AWWA Comment Period Begins on C620 - Spray-In-Place Polymeric Lining for Potable Water Pipelines 4 In. (100 mm) and Larger
November 23, 2018

AWWA solicits public comments on all proposed new AWWA Standards, and on all proposed revisions, reaffirmations, or withdrawals of existing AWWA Standards. The referenced standards project is being considered for approval and the publication of this notice begins the 45-day public comment period for AWWA and ANSI. An electronic public review copy of the proposed standard can be obtained for review during the comment period by emailing etssupport@awwa.org. Comments must be submitted in writing to the AWWA contact listed below no later than the last day of the comment period specified herein. Such comments shall be specific to the section(s) of the standard under review and include sufficient detail so as to enable the reader to understand the commenter's position, concerns and suggested alternative language, if appropriate.

AWWA Comment Period closes on 1/7/19.

Send comments to:
Emily Meek
303.347.6192 phone
303.795.7603 fax

The review copy will be edited for publication and may also be revised as appropriate based on any comments received during the public comment period. Therefore, this copy is not suitable for continued utilization and is intended only for comment purposes.

Final publication of the standard may take several months. When it is available, a notice will be published in the official notice section of Journal - American Water Works Association. The standard becomes an effective AWWA standard on the first day of the month following such publication in Journal - American Water Works Association.

SCOPE
This standard describes the requirements for materials, equipment, certification and procedures for the field application of spray-in-place polymeric linings (SIPP) to the interior of existing potable water pipelines. The water pipelines to be renewed may be constructed of pipe materials such as, steel, ductile iron, cast iron, asbestos cement, and concrete. Related work required for performing a complete contract is also generally described.

The standard covers all polymeric materials used in spray-in-place applications including epoxies, polyurethanes, polyureas and hybrids of these compounds.

The in-situ spray application of polymeric linings are appropriate for pipe sections which can be lined with a computerized spray rig. The umbilical hose of the rig is inserted through the pipeline and then withdrawn progressively and uniformly using a computerized winch and spray head that applies the lining on the pipe surface to provide a continuous, smooth lining of uniform thickness.

MAJOR REVISIONS
Major revisions made to the standard in this edition include the following:
1. The title of the standard was changed from, “Spray-Applied In-Place Epoxy Lining of Water Pipelines, 3 In. (75 mm) and Larger” to “Spray-In-Place Polymeric Lining for Potable Water Lines 4 In. (100 mm) and Larger.
2. The standard has been extensively revised and amended to include the requirements and procedures for spray-in-place lining of potable water pipes using polymeric materials, including epoxies, polyurethanes, polyureas, and polymeric hybrids.