Daily Code Talk #9 – IMC Section 109: Service Utilities

🧠 Plain English Breakdown•Connection requires authorization (109.1): No one may connect gas, power, water, or other utilities to IMC-regulated systems until the code official authorizes it.•Temporary connection (109.2): The code official may allow temporary utility service for testing/commissioning or limited temporary use. Get it in writing.•Authority to disconnect (109.3): The code official may shut off utilities in an emergency or if a system was connected without approval. They’ll notify the utility and, when possible, the owner/agent/occupant before disconnecting (or as soon as practical after).🏗️ Why It Matters in Design & ConstructionUnauthorized energization is a fast track to stop-work, penalties, and safety incidents (think unvented startup, raw-gas leaks, live equipment without clearances). Plan your commissioning sequence and utility releases so testing is legal, safe, and documented—and so an emergency disconnect doesn’t delay your schedule.🔧 Field TipBefore you energize anything:1. Inspection path: Pass required inspections and get written AHJ authorization (temporary or final).2. Utility release: File the utility’s service release form; align meter set / power-on dates with your commissioning plan.3. Controls & LOTO: Verify controls/safeties are active; use lockout–tagout for partial energization.4. Emergency plan: Post shutoff locations (gas/electric/water), notify the GC and owner, and assign a single point of contact during testing.If you want a 1-page Utility Energization Checklist (AHJ release + utility forms + commissioning gates), comment “UTILITY” and I’ll send it.Daily Code Talk #10 – IMC Section 110: Temporary Uses, Equipment & Systems🧠 Plain English Breakdown•Permit & duration (110.1): Temporary uses/equipment/systems require a permit and are time-limited (max 180 days); extensions allowed for cause.•Conformance (110.2): “Temporary” ≠ “anything goes.” Installations must meet the IMC to the extent needed for health, safety, and welfare.•Temporary utilities (110.3): AHJ may authorize temporary service utilities (see Section 109).•Termination (110.4): AHJ can terminate and order discontinuance if unsafe, noncompliant, or beyond scope/time.🏗️ Why It Matters in Design & ConstructionTemp heat/cool, negative air, construction dehumidification, temp boilers/chillers, or generators are often critical to schedule—but the AHJ can pull the plug if they’re not permitted, safe, or properly vented. Plan the temporary system like you would a permanent one: combustion air and venting/clearances, electrical capacity and OCPD, fuel storage and CO/NOx control, make-up air for negative pressure, and removal/restore at the end.🔧 Field TipSubmit a 1-page temporary plan with your permit request:1. Purpose & duration (start/end, requested extension trigger).2. Equipment & fuel (models, input, listing, MI pages).3. Life safety (venting path, clearances, CO monitors, make-up air, spill/containment).4. Power (source, feeder/OCPD, GFCI where required).5. Controls & supervision (lockout/tagout, daily check log, shutdown criteria).6. Decommissioning (removal, patching, firestop restoration, cleaning). Coordinate temporary utility authorization with the AHJ before energizing.If you’d like my Temporary Systems Playbook (1-page) for submittals and site checks, comment “TEMP” and I’ll share it.