Final answer:
The absolute necessity in safety when loading or unloading any module is to be aware of the activity, to establish a clear and secure area, and to utilize proper personal protective equipment. Qualified personnel should only operate well-maintained machinery while following safety protocols.
Step-by-step explanation:
Common Safety Practice for Loading or Unloading Modules
When loading or unloading any module, a common safety practice that is an absolute necessity is to ensure that all personnel are aware of the activity and that a clear area is established around the loading or unloading zone. This means setting up barriers or using spotters to prevent unauthorized access to the area, which could lead to accidents or injuries. Additionally, it's essential for individuals involved in the operation to be properly trained and to use the correct personal protective equipment (PPE), such as hard hats, safety glasses, and steel-toed boots, as necessary. Any machinery used must be in good working condition, and must be operated only by qualified personnel following all specific safety procedures.