Pressure Vessel Inspection Checklist, ASME VIII

0%

0 of 32 items complete

12 critical items still open - these are the highest-risk gaps.

Download checklist:

Documentation and nameplate

Nameplate is attached and legible with MAWP, MDMT, serial number, year and code stamp as applicableCRITICALManufacturer's data report is available and matches the nameplateCRITICALDesign calculations and drawings are the approved revisionMaterial test reports are on file for pressure partsCRITICALWelder and procedure qualification records are availablePrevious inspection reports and repair records are available for in-service vesselsJurisdictional registration number is current where required

Shell, heads and external condition

Shell and head surfaces are free of dents, bulges, gouges and cracksCRITICALCorrosion, pitting and coating failure are recorded with location and depthInsulation is intact and there are no signs of corrosion under insulationCRITICALThickness readings are taken at the planned thickness monitoring locationsMeasured thickness is at or above the required minimum thicknessCRITICALRemaining life and next inspection date are calculated for in-service vessels

Welds

Weld surface is free of cracks, undercut, overlap and porosity beyond code limitsCRITICALRadiography or UT records match the joint efficiency used in the designCRITICALWeld repairs are documented and re-examinedAttachment welds to pressure parts are examinedMisalignment and peaking are within code tolerancePWHT charts are available where post weld heat treatment is required

Nozzles, flanges and manways

Nozzle size, orientation and projection match the drawingFlange class, facing and gasket seating surface are correct and undamagedReinforcement pads have telltale holes open and unblockedStuds and nuts are the specified grade, fully engaged and markedManway cover and gasket are in good conditionThreaded connections are free of damage and leakageCRITICAL

Supports, internals and safety devices

Saddles, skirt or legs are sound with no cracking at the weld to shellCRITICALAnchor bolts, grout and foundation show no damageGrounding connection is in placeInternals such as baffles, demisters and trays are securePressure relief device is the correct set pressure, tagged and within its test dateCRITICALInlet and outlet piping to the relief device is unobstructed and block valves are locked openCRITICALPressure gauge and level instruments are calibrated and legible

Any failed critical item stops release or operation until an engineer reviews it. Record findings with location, size and photographs.

Inspection plans in your maintenance system

Optional: how to tie vessel inspections to equipment records.

Optional. The tool and every export work without this. No spam.

How to use the checklist

Walk the vessel with the data report and drawing. Mark each item as pass, fail or not applicable, with notes. Treat the items flagged critical as hold points. Export the finished list to PDF or Excel and attach it to the inspection record. For fabrication, this complements the code-required examinations and the final inspection by the authorized inspector.

Work from the approved drawing revision
Photograph every defect with a scale
Record locations as clock positions or station points
Do not sign for items you did not examine

Codes behind it

ASME Boiler and Pressure Vessel Code Section VIII governs design and fabrication, and its Division 1 rules cover materials, welding, examination and testing. API 510 is the in-service inspection code for pressure vessels, covering inspection intervals, thickness evaluation and repairs. Local jurisdictions may add registration and inspection rules on top, so confirm the ones that apply where the vessel operates.

Reading findings

General thinning is judged against required minimum thickness plus corrosion allowance. Localized pitting, cracks and any defect at a weld need an engineering assessment, often by fitness-for-service methods. Failed relief device checks are always urgent because they remove the last layer of overpressure protection.

Common mistakes and ERP notes

Typical gaps include missing thickness baselines, relief valves past their test date, and corrosion under insulation that is only found at shutdown. In a maintenance module such as SAP PM or Infor EAM, set recurring inspection plans by vessel and store findings against the equipment record so intervals follow actual corrosion rates.

Frequently Asked Questions

Is this checklist enough for code compliance?

No. It supports a visual and records review. Code compliance needs examinations, calculations and sign-offs by the people qualified under ASME VIII, API 510 and your jurisdiction.

How often should in-service vessels be inspected?

API 510 sets intervals based on remaining life and risk, with external visual inspections at defined maximum intervals. Your inspection plan and jurisdiction set the exact schedule.

What does MAWP mean?

Maximum allowable working pressure is the highest pressure permitted at the stated coincident temperature at the top of the vessel in its normal operating position. It appears on the nameplate.

Who should perform the inspection?

Fabrication inspections involve the manufacturer's quality staff and the authorized inspector. In-service vessels are inspected by personnel certified under a program such as API 510, as your jurisdiction requires.

Netray can help connect inspection history to your maintenance system so due dates and thickness trends are visible. The checklist itself is free and independent.

Talk to an Expert Explore More Free Tools

Related Tools

Quality & Inspection

More Quality & Inspection tools

See all

Pressure Vessel Inspection Checklist (Fabrication and In-Service)