# Site Safety vocabulary — C2

https://hienglishquiz.com/vocabulary/construction-and-architecture-3-c2

- Title: Site Safety Expert
- CEFR: C2 (Proficient)
- Theme: Professional & Specialized
- Words: 22

How safety managers measure and argue about risk: leading and lagging indicators, ALARP, and the safety culture that decides whether the rules are followed…

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## Word list

* **total recordable incident rate**: A figure showing how many workplace accidents needing more than first aid happened for each fixed number of hours worked. — “Our **total recordable incident rate** fell by half this year.”
* **leading indicator**: A measure, such as the number of safety checks done, that shows the risk of accidents before any harm happens. — “The number of toolbox talks held is a useful **leading indicator**.”
* **lagging indicator**: A measure, such as the number of injuries last year, that shows safety results only after harm has already happened. — “Injury counts are a **lagging indicator**; they report the past.”
* **fall factor**: The ratio between the distance a person drops and the length of rope available to absorb the shock, showing how violent the stop will be. — “Anchoring above your head keeps the **fall factor** low.”
* **suspension trauma**: A dangerous condition in which a person hanging motionless in a harness after a fall can lose consciousness because blood pools in the legs. — “Quick rescue is vital to prevent **suspension trauma** after a fall.”
* **zero energy state**: The condition of a machine when all its electrical, hydraulic and stored power sources are removed, so it cannot move. — “Verify a **zero energy state** before putting your hands inside.”
* **safe isolation**: The process of switching off and disconnecting a power, gas or liquid supply, then proving it is dead, before work on the connected equipment starts. — “The electrician proved **safe isolation** with a tester before touching the cable.”
* **line of fire**: The path along which a moving or falling object, load or machine part could strike a worker. — “Keep your body out of the **line of fire** when the crane swings.”
* **dropped object**: A tool or item that falls from a height and could injure people below. — “A single **dropped object** from a platform can kill a person below.”
* **engulfment**: Being covered or trapped by loose material, such as grain, sand or liquid, that can suffocate a person in a tank or trench. — “Rescuers pulled him out just before **engulfment** in the silo.”
* **atmospheric testing**: Measuring the air in a tank or similar space for oxygen, harmful gas and fire risk before anyone enters. — “Entry is forbidden until **atmospheric testing** shows the air is safe.”
* **arc flash**: A sudden, violent burst of heat and light from an electrical fault that can seriously burn anyone close by. — “Special clothing protects electricians from **arc flash** burns.”
* **ALARP**: The standard that a risk must be cut as far as is sensible, considering what the cost and effort would be. — “The design team had to show the remaining risk was **ALARP**.”
* **occupational exposure limit**: The highest amount of a harmful substance or noise that a worker may be around during a work shift without likely harm. — “Dust levels on site were well below the **occupational exposure limit**.”
* **respirable silica**: Very fine dust from cutting concrete or stone that goes deep into the lungs and can cause serious, lasting disease. — “Wet-cutting reduces the **respirable silica** in the air.”
* **hand-arm vibration**: Shaking from tools such as jackhammers that, after long use, can damage nerves and blood vessels in the fingers. — “Rotating drillers between tasks reduces the risk of **hand-arm vibration**.”
* **dynamic risk assessment**: A quick, on-the-spot judgment of dangers made during the job, when conditions change in ways nobody planned. — “When the wind rose, the crew made a **dynamic risk assessment** and paused the lift.”
* **simultaneous operations**: Different jobs happening close together on one site, where one crew's work could endanger another's. — “Welding above a pipe-laying crew is a classic **simultaneous operations** risk.”
* **competent person**: Someone with enough training, skill and experience to spot dangers and decide the safe way of doing a specific job. — “Only a **competent person** may inspect and approve the scaffold.”
* **safety-critical task**: A job in which a mistake or failure could directly lead to death or serious injury. — “Working while tired is banned for any **safety-critical task**, such as signalling a crane.”
* **safety culture**: The shared attitudes and habits of everyone in a workplace toward danger and care, seen in what people do when nobody is watching. — “A strong **safety culture** means people speak up when something looks wrong.”
* **bow-tie analysis**: A diagram method that shows a danger in the centre, the causes and their preventive barriers on one side, and the results and recovery measures on the other. — “The team drew a **bow-tie analysis** for the crane lift.”

## Other levels

- [Site Safety · B1](https://hienglishquiz.com/vocabulary/construction-and-architecture-3-b1) — markdown: https://hienglishquiz.com/vocabulary/construction-and-architecture-3-b1.md
- [Site Safety · B2](https://hienglishquiz.com/vocabulary/construction-and-architecture-3-b2) — markdown: https://hienglishquiz.com/vocabulary/construction-and-architecture-3-b2.md
- [Site Safety · C1](https://hienglishquiz.com/vocabulary/construction-and-architecture-3-c1) — markdown: https://hienglishquiz.com/vocabulary/construction-and-architecture-3-c1.md

## More Professional & Specialized vocabulary — C2

- [Supply Chain](https://hienglishquiz.com/vocabulary/logistics-and-supply-chain-c2) — markdown: https://hienglishquiz.com/vocabulary/logistics-and-supply-chain-c2.md
- [Agriculture](https://hienglishquiz.com/vocabulary/agriculture-and-environment-c2) — markdown: https://hienglishquiz.com/vocabulary/agriculture-and-environment-c2.md
- [Aviation & Maritime](https://hienglishquiz.com/vocabulary/aviation-and-maritime-c2) — markdown: https://hienglishquiz.com/vocabulary/aviation-and-maritime-c2.md
- [Buildings & Architecture](https://hienglishquiz.com/vocabulary/construction-and-architecture-c2) — markdown: https://hienglishquiz.com/vocabulary/construction-and-architecture-c2.md
- [Business Management](https://hienglishquiz.com/vocabulary/business-and-management-c2) — markdown: https://hienglishquiz.com/vocabulary/business-and-management-c2.md
- [Civil Works](https://hienglishquiz.com/vocabulary/construction-and-architecture-2-c2) — markdown: https://hienglishquiz.com/vocabulary/construction-and-architecture-2-c2.md
- [Education & Training](https://hienglishquiz.com/vocabulary/education-and-training-c2) — markdown: https://hienglishquiz.com/vocabulary/education-and-training-c2.md
- [Energy & Power](https://hienglishquiz.com/vocabulary/energy-and-power-c2) — markdown: https://hienglishquiz.com/vocabulary/energy-and-power-c2.md

## Related

- All Professional & Specialized sets: https://hienglishquiz.com/vocabulary#professional-specialized
- Vocabulary library: https://hienglishquiz.com/vocabulary
- Section guide: https://hienglishquiz.com/vocabulary/llms.txt