanting operations.

ADR (Agreement concerning the International Carriage of Dangerous Goods by Road)
The European Agreement governing the transport of dangerous goods by road, implemented in the UK through the Carriage of Dangerous Goods and Use of Transportable Pressure Equipment Regulations 2009. ADR classifies substances into nine hazard classes, sets packaging standards, requires vehicles to carry emergency information (TREMCARD), and mandates driver training (ADR certificate). Spill kits carried on ADR vehicles must be appropriate to the substances being transported and the quantity carried.

Alkali
A substance with a pH above 7, typically corrosive to skin, eyes and many materials. Alkaline spills such as sodium hydroxide, ammonia solution and cement washout require chemical-grade absorbents and appropriate PPE (nitrile or neoprene gloves, face shield). Alkaline spills to controlled waters are a statutory offence under the Environmental Permitting (England and Wales) Regulations 2016.

ATEX (Atmosphères Explosibles)
The EU/UK regulatory framework for equipment and protective systems used in potentially explosive atmospheres, implemented through the Equipment and Protective Systems Intended for Use in Potentially Explosive Atmospheres Regulations 2016 (UK ATEX) and supported by DSEAR. ATEX zones are classified as:
Zone 0: Explosive atmosphere present continuously or for long periods.
Zone 1: Explosive atmosphere likely in normal operation.
Zone 2: Explosive atmosphere not likely in normal operation, but possible.
Zones 20/21/22 apply to combustible dust. Spill control equipment used in ATEX zones must be appropriately rated and anti-static.

B

Bund / Bunding
A secondary containment enclosure constructed around tanks, IBCs, drums or chemical stores to capture liquid in the event of a primary container failure or spillage. Bunds may be constructed from concrete, steel, GRP (glass reinforced plastic), or modular polymer systems. Under UK Environment Agency guidance (PPG2), bunds for oil storage must contain at least 110% of the volume of the largest tank, or 25% of the total tank capacity, whichever is greater. For chemical storage, HSE guidance requires similar volumes tailored to the risk.

Bund Volume (Calculation Method)
UK standard practice follows Environment Agency PPG2: bund volume = 110% × volume of largest single container within the bund. For multiple containers: confirm 110% of largest OR 25% of total volume is met. For example, a single 1,000-litre IBC requires a bund with minimum effective volume of 1,100 litres. Effective volume must account for bund walls, pipe penetrations and any permanent fittings within the bunded area that displace usable volume.

Bunded IBC
An Intermediate Bulk Container fitted with an integral secondary containment pallet or sump, providing built-in 110% containment. Typically fabricated from polyethylene inner cage within a steel outer frame, mounted on a sump pallet rated for the full 1,000-litre contents. Removes the need for a separate bund when storing single IBCs.

Bunded Drum Store
A secure, lockable outdoor or indoor storage unit with integral bunding, designed to store 200-litre drums. Typically steel or GRP construction with slatted flooring over a sealed sump. Many models incorporate ventilation, fire-rated panels, and hazard warning signage compliant with CLP Regulation.

C

CDM 2015 (Construction Design and Management Regulations 2015)
UK regulations placing legal duties on clients, principal designers and principal contractors to manage health, safety and environmental risks on construction projects. Principal contractors must prepare a Construction Phase Plan including spill prevention measures for fuel, oil, concrete and chemical storage.

Chemical Resistant
A material's ability to withstand prolonged contact with specific chemicals without degrading, swelling, cracking or losing structural integrity. Chemical resistance ratings are expressed as suitability grades (e.g., Excellent, Good, Fair, Not Recommended) for specific chemicals. Always verify the chemical resistance chart for any bund, sump or containment material against the specific substance stored.

CLP Regulation (Classification, Labelling and Packaging)
The UK CLP Regulation (retained from EU Regulation EC 1272/2008) governs the classification of chemicals according to their physical, health and environmental hazards, and requires appropriate labelling with GHS pictograms, signal words (Danger/Warning), and hazard (H) and precautionary (P) statements. All hazardous substances in UK workplaces must be correctly classified and labelled under CLP.

Containment Volume
The actual liquid volume a bund, sump or spill containment system can hold, distinct from the nominal or rated volume. Containment volume must account for displacement by pipework, fittings, the containers themselves, and any other objects within the bunded area. Always calculate net containment volume rather than gross internal dimensions.

COSHH (Control of Substances Hazardous to Health)
The Control of Substances Hazardous to Health Regulations 2002 (as amended) impose a legal duty on UK employers to prevent or adequately control employee exposure to hazardous substances. Key COSHH obligations include: conducting COSHH assessments for each hazardous substance, implementing the hierarchy of controls (elimination, substitution, engineering controls, PPE), providing health surveillance where required, and maintaining records. Spill containment and clean-up procedures must be included in COSHH assessments for liquid hazardous substances.

COSHH Assessment
A documented evaluation of risks posed by hazardous substances in a workplace, required under Regulation 6 of COSHH. The assessment must identify the substance, its hazard classification, routes of exposure, exposure levels (against WELs), existing controls, and required additional controls including spill response procedures.

D

Decanting
The transfer of liquids from one container to another, typically from bulk storage (IBC or drum) to smaller working containers. Decanting operations present significant spill risk and must be conducted over drip trays or within a bunded area, using appropriate dispensing equipment (drum pumps, taps, funnels) and with appropriate PPE. COSHH assessments must specifically cover decanting procedures.

Drip Tray
A shallow containment tray positioned beneath equipment, tanks, drums or decanting areas to capture minor leaks and drips before they reach the floor or drains. Available in polyethylene, steel and GRP. Sized to hold the volume of liquid likely to drip during normal operations—not the full container volume (which requires a bund).

DSEAR (Dangerous Substances and Explosive Atmospheres Regulations 2002)
UK regulations requiring employers to assess and control risks from dangerous substances (flammable liquids, gases, reactive chemicals) that could cause fire, explosion or similar hazardous energy release. DSEAR assessment must identify hazardous areas, implement ATEX zoning, select appropriate equipment and prevent ignition sources. Flammable liquid spill response is a key element of DSEAR compliance.

E

EA (Environment Agency)
The regulatory body responsible for protecting the environment in England, including enforcement of water pollution, waste management and industrial permitting legislation. The EA publishes Pollution Prevention Guidance (PPG) notes for industry sectors and can prosecute businesses for pollution incidents including liquid spills that reach controlled waters.

ELV Regulations (End of Life Vehicles)
The End-of-Life Vehicles Regulations 2003 require authorised treatment facilities (ATFs) to depollute vehicles before dismantling, including removal of fuel, oil, brake fluid, coolant and battery acid. ATFs must have appropriate spill containment for all removed fluids.

Environmental Permitting Regulations (EPR) 2016
The Environmental Permitting (England and Wales) Regulations 2016 require operators of certain activities (waste treatment, industrial processes, water discharge) to hold an environmental permit issued by the EA or Local Authority. Spill incidents that breach permit conditions can result in permit suspension, prosecution and unlimited fines.

EPDM (Ethylene Propylene Diene Monomer)
A synthetic rubber elastomer with excellent resistance to weathering, ozone, UV, steam and many dilute chemicals. EPDM is widely used for bund liners, chemical-resistant seals, and flexible spill containment mats. Key material properties: temperature range typically −40°C to +150°C; good resistance to water, dilute acids and alkalis; poor resistance to hydrocarbon fuels and oils (use NBR or neoprene for these).

Exposure Limit
See OEL / WEL.

F

Fire Point
The lowest temperature at which a liquid produces sufficient vapour to sustain continuous combustion once ignited, typically 5–10°C above the flash point. Used alongside flash point in flammable liquid risk assessments.

Flash Point
The minimum temperature at which a liquid gives off enough vapour to ignite momentarily when an ignition source is applied. Flash point is the primary criterion for classifying flammable liquids:
H224 (Extremely flammable): Flash point < 23°C and initial boiling point ≤ 35°C (e.g., diethyl ether, pentane).
H225 (Highly flammable): Flash point < 23°C and initial boiling point > 35°C (e.g., acetone, ethanol, petrol).
H226 (Flammable): Flash point 23–60°C (e.g., diesel, white spirit, xylene).
Spill response for flammable liquids must eliminate all ignition sources immediately and use non-sparking tools and anti-static absorbents.

Flammable Liquid Classes (GHS/CLP)
GHS and CLP classify flammable liquids into three categories based on flash point and boiling point:
Category 1 (H224): Extremely flammable liquid and vapour. Flash point < 23°C, initial boiling point ≤ 35°C.
Category 2 (H225): Highly flammable liquid and vapour. Flash point < 23°C, initial boiling point > 35°C.
Category 3 (H226): Flammable liquid and vapour. Flash point 23–60°C.
Storage and spill response requirements increase with hazard category.

Fuel Bowser
A portable fuel storage and dispensing unit, typically mounted on a trailer or skid for use on construction sites, agricultural operations and remote locations. Fuel bowsers holding diesel or petrol above certain thresholds require bunded construction (Environment Agency guidance: above 200 litres for mobile plant fuel storage) and must comply with the Control of Pollution (Oil Storage) Regulations 2001 in Wales or equivalent EA guidance in England.

G

GHS (Globally Harmonised System of Classification and Labelling of Chemicals)
The United Nations framework for classifying and communicating chemical hazards, implemented in the UK through the CLP Regulation. GHS uses standardised pictograms (flame, skull, corrosion, environment), signal words (Danger/Warning), hazard statements (H-phrases) and precautionary statements (P-phrases). Understanding GHS classification is essential for spill kit specification and COSHH assessment.

GRP (Glass Reinforced Plastic)
A composite material of glass fibre reinforcement in a polyester or epoxy resin matrix, widely used for bund construction, chemical storage tanks and spill containment trays. GRP offers excellent chemical resistance, high strength-to-weight ratio, and corrosion resistance. Chemical resistance varies with resin type; always verify against specific substances stored.

H

H-Statements (Hazard Statements)
Standardised phrases assigned to chemicals under GHS/CLP to describe the nature and degree of hazard. H-statements are coded H2xx (physical hazards), H3xx (health hazards), H4xx (environmental hazards). Key H-statements for spill control include H224/H225/H226 (flammable), H314 (skin corrosion/burns), H400/H410 (very toxic to aquatic life).

Hazardous Substance
Under COSHH, a hazardous substance is defined as: any substance classified as hazardous under CLP; any substance assigned a Workplace Exposure Limit (WEL); biological agents; any dust in substantial concentrations; any substance specifically listed. For spill control purposes, this includes flammable liquids, corrosives, toxic chemicals, oils, fuels and many cleaning agents.

HDPE (High Density Polyethylene)
A thermoplastic polymer with excellent chemical resistance to acids, alkalis, solvents and petroleum products. Widely used for IBC liners, drum manufacture, spill pallets and bund construction. HDPE offers UV resistance, low moisture absorption and can be welded for leak-free containment structures.

HMIS (Hazardous Materials Identification System)
A US-origin numerical hazard rating system (0–4) for health, flammability and physical hazards. Less commonly used in the UK than GHS/CLP but may appear on some imported product SDS.

I

IBC (Intermediate Bulk Container)
A standardised large-volume container for bulk liquid storage and transport. Standard IBC dimensions: approximately 1.2 m × 1.0 m × 1.15 m (L × W × H). Nominal capacity: 1,000 litres (275 US gallons). Constructed with HDPE inner vessel within a galvanised steel cage on a wooden or plastic pallet. IBCs require a bunded pallet or containment area providing 110% (1,100 litres) secondary containment. UN-certified IBCs are required for transport of hazardous liquids under ADR.

IBC Bund Pallet
A secondary containment pallet designed specifically for 1,000-litre IBCs, with a sump capacity of typically 1,100 litres. Available in polyethylene and steel. Steel versions suitable for flammable liquid IBCs; polyethylene versions suited for aggressive chemicals. Always confirm the pallet's chemical resistance is appropriate for the substance stored.

J

Jetted Drain Cover
See Spill Drain Cover.

K

kg/m² Loading
The structural load rating of a spill pallet, bund floor or containment platform, expressed in kilograms per square metre. Critical when specifying containment for heavy IBCs (an IBC filled with water weighs approximately 1,050 kg), drum stacks or vehicle-mounted spill equipment. Always verify floor load bearing capacity before installing heavy containment systems.

L

LEV (Local Exhaust Ventilation)
An engineering control that captures and removes airborne contaminants (vapours, fumes, dust, mist) at or near the source, before they can disperse into the workplace atmosphere. LEV is commonly used in chemical decanting areas, drum storage, laboratory chemical handling and painting operations. Under COSHH Regulation 9, LEV must be thoroughly examined and tested at least every 14 months.

LOLER (Lifting Operations and Lifting Equipment Regulations 1998)
UK regulations governing the safe use of lifting equipment in the workplace. LOLER is relevant to spill control where drum lifters, IBC hoists, fork lifts used to move chemical drums or IBCs, or overhead cranes for tank lifting are in use. Equipment must be thoroughly examined by a competent person every 6 months (when used for lifting persons) or 12 months (other lifting equipment).

Lower Explosive Limit (LEL)
The minimum concentration of flammable vapour or gas in air at which an explosion can occur. Below the LEL, the mixture is too lean to ignite. Above the Upper Explosive Limit (UEL), it is too rich. LEL/UEL values are published in the SDS Section 9 for flammable substances. Multi-gas detectors calibrated to LEL are essential in enclosed spaces where flammable liquid spills may have occurred.

M

MSDS (Material Safety Data Sheet)
The predecessor term to Safety Data Sheet (SDS). MSDS and SDS are functionally identical—16-section documents providing comprehensive hazard and safe handling information for chemicals. The term SDS is now standard under GHS/CLP; MSDS is obsolete but still encountered on older documentation.

Multi-Gas Detector
A portable electronic instrument that simultaneously monitors the atmosphere for multiple hazards including flammable gas (% LEL), oxygen deficiency, carbon monoxide (CO) and hydrogen sulphide (H₂S). Essential PPE for confined space entry after chemical spills, in fuel/solvent storage areas, and during major spill response.

N

NBR (Nitrile Butadiene Rubber)
A synthetic rubber with excellent resistance to petroleum oils, fuels, hydraulic fluids and many solvents. NBR is the preferred material for seals, gaskets, gloves and chemical-resistant flooring in petroleum and oil storage areas. Temperature range approximately −40°C to +120°C. Inferior resistance to ozone and weathering compared to EPDM.

NITRILE Gloves
Disposable or reusable hand protection manufactured from nitrile rubber, offering chemical resistance superior to latex for many solvents, oils and hydrocarbons. Nitrile gloves are the standard first-line hand protection in most spill response kits. Thickness (typically 0.1–0.4 mm) and breakthrough time must be matched to the chemical hazard.

O

OEL / WEL (Occupational Exposure Limit / Workplace Exposure Limit)
OELs are legally binding or guidance concentrations of airborne substances that should not be exceeded in the workplace. In the UK, WELs are published in EH40 (Workplace Exposure Limits, HSE) and are legally enforceable under COSHH. WELs are expressed as 8-hour time-weighted averages (TWA) and 15-minute short-term exposure limits (STEL) in parts per million (ppm) or milligrams per cubic metre (mg/m³). SDS Section 8 lists relevant WELs for each substance.

Oil Storage Regulations
The Control of Pollution (Oil Storage) (England) Regulations 2001 apply to storage of oil above 200 litres in fixed tanks above ground in England. Key requirements: bund or drip tray with 110% capacity, oil-tight construction, no drainage to watercourse. Similar requirements apply in Wales, Scotland and Northern Ireland under devolved regulations.

P

pH
A logarithmic scale measuring the acidity (pH <7) or alkalinity (pH >7) of a solution. pH 7 = neutral. pH <2 (strong acids: sulfuric, hydrochloric) and pH >12 (strong alkalis: sodium hydroxide) are severely corrosive. pH test strips or electronic pH meters should be included in spill response kits for unknowns.

PPE (Personal Protective Equipment)
Equipment worn to protect the user from health and safety risks, governed by the Personal Protective Equipment at Work Regulations 2022. For spill response, PPE typically includes: chemical splash goggles or face shield, chemical-resistant gloves (nitrile, neoprene, PVC, butyl — selected per SDS), chemical-resistant apron or oversuit, and safety boots. PPE is the last resort in the hierarchy of controls.

PPG (Pollution Prevention Guidelines)
A series of technical guidance documents published by the Environment Agency providing sector-specific advice on preventing pollution incidents. Key PPGs for spill control include:
PPG1: Understanding your environmental responsibilities.
PPG2: Above ground oil storage tanks (bunding requirements).
PPG5: Works in, near or liable to affect watercourses.
PPG6: Working at demolition and construction sites.
PPG26: Drums and intermediate bulk containers.
PPG29: Transporting materials by road.

PUWER (Provision and Use of Work Equipment Regulations 1998)
UK regulations requiring that work equipment (including pumps, dispensing equipment, drum handling equipment) is suitable for its intended use, maintained in good repair, inspected regularly, used only by trained operatives, and fitted with appropriate guarding and controls. Directly relevant to chemical decanting and drum handling operations where spill risk is high.

R

Red Tractor
A UK farm assurance scheme requiring member farms to meet defined standards for environmental management, animal welfare, food safety and worker safety. Relevant to spill control as Red Tractor standards require documented procedures for fuel, pesticide and chemical storage, including bunding, spill response and records of spill incidents.

RIDDOR (Reporting of Injuries, Diseases and Dangerous Occurrences Regulations 2013)
UK regulations requiring employers to report specified workplace incidents to the HSE, including dangerous occurrences such as the accidental release of hazardous substances that could have caused death or major injury. Large chemical spills may trigger RIDDOR reporting obligations.

Risk Assessment
A systematic evaluation of hazards and the likelihood and severity of harm arising from them, required under the Management of Health and Safety at Work Regulations 1999. Spill risk assessments must consider the substances involved, quantities, storage conditions, proximity to drains/watercourses, and available response resources.

S

SDS / MSDS (Safety Data Sheet)
A 16-section standardised document providing comprehensive hazard, safe handling, storage, emergency response and disposal information for a chemical substance or mixture, required under UK REACH and CLP Regulations. The 16 sections are: (1) Identification, (2) Hazard identification, (3) Composition, (4) First aid, (5) Firefighting, (6) Accidental release measures [spill response], (7) Handling and storage, (8) Exposure controls/PPE, (9) Physical/chemical properties, (10) Stability and reactivity, (11) Toxicological information, (12) Ecological information, (13) Disposal, (14) Transport, (15) Regulatory information, (16) Other information. Section 6 is critical for spill response planning.

Secondary Containment
Any system designed to capture liquid released by failure of a primary container or process. Secondary containment includes bunds, drip trays, spill pallets, containment floors, interceptor drains and emergency containment tanks. UK law requires secondary containment for oil storage above 200 litres, hazardous chemical storage, and many environmental permit activities.

Spill Kit
An assembled collection of spill response materials and equipment for immediate use following a liquid spill. A complete spill kit contains: appropriate absorbents (pads, rolls, socks, granules), disposable waste bags, ties, PPE (gloves, eye protection), drain covers, and disposal instructions. Spill kits must be: matched to the substances present, of sufficient capacity to manage the largest foreseeable spill, inspected regularly, and accessible to trained personnel.

Spill Drain Cover
A portable cover, typically polyurethane or rubber, placed over drain inlets during spill events or high-risk operations (refuelling, decanting) to prevent liquid entering the drainage system. Drain covers are an essential component of spill response kits and environmental management plans.

Spill Pallet
A containment platform with an integral sump designed to support drums, IBCs or containers while providing secondary containment beneath. Drum spill pallets typically accommodate 1, 2 or 4 × 205-litre drums with sump capacities of 110–550 litres. Available in polyethylene (chemical compatibility) and steel (flammables).

SSAFO (Silage, Slurry and Agricultural Fuel Oil Regulations 2010)
The Water Resources (Control of Pollution) (Silage, Slurry and Agricultural Fuel Oil) (England) Regulations 2010 set construction standards for agricultural storage of silage, slurry and fuel oil to prevent water pollution. Farm fuel tanks above 1,500 litres must have bunded secondary containment with 110% capacity.

Sump
A recessed collection point within a containment system where spilled liquid pools by gravity for removal. Sumps are incorporated into spill pallets, bunded floors, and drum storage platforms. Distinguished from a bund by being a drainage point rather than a barrier wall. Sump pumps are used to remove accumulated liquid.

T

TREMCARD (Transport Emergency Card)
An emergency information document carried by ADR vehicles transporting dangerous goods, providing first responders with information on the hazards of the load, emergency actions, PPE requirements and spill response procedures. TREMCARDs must be specific to the substance(s) carried.

Tonne
A metric unit of mass (1,000 kg) used in some regulatory thresholds for hazardous substance quantities. COMAH (Control of Major Accident Hazards) thresholds are expressed in tonnes of specific substance categories. Understanding whether quantity thresholds are by mass or volume is essential for regulatory compliance.

U

ÜHP Certification (Überholte Herstellerprüfung)
A German testing and certification mark used for certain types of spill response and containment equipment, particularly relevant to equipment sold into German and European markets. ÜHP-certified products have passed independent manufacturer verification. UK buyers specifying equipment for European operations may encounter ÜHP requirements in tender specifications.

UN Number
A 4-digit identification number assigned by the United Nations to specific hazardous substances and articles for transport purposes (e.g., UN1993 = Flammable liquid, n.o.s.; UN1268 = Petroleum distillates, n.o.s.). UN numbers appear on orange ADR plates, SDS Section 14, and are essential for emergency responders identifying spilled materials from transport incidents.

V

Vapour Density
The density of a gas or vapour relative to air (air = 1). Vapour density determines whether released vapours will accumulate at low levels (vapour density >1, e.g., petrol, LPG) or disperse upwards (vapour density <1, e.g., methane, ammonia). This is critical for spill response in enclosed or semi-enclosed spaces—dense vapours may accumulate in drains, pits and basements, creating explosion or asphyxiation hazards.

Viscosity
A measure of a liquid's resistance to flow, expressed in centipoise (cP) or millipascal-seconds (mPa·s). High-viscosity liquids (heavy oils, glycols) flow slowly and may be easier to contain but harder to absorb. Low-viscosity liquids (solvents, fuels) spread rapidly and penetrate surfaces quickly, requiring faster response and higher-capacity containment.

W

WGK (Wassergefährdungsklasse / Water Hazard Class)
A German water hazard classification system widely referenced in European SDSs. WGK 1 = slightly hazardous to water; WGK 2 = hazardous to water; WGK 3 = severely hazardous to water. The WGK classification provides a practical guide to the environmental risk of a substance in the event of a spill to drains or watercourses and influences bunding and containment requirements in Germany and across the EU.

WEL
See OEL / WEL.

WRAS Approval (Water Regulations Advisory Scheme)
WRAS approval certifies that a product (valve, tank, fitting, absorbent material) meets the requirements of the Water Supply (Water Fittings) Regulations 1999 and does not contaminate drinking water. WRAS approval is required for spill containment and drainage products installed in proximity to potable water supplies, such as secondary containment systems in water treatment facilities or food manufacturing sites.

Z

Zero Liquid Discharge
An industrial water management approach that eliminates liquid waste streams leaving a facility. In spill control terms, zero liquid discharge sites require complete capture and recycling/treatment of all spill-derived liquid. Common in semiconductor manufacturing, pharmaceutical production and some food processing operations.

Zone Classification
See ATEX.

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This glossary is provided for guidance only. Always consult the relevant legislation, British Standards, and qualified advisors for compliance decisions. Contact Spill Control Products UK for expert product specification support.