The Carriage of Dangerous Goods by Road Regulations 1996

Organic peroxides

8.—(1) Appropriate measures shall be taken to ensure that any control temperatures for organic peroxides are not exceeded.

(2) Where there is a prescribed temperature in relation to particular organic peroxides measures shall be taken to ensure that that temperature is maintained during carriage, including—

(a) thorough inspection of the transport unit prior to loading;

(b) instructions to the driver about the operation of the refrigeration system including a list of the suppliers of coolant available en route;

(c) instructions to the driver on the safety measures to be taken in the event of loss of control;

(d) regular monitoring of operating temperatures; and

(e) provision of a back-up refrigeration system or spare parts.

(3) Additional measures shall also be taken to ensure that—

(a) any control and temperature sensing devices in the refrigeration system are readily accessible and all electrical connections are weather-proof;

(b) the temperature of the air space within the transport unit is measured by two independent sensors and the output is so recorded that temperature changes are readily detectable;

(c) the temperature is checked every four to six hours and logged;

(d) where goods having a control temperature of less than 25°C are carried, the vehicle is equipped with visible and audible alarms which are—

(i) powered independently of the refrigeration system, and

(ii) set to operate at or below the control temperature;

(e) where the control temperature is exceeded during carriage, an alert procedure is initiated involving—

(i) any necessary repairs to the refrigeration equipment, or

(ii) an increase in the cooling capacity by adding liquid or solid coolant;

(f) there is frequent checking of the temperature and preparations for implementation of the emergency measures; and

(g) where the emergency temperature is reached, the safety measures are set in operation.

(4) In order to determine the suitability of a particular means of temperature control for carriage the following factors shall be considered—

(a) the control temperature of the goods to be carried;

(b) the difference between the control temperature and the anticipated ambient temperature conditions;

(c) the effectiveness of the thermal insulation;

(d) the duration of carriage; and

(e) the allowance of a safety margin for delays.

(5) Suitable methods for preventing the control temperature being exceeded are, in order of increasing capability—

(a) thermal insulation provided that the initial temperature of the organic peroxide is sufficiently below the control temperature;

(b) thermal insulation and coolant system provided that—

(i) an adequate quantity of non-flammable coolant such as liquid nitrogen or solid carbon dioxide, allowing a reasonable margin for possible delay, is carried or a means of replenishment is assured,

(ii) liquid oxygen or air is not used as coolant,

(iii) there is a uniform cooling effect even when most of the coolant has been consumed; and

(iv) the need to ventilate the transport unit before entering is clearly indicated by a warning on every door;

(c) thermal insulation and single mechanical refrigeration, provided that flameproof electrical fittings are used within the coolant compartment to prevent ignition of flammable vapours from the organic peroxides;

(d) thermal insulation and combined mechanical refrigeration system and coolant system, provided that—

(i) the two systems are independent of one another, and

(ii) the provisos specified in paragraphs (b) and (c) above are satisfied;

(e) thermal insulation and dual mechanical refrigeration system provided that—

(i) apart from the integral power supply unit, the two systems are independent of one another,

(ii) each system alone is capable of maintaining adequate temperature control, and

(iii) flameproof electrical fittings are used within the coolant compartment to prevent ignition of flammable vapours from the organic peroxides.