It is the responsibility of the user of an AWWA standard to determine that the products described in that standard are suitable for use in the particular application being considered.
Purchaser Options and Alternatives. Some items in this standard are optional requiring identification of the selected option s such as material type, color, and size. When specifying products described in this standard, the purchaser should provide specific information regarding the following: 1. Details of other federal, state, local, and provincial requirements Sec. Standard code designation of the PE material Sec. Color or color coding. For special sizes, the purchaser should establish, in consultation with the pipe manufacturer, the actual outside diameter, the actual dimension ratio, and the actual wall thickness.
Description of fitting e. Fusion conditions. Additional requirements. The following requirements may also be specified in the purchase contract: a. Special quality-assurance testing Sec. Plant inspection by purchaser Sec. Special markings Sec. Shipping Sec. Affidavit of compliance Sec. Modification of Standard. Any modification of the provisions, defini- tions, or terminology in this standard must be provided by the purchaser.
Major Revisions. Major changes made to the standard in this revision include the following: 1. Materials language has been added Sec. The pipe is primarily intended for use in transporting potable water in either buried or aboveground installations. The standard describes 10 dimension ratios DRs for nominal pipe sizes ranging from 4 in. The stipulations of this standard apply when this document has been referenced and then only to PE pressure pipe and fittings, 4 in.
In their latest editions, they form a part of this standard to the extent specified within the standard. In any case of conflict, the requirements of this standard shall prevail. Through In. ANSI B Constructor: The party that provides the work and materials for placement or installation.
Unless otherwise noted, the design factor used in this standard is 0. NOTE: Because the effective strength of PE materials depends on the duration of stress application and temperature, the effective safety factor when using a DF of 0.
For the PE materials described in this standard, the effective safety factor against transient and sustained pressures is at least The actual value is generally larger and depends on the magnitude of the applied transient and sustained pressures, as well as on the operating temperature.
The average specified outside diameter is used for establishing pipe DR using inch—pound units. Hydrostatic design stress HDS : The maximum allowable working hoop stress in the pipe wall when the pipe is subjected to sustained long-term hydrostatic pressure.
Lot: A shipment of resin material that is included under one material certification. Manufacturer: The party that manufactures, fabricates, or produces materials or products. Polyethylene plastics: Thermoplastic extrusion and molding materials prepared by polymerization of no less than 85 percent ethylene and no less than 95 percent of total olefins by weight, plus the addition of compounding ingredients.
These allowances and the methods for determining pressure class are stated in Sec. Production run: The length of time a particular piece of extrusion equipment is set up to produce a certain size of pipe.
Purchaser: The person, company, or organization that purchases any materials or work to be performed. Supplier: The party that supplies material or services. A supplier may or may not be the manufacturer. Surge pressure PS : The maximum pressure increase and decrease that is anticipated in a system as the result of a sudden change in the velocity of the water. Surge pressure is sometimes called water hammer.
Two types of surge pressure must be considered for product selection and system design: a. Recurring surge pressure PRS : Recurring surge pressures occur frequently and are inherent to the design and operation of the system such as normal pump startup or shutdown, and normal valve opening or closure.
Occasional surge pressure POS : Occasional surge pressures are caused by emergency operations. Occasional surge pressure is usually the result of a fire flow or a malfunction, such as a power failure or system component failure, which includes pump seize-up, valve-stem failure, and pressure-relief-valve failure.
Note: Surge pressure caused by emergency pump and valve operations are usually severe. Water column separation may occur if the negative pressure is reduced to the vapor pressure of the liquid. Rejoining of the separated water column typically results in a large pressure rise, which will probably damage the pipe system. Whenever possible, water column separation should be avoided. Working pressure WP : The maximum anticipated, sustained operating pressure applied to the pipe exclusive of transient pressures.
The method for determining WPR is stated in Sec. If a water pipe must pass through a contaminated area or an area subject to contamination, consult with pipe manufacturers regarding permeation of pipe walls, jointing materials, etc. Materials shall comply with the requirements of the Safe Drinking Water Act and other federal requirements. This standard describes PE pipe, fittings, and joints made from PE materials with one of the standard PE code designations as listed in Table 1.
The second through fifth digits of the cell classification number given in Table 1 represent the minimum cell classification for the standard PE code designation listed.
The cell number may be higher for a given PE code designation. PE pipe materials shall contain at least 2 percent finely divided and well-dispersed carbon black. Colored products shall contain sufficient UV stabilizer in lieu of carbon black for 24 months of outdoor storage. Sufficient antioxidant must be added to ensure that production pipe meets the thermal stability requirements of Sec. The PE materials used to make pipe and fittings shall contain no ingredient in an amount that has been demonstrated to migrate into water in quantities that are considered to be detrimental to the water quality.
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