Prepare for the TFM-04 Fire Extinguisher License – A with comprehensive flashcards and multiple choice questions. Each question offers hints and explanations. Get ready for your exam!

Multiple Choice

Lube/joint compound/tape can not be applied to which threads?

In oxygen service, you must keep threads free of any lubricant, joint compound, or tape. Oil-based or hydrocarbon products can ignite in enriched oxygen environments, so no such substances should be applied to any threads—neither male nor female. If a seal is needed, use only oxygen-approved methods and materials specified for that service, applied exactly as directed. Thus, neither type of thread should receive lube, joint compound, or tape.

In oxygen service, you must keep threads free of any lubricant, joint compound, or tape. Oil-based or hydrocarbon products can ignite in enriched oxygen environments, so no such substances should be applied to any threads—neither male nor female. If a seal is needed, use only oxygen-approved methods and materials specified for that service, applied exactly as directed. Thus, neither type of thread should receive lube, joint compound, or tape.