Which statement best describes the identification requirement for discharge nozzles?

• A. Barcoded
• B. Permanently Marked
• C. Repainted
• D. Not Marked

Answer: (B)

Identification markings on discharge nozzles must be permanent so they stay legible and recognizable throughout the life of the system, despite exposure to grease, heat, and cleaning. Permanent markings ensure technicians and inspectors can reliably identify each nozzle, confirm the correct nozzle for a given hood or appliance, verify compatibility and system components, and facilitate proper servicing or recharging after a discharge. Barcodes can wear off or become hard to read in a kitchen environment, repainting can cover or obscure markings, and not marked provides no reliable way to identify the nozzle at all, so the durable, permanent marking is the necessary standard.