Many compressors and their air receivers don’t get the proper maintenance or examination routines they legally require.

Part of the reason? The Pressure Systems Safety Regulations 2000 (PSSR 2000) isn’t a regulation many companies, health & safety managers, or consultants are familiar with – maybe because it’s “not sexy enough.”

Key Takeaways – Air Receivers and PSSR Compliance

  • If your compressor’s air receiver exceeds 250 bar litres (pressure × volume), PSSR 2000 applies and you need a Written Scheme of Examination (WSE).
  • Below 250 bar litres, PSSR may not apply – but PUWER still does, so you must keep equipment safe and maintained.
  • Proper examinations include gauge and safety valve testing, internal inspections, and checks by a competent person.
  • Visual checks alone are not enough to stay compliant or protect against over-pressurisation risks.

When Does PSSR Apply?

Under PSSR 2000, the key trigger point is 250 bar litres – calculated as pressure (in bar) multiplied by internal volume (in litres).

If your compressor’s air receiver exceeds this 250 bar litre threshold, you must have a Written Scheme of Examination (WSE) in place before the system is used.

If it’s below that threshold, PSSR doesn’t apply – but you still need to comply with the Provision and Use of Work Equipment Regulations 1998 (PUWER), which require equipment to be maintained in a safe condition.

What Does a Proper Examination Involve?

A thorough inspection of your air receiver should go well beyond a quick walk-round. A competent examination includes:

  • Removal and accuracy testing of gauges against calibrated reference meters across their full working range.
  • Removal and pressure testing of safety valves to ensure they vent (“lift”) at the correct pressure.
  • Internal examinations to check for corrosion, wear, or damage that could weaken the vessel.
  • Additional checks and observations by a competent person – including pipework, drains, and associated safety devices where relevant.

These checks are then documented within the WSE and inspection report – creating a clear record for audits, insurers, and the HSE.

Why Visual Checks Alone Aren’t Enough

We often find companies trying to do in-house checks based on visual inspections or generic checklists. That won’t cut it if you want to stay compliant and safe.

Issues like internal corrosion, safety valves lifting at the wrong pressure, or gauges reading inaccurately cannot be identified from a quick look at the outside of the vessel.

You can complete examinations in-house – but only if you have the right expertise, calibrated equipment, and a competent person who understands PSSR requirements. If not, it’s wise to get professional help.

How Velocity Safety Can Help

Our team offers full PSSR 2000 examination and Written Scheme of Examination (WSE) services – from gauge calibration and valve testing to comprehensive internal examinations.

We help you stay safe, compliant, and audit-ready by:

  • Reviewing your compressors and air receivers against the 250 bar litre threshold.
  • Arranging or advising on a compliant Written Scheme of Examination.
  • Carrying out on-site inspections, internal checks, and safety device testing.
  • Providing clear reports and certification for your records.

For expert help with your air receiver inspections or to book a Written Scheme of Examination, contact Ross at ross@velocitysafety.co.uk or call 01254 933 486.

Book a PSSR Air Receiver Examination

Unsure whether your compressors fall under PSSR – or when they were last properly examined? We can review your setup, arrange a WSE, and complete full PSSR examinations so you’re compliant and protected.

📞 Call: 01254 933 486
📩 Email: info@velocitysafety.co.uk
🌐 Or request a PSSR inspection online