Red Tag vs Warn vs Proceed on Unsafe Equipment Decision Tree
Why this matters
You will find equipment that is unsafe, marginal, or simply old, and you have to decide on the spot which of three things to do: take it out of service (red-tag), let it run but warn the customer in writing, or proceed normally. Pick "proceed" on a real hazard and someone gets hurt on your watch with your name on the ticket. Pick "red-tag" on every worn part and you are the tech who condemns everything and gets no callbacks. This tree sorts the three responses so the decision is about the hazard, not your mood that day.
Start here: the three responses defined
- Red-tag (condemn / take out of service): the equipment is unsafe to operate. You shut it off at the source, attach a tag or lockout, and it stays off until the hazard is corrected. This is for hazards that can hurt people.
- Warn: the equipment can run, but there is a real risk or an end-of-life condition the customer must understand. You document the condition and the customer's choice in writing.
- Proceed: normal wear or a non-safety issue. You fix what you came for and note anything worth tracking.
The hard part is putting each finding in the right bucket. Use the criteria below, not a gut feeling.
When to red-tag
Red-tag when continued operation can cause injury, fire, flooding, poisoning, or explosion. Any one of these is sufficient:
- Combustion or venting failure: evidence of incomplete combustion, a cracked or compromised heat exchanger, a blocked or disconnected vent, or any condition that can spill combustion products into living space. Suspected carbon monoxide is an immediate red-tag plus evacuation.
- Gas leak at a fitting, valve, or connector that you cannot make tight.
- Electrical: exposed energized conductors, a failed safety ground, scorched or arcing components, a panel or device that has overheated.
- Pressure or structural: a relief valve that does not function, a vessel showing bulging or heavy corrosion, a removed safety guard on moving parts.
- A defeated or bypassed safety control. If someone jumped a limit, a pressure switch, or an interlock, the equipment is unsafe by definition.
When you red-tag: shut it off at the source, lock or tag it, tell the customer face to face, and document it. Do not let "but I have no heat" talk you out of a combustion hazard.
When to warn (run with disclosure)
Warn when the equipment is safe enough to operate now but carries a real risk the customer needs to own:
- An end-of-life unit that works but is past its service life.
- A secondary safety device that is degraded while the primary still functions.
- A condition that will likely fail soon and could be disruptive, but not injurious, when it does.
- A code or installation issue that is not an active hazard but should be corrected.
A warning is only a warning if it is specific and written: what the condition is, what could happen, what to watch for, and that you recommended the fix. Verbal-only warnings vanish the moment something goes wrong.
Use the decision matrix
| Condition | Red-tag | Warn | Proceed |
|---|---|---|---|
| Can cause injury, fire, CO, flood, explosion if run | X | ||
| Defeated or bypassed safety control | X | ||
| End-of-life but currently safe | X | ||
| Degraded secondary safety, primary OK | X | ||
| Code/install issue, no active hazard | X | ||
| Normal wear, cosmetic, non-safety | X | ||
| Failure would be disruptive but not harmful | X |
If a finding lands in two columns, the leftmost (most protective) wins. You never downgrade a red-tag to a warning to keep a customer happy.
Hand-off and documentation
- Red-tag: photo of the condition, tag in place, written notice to the customer, and a note that the equipment must not be operated until repaired. Many jurisdictions require notifying the utility on a gas red-tag - know your local rule.
- Warn: written condition report, the recommended repair, and the customer's acknowledgment.
- Proceed: a line on the ticket for anything you want to track next visit.
Bank this: the bucket is set by the hazard, not the inconvenience. A condemn is a condemn even when the house goes cold.
References
- OSHA lockout/tagout and general safety standards (29 CFR 1910.147)
- NFPA 54 (fuel gas), NFPA 70 (electrical), NFPA 211 (venting) for condemn criteria
- Local authority-having-jurisdiction and utility red-tag/notification requirements
- See related: Is This Safe to Leave Running, and Lockout Before You Work