Sec. 599.11. Installation of aboveground tank systems

(a) Foundation design.

(1) New aboveground tanks must have a stable and well drained foundation, footing and structural support which are capable of supporting the total weight of the tank when full. Supports, foundations and anchorage of all tanks must be in accordance with NFPA No. 30, sections 2-6.1, 2-6.2, 2-6.3, 2-6.4 and 2-6.5 (see section 598.1[j] of this Title).

(2) Horizontal aboveground tanks must be supported in such a manner as to permit expansion and contraction and to prevent the concentration of excessive loads on the supporting portion of the shell. The bearing afforded by the saddles must extend over at least 1/3 of the circumference of the shell. If bearing of less than 1/3 is used, the design must be approved by a qualified engineer and be documented or referenced in the spill prevention report. Suitable means for preventing corrosion must be provided on that portion of the tank in contact with the foundations or saddles.

(3) Tank systems that are exposed to temperatures of less than 32 degrees Fahrenheit must be supported in such a way, or supplied with heat, to prevent the effects of freezing and frost heaving of the foundation.

(b) Avoiding traffic hazards.

New aboveground tank systems must be protected from physical damage that may result from moving machinery or vehicles, such as forklifts, automobiles or trucks.

(c) Separation of incompatible substances.

All new aboveground tanks must assure separation of incompatible substances. One means of accomplishing this separation is by installing separate independent secondary containment systems capable of preventing the mixing of the incompatible substances in the event of a leak, spill or overfill.

(d) Emergency response equipment.

All new aboveground tank systems and dikes must be accessible by fire fighting and other emergency response equipment.

(e) Inspection of tank systems.

(1) Prior to placing a tank system in use, the tank system must be inspected by a qualified inspector for the presence of any of the following items:

(i) weld breaks;

(ii) punctures;

(iii) scrapes of protective coatings;

(iv) cracks;

(v) corrosion;

(vi) structural damage; and

(vii) improper installation.

(2) In addition to the above, tank systems must be tested for tightness and inspected in accordance with a consensus code, standard or practice developed by a nationally recognized association or independent testing laboratory which meets the standards of this section such as API 650 or API 620. (See section 598.1[j] of this Title). If a pneumatic test is used, all fittings, welds and joints must be coated with a soap solution and inspected for air leaks.

(3) If a tank system is found to be leaking or the tank or installation is deficient such that a leak is possible, the owner or operator must repair the system prior to the tank system being placed in use.

(4) Upon completion of the test and inspection, the inspector must sign and date a statement certifying that the system meets the standards of this Part.

(5) The inspector's statement and records of the test and repairs must be kept for five years following the date of installation and made part of the spill prevention report.

(f) Qualifications of tank system installers.

Installation of an aboveground tank system must be performed by a qualified installer or technician who is trained in the methods of installing aboveground tank systems.

(g) Manufacturer's instructions.

In addition to the above requirements, all tank systems must be installed in strict accordance with manufacturer's instructions.