PSSR Testing

Why is PSSR Testing Important?

  • It keeps your equipment safe and working properly

  • It protects your team from accidents or injury

  • It helps you stay legally compliant

  • It prevents unexpected breakdowns or fines

Do I Need PSSR Testing?

  • Fixed compressor for workshop and factory use

  • Mobile compressors including  diesel towed road compressors 

  • Air compressors

  • Steam boilers
  • 
  • Pressure vessels or tanks

What Does PSSR Testing Involve?

What We Do

1.

Written Scheme of Examination (WSE)

A document that lists what needs checking, how often, and by whom. You must have this before using the equipment.

2.

Thorough

 Examination

A qualified engineer inspects your pressure system based on the WSE—checking for damage, wear, or unsafe conditions.


3.

Testing

 & Certification

 If everything passes, you get a certificate showing your system is

safe and legally compliant.

How Often is PSSR

Testing Needed?

It depends on your equipment, but usually once a year or as recommended in your Written Scheme of Examination.

PSSR Compliance Checklist

Pressure System Safety Pre-Inspection & Compliance Guide

Reminder: You must not operate a pressure system unless it has a valid Written Scheme of Examination and has passed inspection by a competent person.

 Written Scheme of Examination (WSE)

  • WSE has been created by a competent person

  • WSE covers all relevant pressure components (vessels, pipework, protective devices)

  • WSE is available before system is used

  • WSE includes inspection frequency and methods

 Written Scheme of Examination (WSE)

  • WSE has been created by a competent person

  • WSE covers all relevant pressure components (vessels, pipework, protective devices)

  • WSE is available before system is used

  • WSE includes inspection frequency and methods
  • Pressure system operates within safe limits

  • Pressure indicators and control systems are working correctly

  • System is protected against over-pressurisation

  • Safety valves are set to the correct pressure

 Operational Checks

 Personnel & Procedures

  • Operators have been trained to use the pressure system safely

  • Emergency shut-off procedures are in place and known

  • Clear signage is displayed near pressure equipment

  • Regular checks are scheduled and followed
  • Most recent examination report is available and up-to-date

  • Maintenance logs are complete and accurate

  • Any defects found during inspection have been corrected

  • All certificates are stored and accessible (paper or digital)

 Records & Documentation