What thermal test is specified for packaging fissile material?

• A. Thermal Test at 800°C for 30 minutes
• B. Thermal Test at 600°C for 15 minutes
• C. Thermal Test at 900°C for 20 minutes
• D. Thermal Test at 1000°C for 40 minutes

Answer: (A)

Fissile material packaging must prove it can survive a severe fire scenario without releasing its contents. The thermal test used for this purpose is 800°C held for 30 minutes. This specific combination is chosen to simulate intense, realistic fire conditions and to verify that the package remains intact, maintains containment, and retains shielding under those conditions.

Other temperature-duration options would represent either less severe conditions or exceed the standard test requirements, which is why they are not used. The 800°C for 30 minutes test is the established fire scenario specified in the regulations for fissile material packaging to ensure safety during transport.