Tenn. Comp. R. & Regs. 1200-03-18-.29 - PETROLEUM LIQUID STORAGE IN FIXED ROOF TANKS

(1) Applicability of this rule is as follows:

(a) This rule applies to any fixed roof petroleum liquid storage tank with a capacity greater than 150,000 liters (L) (40,000 gallons [gal]).

(b) This rule 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 Subparagraph (5)(b) of this rule.

(2) For the purpose of this rule, "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.

(3) No owner or operator of a petroleum liquid storage tank subject to this rule 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. An equally effective alternative control, approved as a revision to the State Implementation Plan.

(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.

(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.

(4) The owner or operator of a petroleum liquid storage tank with a fixed roof subject to this rule 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 the cover and seal whenever the tank is emptied and degassed or at least every 10 years, whichever is more frequent. To qualify for the 10 year inspection interval, the primary seal must be either a liquid-mounted or mechanical shoe primary seal. Otherwise if the above mentioned controls are not in place, a complete inspection of the cover and seal must be performed whenever the tank is emptied and degassed or at least every 5 years, whichever is more frequent.

(5) Recordkeeping requirements apply as follows:

(a) The owner or operator of a petroleum liquid storage tank with a fixed roof subject to this rule shall maintain the following records for at least 3 years and shall make copies of the records available to the Technical Secretary upon request:

1. Records of the types of volatile 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 Paragraph (4) of this rule.

(b) The owner or operator of a petroleum liquid storage tank with a fixed roof exempted from this rule by Subparagraph (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 for at least 3 years and shall make copies of the records available to the Technical Secretary upon 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).

(6) The owner or operator of any facility containing sources subject to this rule shall comply with the requirements in Paragraphs .04(1) and (2) of this chapter.

Notes

Tenn. Comp. R. & Regs. 1200-03-18-.29

Original rule filed May 15, 1979; effective July 10, 1979. Amendment filed March 23, 1981; effective May 1, 1981. Amendment filed April 23, 1992; effective June 7, 1992. Repeal and new rule filed March 8, 1993; effective April 22, 1993. Amendment filed May 25, 2011; effective August 23, 2011.

Authority: T.C.A. §§ 4-5-201 et seq.,4-5-202, 68-201-101 et seq., and 68-201-105.