CITB Operatives Mock Test – Excavations and Confined Spaces

The CITB Operatives mock test below covers all the questions you’ll face from the Excavations and Confined Spaces section of the CITB Health, Safety and Environment Test in 2024.

There are 20 questions in this practice test and the pass mark is set at 18 out of 20, you will get a pass or fail result after submitting your answers.

Don’t forget to like, share, or comment if you found this CITB Operatives mock test on Excavations and Confined Spaces useful. Good luck!

1. What could happen if oxygen levels in a confined space drops below 8 percent?

Question 1 of 20

2. What should you do if you’re working in a deep trench and notice a lorry with its engine running above you?

Question 2 of 20

3. If you’re working in a confined space and the gas alarm goes off you should:

Question 3 of 20

4. You have to work in an excavation, what is the main hazard while working?

Question 4 of 20

5. What should you do if you have to work in a confined space and realize your permit to work will expire before you can finish the work?

Question 5 of 20

6. Which of these is most likely if you're digging and notice a strange smell coming from the soil?

Question 6 of 20

7. Guard rails placed around the top of an excavation are meant to ___.

Question 7 of 20

8. What substance is probably present in the air if workers notice the smell of rotten eggs?

Question 8 of 20

9. An excavation should be battered back or stepped if ___.

Question 9 of 20

10. What does it mean if you digging and find a run of coloured marker tape?

Question 10 of 20

11. What should you do if you notice the side supports moving around as you're working inside an excavation?

Question 11 of 20

12. If you need to hand dig near any electrical underground services you must use __.

Question 12 of 20

13. What do yellow service pipes carry in relation to underground service pipes?

Question 13 of 20

14. You have to work in a confined space and notice there is sludge at the bottom, what should you do before entering? (Choose 3 answers)

Question 14 of 20

15. Why is a person always positioned immediately outside of a confined space while work is taking place inside it?

Question 15 of 20

16. Why should workers be fully trained and competent before they’re allowed to enter a confined space?

Question 16 of 20

17. What should you do if you’re working in a deep trench and you start to feel dizzy?

Question 17 of 20

18. What is the main cause of death among workers in confined spaces?

Question 18 of 20

19. Methane gas is very dangerous in confined spaces because: (choose 2 answers)

Question 19 of 20

20. What is the safest way of entering and exiting a deep excavation?

Question 20 of 20


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