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IAPMO Advances Development of 2024 Uniform Codes During Technical Committee Meetings

The International Association of Plumbing and Mechanical Officials has completed technical committee meetings toward the proposed 2024 editions of the Uniform Plumbing Code and Uniform Mechanical Code, in development of American National Standards governing the installation and maintenance of plumbing and mechanical systems nationwide.

The UPC Technical Committee acted on 155 public comments. Topics generating the most debate included rehabilitation of existing building sewers, common-use facilities and legionella risks. Other topics discussed included building service and supply piping, pitless well systems, two-way cleanouts, freeze protection, tankless water heater connections, waste piping, greywater systems, indoor horticultural facilities, and professional qualifications.

The UMC Technical Committee acted on 203 public comments. A2L refrigerant systems and legionella risks were spiritedly debated, with numerous comments submitted. Other topics discussed included ventilation and exhaust systems, air filtration, press-connect joints, air conditioning and duct systems, indoor horticultural facilities, hydronic and geothermal energy systems, and professional qualifications.

The UMC Technical Committee commissioned a new Legionella Task Group be formed to address exposure risk to the public from mechanical equipment. This task group will tackle the issue of control and intervention of legionella associated with mechanical systems.

In accordance with IAPMO’s American National Standards Institute accredited Regulations Governing Committee Projects, balloting of the consensus bodies, the UPC and UMC technical committees, opened on May 16 and concluded June 10. The report on comments, or ROC, for each document will be created from these balloted actions and made available Aug. 12. All consensus body actions will be published in the ROC.

Learn more at iapmo.org.

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