ASME B31-8a pdf free download

ASME B31-8a pdf free download ASME B31.8-1999 GAS TRANSMISSION AND DISTRIBUTION PIPING SYSTEMS
814.2 Steel, Cast Iron, and Ductile Iron Piping Components Specific requirements for these piping components that qualify under para. 811.1(a) are found in Chapter III. 815 EQUIPMENT SPECIFICATIONS Except for the piping components and structural materials listed in Appendices A and C, it is not intended to include in this Code complete specifications for equipment. Certain details of design and fabrication, however, necessarily refer to equipment, such as pipe hangers, vibration dampeners, electrical facilities, en- gines, compressors, etc. Partial specifications for such equipment items are given herein, particularly if they affect the safety of the piping system in which they are to be installed. In other cases where the Code gives no specifications for the particular equipment item, the intent is that the safety provisions of the Code shall govern, insofar as they are applicable. In any case, the safety of equipment installed in a piping system shall be equivalent to that of other parts of the same system.
816 TRANSPORTATION OF LINE PIPE Any pipe having an outer-diameter-to-wall thickness ratio of 70 to 1 or more, that is to be used in a pipeline at a hoop stress of 20% or more of the specified minimum yield strength that has been or will be transported by railroad, inland waterway, or by marine transportation, must have been or shall be loaded in accordance with API RP5L1 or API RP5LW, respectively. Where it is not possible to establish that pipe was transported in accordance with the appropriate recommended practice, the pipe must be hydrostatically tested for at least 2 hr to at least 1.25 times the maximum allowable operating pressure if installed in a Class 1 location, or to at least 1.5 times the maximum allowable operating pressure if installed in a Class 2, 3, or 4 location.
817 CONDITIONS FOR THE REUSE OF PIPE 817.1 Reuse of Steel Pipe 817.11 Removal of a portion of an existing steel line and reuse of the pipe in the same line or in a line operating at the same or lower pressure is permitted, and is subject to the restrictions of paras. 817.13(a), (f), and (i).