Chemicals in industrial settings range from mild cleaning products to corrosive, flammable or toxic materials. Rules for handling them differ between countries and sometimes between regions, so this article describes common themes only. It is general information, not legal advice. Always confirm the requirements that apply at your site and follow the instructions for each product.
The usual building blocks
Chemical handling requirements around the world tend to be built from the same few pieces:
- Know what you have. Keep an up-to-date list of the chemicals on site.
- Communicate the hazards. Containers carry labels, and suppliers provide safety data documents.
- Store properly. Keep materials in suitable containers and places, separated where needed.
- Move safely. Use suitable containers, equipment and routes, and trained people.
- Protect people. Provide ventilation, protective equipment, emergency equipment and training.
- Be ready for problems. Plan for spills, leaks, fires and exposures.
The sections below take the main pieces in turn.
Keeping an inventory
A current inventory is the foundation. It lists each product, where it is kept, roughly how much is on hand and where its safety data document is found. An inventory helps with ordering, with deciding which items must be stored apart, and with giving emergency responders accurate information. Many regulations also set quantity thresholds that trigger extra duties, such as additional reporting or storage controls. Those thresholds are set locally, so check them rather than assuming.
Labeling
Containers should identify their contents and warn about hazards. Many countries follow a common system for classifying and labeling chemicals, which standardizes pictograms, signal words and hazard statements, although local adoption and details differ. A few typical points:
- Original supplier containers keep their original labels intact and legible.
- When material is moved into a secondary container, such as a bottle or day tank, that container usually needs its own label with at least the product identity and main hazards, unless it is used immediately by the person who filled it.
- Pipes and tanks may be marked with contents and flow direction under site or national marking conventions.
- Damaged, faded or missing labels should be replaced or the container taken out of use.
Labels, safety data sheets and recordkeeping are covered in more depth in a separate review of hazard communication labels.
Storage
Storage rules usually depend on the hazard class. Typical expectations include:
- Suitable containers. Use containers made of materials compatible with the contents, kept closed and in good condition. Strong acids, for example, are not stored in the same kinds of containers as solvents.
- Segregation. Incompatible materials, such as acids and bases, oxidizers and fuels, or materials that react with water, are kept apart. The safety data document usually lists incompatibilities.
- Flammables. Flammable liquids often require approved cabinets or rooms, limits on quantities in work areas, control of ignition sources and sometimes bonding and grounding when transferring.
- Secondary containment. A bund, tray or sump can hold a leak from a tank or drum so it does not spread. Requirements for size and materials vary.
- Ventilation and temperature. Some products give off vapors or degrade with heat or cold, so the storage area needs suitable conditions.
- Access and signage. Storage areas are typically marked, kept tidy, limited to trained people and stocked with emergency equipment nearby.
- Shelf life and housekeeping. Older stock is used first and expired or unwanted chemicals are disposed of through approved routes.
For bulk liquids, inspecting tanks and level measurement are separate topics, and a guide to storage tanks and tank inspection covers the equipment side.
Moving chemicals
Moving chemicals inside a facility and on public roads are treated differently.
On site, expectations often include using the right container or cart for the product, keeping lids closed, avoiding carrying heavy or awkward containers by hand, and using designated routes. Transfer between containers is a common source of splashes and spills, so approved pumps, funnels and bonding connections are typically preferred over pouring by hand. Systems of pipes, pumps and hoses used for transfers fall under chemical handling systems, which have their own design and maintenance issues.
Off site, transporting hazardous materials by road, rail, sea or air is usually governed by separate transport laws with their own packaging, marking, documentation and driver training rules. If your site ships or receives hazardous goods, find out which transport regulations apply and who needs to be trained or certified.
Protecting people
Controls are often arranged by effectiveness. Eliminating or substituting a hazardous product is considered better than relying on protective gear. After that come engineering controls, such as enclosed transfer, local exhaust ventilation or splash guards, then administrative controls like procedures and rotation of tasks, and finally personal protective equipment. Chemical protective suits and gloves must match the chemical, since no single material resists everything. The safety data document, the supplier and a qualified safety professional can advise on suitable choices.
Emergency equipment, such as eyewash stations and safety showers, is commonly required where corrosive or harmful materials are handled. These need to be reachable quickly, kept unobstructed and tested periodically according to local rules and manufacturer guidance.
Training, spills and records
Workers who handle chemicals are generally expected to be trained on the hazards of the products they use, how to read labels and safety data, how to use protective equipment, and what to do in an emergency. Training is usually given on first assignment and when new hazards are introduced, with refreshers on a schedule that varies by location.
Spill planning typically covers what is on hand to contain and absorb a leak, who is authorized to clean up which materials, when to evacuate and whom to call. Some materials should only be handled by trained responders. Plans are more useful if they are practiced.
Records that are commonly expected include the chemical inventory, current safety data documents, training records, inspection checklists, and any incident or exposure reports. Retention periods differ by jurisdiction.
A practical way to use this
Start with the inventory, read each safety data document, and list the legal references that apply to your site. Compare actual storage, labeling and transfer practices against them, then fix gaps and train people on the changes. Where a chemical is especially hazardous, or you are unsure how a rule applies, a regulator, qualified safety professional or legal adviser can help. This article cannot cover every product or jurisdiction.