The job changed. Nothing was written down.
The reassessment recorded on the phone, where the work is.
UK-built · CDM · CIS · MTD
When conditions change on site, the risk is reassessed there and then. Unibuild records it on the phone or in the office portal, against the same job as the RAMS, with photographs kept alongside.

What goes wrong when a reassessment stays in somebody’s head, and how Unibuild puts it on the record.
The reassessment recorded on the phone, where the work is.
A changed method leaves a record against the job.
One register with the RAMS, permits and toolbox talks.
Every revision signed again, in the app or by link.
The assessment made on arrival, on the phone.
Filed against the job and read in the office portal.
The clock-in shows who is on the job to brief.
Twenty questions answered on site before work starts.
Photographs kept with the assessment.
In your firm’s own app, even with no signal.
Your own questions, built in, changes included.
A dynamic risk assessment is the ongoing assessment of risks as conditions become apparent or change. It means looking at what is happening around you, checking whether the existing precautions are still enough, and deciding what action is needed.
It works alongside the written risk assessment and the RAMS. The written assessment plans the job, and the reassessment on site keeps it safe as the day unfolds. Unibuild records both against the same job, so a decision made on site becomes part of the job’s safety record.
A dynamic risk assessment is a short, deliberate pause before the work carries on. These are the questions behind it, whatever the trade.
Name the change in plain words: the weather, the ground, the access, the people nearby, the equipment, or something found that nobody expected.
Look beyond the task. Other trades, members of the public, building occupants and passing traffic may now be closer to the hazard than they were this morning.
Read the controls in the RAMS against what is in front of you. A control written for dry ground, daylight or an empty building may not hold now.
Check that the people doing the work have the training and experience for what the job has become, not only for the job as it was planned.
Remove the hazard if you can. If not, add a control that works on this site today: a barrier, a different access, a second person or a change in sequence.
If the risk cannot be brought under control, stop, make the area safe and call the supervisor. Where asbestos is suspected, HSE tells workers to stop work and check before going further.
Tell the people affected and the supervisor. Record what changed, what was decided and what was done, so the next person to arrive starts from the same picture.
A change that will last belongs in the RAMS. Revise it, brief it and have it signed again, rather than repeating the same reassessment every morning.
A static risk assessment is written in advance; a dynamic one happens during the work. Each has its own job, and Unibuild holds them all against the same project.
| Assessment | What it is | When it happens | In Unibuild |
|---|---|---|---|
| Generic risk assessment | A written assessment of a task the firm does often, wherever it is done | Written in advance and reviewed periodically | Your own templates, imported free |
| Site-specific risk assessment | The generic assessment checked and adapted for one site and its conditions | Before work starts on that site | Site and job details fill in from the project |
| RAMS | The risk assessment issued with the method statement: sequence, plant, permits, PPE and people | Before the work starts, and again when the method changes | Reviewed, approved, released and signed on the phone |
| Dynamic risk assessment | The ongoing reassessment as conditions become apparent or change | During the work, whenever something changes | On the phone or in the office portal, with photographs |
| Point of work risk assessment | A short check of the task and its surroundings, at the place of work | Immediately before the task starts | Twenty questions answered on site before work starts |
| Permit to work | Formal authorisation for a defined high-risk activity, under set conditions, for a set period | Issued before the activity and closed out after it | Raised and closed out on the phone |
Construction is one of more than thirty trades Unibuild serves, alongside electrical, mechanical, roofing, scaffolding and facilities maintenance. These are the moments a reassessment earns its keep.
An electrician finds the circuit fed from a board the drawings do not show. The isolation in the method statement no longer proves the circuit is dead.
A heating engineer arrives to change a radiator valve. Children are moving through the work area and the dog is loose.
A roofing crew is laying a membrane on a flat roof when the wind rises to the point where sheets can no longer be handled safely.
A scaffolder arrives to add a lift and finds two ties taken out by the window fitters. The scaffold no longer matches its design.
A maintenance engineer answers a call-out to water coming through an office ceiling. Staff are walking underneath, and the tiles are sodden.
An excavator driver uncovers an unmarked duct halfway along a trench. The service drawings showed nothing at that depth.
Ask where last week’s reassessments are.
Not whether they happened, because they almost certainly did. Where they are written down, with the photographs, against the job they changed.One set of safety records for the job, on the phone at the work and in the office portal.
The dynamic risk assessment opens on the phone, at the work, in the same app operatives use to clock in and sign a RAMS. Your staff app is published on the App Store and Google Play under your company’s own name and icon. Your operatives download your app, not ours.
The same assessment is live in the office portal. The contracts manager and the health and safety lead read what changed on site without waiting for paper.
The reassessment is filed with the job and the RAMS it departed from. Photographs stay with it, and a changed method leaves a record that anybody checking the job can follow.
The RAMS is revised as a new version and goes through the AI RAMS review before it is released. Everyone working to it signs again, in the app or through a signing link in any browser.
The QR clock-in shows who is on each site, so the supervisor knows exactly who needs briefing, including agency and subcontract operatives.
Dynamic risk assessments sit in one register with the RAMS, permits to work, toolbox talks and near miss reports, with the same audit trail. Records are kept for seven years, and every record exports at any time.
Unibuild is bespoke business software for UK trades and specialist contractors: a platform in daily production since 2016, shaped to the way each firm already works. Your own dynamic risk assessment questions are built in, and changes after go-live are inside the monthly fee.
Dynamic risk assessment is part of the health and safety module, with RAMS, permits, COSHH and near miss reporting. One monthly figure covers every module, with unlimited users.
The phrase grew up in the fire and rescue service. The duty behind it applies to every employer.
The Management of Health and Safety at Work Regulations 1999 require a suitable and sufficient risk assessment. Regulation 3 requires it to be reviewed when it may no longer be valid, or after a significant change.
Employers with five or more employees must record the significant findings of their risk assessment. When a reassessment changes the controls, recording it keeps that record true.
Under CDM 2015 regulation 15(2), a contractor must plan, manage and monitor its work. It must be carried out without risks to health and safety, so far as is reasonably practicable.
HSE expects employers to manage the risks before anybody works alone. A lone engineer’s reassessment on arrival is part of how those risks stay managed.
The term began in the UK fire and rescue service. HM Fire Service Inspectorate set it out in 1998, for the Home Office and the Scottish Office, in Dynamic Management of Risk at Operational Incidents. The guide explains how crews keep reassessing risk as an incident changes.
The regulations named here apply in Great Britain. Northern Ireland has its own equivalent legislation, and the same principle of reviewing an assessment when things change.
Published by Unibuild Technologies Limited · Updated . Safety references.
The product information on this page is published by Unibuild. The legal references below cover Great Britain and were checked on .
For the written side, read RAMS that hold up or use the free RAMS review checklist.
Same platform, same login. These are the modules that plan the work, record it, and hold the evidence it was done properly.
Permits, RAMS, inspections and the reports that follow an incident.
A 30-minute live demo. We set up one of your jobs and record a reassessment on the phone, then open it in the office.
All elevenSolved
Two minutes. A written figure by email, usually the same working day. Unlimited users, so everyone who records a reassessment is included.