ASME B31.4-2009 pdf download.Pipeline Transportation Systems for Liquid Hydrocarbons and Other Liquids.
400 GENERAL STATEMENTS (a) This liquid transportation systems Code is one of several sections of The American Society of Mechanical 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 hydrocarbons, liquid petroleum gas, anhydrous ammonia, alcohols, and carbondioxide. Throughoutthis 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 for 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.
(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 — Transportation of Hazardous Liquids by Pipeline, Title 49 — Transportation, Code of Federal Regulations. 400.1 Scope 400.1.1 This Code prescribes requirements for the design, materials, construction, assembly, inspection, and testing of piping transporting liquids between pro- duction facilities, tank farms, natural gas processing plants, refineries, pump stations, ammonia plants, termi- nals (marine, rail, and truck), and other delivery and receiving points. (See Figs. 400.1.1-1 and 400.1.1-2.) Piping consists of pipe, flanges, bolting, gaskets, valves, relief devices, fittings, and the pressure- containing parts of other piping components. It also includes hangers and supports, and other equipment items necessary to prevent overstressing the pressure- containing parts. It does not include support structures such as frames of buildings, stanchions, or foundations, or any equipment such as defined in para. 400.1.2(b).
general corrosion: uniform or gradually varying loss of wall thickness over an area. girth weld: a complete circumferential butt weld joining pipe or components. imperfection: a discontinuity or irregularity that is detected by inspection. in-line inspection tools: any instrumented device or vehi- cle that records data and uses nondestructive test meth- ods or other techniques to inspect the pipeline from the inside. Also known as intelligent or smart pig. internal design pressure: internal pressure used in calcula- tions or analysis for pressure design of a piping compo- nent (see para. 401.2.2). liquefied petroleum gas(es) (LPG): liquid petroleum com- posed predominantly of the following hydrocarbons, either by themselves or as mixtures: butane (normal butane or isobutane), butylene (including isomers), pro- pane, propylene, and ethane. liquid alcohol: any of a group of organic compounds con- taining only hydrogen, carbon, and one or more hydroxyl radicals that will remain liquid in a moving stream in a pipeline. liquid anhydrous ammonia: a compound formed by the combination of the two gaseous elements nitrogen and hydrogen, in the proportion of one part of nitrogen to three parts of hydrogen, by volume, compressed to a liquid state. mainline pipelines: all in-line pipeline pipes, fittings, bends, elbows, check valves, and block valves between scraper traps. maximum steady state operating pressure: maximum pres- sure (sum of static head pressure, pressure required to overcome friction losses, and any back pressure) at any point in a piping system when the system is operating under steady state conditions. miter: two or more straight sections of pipe matched and joined on a line bisecting the angle of junction so as to produce a change in direction.