Permit Review Detail
Review Status: Requires Resubmit
Review Details: COMMERCIAL REVIEW - FULL v.2
Permit Number - TC-COM-1223-02914
Review Name: COMMERCIAL REVIEW - FULL v.2
Review Status: Requires Resubmit
| Review Date | Reviewer's Name | Type of Review | Description | Status | Comments |
|---|---|---|---|---|---|
| 03/12/2025 | Bldg Permits - Post Review Express | PENDING ASSIGNMENT | |||
| 03/12/2025 | Commercial Mechanical Standard | REQUIRES RESUBMIT | Mechanical(M) Reviewer Jorge Valido jvalido@safebuilt.com Denied Reason: Date Completed : 3/12/2025 10:21:43 AM 1. Condition - As per Revision Narrative Letter M001 and M002 - Many of the buildings mechanical systems are updated or reconfigured • Reference sheet M001 note that mechanical suppliers were unable to provide information on new equipment, so the updates on M001 show current refrigerant equipment of the correct sizing, type, and configuration. Mechanical subcontractor will need to identify substitutions for equipment using new refrigerant once available. When the information becomes available, provide revision. Show in revision all Design equipment information. i. Refrigerant R454B is a A2L type refrigerant. This refrigerant is regulated by ASHRAE 15 and ASHRAE 34. Provide calculations as required by ASHRAE 15 and ASHRAE 34. Provide protection, (rated Shafts) ventilation (natural or mechanical), monitoring (detectors) where and when required by ASHRAE 15 and ASHRAE 34. If applicable provide all this information and details on the Mechanical plans. - 2018 IECC Section C103.2Information on construction documents. - 2018 IBC Section [A]107.2.1Information on construction documents. ▪ City of Tucson ▪ Administrative Policy ▪ Policy Number: 2025.01-IE ▪ Effective Date: January 1, 2025 ▪ Revision Dates: N/A ▪ Policy Title: Alternative Refrigerants ▪ Applicable Code Sections: International Mechanical Code Chapter 11 ▪ International Residential Code Chapter 14 ▪ Purpose: To establish a common set of regulations for the design and installation of cooling systems utilizing alternative refrigerants as mandated by the United States Environmental Protection Agency (EPA). ▪ Policy: Cooling systems may be designed and installed in accordance with the currently adopted International Mechanical Code (or International Residential Code as applicable) or the most current edition of ANSI/ASHRAE 15 with the companion standard ANSI/ASHRAE 34. ▪ Background: On October 24, 2023, the EPA published a final rule restricting the production and use of hydrofluorocarbon (HFC) refrigerants for residential and light commercial heating ventilation and air conditioning (HVAC) systems through the Technology Transitions Program. The rule, as originally issued, placed restrictions on both the manufacture and installation of HVAC products and systems beginning on January 1, 2025, utilizing HFC refrigerants. Alternative refrigerants that meet these new requirements are also new to the building and mechanical codes. While the newest building safety standards address how systems using these new refrigerants must be designed and installed, local authorities having jurisdiction (AHJ) may not have the new regulations adopted or implemented yet. For local AHJs to continue using their existing building safety codes, an option is needed for the refrigeration sections of those codes. ▪ Process: Permit applicants seeking to use alternative refrigerants that are not identified in the adopted building safety codes shall declare the use of ANSI/ASHRAE 15 with the companion standard ANSI/ASHRAE 34 for refrigerant system designs on permit application and/or the construction documents prior to submitting a permit application. ▪ Additional EPA Links: ▪ https://www.epa.gov/climate-hfcs-reduction/frequent-questions-phasedown-hydrofluorocarbons ▪ https://www.epa.gov/climate-hfcs-reduction/background-hfcs-and-aim-act ▪ https://www.epa.gov/climate-hfcs-reduction/technology-transitions |
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| 03/11/2025 | PDSD Application Completeness Express | REVIEW COMPLETED |