AWWA COMMENT PERIOD ON AWWA C621, Internal Pipe Joint Seal Assemblies for Water Service

AWWA COMMENT PERIOD ON AWWA C621, Internal Pipe Joint Seal Assemblies for Water Service

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 ETS Support (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  December 9, 2024.

Send comments to:
Amanda Dail, ADail@awwa.org
303.734.3466 phone

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 Therefore, this copy is not suitable for continued utilization and is intended only for comment purposes.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 selection and installation requirements for field-applied, mechanical, internal pipe joint seal assemblies for water service. Internal joint sealing is a method of in situ pipe joint rehabilitation that is used to correct leaking pipe joints; to strengthen weak joints or localized wall pitting and other minor defects at joints; to seal leaks at cracks; to prevent exfiltration or infiltration; or used in concert with other non-joint specific methods of pipe rehabilitation (cement–mortar lining, cured-in-place pipe lining, etc.).

MAJOR REVISIONS
Major revisions made to the standard in this edition include the following:

• Added references to OSHA safety guidance for man-entry to pipe (Foreword I.A.).
• Added hole and gap size limitations and special considerations (Foreword I.A. and Sec. 4.3).
• Revised Scope to clarify that the covered seals are not designed to repair structural defects (Sec. 1.1).
• Clarified definitions to reflect that some terms may differ by manufacturer (Sec. 3).
• Added a definition for pipe joint (Sec. 3).
• Removed minimum time associated with last expansion and replaced with a reference to the manufacturer’s recommended schedule (Sec. 4.5.9.5 and Sec. 5.2).
• Changed interlocking seals for adjoining assemblies from required to optional (Sec. 4.5.10).
• Clarified the testing is intended for external pressure only and hydrostatic pressure may be required prior to return to service (Sec. 5.2.1).