Pressure systems are found in almost every industrial sector — from steam boilers and air compressors to pressurised pipework and refrigeration plant. If your business operates such equipment, the Pressure Systems Safety Regulations 2000 (PSSR) require you to have it examined by a competent person under a Written Scheme of Examination. But what does a PSSR inspection actually cost, and how can you make sure you're getting a fair price?
What Are the Pressure Systems Safety Regulations?
The Pressure Systems Safety Regulations 2000 set out duties on owners and users of pressure systems to prevent the risk of serious injury from the sudden release of stored energy. They apply to steam systems, compressed air systems, and systems containing a relevant fluid (any liquid, vapour, or gas held under pressure).
PSSR requires duty holders to:
- Have a Written Scheme of Examination (WSE) drawn up by a competent person
- Have the pressure system examined in accordance with the WSE
- Obtain a written report from the examiner following each examination
- Take action on any defects or repairs identified
- Keep records of all examinations
The Written Scheme of Examination specifies which parts of the system must be examined, how frequently, and what the examination involves. It is not a document you can create yourself — it must be produced by a competent person with the appropriate knowledge and experience.
Types of Equipment Covered by PSSR
PSSR covers a wide range of equipment. Common examples include:
- Steam boilers and steam distribution systems
- Air receivers and compressed air systems
- Autoclave systems
- Pressurised hot water heating systems
- Refrigeration and heat pump plant
- Gas storage systems (where relevant fluids apply)
- Pressurised pipework in process industries
Not every piece of pressure equipment falls under PSSR — the regulations specify threshold pressures and volumes above which the duty applies. If you are unsure whether your equipment is in scope, a competent inspection body can advise you.
What Is Included in a PSSR Examination?
A PSSR examination carried out under the Written Scheme typically includes:
- Visual and physical inspection of the pressure system components
- Examination of safety devices (pressure relief valves, bursting discs, etc.)
- Review of operational controls and interlocks
- Check of pipework, joints, and supports for condition and corrosion
- Assessment against the examination criteria set out in the WSE
The examiner will issue a written report confirming whether the system is safe to operate, noting any defects, and specifying any required repairs or modifications. Where an immediate danger is identified, the system must be taken out of service until it is made safe.
What Affects PSSR Inspection Prices?
PSSR inspection prices in the UK vary depending on a number of factors:
1. Type and complexity of the system A simple compressed air receiver is cheaper to inspect than a large steam boiler with associated distribution pipework. Complex systems with multiple vessels, extensive pipework, and numerous safety devices require more examiner time.
2. Whether a Written Scheme of Examination is needed If you do not already have a WSE, you will need one drawn up before inspection can take place. Preparing a WSE for a new system is charged separately and can represent a significant proportion of the first-year cost.
3. System age and condition Older systems or those in poor condition may require more detailed examination, internal inspection, or non-destructive testing (NDT) methods such as ultrasonic thickness measurement. These add to the cost.
4. Inspection frequency The WSE will specify how often each part of the system must be examined — this may be anywhere from monthly safety device checks to multi-year intervals for vessels in good condition. Higher frequency means higher annual cost.
5. Site location and access Remote sites or equipment that is difficult to access (at height, confined spaces, behind process equipment) will take longer and cost more.
6. Provider National inspection bodies, specialist boiler inspectors, and regional independents all operate at different price points. Accreditation status, engineering expertise, and service levels all vary.
Indicative PSSR Inspection Costs in the UK (2025)
The following are approximate ranges to help with budgeting. Always obtain multiple quotes for your specific system.
| Equipment Type | Typical Annual Cost |
|---|---|
| Compressed air receiver (simple, single vessel) | £150 – £400 |
| Small compressed air system (multiple vessels) | £400 – £900 |
| Steam boiler (small, up to 500 kW) | £500 – £1,200 |
| Steam boiler (medium to large, 500 kW+) | £1,000 – £3,500+ |
| Refrigeration plant | £400 – £1,500 |
| Written Scheme of Examination (new, simple system) | £300 – £800 |
| Written Scheme of Examination (complex/multi-vessel) | £800 – £3,000+ |
These figures are indicative only. Your actual price will depend on the factors above, and costs can vary significantly between providers for the same scope.
Common Pricing Pitfalls to Watch For
When comparing PSSR inspection quotes, be aware of the following:
WSE not included — Some quotes cover the inspection only, assuming you already have a current Written Scheme. If yours has expired or does not exist, add this to the scope.
Separate charge for the written report — The written examination report is a legal requirement, not an optional extra. Confirm it is included.
Additional charges for defect follow-up — Check whether re-examination after a repair is included or charged separately.
Travel and subsistence — Ask whether travel costs are included, particularly for remote or offshore sites.
Minimum charges — Some providers apply a minimum visit charge, which can inflate the cost for small or simple systems.
How to Compare PSSR Inspection Prices Effectively
The most effective way to compare prices is to provide all potential providers with the same scope of information:
- Full inventory of pressure vessels and pipework (with design pressures and volumes)
- Site location and access details
- Current WSE status (does one exist, when was it last reviewed?)
- Inspection history
With this information, providers can quote on a like-for-like basis and you can make a genuine comparison. Prices quoted without this detail are likely to be imprecise.
Why Regular PSSR Examination Matters
Pressure system failures can be catastrophic. The explosion of a steam boiler or compressed air receiver can cause fatalities, serious injuries, and extensive property damage. PSSR exists because these risks are real. Beyond the human cost, a PSSR compliance failure can result in HSE enforcement action, prohibition of equipment, significant fines, and in serious cases, prosecution.
Choosing a competent examiner is not simply about meeting a legal minimum. It is about having confidence that your pressure systems have been properly assessed by someone with the expertise to identify risks before they become incidents.
Compare PSSR Inspection Prices at Compare Engineering
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This article is for general guidance only. Always consult a competent person for advice specific to your pressure system and circumstances.