Energy-based safety glossary

The vocabulary of energy-based safety, each term defined plainly.

Energy-Based Safety (EBS)
A hazard recognition and control approach that starts from energy, not from rules.
Energy Wheel
The visual listing the ten sources of energy present in work.
High-energy hazard
A hazard whose energy, if released, is enough to kill or cause life-altering injury.
High-energy threshold (1,500 joules)
The research-based line above which a serious injury is the most likely outcome of contact.
STKY (Stuff That Kills You)
The plain-language name for the high-energy hazards on a job.
Direct Control
A control that stops a high-energy release even when a person makes a mistake.
Alternative Control
What is required where no Direct Control is feasible: layered error-reduction measures.
The 3Ts (Timely, Tangible, Targeted)
The entry test for whether a measure counts as a control at all.
High-energy control assessment
A field assessment of whether each high-energy hazard on a task has a Direct Control.
Assessor calibration
Getting assessors to score the same control the same way, so the number means something.
SIF (serious injury or fatality)
The outcomes energy-based safety exists to prevent.
HOP (Human and Organisational Performance)
A safety philosophy built on the idea that error is normal and systems should absorb it.
Critical risk
A risk that can kill or cause permanent harm; the risks a critical risk programme names and controls.