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APPENDIX B 301 184.108.40.206 When an insulated conductor is used to bond electrical components and devices, it should show a continuous green colour, with or without a yellow stripe. 4 Operating requirements 4.1 The incinerator system should be designed and constructed for operation with the following conditions: Maximum combustion chamber flue gas outlet temperature 1,200Â°C Minimum combustion chamber flue gas outlet temperature 850Â°C Pre-heat temperature of combustion chamber 650Â°C For batch-loaded incinerators, there are no pre-heating requirements. However, the incinerator should be so designed that the temperature in the actual combustion space reaches 600Â°C within 5 min after start. Pre-purge, before ignition: at least four air changes in the chamber(s) and stack, but not less than 15 s Time between restarts: at least four air changes in the chamber(s) and stack, but not less than 15 s Post-purge, after shutoff fuel oil: not less than 15 s after the closing of the fuel oil valve Incinerator discharge gases: Minimum 6% O2 . 4.2 Outside surfaces of combustion chamber(s) should be shielded from contact such that people in normal work situations are not exposed to extreme heat (20Â°C above ambient temperature) or direct contact with surface temperatures exceeding 60Â°C. Examples of alternatives to accomplish this are a double jacket with an air flow in between or an expanded metal jacket. 4.3 Incinerating systems are to be operated with underpressure (negative pressure) in the combustion chamber such that no gases or smoke can leak out to the surrounding areas. 4.4 The incinerator should have warning plates attached in a prominent location on the unit, warning against unauthorized opening of doors to combustion chamber(s) during operation and against overloading the incinerator with garbage. 4.5 The incinerator should have instruction plate(s) attached in a prominent location on the unit that clearly addresses the following: