Final answer:
All of the listed equipment, including industrial fans/ventilators, smoke ejector fans, and duct work, are used in the ventilation of confined spaces, hence the correct answer is (d) All of the above.
Step-by-step explanation:
The equipment used to perform ventilation procedures in confined spaces includes all of the following:
- Industrial fans/ventilators, which are designed to move large volumes of air to ensure adequate ventilation.
- Smoke ejector fans, which are specifically used to remove smoke and other contaminants from a confined space.
- Duct work, which is used to direct airflow and can be critical in ensuring that ventilated air reaches all parts of a confined space.
Therefore, the correct answer is (d) All of the above. Each of these components plays an essential role in creating a safe breathing environment within confined spaces by ensuring sufficient air exchange.
Always ventilate and follow manufacturers' instructions when you use products or appliances that may release pollutants into the indoor air.