Welding of Pipelines and Related Facilities According to API 1104

API 1104 is a standard that outlines the guidelines for welding pipelines and related facilities. It covers various aspects of welding, including joint design, weld sizes, and welding procedures. The standard is applicable to both new construction and repair welding of pipelines and related facilities.

This blog is based on international standard API 1104 Reference document.

Welding-of-Pipelines-and-Related-Facilities

According to API 1104, the general requirements for welding pipelines and related facilities are as follows:

1. Welding shall be performed by qualified personnel in accordance with a qualified welding procedure.
2. Welds shall be made using an approved filler metal, and the filler metal shall be compatible with the base metal being welded.
3. Welds shall be made using an approved welding process, and the welding process shall be suitable for the base metal being welded.
4. Welds shall be made in a manner that minimizes the formation of defects, such as porosity, cracks, and incomplete fusion.
5. Welds shall be examined for defects using an approved method, such as radiographic inspection, ultrasonic testing, or magnetic particle inspection.
6. Welds shall be repaired if defects are found. The repair process shall be in accordance with an approved procedure and shall result in a weld that meets the requirements of the standard.
7. Welding shall be done in accordance with the manufacturer’s recommendations and the applicable codes and standards.
8. Welding shall be performed in a safe and controlled manner, taking into account the hazards associated with the welding process and the materials being welded.
9. Welding shall be done in accordance with a written welding procedure that has been qualified in accordance with the requirements of the standard.
10. Welding shall be done in accordance with a written quality control plan that addresses all aspects of the welding process.
11. Welding procedures and welder performance shall be documented and records shall be maintained.
12. Welding equipment shall be properly maintained and calibrated.
13. Welding consumables shall be properly stored and handled.
14. Preheat and post-weld heat treatment shall be applied as required.
15. Welding procedures and welder performance shall be monitored and tested to ensure that the requirements of the standard are being met.

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1. Welding of Pipelines and Related Facilities According to API 1104
2. References and Intranational Standard used in API 1104
3. DEFINITION OF TERMS USED IN API 1104
4. QUALIFICATION OF WELDING PROCEDURES FOR WELDS CONTAINING FILLER-METAL ADDITIVES
5. QUALIFICATION OF WELDERS
6. DESIGN AND PREPARATION OF A JOINT FOR PRODUCTION WELDING
7. INSPECTION AND TESTING OF PRODUCTION WELDS
8. ACCEPTANCE STANDARDS FOR NONDESTRUCTIVE TESTING
9. REPAIR AND REMOVAL OF DEFECTS
10. AUTOMATIC WELDING WITHOUT FILLER-METAL ADDITIONS
11. MECHANIZED WELDING WITH FILLER METAL ADDITIONS
12. Equipment and Material Specification