Answer :
Final answer:
In confined space welding, communication can be established through the use of walkie-talkies for clear verbal instructions or the pulling and tugging of a lifeline for non-verbal cues. Knocking or screaming are discouraged due to lack of clarity and potential risk.
Explanation:
In confined space welding, visual communication is often not possible. Therefore, alternative methods of communication must be used. Task-specific instructions could be provided through a walkie-talkie for clear and instant communication. The pulling and tugging of a lifeline could also be employed as a non-verbal signal between the welder and safety monitor. Methods like knocking or screaming are generally discouraged as they may not be clear or audible enough and can lead to misunderstanding and potential accidents.
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