Free checklist
Gas detection system annual maintenance checklist
The annual gas detection system service is the deep pass: the measurements, cleanings and tests a quarterly round doesn't reach. This checklist keeps the full service on record with the photos that make it defensible later. Work is commonly verified against IMC (mechanical code), the applicable building code, manufacturer's published instructions. Confirm the edition your authority having jurisdiction has adopted.
- Items
- 4
- Photos required
- 6
- Built for
- Subcontractors
Who runs it
The controls service lead inspects and documents; the licensed tech performs and certifies the bump test and calibration.
When in the schedule
Once a year, timed with the calibration visit so the whole detection-to-ventilation chain is proven end to end while the tech is on site.
The checklist
Every item, and the photo that proves it
The photo count on each row is what RTI would require before the item can be submitted. Copy the list as is, or load it into RTI and let the gate enforce it.
Sensor inventory and condition
- 2 photos
Every sensor accounted for and matched to the panel and area served
Field head count matches the controller, each zone still covers the space it serves, remodeled areas checked for gaps in coverage.
- 1 photo
Heads cleaned and inspected
Grease, dust and moisture cleared from each head per the manufacturer, cell housings intact, no corrosion at terminals.
Calibration support
- 1 photo
Bump test and calibration by the tech observed and logged
Test gas applied by the certified tech, response and setpoints recorded, sensors reading zero on clean air after calibration.
Full interlock verification
- 2 photos
Alarm-to-ventilation sequence proven for each zone
Each detection zone driven to alarm confirms its exhaust fan, dampers, alarms and any shutoff respond, then returns to normal.
What usually sends this back
The failures are almost always the evidence, not the work
- Sensors bump-tested but the interlocked exhaust and damper response never re-verified after a controls change.
- Sensor count on the panel no longer matches the field after a remodel added parking or kitchen area with no coverage.
Run it with the Photo Gate
A checklist nobody can submit half-finished
Load this list into RTI, stick a QR tag on the area it covers, and the submit button stays locked until every mandatory item is answered and the 6 required photos exist. Approved walks roll into a branded turnover package with a tamper-evident record behind every line.
Submission state
The gate is enforced on the server, so it holds even if the phone is offline when the walk happens.
Verified against
Common questions
- What does this gas detection system annual checklist cover?
- 4 items across 3 sections, covering sensor inventory and condition, calibration support, full interlock verification. Each item spells out what the person walking the job is actually looking for, not just a box to tick.
- Who should run this inspection?
- The controls service lead inspects and documents; the licensed tech performs and certifies the bump test and calibration.
- When in the schedule should this walk happen?
- Once a year, timed with the calibration visit so the whole detection-to-ventilation chain is proven end to end while the tech is on site.
- Why does every item ask for a photo?
- 6 of the 4 items call for photo evidence. A checklist answer without the photo is a claim; the photo is what makes the record worth something in a dispute and lets a reviewer approve work without re-walking the job.
- What most often fails a gas detection system annual inspection?
- Sensors bump-tested but the interlocked exhaust and damper response never re-verified after a controls change. Sensor count on the panel no longer matches the field after a remodel added parking or kitchen area with no coverage.
- Can I use this checklist in RTI?
- Yes. Start a free RTI workspace, build this list as a checklist, and the Photo Gate holds the submit button until every mandatory item is answered and its photos are attached. Approved inspections roll into a branded turnover package with a tamper-evident audit trail.
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