This Code of Practice gives guidance to users of fully enclosed askarel-filled electrical equipment. National and Local Authority regulations (if any) take priority. This Code of Practice is applicable to fully enclosed electrical equipment which is designed to be filled with askarels: i.e. askarel-filled electrical equipment. This Code of Practice is applicable to electrical equipment which contains more than five litres of askarels. This Code of Practice gives guidance on the precautions to be observed to avoid pollution of the environment by the correct installation, maintenance, operation, storage and transportation of askarel-filled electrical equipment. This Code of Practice gives guidance on the safety precautions to be taken when handling askarels, the disposal of askarel-contaminated waste and on the retrofilling of transformers with an acceptable replacement liquid.