StacksVerified U.S. regulatory reference

46 CFR §52.01-100

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)The rules for openings and compensation must be as indicated in PG-32 through PG-55 of Section I of the ASME BPVC (incorporated by reference; see § 52.01-1) except as noted otherwise in this section.
  2. (b)(Modifies PG-39.) Pipe and nozzle necks must be attached to vessel walls as indicated in PG-39 of Section I of the ASME BPVC except that threaded connections must not be used under any of the following conditions:
  3. (c)(Modifies PG-42.) Butt-welding flanges and fittings must be used when full radiography is required by § 56.95-10 of this subchapter.