Publication: Magyar Közlöny
Issue: MK-2011-73 (Year: 2011, Number: 73)
Era: contemporary
Section: 1. melléklet a 2011. évi LXXIX. törvényhez
Paragraph Index: 464

1. For shells with a circular or elliptical cross-section having a maximum radius of curvature of 2 m, the shell is equipped with strengthening members comprising partitions, surge-plates or external or internal rings, so placed that at least one of the following conditions is met: - Distance between two adjacent strengthening elements of not more than 1.75 m. - Volume contained between two partitions or surge-plates of not more than 7 500 l. The vertical cross-section of a ring, with the associated coupling, shall have a section modulus of at least 10 cm3. Where the tanks are made with double walls, the space between being evacuated of air, the aggregate thickness of the outer metal wall and the shell wall shall correspond to the minimum wall thickness prescribed in 6.8.2.1.18, the thickness of the wall of the shell itself being not less than the minimum thickness prescribed in 6.8.2.1.19. Where tanks are made with double walls with an intermediate layer of solid materials at least 50 mm thick, the outer wall shall have a thickness of not less than 0.5 mm if it is made of mild steel 3 or at least 2 mm if it is made of a plastics material reinforced with glass fibre. Solid foam with an impact absorption capacity such as that, for example, of polyurethane foam, may be used as the intermediate layer of solid material. External rings shall not have projecting edges with a radius of less than 2.5 mm. Partitions and surge-plates shall conform to the requirements of 6.8.2.1.22. The thickness of the partitions and surge-plates shall in no case be less than that of the shell.

Source: https://magyarkozlony.hu/hivatalos-lapok/9c37029b82ff10daf735a1dfc29db4694df99b65/dokumentumok/6f4b184d139114908c1f77b1d4be8502803c7c90/letoltes