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46 C.F.R. § 52.01-100   Openings and compensation (modifies PG–32 through PG–39, PG–42 through PG–55).

Title 46 - Shipping

Title 46: Shipping
PART 52—POWER BOILERS
Subpart 52.01—General Requirements

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§ 52.01-100   Openings and compensation (modifies PG–32 through PG–39, PG–42 through PG–55).

(a) The rules for openings and compensation shall be as indicated in PG–32 through PG–55 of the ASME Code except as noted otherwise in this section.

(b) (Modifies PG–39.) Pipe and nozzle necks shall be attached to vessel walls as indicated in PG–39 except that threaded connections shall not be used under any of the following conditions:

(1) Pressures greater than 4137 kPa (600 psig);

(2) Nominal diameters greater than 51mm (2 in.); or

(3) Nominal diameters greater than 19mm (0.75 in.) and pressures above 1034 kPa (150 psig).

(c) (Modifies PG–42.) Butt welding flanges and fittings must be used when full radiography is required by §56.95–10.

[CGD 81–79, 50 FR 9432, Mar. 8, 1985]

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