What must be visibly inspected prior to a fireworks display by the shooter or an assistant?

The requirement for the visibly inspecting the setup of the electrical firing unit prior to a fireworks display is crucial for ensuring the safety and effectiveness of the firing process. This inspection includes verifying that all connections are secure, the firing unit is properly configured, and any safety measures outlined in the NFPA 1123 code are in place. An erroneous setup could lead to misfires, unintended ignitions, or other hazardous situations during the display, potentially endangering both the crew and the audience.

While the functionality of the electrical match and safety gear for the crew are important components of a fireworks display, they are not the primary focus of a visible inspection in this context. Electrical match functionality is primarily checked to ensure reliability during the firing sequence, and safety gear is typically verified as part of the overall safety management plan, rather than during this specific pre-event visual inspection. Fireworks storage conditions are also critical but are generally assessed in a different context prior to the event, focusing on the safety and security of the fireworks prior to transportation and setup.