(v) 3704.2.2.5 Piping and Controls
In addition to the requirements of paragraph (C)(2)(b)(2703.2.2) of rule 1301:7-7-27 of the Administrative Code, piping and controls on stationary tanks shall comply with the following requirements:
(a) Pressure relief devices shall be vented to a treatment system designed in accordance with paragraph (D)(2)(b)(vii)(3704.2.2.7) of this rule.
Exception: Pressure relief devices on outdoor tanks provided exclusively for relieving pressure due to fire exposure are not required to be vented to a treatment system provided that:
- The material in the tank is not flammable.
- The tank is not located in a diked area with other tanks containing combustible materials.
- The tank is located not less than 30 feet (9144 mm) from combustible materials or structures or is shielded by a fire barrier complying with paragraph (D)(3)(b)(i)(a)(3704.3.2.1.1) of this rule.
(b) Filling or dispensing connections shall be provided with a means of local exhaust. Such exhaust shall be designed to capture fumes and vapors. The exhaust shall be directed to a treatment system in accordance with paragraph (D)(2)(b)(vii)(3704.2.2.7) of this rule.
(c) Stationary tanks shall be provided with a means of excess flow control on all tank inlet or outlet connections.
- Inlet connections designed to prevent backflow.
- Pressure relief devices.