N.Y. Comp. Codes R. & Regs. Tit. 12 §§ 14-3.9

Current through Register Vol. 46, No. 45, November 2, 2024

Section 14-3.9 - Wasted areas

(a) Shells, drums and headers. Wasted areas in stayed and unstayed shells, drums and headers may be built up by welding provided that in the judgment of the authorized inspector the strength of the structure will not be impaired. Where extensive weld build-up is employed, the authorized inspector may require an appropriate method of nondestructive examination for the complete surface of the repair. Wasted areas shall be built up by welding as specified in Figure 14-3.9(1) or by other equivalent methods.

(b) Access openings. Wasted areas around access openings may be built up by welding provided that in the judgment of the inspector the strength of the structure will not be impaired, or they shall be repaired as specified in Figure 14-3.9(2) or by other equivalent methods. The area to be repaired may not be closer than two inches from any knuckle.

(c) Flanges.

(1) Wasted flange faces may be cleaned thoroughly and built up with weld metal. Built-up flange faces should be machined in place, if possible, and shall be machined to a thickness not less than that of the original flange or that required by calculations in accordance with the provisions of the applicable section of the ASME Code.

(2) Wasted flanges may also be remachined in place without building up with weld metal provided the metal removed in the process does not reduce the thickness of the flange to a measurement below that calculated above. Flanges which leak because of warpage or distortion and which cannot be remachined shall be replaced with new flanges which have at least the dimensions conforming to the applicable section of the ASME Code.

(d) Tubes. Wasted areas on tubes may be repaired by welding provided that in the judgment of the inspector the strength of the tube has not been impaired. Where deemed necessary, competent technical advice shall be obtained from the manufacturer or from another qualified source. This may be necessary when considering such items as size limitations of repaired areas, minimum tube thickness to be repaired, tube environment, location of the tube in the boiler and other similar conditions.

(e) The building up or repair by welding of rivet heads, staybolt ends, braces or attachments to braces, ogee sheets, grooved, pitted or corroded areas of unstayed surfaces other than as provided above is prohibited.

N.Y. Comp. Codes R. & Regs. Tit. 12 §§ 14-3.9