Pressure vessel inspection checklist (unfired)
A pressure vessel inspection checklist is used by engineers and boiler inspectors to help ensure that pressure vessels are safe to hold liquids and gases under pressure. it can be used to conduct external and internal inspection of pressure vessels, as well as inspect safety devices and piping systems.
What does this form include?
This form contains 11 sections:
External Inspection
- External coverings such as insulation and corrosion resistant coatings are in good condition?
- No leakage of gas, vapor, or liquid?
- Pressure vessel mountings have adequate allowance for expansion and contraction?
- Free of cracks, deformations, or other defects on vessel connections (Manholes, reinforcing plates, nozzles, or other connections)?
- Free of corrosion or defects on bolts and nuts?
- No distortion found on accessible flange faces?
- No erosion or dents found on surfaces of the vessel?
- Free of distortion?
- Free of cuts or gouges?
- Surfaces of shells and heads is free of cracks, blisters, bulges, and other evidence of deterioration? Same with skirt and the support attachment and knuckle regions of the heads?
- No cracks or other defects on welded joints and the adjacent heat affected zones?
Internal inspection may be required only if the ultrasonic wall thickness data indicate that there is
Internal Inspection
- Adequate number of threads are engaged on threaded connections?
- All openings leading to any external fittings or controls are free from obstructions?
- Special closures are adequate?
- No cracks at areas of high stress concentration?
- Vessel internals have no deterioration that might constitute a hazard?
- Free of corrosion?
The following steps should be performed for each safety device:
Safety Devices
- IMPORTANT: The set pressure is not higher than the maximum allowable working pressure (MAWP) marked on the pressure retaining item?
- If multiple devices are provided, the difference between set pressure does not exceed that permitted by the original code of construction?
Verify the nameplate capacity and, if possible, compare it to the system capacity requirements.
Rupture Disks:
Piping Systems
- Is there provision for expansion?
- Is there provision for adequate support?
- No evidence of leakage?
- Is there proper alinement of connections?
- Proper rating for the service conditions?
- No evidence of corrosion, erosion, or cracking or other detrimental conditions?
Pressure Gages - pressure indicated by the required gage should be compared with other gages on the s
Comments
Inspector Name and Signature
Use this template