Publication: Magyar Közlöny
Issue: MK-2011-73 (Year: 2011, Number: 73)
Era: contemporary
Section: 1. melléklet a 2011. évi LXXIX. törvényhez
Paragraph Index: 476

(3) Suitable methods to prevent the control temperature from being exceeded are listed below, in ascending order of effectiveness: R1 Thermal insulation, provided that the initial temperature of the substance(s) is sufficiently below the control temperature; R2 Thermal insulation and coolant system, provided that: - an adequate quantity of non-flammable coolant (e.g. liquid nitrogen or solid carbon dioxide), allowing a reasonable margin for possible delay, is carried or a means of replenishment is assured; - liquid oxygen or air is not used as coolant; - there is a uniform cooling effect even when most of the coolant has been consumed; and - the need to ventilate the transport unit before entering is clearly indicated by a warning on the door(s); R3 Thermal insulation and single mechanical refrigeration, provided that for substances with a flash-point lower than the sum of the emergency temperature plus 5 °C explosion-proof electrical fittings, EEx IIB T3, are used within the cooling compartment to prevent ignition of flammable vapours from the substances; R4 Thermal insulation and combined mechanical refrigeration system and coolant system, provided that: - the two systems are independent of one another; and - the requirements of methods R2 and R3 above are met; R5 Thermal insulation and dual mechanical refrigeration system, provided that: - apart from the integral power supply unit, the two systems are independent of one another; Copyright © United Nations, 2010. All rights reserved - 563 - - each system alone is capable of maintaining adequate temperature control; and - for substances with a flash-point lower than the sum of the emergency temperature plus 5 °C explosion-proof electrical fittings, EEx IIB T3, are used within the cooling compartment to prevent ignition of flammable vapours from the substances.

Source: https://magyarkozlony.hu/hivatalos-lapok/e65da83070944f6e060130c11a7d97386c9ecb3e/dokumentumok/9fc04febd27e033ffdfb106faa0ed404ca797948/letoltes