ACCEPTANCE CRITERIA Sl. ASME SEC. – 8 Div. – 1, No. TYPE OF DEFECT 1. Crack / IF 2. IP None Depth : < 1 mm. & 0.2 TW None None 3. Slag / TI / Elongated Cum. IP < 38mm. (1.5”) in any 6” weld length. Individual length < 2 TW 2/3 t where t is the thickness inclusion Individual width < 3 mm. & < TW / 2 of the weld excluding Cum. Length < 4 TW in any 6” WL Porosity allowed reinforcement. c) Sum of the indication is < a) Isolated t in a length of 6t & the 4. ANSI B - 31.3 For TW < 6 mm. 1/3 TW longest indications are For TW > 6 mm. 1/3 TW x 1.5 separated by 3L where L is b) Random the length of the longest For TW < 6 mm. 1/4 TW indications. The max. length For TW > 6 mm. 1/4 TW x 1.5 of acc. Indication shall be c) Aligned ¾”. Any such indications For TW < 6 mm. Sum of individual por. < TW in 12 TW shorter than ¼” shall be acc. For TW > 6 mm. Sum of individual por. < TW in 12 TW x 1.5 for any plate t. d) cluster For TW < 6 mm. Max. Size of cluster < 25 mm. (1”) or 2 TW whichever is less. 5. 6. 7. 8. Para. – UW – 52 For TW > 6 mm. Max. Size of cluster < 25 mm. (1”) or 2 TW B.T U.C whichever is less. Check density of B.T with base metal Should be reported ACCEPTANCE CRITERIA Sl. TYPE OF ASME SEC. – 8 Div. – 1, No. DEFECT 1. Crack API-1104 Shallow / Crater crack <4mm None 2. Lack of fusion a) Individual < 1” (25mm) None 3 (IF) IFD b) Cumulative < 1” in any 12” weld length. a) Individual < 2” (50mm) Incomplete b) Cumulative < 2” in any 12” weld length a) Individual length < 1” (25mm) 2/3 t where t is the thickness penetration (IP) b) Cumulative < 1” in any 12” weld length of the weld excluding c) < 8% of W L allowed reinforcement. 4. 5 IPD Para. – UW – 52 a) Individual length < 2” (50mm) b) Cumulative < 3” (76) in any 12” weld length 6 ICP a) Individual length < 2” (50mm) b) Cumulative < 2” (50) in any 12” weld length 4. Porosity a) Individual b) Cluster < 3 mm. or 25% of WT Diameter of CP < 13 mm. Cumulative CP < 13 mm. in any 12” WL Individual por. with in a cluster < 2 mm. c) Hollow bead Length of HB < 13 mm. (HB) Cumulative length of HB < 50 mm. in any 12” WL. Individual HB > 6 mm. in length, separated by 50 5. 6. B.T mm. Dimension of BT < ¼” (6.5 mm.) and density of BT U.C < thinnest base metal. a) Cumulative length of EU & IU < 2” (50 mm.) in any 12” WL. 7. Slag, TI, b) Sum of EU & IU in any combination < 1/6” WL. a) Isolated (ISI) < ½” in 12” WL With <3 mm. Elongated b) ESI < 2” With < 1.6 mm. inclusion c) Cum. Length of ESI < 2”. (Pipe OD > 2-3/8”. 8. ACCEPTANCE CRITERIA FOR WELDS Types of Defects ANSI B 31.3 API 1104 Normal Fluid Service 1 Crack Zero / No Imperfections Shallow Crater Or Star Crack ≤ 5/32” (4mm) 2 Lack of Fusion (IF) Zero / No Imperfections 3 Incomplete Penetration (IP) Depth Of IP ≤ 0.8 mm / < 0.2 Tw Cumulative IP ≤ 1.5” (38 mm) in any 6” W.L 4 Slag Inclusion or Elongated Indication Individual Length ≤ 2 T w Individual Width ≤ 1/8” (3.2 mm) / < Tw/2 Cumulative Length ≤ 4Tw in any 6” (150mm) W.L 5 Undercutting Not Applicable. But Should Be Reported 6 7 Concavity (IC) Porosity (Por) Check density with base metal Isolated. For Tw <6 mm -1/3Tw. For > 6 mm1/3Tw x 1.5 Random. For Tw < 6 mm-1/4Tw. For > 6 mm-1/4Tw x 1.5 8 Burn Through Check Density With Base Metal 9 Tungsten Inclusion To be evaluated as rounded indication. Elongated or aligned Tungsten Inclusions are unacceptable. IF Individual ≤1” (25 mm) Cumulative ≤ 1” (25 mm) in any 12” W.L IFD Individual ≤ 2” (50 mm) Cumulative ≤ 2” (50 mm) in any 12” W.L Cumulative length of IFD 8% for W.L<12”. IP Individual ≤ 1” (25 mm) Cumulative ≤ 1” (25 mm) in any 12” W L / ≤ 8% W.L In 12” W.L IPD Individual ≤ 2” (50 mm) Cumulative ≤ 3” (75 mm) in any 12” W.L ICP Individual ≤ 2” (50 mm) Cumulative ≤ 2”(50 mm) in any 12” W.L Isolated (ISI) ≤ Length ½” (12.7 mm) in any 12” W.L. Width (ISI) ≤3 mm Elongated (ESI) ≤ 2” (50 mm) Width (ESI) ≤1.6mm. Cumulative Length (ESI) ≤ 2” (50 mm) (All For Pipe >2.3/8” Cumulative Length of EU & IU ≤ 2” (50mm) in any 12” W.L. Sum of EU & IU Lengths in any Combination ≤ 1/6 of W.L Check density with base metal Individual 1/8”(3.2 mm) or ≤ 25% of W.T Cluster < ½” (12.7mm) Cumulative Cluster ½” (12.7mm) in any 12” W.L Individual Por with in a cluster 1.6mm Hollow Bead length < ½” Cumulative HB 2” (50mm) in any 12” W.L Individual HB < 6 mm separated by <2” Sum Of HB Length < 8% of W.L Dimensions Of Bt< ¼” (6.4mm) Density Bt < Tw. Individual TI is to be evaluated as rounded indications (Por). Elongated or aligned Tungsten Inclusions are unacceptable.