COSHH and chemical storage in warehouses and trade counters

How to turn safety data into practical warehouse controls for exposure, ventilation, PPE, spills, training and emergency response.

A warehouse COSHH assessment must examine how people can actually be exposed during receipt, storage, picking, decanting, returns and spill response. Filing safety data sheets is not the assessment: the controls must reflect the substances, tasks, quantities, premises and people at the site.[1]

Scope the real work

Build the assessment from a current product and task register. HSE says to identify harmful substances from labels and safety data sheets, then consider inhalation, skin contact and swallowing; frequency and duration; employees, contractors, visitors and the public; existing controls; and further action. Include substances generated by work, such as dust, mist or gas, rather than limiting the register to purchased products.[1]

Walk each route. Receipt may involve a leaking pallet under shrink wrap. Put-away exposes drivers to racking impact and residue on packs. Picking can release powder from a split sack. A trade counter introduces members of the public and may place incompatible customer returns near sale stock. Decanting or sampling changes a closed-package store into a handling process, requiring a separate task assessment.[1]

Record normal work and credible abnormal events. The assessment should identify who stops a delivery, where a suspect load waits, how contaminated clothing is removed, and how emergency access stays clear. Cross-reference the current safety data sheet process and the product label, but translate them into site-specific actions.[1]

Apply the control hierarchy

HSE's COSHH approach starts with elimination or substitution, then process change, containment and extraction. It recommends enclosing work where possible, using closed transfer and handling systems, minimising handling, restricting access, planning storage and waste, correctly labelling containers and separating incompatible materials. Spill equipment and procedures should allow rapid, safe clean-up.[2]

For a packaged-goods warehouse, practical controls include refusing damaged inbound packs, retaining closures, using handling attachments suited to the package, protecting racking and keeping liquids below powders where leakage could contaminate them. Segregation is based on reaction hazards, not merely transport class. HSG71 is HSE's specific guidance for packaged dangerous substances at ambient temperature and pressure and covers premises, management, precautions, maintenance, training and housekeeping.[3]

A trade counter needs the same discipline at smaller scale. Keep hazardous stock beyond uncontrolled customer access where the assessment requires it; prevent browsing customers from opening packages; keep returns isolated; and ensure staff can see and protect an exclusion area. Do not use retail shelving as an overflow location for warehouse incompatibles.[3]

Ventilation and exposure control

General ventilation may be adequate for unopened packages only if the assessment demonstrates it. A task releasing dust, fume, mist, gas or vapour may require enclosure or local exhaust ventilation at the source. HSE states that LEV used as a COSHH control must be thoroughly examined and tested at least every 14 months by a competent person; some processes have shorter statutory intervals. Records and defect actions should be tied to the equipment identifier.[2]

Do not treat odour as a ventilation instrument. Specify what employees do if they detect odour, visible dust, vapour, corrosion or an alarm: stop the task, withdraw, isolate and report. Air inlets and extracts should not draw contamination through occupied areas, and temporary fans must not spread vapour into a counter, office or public route.[2]

PPE is the last line

PPE supports, rather than replaces, containment and engineering controls. HSE says employers provide, replace and pay for required PPE, and that PPE protects only the wearer while correctly worn. Selection must consider the job, protection level, fit, compatibility between items, training, cleaning, maintenance and replacement.[4]

A generic “gloves and goggles” rule is insufficient. Select glove material and breakthrough performance against the exact chemical and contact pattern. Decide whether splash goggles, a face shield, apron, suit or chemical-resistant footwear is needed for each task. Respiratory protective equipment requires task-specific selection, face-fit arrangements where relevant, training and maintenance. Store clean PPE away from chemicals and replace contaminated or degraded items under a defined rule.[4]

Spill kits and waste

Locate kits where a trained person can reach them without crossing the release. Contents should follow the compatibility assessment: drain covers, overpack, tools and absorbent suitable for the product, waste labels and means to establish an exclusion zone. One universal absorbent is not automatically safe for oxidisers, acids, alkalis and solvents. The chemical spill response plan should define which releases employees may handle and which require evacuation and specialists.[3]

Plan the waste route before a spill. Contaminated absorbent can retain corrosive, toxic, flammable or oxidising properties and must not be combined merely to reduce the number of drums. Label and quarantine it, keep incompatible wastes apart, and arrange characterisation and lawful disposal.[3]

Emergency arrangements, training and review

HSE says emergency planning should cover the likely type of accident, warning and communication systems, first-aid and rescue procedures, and practices at regular intervals. Information must be readily available, including work hazards, identity and location of substances, and emergency procedures. Employers should involve safety representatives and employees when planning.[5]

Post concise actions at the point of work and maintain an emergency pack for responders: site plan, drains, isolation points, hazard groups, quantities and contacts. Train all staff to raise the alarm; reserve spill intervention for people trained and equipped for the assessed scenario. Practise during realistic staffing, including lone work and counter opening hours.[4]

Review after a spill, near miss, product change, layout alteration or control failure, and at a planned interval. Check that SDS revisions reached the assessment, actions closed, ventilation examinations remain current, kits are complete and PPE is within service condition.[4]

Key takeaways

Sources and review

Reviewed on . Next review due .

  1. How to carry out a COSHH risk assessment - Health and Safety Executive
  2. Controlling exposure to hazardous substances - Health and Safety Executive
  3. Chemical warehousing: the storage of packaged dangerous substances (HSG71) - Health and Safety Executive
  4. COSHH basics: personal protective equipment - Health and Safety Executive
  5. Emergencies: be prepared - Health and Safety Executive