Which information must be permanently marked on halocarbon agent containers?

• A. The tare weight and gross weight, and the superpressurization level of the container
• B. The agent name and nominal volume
• C. The installation date and serial number
• D. The maximum operating temperature

Answer: (A)

Permanently marking tare weight, gross weight, and the superpressurization level on halocarbon agent containers ensures you can quickly and reliably determine how much agent is in the cylinder and how it is pressurized for discharge. Tare weight is the empty cylinder’s mass, and gross weight is the mass when filled; subtracting gives the net agent content, which helps verify that the cylinder has an adequate amount for discharge. The superpressurization level indicates the pressure used to drive the agent out during release, a critical factor for proper performance and safety during recharge and discharge operations. These marks are permanent so they remain readable through handling and over the service life of the cylinder.

Other information like the agent name and nominal volume, installation date and serial number, or maximum operating temperature may be useful for records or safety plans, but they do not constitute the permanent markings required to verify content and discharge readiness.