User requirement specification
Chemical filling machine user requirement specification guide.
Create a controlled, testable brief that follows the chemical filling project from enquiry through design, acceptance and change.
- Written for chemical filling projects
- Qualitative guidance where project data is not verified
- Requirements should be confirmed by trial and site review
Purpose of the URS
State the required outcome, operating envelope and evidence.
A user requirement specification should describe what the production process needs the filling equipment to achieve, the conditions under which it must do so and how each requirement will be verified. It should not hide unknowns or force an unsupported machine solution before the application has been reviewed.
For chemical filling, the URS should connect formulation and SDS information, wetted-part approval, pack samples, site safety interfaces, cleaning, controls, quantity checks and finished-pack quality. Requirements that depend on a product trial or competent site assessment should say so explicitly.
Write requirements that can be answered
Give each requirement an identifier, priority, owner and verification route. Ask suppliers to state compliance, assumptions, exclusions and evidence required.
URS structure
Sections to include in a chemical filling requirement.
| Section | Content to define | Typical verification |
|---|---|---|
| Business and production objective | Products, pack families, shifts, batch pattern, required good output and growth assumptions | Approved project brief and capacity calculation |
| Product operating envelope | Exact identities, concentration, density, viscosity, temperature, foam, solids, vapour and cleaning fluids | Data review, compatibility approval and representative trial |
| Container and closure matrix | Dimensions, tolerances, neck, handle, stability, fill range, closure, liner, label and code | Approved drawings or samples and format trial |
| Materials and cleaning | Full contact path, drainage, retained volume, flushing, dismantling, waste and inspection | Materials schedule, design review and witnessed changeover |
| Safety and site interfaces | Utilities, bulk supply, containment, extraction, DSEAR information, guarding, access and emergency response | Site documents, design review, inspection and commissioning |
| Controls and data | Recipes, access levels, alarms, permissives, reject logic, counts, batch data and backups | Functional test, challenge test and document review |
| Acceptance and handover | Trial, FAT, SAT, training, documents, spares, open actions and production release | Approved protocols, signed records and close-out register |
Testable wording
Avoid requirements that cannot be objectively accepted.
| Weak statement | More useful requirement approach |
|---|---|
| “Machine must be accurate.” | Define the net measure, product condition, fill targets, sample sequence, reference equipment, tolerance and action for a result outside criteria. |
| “Suitable for chemicals.” | List the approved formulations and cleaning fluids, operating temperatures and the exact component schedule requiring compatibility approval. |
| “High speed.” | Define good finished packs over an agreed period, including normal operator tasks, replenishment and connected machinery. |
| “Easy to clean.” | State which products change, permitted residues, dismantling limits, rinse or flush route, waste handling and first acceptable pack check. |
| “ATEX compliant.” | Provide the site’s DSEAR and area-classification inputs, define equipment boundaries and state the required equipment and documentation evidence. |
Safety information
Use the SDS as an input, not as the complete assessment.
HSE states that a safety data sheet provides information that helps an employer make a risk assessment, but the SDS is not itself the assessment. Review current HSE safety data sheet guidance and HSE DSEAR guidance where relevant, with competent site-specific advice.
Buyer questions
Questions about chemical filling machine user requirement specification guide.
Is a URS only needed for a fully automatic line?
No. A concise URS can improve semi-automatic and standalone-machine projects by fixing the approved product, pack, cleaning, site and acceptance assumptions.
Should the URS name a specific pump or filler?
Only when that technology is a justified requirement. Otherwise describe the product behaviour and required outcome, then require the supplier to explain and prove the proposed method.
Who should approve the URS?
Approval normally needs input from the functions that own production, engineering, quality, safety, maintenance and procurement requirements. The exact governance depends on the organisation.
Can the URS change after order?
Yes, but changes should be controlled. Record the reason, technical and commercial impact, evidence required and approval before the modified requirement is released.
What should be attached to the URS?
Attach current product and SDS information, pack drawings or samples, process flow, layout, utilities, existing equipment interfaces and any approved test or quality methods.
Speak to Lancing
Turn the guidance into a project-specific requirement.
Send the product, pack, output, site and evidence available. Lancing can review the machinery route and identify items that need samples, trials or specialist site input.