What is the required condition for lamp lenses during inspection?

The requirement for lamp lenses during an inspection emphasizes that they should not be broken and must fit properly. This is crucial for several reasons. Intact and properly fitting lamp lenses ensure that they effectively protect the light source from the environment, thereby maintaining safety and functionality. Broken lenses can lead to hazards, such as exposure to live electrical components or an increased risk of fire. Additionally, lenses that fit correctly help in directing light appropriately and preventing any issues related to light dispersion, which can affect visibility and overall performance.

Other conditions such as being loosely fitted or even scratched do not meet the safety and operational standards necessary for effective lamp function, making the requirements clear in maintaining both safety and efficiency in commercial settings. Therefore, the proper condition of lamp lenses is integral to the overall safety and functionality within a commercial inspection context.