An inspection gets pushed back because the schedule is tight. A service visit is cancelled and never rebooked. A maintenance task slips into the next reporting period, then the one after. Nothing happens, so nobody notices, and the gap sits there until an audit, an incident or a failed test finds it.
We’ve seen any overdue inspections that left a lot of issues unnoticed.
How to spot it: Review overdue inspections, services and maintenance tasks. What was deferred, and has it been recovered?
Built from good intentions. Maintained through necessity. Understood by nobody.
After years of repairs, upgrades and workarounds, a system can end up very different from the one that was designed and approved. Documentation falls behind. The person who knew why a modification was made has retired or moved on. When somebody has to demonstrate the system is still compliant, the paperwork describes something that is no longer installed.
How to spot it: Ask whether your documentation accurately reflects what's actually installed. If nobody can say for certain, you may have one.
Every site has one.
The pump, valve or control panel that should have been replaced years ago but somehow keeps going. Spares are harder to find, call-outs are more frequent, and every budget round it slips a little further down the list. Zombie equipment stays alive right up until the moment it doesn't.
How to spot it: Look for ageing assets that need increasing maintenance or repeated intervention to stay operational.
An alarm trips once a month, then clears. A detector reads oddly in wet weather. An engineer attends, finds nothing and closes the job. With nothing to reproduce, it's easy to decide there's nothing to fix, but an intermittent fault can be the first sign of a failing connection, water ingress or a degrading sensor.
If nothing else, a faulty sensor brings its own problems. You know the boy who cried ‘wolf’, but we’ve seen the gas detector that cried ‘toxic gas’.
How to spot it: Treat repeat reports as data, even when no single one proves anything.
Energy vampires consume power, compressed air, water or other resources while delivering nothing useful. The cost shows up on the utility bill, but a compressor running flat out around the clock also wears faster and fails sooner. A small air or water leak is often the first sign of a worn seal or a corroding fitting. And unexplained consumption can be masking a fault nobody has thought to look for.
How to spot it: Compare what your systems consume with what operations actually need, and investigate the difference.
Cut off one head, and two more appear.
A failed component is replaced, then replaced again six months later. A leak is fixed and another appears further down the line. Each repair feels productive, but unless someone asks why it failed, the cause is still there.
How to spot it: Look for recurring defects, repeat failures, or fixes that seem to create new problems elsewhere.
The issues that do the most damage are usually the ones everyone has stopped noticing: the inspection that's always postponed, the modification nobody documented, the ageing asset that gets another year's grace.
Which of these monsters might be hiding in your organisation?
