What are the requirements for hydrostatic testing equipment?

The correct choice highlights the combination of necessary safety equipment and protective measures that ensure a safe working environment when performing hydrostatic testing on fire extinguishers. A protective cage is essential to contain any potential hazards during the testing process, such as falling or exploding cylinders. The inclusion of a fire blanket further enhances safety by providing a means to extinguish small fires that may occur. A first aid kit is crucial for addressing any emergencies or injuries that may arise, ensuring immediate access to medical supplies. Lastly, safety cones help to manage the area, alerting others to the testing activity and potentially hazardous conditions surrounding the testing site.

This combination of equipment emphasizes a comprehensive approach to safety, addressing both the physical risks involved in hydrostatic testing and the readiness to respond to emergencies. Each piece plays a vital role in maintaining a secure testing environment.