The HSE and The Storage Equipment Manufacturers’ Association (SEMA) advise looking at the following areas to uncover potential problems. You must make sure that transfers into and from tankers only take place in bunded areas designed to contain a worst case spillage. You must have emergency storage for leaking vehicles to minimise any acute incidents caused by a seal on a tanker failing.

Wherever practicable you should store all other wastes under cover. Covered areas must have good ventilation. This applies to any such container: You must direct overflow pipes to a contained drainage system (for example the relevant secondary containment) or to another vessel where suitable control measures are in place. make sure you take special care so that a coupling is able to withstand the maximum shut valve pressure of the transfer pump

See also

HSG191: Emergency planning for major accidents: Control of Major Accident Hazards Regulations 1999 (COMAH) All stored containers must keep the labelling they had at acceptance. If the label is damaged or no longer legible you should replace the label with that same information. The most trusted BIM Library in the UK, certified to the internationally-recognised NBS BIM Object Standard

HSG251: Fumigation: Health and safety guidance for employers and technicians carrying out fumigation operations HSG158: Flame arresters: Preventing the spread of fires and explosions in equipment that contains flammable gases and vapours You should store aluminium canisters separately from steel canisters (especially rusting canisters). This will: You must manage waste in a way that prevents pests or vermin. You must have specific measures and procedures in place to deal with wastes that are identified as causing pests or vermin. You must not carry out activities that represent a clear fire risk within any storage area. Examples include:

What could have caused the error?

HSG244: Remotely operated shutoff valves (ROSOVs) for emergency isolation of hazardous substances: Guidance on good practice You must provide suitable containment measures (for example drip trays) for aerosol canisters held in containers which cannot collect and hold free liquids released from the canisters. Or you should transfer them to secure containers that are able to hold free liquid.