Pressure Vessel Maintenance Checklist
Maintenance and examination support for pressure vessels: safety valve and relief device condition, corrosion and insulation checks, and the written scheme of examination regime.
Also available as editable Excel and Word — with asset, sign-off and findings columns.
What is a pressure vessel maintenance checklist?
A pressure vessel maintenance checklist is a structured list of the 12 preventive maintenance tasks — covering visual, functional, cleaning, safety and record-keeping checks — that keep a pressure vessel running safely and reliably. It groups routine checks by frequency, from daily inspections to annual servicing, so FM teams and building engineers can plan and evidence preventive maintenance.
Core pressure vessel checks
- Inspect the vessel shell externally for corrosion, distortion, and damage
- Verify the pressure gauge reads correctly and is within its calibration interval
- Drain condensate from air receivers and check the automatic drain operates
- Check safety valves and relief devices are fitted, sealed, and in date
- Confirm a current written scheme of examination exists and covers this vessel
What is a pressure vessel?
A pressure vessel is any container holding a fluid under pressure — air receivers, steam drums, calorifier shells, buffer and expansion vessels, and autoclaves. In a commercial building the most common are compressed air receivers serving controls or workshops, and vessels associated with steam and pressurised hot water systems.
Where a vessel contains a relevant fluid, it falls under the Pressure Systems Safety Regulations 2000. That brings a specific and often-missed obligation: the system must have a written scheme of examination, drawn up or certified by a competent person, specifying which parts are examined, how, and at what maximum interval. Routine maintenance does not discharge that duty and cannot substitute for it.
The practical distinction worth holding onto is between maintenance and examination. Maintenance keeps the vessel and its protective devices in good order — draining, inspecting, checking relief devices. Examination is a formal assessment under the written scheme by a competent person, producing a report. Both are needed, and a site that has one without the other has a gap.
This checklist is one of 15 in our heating maintenance checklists, covering boilers, calorifiers, heat exchangers, heat pumps and flues — combustion, controls and hot water safety checks.
Typical Pressure vessel maintenance checklist
A practical starting point for planned preventive maintenance. Always refer to the manufacturer's O&M manual and site-specific requirements.
Visual Checks
- Inspect the vessel shell externally for corrosion, distortion, and damage
- Inspect insulation and cladding, checking for corrosion under insulation at penetrations
- Inspect supports, mountings, and anti-vibration arrangements
- Check pipework connections and valves for leaks and secure fixing
Functional Checks
- Verify the pressure gauge reads correctly and is within its calibration interval
Cleaning & Housekeeping
- Drain condensate from air receivers and check the automatic drain operates
Safety Checks
- Check safety valves and relief devices are fitted, sealed, and in date
- Confirm safe operating limits are displayed and observed
Record Keeping
- Confirm a current written scheme of examination exists and covers this vessel
- Check the date of the last examination and the next date due under the scheme
- Check the nameplate is legible and matches the vessel's documentation
- Record findings and file the examination report with the plant records
Download the free Pressure vessel maintenance checklist PDF
Get all 12 tasks as a printable PDF — free, no signup needed. Keep a copy in the plant room, attach it to work orders, or share it with your maintenance contractor.
The PDF is free and needs nothing. The Excel and Word versions add asset details, sign-off and findings columns so you can record the work as you do it — we ask for an email address for those.
Typical maintenance frequency
Suggested intervals for pressure vessel maintenance. Actual frequencies should follow manufacturer guidance and site-specific risk assessments.
Weekly
- •Drain condensate from air receivers where no automatic drain is fitted
Monthly
- •Check automatic drain operation
- •Visual inspection for leaks and corrosion
- •Confirm gauge reading against expected pressure
Annually
- •Full external inspection
- •Safety valve and relief device check
- •Gauge calibration review
- •Confirm examination status against the written scheme
Common faults and issues
Issues to be aware of when maintaining pressure vessel equipment.
Safety and compliance notes
Key safety considerations for pressure vessel maintenance. This is general guidance only — always follow OEM instructions, statutory requirements, and your organisation's safe systems of work.
Reference standards and frameworks
- United Kingdom
- SFG20, CIBSE Guide M, and Gas Safe requirements for gas-fired plant
- North America
- ASHRAE/ACCA Standard 180, plus ASME CSD-1 for automatically fired boilers
- Middle East
- Dubai Municipality's Green Building Regulations require commissioning to CIBSE Commissioning Code B (boilers)
Frameworks commonly referenced when planning pressure vessel maintenance programmes. Always confirm the requirements that apply to your site and jurisdiction.
Managing Pressure vessel documentation with PM Assist
PM Assist helps FM and building operations teams search their O&M manuals and building drawings in seconds. Upload your pressure vessel documentation and ask questions like “Is there a written scheme of examination for this vessel?” or “What are the safe operating limits?” — and get source-cited answers instantly.
The checklist tells you what to check. The manual tells you the numbers.
Ask a pressure vessel manual a question and get the answer back with the page it came from. No signup, and you can drop in your own PDF instead of the sample.
“Is there a written scheme of examination for this vessel?”Runs against a sample chiller manual so you can see the shape of the answer — then try it on one of yours.
Take this checklist with you
Download the branded PDF, generate a custom version for your asset, or run AI search across all your building documentation.
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Further reading on pressure vessel maintenance
Compliance topics for pressure vessel maintenance
Compliance & CAFM
Run pressure vessel maintenance in PM Assist
This checklist is also a planned maintenance programme in PM Assist, included in every paid plan alongside the compliance register and mobile inspections.
- Add a pressure vessel to a building's asset register and this maintenance programme is created for you, with each task on its frequency in the planner.
- Pressure Systems Written Scheme Examination is tracked on the compliance register, with the date last done, the date next due and the certificate.
- Contractors can be given a login to see their jobs and upload certificates.
Frequently asked questions
Does my air receiver need a written scheme of examination?
Is routine maintenance the same as a pressure system examination?
How often must a pressure vessel be examined?
Manage your building documentation with AI
PM Assist gives FM teams instant access to O&M manuals, drawings, and maintenance knowledge — all searchable with AI.
- Upload and organise building documentation
- AI-powered search across all your manuals
- Source-cited answers for maintenance queries
- Team collaboration and access control
- No credit card required to start