Criterion 6.1.3.1 Tank Design Requirements

Criterion text:
Both pressurized and non-pressurized tanks shall meet the requirements set by a nationally accepted standard setting organization.

Non-pressurized tanks shall be vented to atmospheric pressure.

Non-Fiberglass hot water storage tanks shall comply with ASME Boiler and Pressure Vessel Code, Division 1, Section VIII, “Rules for Construction of Pressure Vessels” unless they fall into one of the classes of vessels exempted in Part U-1(c) .

Fiber-reinforced plastic pressure vessels shall comply with ASME Boiler and Pressure Vessel Code, Section X, “Fiber-Reinforced Plastic Pressure Vessels” unless they fall into one of the classes of vessels exempted in Part RG-121.

Comments:
Determination of this is done during the certification review, therefore, the installer must use the exact tanks specified in the manufacturer's SRCC approved installation manual.

Tanks are exempt if they are less than or equal to 120 gallons and below the limit for electrical input.

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