ASME B31.4:2012 pdf free download – Pipeline Transportation Systems for Liquids and Slurries
(a) This pipeline transportation systems Code is one of several sections of The American Society of Mechani- cal Engineers Code for Pressure Piping, ASME B31, and it is the responsibility of the user of this Code to select the applicable Section. This Section is published as a separate document for convenience. This Code applies to hyd rocarbons, liquid petroleum gas, anhydrous ammonia, alcohols, and carbon dioxide. Throughout this Code, these systems will be referred to as liquid pipeline systems.
(b) The requirements of this Code are adequate for safety under conditions normally encountered in the operation of liquid pipeline systems. Requirements for all abnormal or unusual conditions are not specifically provided for, nor are all details of engineering and con- struction prescribed. All work performed within the Scope of this Code shall comply with the safety stan- dards expressed or implied.
(c) The primary purpose of this Code is to establish requirements for safe design, construction, inspection, testing, operation, and maintenance of liquid pipeline systems for protection of the general public and operating company personnel, as well as for reasonable protection of the piping system against vandalism and accidental damage by others, and reasonable protection of the environment.
(d) This Code is concerned with employee safety to the extent that it is affected by basic design, quality of materials and workmanship, and requirements fou construction, inspection, testing, operation, and mainte- nance of liquid pipeline systems. Existing industrial safety regulations pertaining to work areas, safe work practices, and safety devices are not intended to be sup- planted by this Code.
(e) The designer is cautioned that the Code is not a design handbook. The Code does not do away with the need for the engineer or competent engineering judg- ment. The specific design requirements of the Code usu- ally revolve around a simplified engineering approach to a subject. It is intended that a designer capable of applying more complete and rigorous analysis to special or unusual problems shall have latitude in the develop- ment of such designs and the evaluation of complex or combined stresses. In such cases, the designer is respon- sible for dermonstrating the validity of his approach.
(f) This Code shall not be retroactive or construed as applying to piping systems installed before the date of issuance shown on the document title page insofar as design, materials, construction, assembly, inspection, and testing are concerned. It is intended, however, that the provisions of this Code shall be applicable within 6 mo after date of issuance to the relocation, replace- ment, and uprating or otherwise changing of existing piping systems; and to the operation, maintenance, and corrosion control of new or existing piping systems. After Code revisions are approved by ASME and ANSI, they may be used by agreement between contracting parties beginning with the date of issuance. Revisions become mandatory or minimum requirements for new installations 6 mo after date of isuance except for piping installations or components contracted for or under con- struction prior to the end of the 6-mo period.
(G) The users of this Code are advised that in some areas legislation may establish governmental jurisdic- tion over the subject matter covered by this Code and are cautioned against making use of revisions that are less restrictive than former requirements without having assurance that they have been accepted by the proper authorities in the jurisdiction where the piping is to be installed. The Department of Transportation, United States of America, rules governing the transportation by pipeline in interstate and foreign commerce of petro- leum, petroleum products, and liquids such as anhy- drous ammonia or carbon dioxide are prescribed under Part 195 一Transportation of Hazardous Liquids by Pipeline, Title 49一Transportation, Code of Federal Regulations.