ANSI AWWA C200-17 pdf download.Steel Water Pipe, 6 In. (150 mm) and Larger
The selection of materials is critial for water service and distribution piping in locations where there is likelihood the pipe will be exposed to significant con- centrations of pollutants composed of low-molecular-weight petroleum products or organic solvents or their vapors. Documented research has shown that pipe materials (such as polyethylene and polyvinyl chloride) and elastomers, such as those used in jointing gaskets and packing glands, are subject to permeation by low- molecular-weight organic solvents or petroleum products. If a water pipe must pass through such a contaminated area or an area subject to contamination, con- sult with the manufacturer regarding permeation of pipe walls, jointing materials, and so forth before secting materials for use in that area.
4.5.1 General. If the purchaser's documents do not specify the type of pipe or steel, the manufacturer shall select the type of pipe and steel from this stan- dard to meet the design requirements of the purchaser's documents. Pipe shall be fabricated from plate, sheet, or coil from Table 1. The steel shall be fully killed and shall conform to fine-grain practice.
4.5.2 Charpy impact testing Charpy impact testing shall be utilized to eval- uate steel used to fabricate pipe that will be restrained in its application. Restrained pipe with a minimum service temperature below 30°F (- 1°C) should be evaluated by other methods, such as ASME Boiler and Pressure Vessel Code (BPVC) Section VIII, Division 1, UG -20(f). Steel for pipe in excess of 2.0-in. (50-mm) thick shall be Charpy tested. Steel for pipe 0.500 in. (13 mm) or thinner does not require Charpy testing. Other pipe thicknesses shall be evaluated using Figure 1. Plot the minimum service temperature and the steel thickness. When a minimum service temperature is not provided by the purchaser, 32°F (- 0°C) shall be used for the evaluation. Materi- als that comply with Sec. 4.5.1 are Group 1. Group 1 materials that plot below the Group 1 line require Charpy testing AIll other materials are Group 2. Group 2 mate- rials that plot below the Group 2 line require Charpy testing. Materials that plot on or above the applicable line do not require Charpy testing.ANSI AWWA C200-17 pdf download.