Abstract
When procuring the carbon steel line pipe for pipeline project, frequently the purchaser refers to the international standards/specifications such as API SPEC 5L without any particular requirements. Many users thought these standards/specifications already addressed what are needed in their project; but unfortunately it is not completely true. The specification such as API SPEC 5L clearly mentioned in the special notes section that the users should not rely exclusively on the information contained in the specification and it is users’ responsibilities to define the product characteristics which meet the design criteria and suitable for the construction and the operation of the installation (e.g. pipeline). Through this paper, the author tries to give some ideas on particular specification for line pipe.
Highlights
Within the pipeline project, it is a common approach that the owner, purchaser, contractor or the operator used international specification such as API SPEC 5L [1] as technical reference document
The API itself has mentioned in the special notes that the users should not rely exclusively on the information contained in the specification and API emphasized sound business, scientific, engineering, and safety judgment should be used in the employing the information contained in the specification
The standards referred by API SPEC 5L about the Non-destructive testing (NDT) method and technique give a lot of information, but still it is necessary to develop a specific procedure for each NDT process
Summary
It is a common approach that the owner, purchaser, contractor or the operator used international specification such as API SPEC 5L [1] as technical reference document. API SPEC 5L provide line pipe technical specification for wide range of pipeline applications such as for liquid or gas transmission, sweet and sour service, onshore and offshore pipeline, etc. It is users’ responsibilities to define the product characteristics which meet the design criteria and suitable for the construction and the operation of the installation. One important aspect to have high confident level on quality based on the statistical approach is by having the product with limited process variation (i.e. the process is as uniform as possible) For this reason, it is necessary to have the understanding which aspect that should be controlled to limit variations in final product characteristics. How homogeneity shall be maintained depends on the specific property intended for the service
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