A cryogenic tank and vaporiser preventive maintenance schedule lists the checks and jobs done on the equipment at fixed intervals, how long each takes, and in what order of frequency, so problems are found before the cryogenic tank and vaporiser fails. This page gives the schedule used in the PlantOps360 task library for cryogenic tank and vaporiser (ln2, lox, lco2), which follows common industry practice for general-purpose equipment. It is also searched for as cryogenic tank, liquid nitrogen tank, LOX tank, LIN tank.
The maker’s manual and your site safety procedures always come first where they differ. Intervals set by law differ by state.
Cryogenic tank and vaporiser preventive maintenance schedule and checklist
| How often | Task | Estimated time |
|---|---|---|
| Daily | Check tank pressure, level, vacuum condition and for frost or leaks on lines | 5 min |
| Weekly | Check vaporiser frosting and pressure building coil operation; check safety valves for leakage | 15 min |
| Monthly | Check relief valves and rupture disc status; check vent line and valves | 30 min |
| Quarterly | Check emergency shutdown valves and instrumentation | 60 min |
| Annual | Inspect tank annulus vacuum (as per supplier), foundation and piping; test safety devices | 240 min |
| Annual | Supplier inspection and re-certification of relief valves and pressure gauges | 120 min |
Cryogenic tank and vaporiser maintenance frequency and yearly workload
At the estimated times, one cryogenic tank and vaporiser needs about 59 hours of preventive maintenance a year. The biggest single job is “Inspect tank annulus vacuum (as per supplier), foundation and piping; test safety devices” at 240 minutes, done annual. Multiply by the number of units you have to see the workload for your plant.
| Frequency | Tasks | Time per round | Hours per year |
|---|---|---|---|
| Daily | 1 | 5 min | 30.4 h |
| Weekly | 1 | 15 min | 13.0 h |
| Monthly | 1 | 30 min | 6.0 h |
| Quarterly | 1 | 60 min | 4.0 h |
| Annual | 2 | 360 min | 6.0 h |
What goes wrong on a cryogenic tank and vaporiser without preventive maintenance
- Loss of vacuum insulation
- Vaporiser icing and pressure-building faults
- Relief valve and rupture disc faults
- Level gauge errors
What to watch between services
- Tank pressure and level
- Vaporiser frosting
- Relief valve and disc status
Safety and statutory notes for cryogenic tank and vaporiser maintenance
Cryogenic liquids cause severe cold burns and displace oxygen. Keep oxygen monitoring and PPE in place, and use only approved procedures and fittings.
Where a cryogenic tank and vaporiser preventive maintenance schedule is used
This equipment is used in the industries below. Each link opens the preventive maintenance schedule guide for that industry, and the maintenance software page where we have one.
- Preventive maintenance schedule for engineering and fabrication shops
- Preventive maintenance schedule for electronics manufacturing plants · maintenance software for electronics
- Preventive maintenance schedule for pharmaceutical plants · maintenance software for pharmaceutical · maintenance software for api bulk drugs
- Preventive maintenance schedule for chemical, fertiliser and petrochemical plants · maintenance software for chemical
- Preventive maintenance schedule for food, dairy and beverage plants · maintenance software for food processing · maintenance software for dairy
- Preventive maintenance schedule for steel, foundry, forging and metal plants · maintenance software for steel and metals
- Preventive maintenance schedule for oil, gas and refinery facilities · maintenance software for oil and gas
- Preventive maintenance schedule for hospitals and healthcare facilities
Related equipment maintenance schedules
- Shell-and-tube heat exchanger preventive maintenance schedule
- Plate heat exchanger preventive maintenance schedule
- Air-cooled heat exchanger preventive maintenance schedule
- Pressure vessel / air receiver preventive maintenance schedule
- Atmospheric storage tank preventive maintenance schedule
Browse the full list of equipment preventive maintenance schedules (317 types).
Run this cryogenic tank and vaporiser schedule in maintenance software
In preventive maintenance software, each row above becomes a recurring task on the asset with its checklist, time estimate and parts. Tasks can be triggered by calendar date, running hours, meter readings or production cycles, each completed task is recorded with the person and date, and a failed check can open a work order. For the method behind it, read the guide to the preventive maintenance schedule, or use the free generator to get a 12-month plan for your whole equipment list.
Build my preventive maintenance schedule (free Excel)
Frequently asked questions
How often should a cryogenic tank and vaporiser be serviced?
In our schedule a cryogenic tank and vaporiser has 6 tasks: 1 daily, 1 weekly, 1 monthly, 1 quarterly, 2 annual. The biggest job is “Inspect tank annulus vacuum (as per supplier), foundation and piping; test safety devices”, which is done annual. Always follow the maker’s manual where it gives a different interval.
What is included in cryogenic tank and vaporiser preventive maintenance?
It covers routine checks and jobs such as “Check tank pressure, level, vacuum condition and for frost or leaks on lines”, “Check vaporiser frosting and pressure building coil operation; check safety valves for…”, “Check relief valves and rupture disc status; check vent line and valves”, up to the annual overhaul or inspection. The full list with times is in the table above.
How many hours of maintenance does a cryogenic tank and vaporiser need per year?
About 59 hours per unit per year at the estimated times in our library, including the daily checks done every day. Use it to plan workload, not as a benchmark.
Is there a free cryogenic tank and vaporiser maintenance checklist?
Yes. The table on this page is a ready checklist. The free preventive maintenance schedule generator turns it into a 12-month Excel schedule for your list of equipment, with monthly workload hours.