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.
The Oklahoma Uniform Building Code Commission (OUBCC) has unanimously approved the adoption of IAPMO’s Uniform Plumbing Code (UPC®) Appendix M — the Water Demand Calculator® — into Chapter 6 of the state’s adopted International Plumbing Code as an alternative methodology for sizing water supply piping in single- and multifamily buildings.
IAPMO® applauds the Texas Department of Licensing and Regulation (TDLR) for its adoption of the 2024 Uniform Mechanical Code (UMC®) for applications regulated under the state's Air Conditioning and Refrigeration Contractors program. The updated code is scheduled to become effective Sept. 1.
IAPMO’s Systems Certification Body (SCB) has been accredited by the ANSI National Accreditation Board (ANAB) to provide ISO/IEC 20000-1 certification to existing and prospective clients wishing to demonstrate the effectiveness of their IT service management systems.