What this is
What is a compressed gas cylinder check?
What is a compressed gas cylinder check?
It is a monthly checklist covering how cylinders are stored, secured, segregated and labelled, alongside whether valve protection is fitted and test dates are current. It sits in the Pressure Systems and Refrigeration programme and is built against ISO 45001 cl.8.1.
Why does oxygen and fuel gas segregation matter this much?
Oxygen does not burn, but it turns anything nearby into fuel and makes a small ignition source burn far hotter and faster. Stored beside acetylene or propane with no separation, a minor leak or a stray spark stops being a contained fire and becomes an explosion that can take out a building.
What counts as a cylinder in scope for this check?
Any compressed gas cylinder held on site for welding, cutting, refrigeration servicing or process use, whether full, part-used or empty. Empty cylinders still hold residual pressure and are checked to the same storage and segregation standard as full ones.
Scope
When is a compressed gas cylinder check required?
This checklist covers the gas store itself — storage, segregation, cylinder condition and signage. It is not the place to record pressure vessel examinations, boiler operation or ammonia system reviews, even though all four sit in the same programme.
Use this template when
- Cylinders are held anywhere on site for welding, cutting, purging or refrigeration servicing
- A new gas store or cage is being set up, or an existing one is being decommissioned
- You are running the Pressure Systems and Refrigeration programme and this is one of its monthly steps
- A linked chemical register or hot work permit needs this record to exist
- A cylinder delivery or return changes what is held, and the register needs updating
Do not use it for
- Pressure System Written Scheme, which sets out which parts of a pressure system are examined, how, and at what interval.
- Steam System Safety Check, which checks boiler operation, water treatment, blowdown, relief devices and steam trap condition.
- Boiler Attendant Log, which records the periodic checks a boiler attendant makes through a shift, with readings and any action taken.
- Ammonia System Safety Review, which is the yearly engineering review of a refrigeration plant, not a monthly store check.
- Anything outside KnowSafe, which belongs in the workspace that owns that process
Compliance mapping
Which ISO 45001 cl.8.1 requirements does this satisfy?
The form maps to a small number of hard controls, and each one traces to a specific section rather than a general housekeeping standard.
| Clause | Requirement | Where it lands |
|---|---|---|
| ISO 45001 cl.8.1 | Operational controls for identified hazards must be established, implemented and maintained | Storage |
| ISO 45001 cl.8.1 | Controls must reflect the hierarchy of controls, favouring elimination and substitution before reliance on procedure | Storage |
| ISO 45001 cl.8.1 | Equipment condition relevant to a hazard must be verified as part of the operational control | Cylinder condition |
| ISO 45001 cl.8.1 | Warning and hazard communication measures must be maintained where a significant risk is present | Signage and response |
| ISO 45001 cl.8.1 | Nonconformities identified during operational monitoring must be recorded and progressed | Findings |
| ISO 45001 cl.8.1 | Performance against operational controls must be evaluated and reported | Result |
What it does not cover
- Segregation distance adequate, which is marked 'Yes' from habit rather than from measuring the gap between oxidising and flammable racks.
- Valve protection fitted, which gets ticked without checking that removable caps are actually on the cylinders currently in the store, not the ones that were there last month.
- Test dates current, which is confirmed without cross-checking the stamped test date against the supplier's return schedule for cylinders due for exchange.
- Cage secure against theft, which passes on a locked gate while a side panel or low fence section stays unrepaired.
- Leak response procedure known, which is answered 'Yes' by the reviewer's own knowledge rather than by asking the shift staff who would actually respond.
Global
Compressed Gas Cylinder Check requirements by country
Compressed gas storage sits under general workplace safety law almost everywhere, but the specific separation distances and cylinder handling duties come from different instruments depending on where the site operates.
OSHA 29 CFR 1910.101 and 1910.253
Federal standard for compressed gas general requirements and oxygen-fuel gas welding equipment
Cylinders must be stored, handled and inspected per the standard the manufacturer marks them to (usually a Compressed Gas Association pamphlet), and oxygen must be kept away from fuel-gas cylinders and combustible materials.
DSEAR 2002 (Dangerous Substances and Explosive Atmospheres Regulations)
Duty to assess and control risks from substances that could cause fire or explosion, including compressed and liquefied gases
The employer must identify explosive atmosphere risks from cylinder storage and apply control measures, which in practice means the segregation and ventilation checks this template scores.
ADR — European Agreement concerning the International Carriage of Dangerous Goods by Road
Governs classification, packaging, labelling and segregation of gases in transit, which carries over into how sites store cylinders awaiting collection or delivery
Sites that both store and transport cylinders need the storage segregation in this check to match the compatibility groups ADR requires for transport, or the two records contradict each other.
How to complete it
How to complete a compressed gas cylinder check, step by step
Most fields here are binary, but a handful carry judgement calls that decide whether the record actually reflects the store or just documents that someone walked past it.
Natural ventilation through permanent high and low level openings is different from a store that merely has a door left open. If the store relies on someone remembering to prop a door, mark it marginal rather than yes, because the control disappears the first cold morning someone shuts it.
Regulatory guidance gives a minimum distance or a fire-rated partition as the acceptable alternative. A rack that is 'close but not touching' does not meet either test, and the reviewer should treat visual proximity as a fail rather than round it up to marginal.
Empty cylinders staged for supplier collection still hold residual gas and are frequently the ones left outside the segregation zone because they are seen as already dealt with. They are in scope until they physically leave site.
A cylinder past its stamped test date is not a paperwork lag, it is a pressure vessel with an unverified shell. The judgement call is whether the reviewer quarantines it on the spot or only records it as a finding for later action — the form supports both, but only one actually removes the risk today.
What auditors find
Most common compressed gas cylinder check findings
The deficiencies this check surfaces most often cluster around a small number of physical conditions rather than paperwork gaps.
| Finding | Clause | What fixes it |
|---|---|---|
| Oxygen cylinders racked directly beside acetylene with no partition | ISO 45001 cl.8.1 | Relocate to separate racks at the minimum regulatory distance or install a fire-rated partition; do not accept a rope or tape line as separation. |
| Valve caps missing on cylinders not currently in use | ISO 45001 cl.8.1 | Fit protection caps before the cylinder is moved or restocked, and hold a small stock of spare caps in the store so a missing cap is never the reason one stays uncapped. |
| Cylinders stored lying down or unsecured against a wall or trolley | ISO 45001 cl.8.1 | Chain or strap cylinders upright to a fixed point individually, not as a group leaning on one chain that fails if one cylinder is removed. |
| Test date stamps illegible or past due with no quarantine tag | ISO 45001 cl.8.1 | Tag and physically separate overdue cylinders from stock in use, and confirm the supplier's exchange schedule against the register rather than the stamp alone. |
| Full and empty cylinders mixed in the same rack | ISO 45001 cl.8.1 | Mark racks 'full' and 'empty' and enforce the split at goods-in, since mixed racks cause double handling and misjudged residual pressure. |
| Warning signage present but not matched to the gases currently held | ISO 45001 cl.8.1 | Update signage whenever the gas mix on the 'gases held' field changes, and check it at every monthly cycle rather than only when the store is first set up. |
Case in point
Case in point: a segregation gap that only showed on paper
A packing site had oxygen and propane cylinders on opposite walls of the same small store, twelve feet apart on a plan that looked compliant. What the plan did not show was a support pillar running between them that the site had quietly used to hang an extension reel, effectively creating a single connected space with the pillar as a false partition.
The monthly check had marked segregation distance 'Yes' for four consecutive cycles because the reviewer measured the wall-to-wall distance rather than checking whether anything bridged it. The gap was only caught when a new area owner walked the store with the actual field help text — 'segregation distance is the whole control' — in mind, rather than treating the check as a form to complete from the doorway.
The template
The template, field by field
The form exactly as it installs. Every field, option, score and conditional rule is editable, and the links to other templates come with it.
6 sections
- Reference
- SAF-166
- Archetype
- Checklist
- Record ID
- CHK-2026-000
- Scoring
- Pass rate
- Direction
- High is good
- Singleton
- Yes
- Basis
- ISO 45001 cl.8.1
- Links
- Links Chemical register, Hot work
- Tags
- Pressure, Gases
- Sections
- 6
- Fields
- 53
- Follow up fields
- 9
- Repeating sections
- 1
- Links out
- 3
Header
12 fieldsCheck ID*
Auto sequence. Format CHK-2026-00000.
The record's own ID. Other templates point at this value.
Status*
Drives who this goes to next.
- Planned2 pts
- In progress2 pts
- Complete3 pts
- Deferred0 pts
- Open0 pts
- Closed3 pts
- Overdue0 pts
Date and Time*
Completed By*
Site*
Site ID*
Format SITE-000.
Links to FDN-001 Site ID
Area
The area within the site.
Exact Location
Drop a pin for anything hard to find.
Oxygen And Fuel Gas Together
Segregation distance is the whole control. Oxygen cylinders stored beside acetylene turn a small fire into an event that removes the building.
Storage Location*
Cylinders Present*
Gases Held*
Storage
9 fieldsCylinders Upright And Secured*
- Yes3 pts
- Some loose1 pt
- No0 pts
Valve Protection Fitted*
- Yes3 pts
- Some missing1 pt
- No0 pts
Stored Outside Or Well Ventilated*
- Yes3 pts
- Marginal1 pt
- No0 pts
Oxidising And Flammable Segregated*
- Yes3 pts
- Marginal1 pt
- No0 pts
Segregation Distance Adequate*
- Yes3 pts
- Marginal1 pt
- No0 pts
Full And Empty Separated*
- Yes3 pts
- Partly1 pt
- No0 pts
Cage Secure Against Theft*
- Yes3 pts
- Partly1 pt
- No0 pts
Away From Ignition Sources*
- Yes3 pts
- Marginal1 pt
- No0 pts
Away From Drains And Low Areas
- Yes3 pts
- Marginal1 pt
- No0 pts
Cylinder condition
6 fieldsTest Dates Current*
- All3 pts
- Some overdue1 pt
- Many overdue0 pts
No Damage Or Corrosion*
- Confirmed3 pts
- Minor1 pt
- Significant0 pts
Labels Legible*
- Yes3 pts
- Partly1 pt
- No0 pts
Valves Closed On Unused Cylinders*
- Yes3 pts
- Some open1 pt
- No0 pts
Regulators In Date And Correct*
- Yes3 pts
- Some overdue1 pt
- No0 pts
Hoses And Flashback Arrestors Fitted
- Yes3 pts
- Partly1 pt
- No0 pts
Signage and response
5 fieldsWarning Signage Displayed*
- Yes3 pts
- Partly1 pt
- No0 pts
Emergency Services Informed Of Storage
- Yes3 pts
- No0 pts
Leak Response Procedure Known*
- Yes3 pts
- Partly1 pt
- No0 pts
Cylinders In Register*
- Yes3 pts
- Partly1 pt
- No0 pts
Handling Trolley Available*
- Yes3 pts
- No0 pts
Findings
Repeats7 fieldsResult*
- Pass3 pts
- Pass with conditions2 pts
- Fail0 pts
Severity
- Minor3 pts
- Moderate1 pt
- Serious0 pts
Element Tag
Groups deficiencies by hazard type across every template.
Deficiency Detail
Photo Evidence
Fixed On The Spot
Finding ID
Raise a finding record where this needs tracking to closure.
Links to FDN-015 Finding ID
Result
14 fieldsItems Assessed*
Excludes anything marked N/A.
Items Failed*
Score Percent*
Calculated on submission. High is good. N/A items leave the denominator.
Result Band*
- Pass3 pts
- Caution1 pt
- Fail0 pts
Completeness Percent*
How much of the template was actually answered. A high score on a half completed form is not a high score.
Action Required*
Raise the action record, then enter its reference here.
- No2 pts
- Yes0 pts
Priority
- High0 pts
- Medium1 pt
- Low3 pts
CAPA ID
Format CAPA-2026-00000.
Links to FDN-014 CAPA ID
Action Owner
Next Due*
Area Owner*
Signature*
Safety Lead*
Second Signature*
SAF-166 · record IDs look like CHK-2026-000 · Links Chemical register, Hot work
Open in KnowellaRun it with agents
From a document you fill in to a programme that runs itself
The form itself is not where this slips — it is in noticing that segregation has quietly closed up between cycles and getting the right person to fix it before the next audit.
Holds the cylinder check against the site's chemical register and hot work permits, flags when segregation or test-date findings repeat month over month, and keeps the evidence trail in one place.
Tracks cylinder test dates and supplier exchange schedules alongside other statutory equipment intervals, so an overdue cylinder shows up on the same maintenance calendar as everything else due.
Rolls this check into the site's regulatory position for compressed gas storage, so a DSEAR or OSHA-facing audit can pull the segregation history rather than reconstructing it from memory.

Coordinates the crew across these workspaces, rolls completion and repeat findings into one view, and holds every write for your approval before it touches a record.
This template lives in KnowSafe — safety and compliance. Incidents, hazards, permits, inspections and the critical controls behind them.
Meet KnowSafe→Glossary
Compressed Gas Cylinder Check definitions and key terms
- Segregation distance
- The minimum separation, or fire-rated partition equivalent, required between incompatible gas classes such as oxidisers and flammables, set out in the applicable compressed gas or dangerous substances standard.
- Flashback arrestor
- A device fitted to a hose or regulator that stops a flame travelling back up the gas line into the cylinder, required on oxy-fuel welding and cutting equipment.
- Compressed Gas Association (CGA) pamphlet
- The industry reference standards, cited by OSHA and widely adopted elsewhere, that set cylinder storage, handling and testing practice by gas type.
- Statutory examination interval
- The maximum period between mandatory tests or inspections of a pressure vessel or cylinder set by regulation or the manufacturer's certification, after which the item must be re-tested or withdrawn.
- Oxidising gas
- A gas, such as oxygen, that supports and accelerates combustion of other materials without itself being flammable — the reason it must be kept clear of fuel gases and combustibles.
FAQ
Frequently asked questions about compressed gas cylinder check
What is the compressed gas cylinder check template based on?+
It is built against ISO 45001 cl.8.1, the operational controls clause of the occupational health and safety management systems standard. It also draws on the segregation and storage practice set out in national compressed gas standards such as OSHA 29 CFR 1910.101 and UK DSEAR.
What sections does the compressed gas cylinder check contain?+
There are six sections: header, storage, cylinder condition, signage and response, findings, and result. Together they hold 53 fields, 38 of which are required.
How many compressed gas cylinder check records should we have?+
This is a singleton. One live record per workspace, set up once and maintained monthly rather than recreated for each event, with other templates such as the chemical register and hot work permit referring back to it.
Which programme does the compressed gas cylinder check belong to?+
It is part of Pressure Systems and Refrigeration, alongside the pressure system written scheme, steam checks and boiler logs. The programme outcome is statutory examinations in date and a position that stands up to a regulator visit.
How is a compressed gas cylinder check scored?+
Scoring is pass rate, where high is good. The score is calculated on submission from items assessed against items failed, with items marked not applicable removed from the denominator.
Can the compressed gas cylinder check template be changed?+
Yes. Every field, option, score and conditional rule is editable, and the links to the chemical register and hot work permit come with it. Most sites install it as it is, run it for a cycle, then adjust the area list or gas options to match what they actually store.
Keep going
Related templates and programmes
Industries this is written for
Programmes this belongs to
Used together in Pressure Systems and Refrigeration
Refrigeration Contractor Verification
Verifies refrigeration contractor certification, ammonia competence, emergency capability and out of hours response
Environmental Aspects Register
Lists how your activities interact with the environment and how significant each interaction is
Refrigeration Unit Service Record
Records service and performance testing of a transport refrigeration unit, including temperature pull down and refrigerant
Boiler Operation Record
Records boiler operating parameters, water treatment results and blowdown through a shift
Refrigeration Plant Log
Records suction and discharge pressures, temperatures, oil levels and run hours across the refrigeration plant
Water Treatment Record
Records dosing, testing and results for boiler, cooling and process water systems
More in Pressure Systems
Pressure System Written Scheme
Sets out which parts of a pressure system are examined, how, and at what interval
Steam System Safety Check
Checks boiler operation, water treatment, blowdown, relief devices and steam trap condition
Boiler Attendant Log
Records the periodic checks a boiler attendant makes through a shift, with readings and any action taken
Ammonia System Safety Review
Reviews the refrigeration system against its safety requirements, covering detection, ventilation, relief, isolation, machinery room condition and emergency arrangements

Written and reviewed by
Siddarth Singh
Founder & Chief Executive Officer, Knowella
Certified Safety Professional and industrial and systems engineer with more than a decade inside food supply chain, freight and manufacturing operations. This page was written against the current text of the standards it cites, not against secondary summaries of them.
- Certified Safety Professional (CSP), Board of Certified Safety Professionals
- MBA, University of Chicago Booth School of Business
- MS and BS, The Ohio State University, Industrial and Systems Engineering
- Six Sigma Black Belt
Sources and last review. Reviewed 16 August 2026 against:
- ISO 45001:2018 cl.8.1 — Operational planning and control
- OSHA 29 CFR 1910.101 — Compressed gases (general requirements)
- OSHA 29 CFR 1910.253 — Oxygen-fuel gas welding and cutting
- DSEAR 2002 — Dangerous Substances and Explosive Atmospheres Regulations
- ADR — European Agreement concerning the International Carriage of Dangerous Goods by Road
This page is general guidance, not legal advice. Confirm requirements with your jurisdiction’s regulator.