What type of illumination is permitted during welding and cutting operations?

The correct type of illumination permitted during welding and cutting operations is listed safety type flashlights and safety lamps. This is crucial because these lighting options are specifically designed to be safe in environments where flammable gases and materials are present, which is common during welding and cutting processes.

Using safety type flashlights and lamps reduces the risk of ignition and ensures that workers can see clearly without introducing hazards. They are built to withstand heat and potential sparks that may occur during welding, thus adhering to safety regulations for personal protective measures.

In contrast, standard electric bulbs may not provide the appropriate safety features necessary in hazardous environments, while fluorescent lights may not be adequate for ensuring safety against sparks or heat. Portable generators are not a form of illumination themselves but are utilized to power equipment; hence they do not directly relate to the type of lighting used during these operations.