【国外标准】 Standard Specification for Deformed Polyethylene (PE) Liner

This specification covers requirements and test methods for deformed polyethylene (PE) liner for the rehabilitation of gravity flow and nonpressure pipelines. PE material shall conform to the recommended hydrostatic design basis. The process shall involve installing a deformed liner into an existing pipeline then reforming the liner to fit tightly to the bore of the original pipeline. Requirements and test methods that shall conform to this specification include workmanship, dimensions, size, environmental stress crack resistance, tensile strength, tensile elongation, flexural modulus, conditioning, referee testing, quality control testing, marking, and packaging.1.1 This specification covers requirements and test methods for materials of deformed PE liner intended for the rehabilitation of gravity flow and nonpressure pipelines. This application is for municipal sewage, storm water, industrial process liquids and effluents, conduit, and ducts. This renewal process involves installing a deformed liner into an existing pipeline, conduit, or duct, then reforming the liner with heat and pressure to fit tightly to the bore of the original pipeline, conduit, or duct.1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. In referee decisions, inch-pound units shall be used.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.