COSHH inventories must include substances created by the work

Build the inventory from work as performed

The direct answer is that the assessment population should start with tasks and processes, not only procurement records. For each activity, preserve the site, area, equipment, material inputs, operating conditions, temperature and pressure where relevant, quantities, duration and frequency, workers and others potentially exposed, maintenance and upset states, and substances intentionally used or predictably generated. Cutting, grinding, welding, mixing, spraying, cleaning, biological work, combustion, decomposition, and waste handling can create exposure agents that never appear as a purchased container.

Name each agent at the useful level of specificity and record its form, source task, route and potential pattern of exposure, available safety and technical information, uncertainty, and competent reviewer. A trade name or broad label such as dust or fume may be too coarse for control selection, while a guessed constituent can overstate what is known. Unknown composition, intermittent generation, and non-routine work should remain explicit evidence gaps until appropriate investigation resolves them.

Keep assessment scope tied to effective controls

For each task-agent combination, retain the assessment method and version, evidence and measurements used, people and locations in scope, assumptions, exposure limit or other criterion where applicable, existing controls, residual uncertainty, required action, responsible owner, approval, and review trigger. The inventory is an input to judgment, not a compliance verdict. Qualified occupational-hygiene, safety, medical, engineering, operational, and legal roles should determine the assessment and controls required for the actual workplace.

Control records should identify the hierarchy choice, engineering or process control, operating procedure, containment or ventilation state, maintenance and examination schedule, training, personal protective equipment where used, monitoring, health surveillance where appropriate, emergency arrangements, and proof that the control remains effective. A checked inventory row, accessible safety data sheet, or completed training task does not show that work-created exposure is prevented or adequately controlled.

Respect regulatory boundaries and changed conditions

HSE's overview flags separate regimes for lead, asbestos, and radioactive substances. Classification logic should retain which legal framework and competent owner applies rather than forcing every agent into one generic COSHH record. Other obligations may also interact with environmental, fire, product, transport, waste, food, biological, medical, or local requirements. A system can route evidence and tasks; it should not choose the controlling law from a keyword alone.

Changes to raw materials, suppliers, formulation, equipment, ventilation, production rate, temperature, cleaning method, maintenance, layout, staffing, work duration, or incident history can change the exposure picture. Preserve former and new task versions, affected assessments, interim precautions, validation, authorization to resume, communication, and effective dates. Historical records should show the conditions that actually governed them rather than re-rendering old work under the current inventory.

Walk down normal, maintenance, and upset work

A representative evaluation should select one process that uses a supplied product and creates dust or fume. Observe normal production, cleaning, maintenance, startup, shutdown, a blocked-extraction condition, and waste handling; then compare the observed agents with purchasing, safety-data, task, assessment, control, training, monitoring, and emergency records. Reviewers should find missing agents, distinguish unknown from absent, trace each control to a scoped assessment, and retain decisions and follow-up evidence.

HSE's official overview supports the attributed statements about substances used or created by work, example forms, the COSHH control sequence, and separately regulated lead, asbestos, and radioactive substances. It does not establish the hazards, exposures, controls, surveillance, competence, legal duties, or compliance of any workplace. EHS Signal does not independently assess a site, and this analysis is not occupational-hygiene, medical, safety, regulatory, or legal advice.

Enterprise buyer test

Translate this change into the exact population, record type, workflow stage, decision owner, effective date, and evidence that could be affected. Ask current or prospective providers to demonstrate the named workflow with representative data and an exception—not a polished feature tour. Record what official documentation establishes, what a provider states, what the team observes, and what remains unresolved.

A defensible review also identifies the dependency outside the product. Authority interpretation, policy configuration, data quality, integrations, human judgment, approval rights, release governance, training, and retained evidence may remain customer or service responsibilities. The evaluation should preserve those boundaries instead of treating a technology claim as the complete operating model.

What we will watch next

Safety Operations Standard will watch the named source and affected market records for later evidence that changes status, scope, availability, implementation timing, workflow consequence, or the limits of the initial report. A later announcement does not silently overwrite this dated account; the change ledger preserves the sequence.