Final answer:
To ensure safety in a permit-required confined space, you should ventilate the space before entry, never enter alone, heed all warning signs and labels, and test electrical equipment before use.
Step-by-step explanation:
The atmosphere inside a permit-required confined space can indeed be dangerous due to potential exposure to toxic gases, lack of oxygen, or other hazardous materials. To ensure safety, several precautions should be taken.
- Ventilate the space before entry to ensure the replacement of any harmful gases with fresh air.
- Never enter the space alone; always have a buddy system or ensure someone is aware of your entry for safety purposes.
- Always heed warning signs and labels as they are there to protect your health and safety.
- Ensure that electrical equipment is properly tested before use to prevent any accidents due to equipment failure or electric shock.
Addressing each part of the question, statement A: 'Ventilate the space before entry' is correct. Statement B: 'Enter the space alone for safety' is incorrect and dangerous. Statement C: 'Ignore warning signs and labels' is also incorrect and could lead to serious injury or death. Statement D: 'Use electrical equipment without testing' is incorrect and could cause dangerous conditions such as fire or electrocution.