Section 54.25-8 - Radiography (modifies UW-11(a), UCS-57, UNF-57, UHA-33, and UHT-57)(a) Full radiography is required for all Class I and Class I-L vessels regardless of thickness. (Refer to table 2 to § 54.01-5 for applicable requirements.)(b) Class II-L vessels must be spot radiographed. The exemption provided in UW-11(c) of Section VIII of the ASME BPVC (incorporated by reference; see § 54.01-1 ) does not apply. (Refer to table 2 to § 54.01-5 for applicable requirements.)(c) Each butt-welded joint in a Class II or III pressure vessel cargo tank must be spot radiographed, in accordance with UW-52, regardless of diameter or thickness, and each weld intersection or crossing must be radiographed for a distance of at least 10 thicknesses from the intersection.CGFR 68-82, 33 FR 18828, Dec. 18, 1968, as amended by CGD 85-061, 54 FR 50964, Dec. 11, 1989; USCG-2003-16630, 73 FR 65170 , Oct. 31, 2008