CSR 45-21-28. Petroleum Liquid Storage in Fixed Roof Tanks

§45-21-28. Petroleum Liquid Storage in Fixed Roof Tanks. 28.1. Applicability. a. This section 28. applies to any fixed roof petroleum liquid storage tank with a capacity greater than 150,000 liters (L) (40,000 gallons [gal]). b. This section 28. does not apply to any petroleum liquid storage tank that: 1. Has a capacity of less than 1,600,000 L (420,000 gal) and is used to store produced crude oil and condensate prior to lease custody transfer; 2. Is a horizontal underground storage tank used to store JP-4 jet fuel; or 3. Contains a petroleum liquid with a maximum true vapor pressure less than 10.5 kiloPascals (kPa) (1.5 pounds per square inch atmospheric [psia]), provided that records are maintained consistent with section 28.5.b. 28.2. Definitions. -- As used in this section 28., all terms not defined herein shall have the meaning given them in section 2. "Internal floating roof" means a cover or roof in a fixed roof tank that rests upon or is floated upon the petroleum liquid being contained and is equipped with a closure seal or seals to close the space between the roof edge and tank shell. 28.3. Standards. -- No owner or operator of a petroleum liquid storage tank subject to this section 28. shall store petroleum liquid in that tank unless: a. The tank is equipped with: 1. An internal floating roof equipped with a closure seal or seals to close the space between the roof edge and tank wall; or 2. Equally effective alternative control, approved by the Director and the U.S. EPA; b. The tank is maintained such that there are no visible holes, tears, or other openings in the seal or any seal fabric or materials; and c. All openings, except stub drains, are equipped with covers, lids, or seals such that: 1. The cover, lid, or seal is in the closed position at all times except when in actual use; 2. Automatic bleeder vents are closed at all times except when the roof is being floated off or being landed on the roof leg supports; and 3. Rim vents, if provided, are set to open when the roof is being floated off the roof leg supports or at the manufacturer's recommended setting. 28.4. Inspections. -- The owner or operator of a petroleum liquid storage tank with a fixed roof subject to this section 28. shall: a. Perform routine, semi-annual, visual inspections of the internal floating roof and its closure seal or seals through roof hatches; and b. Perform a complete inspection of cover and seal whenever the tank is emptied for non-operational reasons or at least every 5 years, whichever is more frequent. 28.5. Recordkeeping. a. The owner or operator of a petroleum liquid storage tank with a fixed roof subject to this section 28. shall maintain the following records in a readily accessible location for at least 3 years and shall make copies of the records available to the Director upon verbal or written request; 1. Records of the types of petroleum liquids stored in that tank; 2. Records of the maximum true vapor pressure of the liquid as stored; and 3. Records of the results of the inspections required in section 28.4. b. The owner or operator of a petroleum liquid storage tank with a fixed roof exempted from this section 28. by section 28.1.b., but containing a petroleum liquid with a true vapor pressure greater than 7.0 kPa (1.0 psia), shall maintain the following records in a readily accessible location for at least 3 years and shall make copies of the records available to the Director upon verbal or written request: 1. Records of the average monthly storage temperature; 2. Records of the type of liquid stored; and 3. Records of the maximum true vapor pressure for any petroleum liquid with a true vapor pressure greater than 7.0 kPa (1.0 psia). 28.6. Reporting. -- The owner or operator of any facility containing sources subject to this section 28. shall comply with the requirements in sections 5.1. and 5.2.