The Short Answer
A RAMS (Risk Assessment and Method Statement) describes how to do work safely. A permit to work confirms that conditions are safe for work to start right now. They serve different purposes, and for high-risk activities, you typically need both.
Think of it this way: your RAMS is the safety plan. The permit is the on-the-day authorisation that says the plan can actually be executed because conditions have been checked and verified.
RAMS Explained
A RAMS document combines two things:
- Risk assessment — Identifies hazards, evaluates who could be harmed, and rates the level of risk
- Method statement — Describes the step-by-step safe system of work, including sequence, equipment, PPE, and emergency procedures
RAMS are typically prepared days or weeks before work begins. They're reviewed, approved, and used to brief workers on how the job should be done safely. A RAMS is a planning document.
Key Characteristics of RAMS
- Prepared in advance, often as part of tender or pre-start process
- Covers the entire scope of a work activity
- Valid for the duration of the activity (unless conditions change)
- Written by the contractor carrying out the work
- Describes general controls and procedures
- Required for virtually all construction activities by principal contractors
Permit to Work Explained
A permit to work is a formal, time-limited authorisation for specific high-risk work to proceed. It confirms that the safety precautions described in the RAMS (and any additional site-specific controls) are actually in place at that moment.
Key Characteristics of Permits
- Issued on the day of work, at the work location
- Time-limited (typically a single shift or shorter)
- Location-specific — covers a defined area
- Issued by an authorised person (usually site management)
- Requires physical verification of conditions
- Only required for specific high-risk activities
Side-by-Side Comparison
| Feature | RAMS | Permit to Work |
|---|---|---|
| Purpose | Plan how to do work safely | Authorise work to proceed now |
| When prepared | Days/weeks before work | On the day, before work starts |
| Duration | Life of the activity | Hours or a single shift |
| Who writes it | Contractor doing the work | Site management / permit issuer |
| Scope | General methodology | Specific time, place, and conditions |
| When required | All construction work (in practice) | High-risk activities only |
| Condition check | Based on expected conditions | Based on verified current conditions |
When Do You Need Both?
You need both a RAMS and a permit to work whenever the activity involves:
- Hot work — Welding, cutting, grinding, or any process producing sparks or flame
- Confined space entry — Manholes, tanks, chambers, excavations deeper than 1.2m
- Electrical work — Working on or near live conductors, isolation and lock-off
- Work on pressurised systems — Steam, gas, hydraulic, or pneumatic systems
- Excavations near buried services — Digging within 500mm of known services
- Crane lifts near overhead lines — Mobile crane operations within exclusion zones
- Roof work on fragile surfaces — Where additional authorisation controls are needed
- Breaking containment — Opening systems that may contain hazardous substances
When Is a RAMS Alone Sufficient?
For the majority of construction activities, a well-prepared RAMS is sufficient without a formal permit. Examples include:
- General carpentry and joinery
- Painting and decorating (unless in confined spaces)
- Bricklaying and blockwork
- Installing plasterboard and dry lining
- Landscaping and external works
- Installing mechanical or electrical services (non-live)
- General demolition of non-structural elements
However, even for these activities, if the principal contractor's site rules require a permit for certain areas or situations, you must comply.
How They Work Together in Practice
Here's a real-world example showing how RAMS and permits interact for a hot work activity:
- Week before: Contractor submits hot work RAMS to the principal contractor for review. It describes the cutting methodology, PPE requirements, fire prevention measures, and emergency procedures.
- RAMS approved: The principal contractor reviews and approves the RAMS, possibly with comments or additional requirements.
- Morning of work: The contractor's supervisor requests a hot work permit from the site manager.
- Site inspection: The permit issuer visits the work area to verify that combustibles have been removed, fire extinguishers are in place, smoke detection has been managed, and all RAMS controls are implemented.
- Permit issued: Both parties sign the permit, confirming that conditions match the RAMS and work can proceed safely for the defined time period.
- Work proceeds: Work is carried out in accordance with both the RAMS methodology and the permit conditions.
- Permit closed: After work (and any fire watch period), the permit is formally closed and signed off.
What Happens Without Both Documents?
The consequences of missing documentation depend on the situation:
- No RAMS, no permit: Work should not proceed. HSE can issue prohibition notices, and you face potential prosecution under CDM 2015 and the Health and Safety at Work Act 1974.
- RAMS but no permit: For high-risk work, this means conditions haven't been independently verified. If something goes wrong, you'll struggle to demonstrate due diligence.
- Permit but no RAMS: The permit issuer has no detailed methodology to verify against. The permit becomes a rubber stamp rather than a meaningful check.
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