Piping codes and standards pdf

Piping codes defines the requirements of design, fabrication, use of materials, tests and inspection of pipes and piping systems - what you need to do. A code has a limited jurisdiction defined by the code. A code is not law, but can be adopted into law. Piping standards define application design and construction rules and requirements for piping components as flanges, elbows, tees, valves etc.

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Standardization can, and does, reduce cost, inconvenience, and confusion that result from unnecessary and undesirable differences in systems, components and procedures.

Industry standards are published by professional societies, committees and trade organizations. A code is basically a standard that has been generally accepted by the government. The objective of each code is to ensure public and industrial safety in a particular activity or equipment. Codes are often developed by the same organization that develops standards. These organizations also develop good engineering practices and publish as Recommended Practices. The intent of these documents is misunderstood since definitions of Codes, Standards and Recommended Practices are not always correctly understood.

The following definitions are generally accepted. CODE A group of general rules or systematic procedures for design, fabrication, installation and inspection prepared in such a manner that it can be adopted by legal jurisdiction and made into law. The users are responsible for the correct application of the same. Compliance with a standard does not itself confer immunity from legal obligation. Companies also develop Guides in order to have consistency in the documentation.

These cover various engineering methods, which are considered good practices, without specific recommendation or requirements. Each country has its own Codes and Standards. On global basis, American National standards are undoubtedly the most widely used and compliance with those requirements are accepted world over. In India, other than American standards, British standards and Indian standards are also used for the design and selection of equipment and piping systems.

Country Organization Abbreviation No. The work of preparing International Standards is normally carried out through ISO technical committees.

International organizations, governmental and non-governmental, in liason with ISO also take part in the work. The main task of the technical committee is to prepare International Standards. Draft International Standards adopted by technical committees are circulated to member bodies for voting. The American Standards referred by Piping Engineers are mainly the standards by: 1.

When specific mode of manufacture of the element is not the concern, then the material can be identified by the AISI standards. Subsequently, the code designation was changed.

Refineries and chemical plants are designed based on the same. It is the responsibility of the user to select the Code Section, which most nearly applies to a proposed piping installation. Factors to be considered include: Technical limitations of the Code Section, jurisdictional requirements and the applicability of other Codes and Standards. All applicable requirements of the selected Code shall be met. For some installations, more than one Code Section may apply to different parts of the installation.

The user is responsible for imposing requirements supplementary to those of the Code if necessary to assure safe piping for the proposed installation.

When no section of the Code specifically covers proposed installation, the user has the discretion to select any section determined to be generally applicable.