Section 93.330. Converted tanks for the storage of flammable and combustible liquids.

 

(1)   Application. This section applies to all converted tanks, whether new or existing.

(2)   General installation and use. Converted tanks for the storage of flammable and combustible liquids shall be installed by a certified installer.

(3)   Pressure vessels.

(a) Low-pressure tanks and pressure vessels that are being converted to the storage of flammable or combustible liquids at atmospheric pressure shall meet the applicable tank storage requirements of this chapter, specific to the liquid stored.

(b) Tank supports shall be capable of supporting a static load equal to at least 2 times the weight of the full tank. This capability shall be confirmed by engineering structural analysis, field testing, or by reference to an approved design standard.

(4)   Tank vehicles.

(a) The cargo tank of a tank vehicle that is converted to a stationary tank for the storage of flammable or combustible liquids shall meet the applicable tank storage requirements of this chapter, specific to the liquid stored, along with the requirements in pars. (b) to (d) .

(b) Cargo tanks for permanent stationary use shall be constructed of steel only.

(c) The cargo tank vehicle platform shall be supported off the vehicle wheels and landing gear, and secured against movement, by the use of blocking devices and anchoring mechanisms that are acceptable to the department.

(d) Venting of the cargo tank shall follow the requirements of either NFPA 385 chapter 5 or this chapter.

(5)   General administrative requirements. Converted tanks shall follow the operating requirements of this chapter applicable to their current use.

CR 07-029 : cr. Register November 2008 No. 635 , eff. 2-1-09; CR 09-017 : am. (4) (c) Register July 2009 No. 643 , eff. 8-1-09.