Standard : API 1104 PROCEDUREI. DATA LAS Proses las : SMAW Tebal material : 11 mm Material : SA 53 type S Grade A Diameter material : 168 mm Elektroda : E 6010 (Root Pass) & E 7016 (Filler + Caping) 3 beads. Diameter elektroda : 2,5 mm (E 6010) & 3,2 mm (E 7016) Posisi las : 5G (Fix welding) Joint design : Single V-groove Electrical characteristic : DC-reverse polarity Technique : String and Weaving Cleaning : Brushing, grinding and chipping

11 mm2 mm1,6 mm3,2 mm 123360 0Joint detail

No. of BeadsProses lasElektrodaDiameter elektrodaAmphereVoltageTravel speed (cm/menit)Ket

1SMAWE 60102,5 mm852411,4

2SMAWE 70163,2 mm9726,410

3SMAWE 70163,2 mm9827,410,5

II. HASIL UJIUji Tarik : Min. Tensile strength = 330 MPaT1 = 482.1439 MPa (Accepted)T2 = 597.1073 MPa (Accepted)Requirement :Menurut standard API 1104 section 5.6.2.3, specimen patah pada base metalUji Bending :RB 1 : Imperfection (1 x 2 mm) AcceptedRB 2 : No defect (Accepted)FB 1 : No defect (Accepted)FB 2 : No defect (Accepted)Requirement :Menurut standard API 1104 section 5.6.4.3, crack tidak melebihi 3 mm.Uji Patah Takik :NB 1 : No defect (Accepted)NB 2 : No defect (Accepted)

Kesimpulan :Material Root Bend 1 terdapat cacat tapi masih memenuhi syarat keberterimaan, sedangkan material uji yang lain tidak terdapat cacat dan ukuran material uji masih mendekati requirement dimension menurut standard API 1104 procedure.Range of Qualification :ItemRange qualificationRemarks

ProcessSMAW5.4.2.1 & 5.3.2.1 (process)Essential

MaterialCarbon Steel SA 53 Type S Grade A 5.4.2.2Essential

Pipe Outside Diameter and Wall thickness168 mm and 11 mm5.4.2.5Essential

Joint design Single V Groove5.4.2.3Essential

ElectrodeE 6010 (root pass) , E 7016 (Filler and Capping) and 3 beads5.4.2.6Essential

PositionPosition Welding 5.4.2.4Essential

PolarityDCEP5.4.2.7Essential

Direction of WeldingVertical Up Hill5.4.2.9Essential

Cleaning Grinding, Brushing and Chipping5.3.2.12Non Essential

Speed of Travel10,63 cm/minute5.4.2.12Essential