API 1104:2005 pdf download

API 1104:2005 pdf download.Welding of Pipelines and Related Facilities.
5.6.3.2 Method
The Nick-break specimens shall be broken by pulling in a tensile machine, by supporting the ends and striking the center, or by supporting one end and striking the oiher end with a hammer. The exposed area of the fracture shall be at least 3/4 in. (19 mm) wide.
5.6.3.3 RequIrements
The exposed surfaces of each Nick-break specimen shall show complete penetration and fusion. The greatest dimension of any gas pocket shall not exceed 1/ie in. (1.6 mm). and the combined area of all gas pockets shall not exceed 2% of the exposed surface area. Slag inclusions shall not be more than 1/32 in. (0.8 mm) in depth and shall not be more than I/ in, (3 mm) or one-half the nominal sall thickness in length. whichever is smaller. There shall be at least 1/2 in. (13 mm) separation between adjacent slag inclusions. The dimensions should be measured as shown in Figure 8. Fisbeyes. as defined in AWS A3.0. are not cause br rejection.
5.6.4 Root- and Face-bend Test
5.6.4.1 Preparation
The root- and face-bend test specimens (see Figure 6) shall be approximately 9 in. (230 mm) long and approximately I in. (25 inm wide. and their long edges shall be rounded. They may he machine cut or oxygen cut. The cover and root-bead reinforcements shall be removed (lush with the surfaces of the specimen. These surfaces shall be smooth, and any scratches that exist shall be light and transverse to the weld.
5.6.4.2 Method
The root- and face-bend specimens shall be bent in a guided-bend lest jig similar to that shown in Figure 9. Each specimen shall be placed on the die with the weld at mid span. Face-bend specimens shall be placed with the face of the weld toward the gap, and root-bend specimens shall be placed with the root of the weld bowani the gap. The plunger shall be ti,reed into the gap until the cur%ature of the spedmen is approximately U-shaped.
5.6.5 Side-bend Test
5.6.5.1 Preparation
The side-bend lest specimens (see Figure 7) shall be approximatcly 9 in. (230 mm) long and approximately ½ in. (13 mm) wide, and their long edges shall be rounded. They shall be machine cut, or they may be oxygen cut to approximutely a 3/4 in. (19 mm) width and then machined or ground to the 1/2 in. (13 mm) width. The sides shall be smooth and parallel. The cover and root-bead reint&cemenis shall be removed flush with the surfaces of the specimen.
5.6.5.2 Method
The side-bend specimens shall be bent in a guided-bend test jig similar to that showii in Figure 9. Each specimen shall be placed on the die with the weld at mid span and with the face of the weld perpendicular to the gap. The plunger shall be forced into the gap unul the curvature of the specimen is approximately U-shaped.