10 C.F.R. § 71.61
Special requirements for Type B packages containing more than 10 5 A 2 .
Cite as 10 C.F.R. § 71.61 (2026)
A Type B package containing more than 10 5 A 2 must be designed so that its undamaged containment system can withstand an external water pressure of 2 MPa (290 psi) for a period of not less than 1 hour without collapse, buckling, or inleakage of water. [69 FR 3795, Jan. 26, 2004]