Regulation 233(1) The manager of a gold processing plant shall in relation to that processing plant ensure that(a) trained and competent personnel are responsible for the general usage of cyanide in the plant to prevent the exposure of production personnel, public and the environment to harm from the cyanide;(b) the use of cyanide is controlled by safe working practices and procedures which include(i) the use of proven methods by a trained and competent person to determine whether working areas are safe;(ii) the issuing of correctly authorised Hot Work Clearance and Permit to Work;(iii) compliance with safety precautions;(iv) the use of approved respiratory and other personal protective equipment as specified in the Hot Work Clearance and Permit to Work;(v) the control of hazards resulting from cyanide, cyanide gases and cyanide reaction products;(vi) a description of the first aid equipment to be used;(vii) emergency rescue procedures;(viii) methods for cyanide leakage and spillage control;(ix) cyanide decontamination methods;(c) any work performed on equipment or facilities containing cyanide and any operational task performed on or close to that equipment or those facilities are performed only by a trained person;(d) additions or modifications to working procedures, practices, standards and installed cyanide handling, storage equipment, reticulation, sampling and analytical measurement equipment are subject to a risk assessment prior to the implementation of the proposed addition or modification; and(e) working areas suspected of containing cyanide or cyanide reaction products are monitored and equipped with suitable cyanide gas detection systems in order to warn personnel when the occupational exposure limit of 10 ppm is exceeded.(2) A person shall not enter or work or be permitted by a manager of a gold processing plant to enter or work in any tank, vessel, pipeline, confined space or poorly ventilated area in that processing plant unless the concentration of cyanide, cyanide gases and cyanide reaction products is declared safe for work by a suitably trained and competent person.(3) The manager of a gold processing plant shall in relation to that processing plant ensure that(a) a person in the processing plant is not permitted to eat, drink or smoke in a cyanide working area, or while working with cyanide or cyanide reaction products;(b) cyanide pipelines and storage tanks comply with the specified colour coding detailed in 231(g)(v) and that the colour coding and labelling are maintained to ensure proper visual identification;(c) cyanide spillages are cleaned up immediately in accordance with developed procedures;(d) suitable protective clothing are always worn when work is performed on or in the vicinity of any cyanide containing equipment or facility; (e) operational procedures ensure that a pH of greater than 10.5 is maintained in process streams and circuits at all times to prevent the decomposition of cyanide to hydrogen cyanide gas;(f) cyanide solutions are used only for the dissolution of gold in slurry streams, gold precipitation circuits, gold elution processes, carbon activity analyses and laboratory applications by competent personnel;(g) acid washing and eluting of loaded carbon is not performed in the same column;(h) an acid neutralisation step ensures that conditioned carbon is delivered back to the process at a pH in excess of 10.5. and spent acidic solutions are neutralised and transferred back into the process stream at a point where the pH is in excess of 10.5 and where there is a pH monitoring and alarm facility;(i) cyanide is added to the metallurgical process in the correct amounts required for proper and effective dissolution of gold particles; and(j) systems are in place to effectively control process parameters, including pH and cyanide control, and that these systems are calibrated on a regular basis to ensure safe operation of the plant.