Propane storage in Knox County is governed by the adopted 2018 International Fire Code and NFPA 58. Small residential grill cylinders are unrestricted, but larger tanks have quantity limits, clearance, and permit requirements enforced by the county Fire Prevention Bureau.
Knox County enforces the 2018 International Fire Code (Chapter 61) and, through it, NFPA 58 for liquefied petroleum (LP) gas. Portable barbecue cylinders (typically 20 lb) for home grilling are allowed without a permit. Larger stationary tanks and aggregate storage above code thresholds require an operational permit and must meet setback distances from buildings, property lines, and ignition sources based on tank capacity. The fire code also limits storing LP-gas cylinders inside or near residential occupancies and restricts operating LP-gas grills on combustible balconies of multi-family buildings. Installation of a permanent propane tank is inspected by the Knox County Fire Prevention Bureau and Codes Administration.
Improper LP-gas storage or installation without required permits is a fire-code violation corrected by the fire marshal; unsafe conditions can be ordered abated.
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See how Knox County's propane storage rules stack up against other locations.
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