A single failed-open steam trap can waste enough steam in a week to cover a small workshop's power bill for a month — and most stations only find out during the annual survey, months after it happened. A weekly steam trap survey catches that loss early. Here is what a proper round covers, method by method, so nothing gets logged as "checked" when it was really just glanced at.
The Cost Of A Missed Trap
Industry surveys consistently find that five to fifteen percent of traps in an unmanaged system are failed open at any time, each one bleeding live steam continuously until someone notices. A weekly walk-down is the cheapest fix in the plant.
Three Ways To Test A Trap
No single method catches every failure mode. A proper survey rotates between all three.
Ultrasonic
Listens for the flow noise of a trap cycling correctly versus the continuous rush of one stuck open. Fastest method on live lines.
Infrared
Compares upstream and downstream surface temperature. A trap stuck cold is blocked; one with no temperature drop is stuck open.
Mechanical / Visual
Checks the trap body for leaks, corrosion, and physical damage that neither sound nor heat readings will show.
How To Classify What You Find
Good
Cycles normally, correct temperature drop, no visible leaks. No action needed.
Leaking
Partial steam loss detected. Schedule for repair within the next maintenance window.
Failed
Stuck open or blocked. Flag for immediate replacement or isolation.
Weekly Survey Schedule
| Trap Group |
Method |
Frequency |
| High-pressure mains |
Ultrasonic + IR |
Weekly |
| Process condensate |
Ultrasonic |
Weekly |
| Low-pressure / heating |
IR + visual |
Fortnightly |
| Full system audit |
All three methods |
Annually |
Spreadsheet trap logs tend to lose trap history the moment someone leaves the team. Stations that sign up for Oxmaint tag every trap by ID, attach its full test history, and get failed traps routed straight into a work order — or book a demo to see a live trap survey walkthrough on the platform.
Q
Do all traps really need checking every week?
Not always at the same interval. High-pressure and critical process traps justify weekly checks because a failure there is costly fast; low-pressure heating traps can often move to a fortnightly or monthly rhythm without meaningful risk.
Q
Can one technician cover ultrasonic, IR, and visual in a single round?
Yes, most surveyors carry a combined ultrasonic and IR unit and log the visual check alongside it, so one pass through the route covers all three methods for each trap.
Q
What happens to a trap flagged as failed?
It should generate a work order the same day it's flagged, not wait for the next planning meeting. The longer a failed-open trap runs, the more steam and money it costs.
Never Lose Track Of A Steam Trap Again
Every trap ID, test method, and condition logged on your route, with failed traps turned into work orders before the shift ends. Sign up for a free trial to map your first trap route, or book a demo to see the survey workflow live.
