What is the primary focus of API 1104?

The primary focus of API 1104 is the welding of pipelines and related facilities. This standard provides guidelines and specifications for the welding process as it pertains to the fabrication and construction of pipeline systems. The intent is to ensure that welding practices meet the necessary safety and quality standards to maintain the integrity and reliability of pipelines, which can be critical for the transportation of oil, gas, and other fluids.

The scope of API 1104 encompasses various aspects related to welding, including the qualification of welders, welding procedures, and the inspection and testing of welds. By focusing primarily on welding practices, API 1104 seeks to minimize potential failures and ensure the safety of the pipeline infrastructure.

In contrast, other options such as inspection of manufacturing processes, material selection for pipelines, and environmental impact assessments, while important in their respective contexts, do not represent the primary focus of API 1104. Instead, these topics may be covered under different standards and practices that address each specific area within the broader field of pipeline engineering and construction.