6.6.3.4.4 The equivalent thickness of a steel other than the thickness prescribed for the reference steel in 6.6.3.4.2 shall be determined using the following formula

Shells of more than 1.80 m in diameter shall be not less than 6 mm thick in the reference steel or of equivalent thickness in the steel to be used.

Equivalent thickness in reference steel _ mm

Stamp of expert who performed or witnessed the most recent test _

e1 required equivalent thickness (in mm) of the steel to be used

Minimum shell thickness (mm reference steel) Bottom opening requir ements

thickness (mm reference steel)

eo minimum thickness (in mm) for the reference steel specified in 6.6.3.4.2

6.6.2.4.6 The equivalent thickness of a metal other than the thickness prescribed for the reference steel in 6.6.2.4.3 shall be determined using the following equation

6.6.4.4.6 The equivalent thickness of a metal other than the thickness prescribed for the reference steel in 6.6.4.4.2 and 6.6.4.4.3 shall be determined using the following equation

6.6.3.4.2 The cylindrical portions, ends (heads) and manhole covers of shells of not more than 1.80 m in diameter shall be not less than 5 mm thick in the reference steel or of equivalent thickness in the steel to be used.

eo minimum thickness (in mm) of the reference steel specified in 6.6.4.4.2 and 6.6.4.4.3

Shells of more than 1.80 m in diameter shall be not less than 6 mm thick in the reference steel or of equivalent thickness in the metal to be used.

Shells more than 1.80 m in diameter shall be not less than 4 mm thick in the reference steel or of equivalent thickness in the metal to be used.

6.6.4.4.2 Shells of not more than 1.80 m in diameter shall be not less than 5 mm thick in the reference steel or of equivalent thickness in the metal to be used.

Such shells of more than 1.80 m in diameter shall be not less than 4 mm thick in the reference steel or of equivalent thickness in the metal to be used.

Shells more than 1.80 m in diameter shall be not less than 6 mm thick in the reference steel or of equivalent thickness in the metal to be used, except that for powdered or granular solid substances of Packing Group II or III the minimum thickness requirement may be reduced to not less than 5 mm thick in the reference steel or of equivalent thickness in the metal to be used.

6.6.4.4.3 Shells of vacuum insulated tanks of not more than 1.80 m in diameter shall be not less than 3 mm thick in the reference steel or of equivalent thickness in the metal to be used.

6.6.2.4.2 The cylindrical portions, ends (heads) and manhole covers of shells not more than 1.80 m in diameter shall be not less than 5 mm thick in the reference steel or of equivalent thickness in the metal to be used.

However, shells not more than 1.80 m in diameter shall be not less than 3 mm thick in the reference steel or of equivalent thickness in the metal to be used.

Other relatively dynamic steel product groups include Iron and Steel in its Primary Form (SITC position 672) with growth of 5.7 per cent, and Steel, Steel Universal, Plate and Sheet (SITC position 674), with growth of 5.0 per centTable 2.

When a metal other than mild steel (see 6.6.2.1) is used or the shell has a diameter of more than 1.80 m, the thickness shall be determined using the following equation

6.6.2.4.7 When in the applicable portable tank instruction in 4.2.4.2.6, a minimum thickness of 8 mm, 10 mm or 12 mm is specified, it shall be noted that these thicknesses are based on the properties of the reference steel and a shell diameter of 1.80 m.

6.6.4.4.4 For vacuum insulated tanks, the aggregate thickness of the jacket and the shell shall correspond to the minimum thickness prescribed in 6.6.4.4.2, the thickness of the shell itself being not less than the minimum thickness prescribed in 6.6.4.4.3.

Thickness

TP12 Highly corrosive to steel.

Reference steel means a steel with a tensile strength of 370 N mm2 and an elongation at fracture of 27

L thickness of insulation layer m

L thickness of insulation layer m

6.6.2.4 Minimum shell thickness

6.6.3.4 Minimum shell thickness

6.6.4.4 Minimum shell thickness

(ii) is approximately of the same size and mass as the existing equipment and

This thickness shall be exclusive of any corrosion allowance.

The thickness of aluminium liner is 2.1 mm.

It's created depositing layers of about four microns.

(a) the minimum thickness determined in accordance with the requirements in 6.6.3.4 and

4.2.4.2.2 For substances of Classes 3 to 9, the portable tank instructions (T1 T34) indicate the applicable minimum test pressure, the minimum shell thickness (in reference steel), bottom opening requirements and pressure relief requirements.

(a) the minimum thickness determined in accordance with the requirements of 6.6.2.4.2 to 6.6.2.4.10

e1 required equivalent thickness (in mm) of the metal to be used

(a) the minimum thickness determined in accordance with the requirements in 6.6.4.4.2 to 6.6.4.4.7 and

In the steel factory.

Steel production and use have some advantages from an environmental point of view.

6.6.2.4.3 When additional protection against shell damage is provided, portable tanks with test pressures less than 2.65 bar, may have the minimum shell thickness reduced, in proportion to the protection provided, as approved by the competent authority.

A pen?