Ontario, Calif. — The IAPMO Standards Council on Nov. 4 issued a tentative interim amendment (TIA) to the 2024 edition of the Uniform Mechanical Code (UMC®).
UMC TIA 003-24 revises UMC Chapter 11, Table 1102.3 (Refrigerant Groups, Properties, and Allowable Quantities), to update the permissible refrigerant quantities pertaining to refrigerant concentration limits (RCLs) and lower flammability limits (LFLs).
The TIA was balloted through the Mechanical Technical Committee in accordance with the Regulations Governing Committee Projects to determine if there was the necessary three-fourths majority support, based on technical merit and emergency nature, to establish the recommendation for issuance.
In determining whether to issue a TIA, the Standards Council looks to the Technical Committee letter ballot for a recommendation of support. Upon a full review and consideration of all the information available to it, the Council concluded that a clear and substantial basis exists to issue UMC TIA 003-24.
To examine this TIA in its entirety, please view: https://www.iapmo.org/media/n0edywdo/2024-umc-tia-003-issued.pdf
TIAs are proposals based on the determination of an emergency nature requiring prompt action to amend code that contains an error or omission that was overlooked during the regular code development process, contains a conflict within the document or with another IAPMO document, or to correct a hazard, promote an advancement in safeguarding the public or provide an opportunity to correct an adverse impact on a product or method of installation.
IAPMO® Senior Vice President of Codes and Standards Development Hugo Aguilar, P.E., has been named a recipient of the American National Standards Institute’s (ANSI) Meritorious Service Award, which recognizes “significant contributions to the U.S. voluntary standardization system.”
Ontario, California — The Uniform Plumbing Code (UPC®) Technical Committee is seeking special subject experts to participate in the following task group: Building Drain Cured-In-Place.
IAPMO® has published the 2027 editions of the Uniform Plumbing Code® (UPC) and Uniform Mechanical Code® (UMC) in both hardcopy and electronic versions, completing a three-year consensus development process accredited by the American National Standards Institute (ANSI).