SCHEDULE XXI Manufacturing process or operations in carbon-di-sulphide plants 1. Application.- This schedule shall apply to all electric furnaces in which carbon-di-sulphide is generate and all other plants where carbon-di-sulphide after generation, is condensed, refined and stored. This schedule is in addition to and not in derogation of any of the provisions of the Act and Rules made thereunder. 2. Construction, installation and operation.- (1) The buildings in which electric furnaces are installed and carbon-di-sulphide after generation is condensed and refined shall be segregated from other parts of the factory and shall be of open type to ensure optimum ventilation and the plant layout shall be such that only a minimum number of workers are exposed to the risk of any fire or explosion at anyone time. (2) Every electric furnace and every plant in which carbon-di-sulphide is condensed, refined and stored with all their fittings and attachments shall be of good construction, sound material and of adequate strength of sustain the internal pressure to which the furnace of the plant may be subjected to and sail be so designed that carbon-di-suphide liquid and gas are in closed system during their normal working. (3) The electric furnace supports shall be firmly grouted about 60 centimeters in concrete or by other effective means. (4) Every electric furnace shall be installed and operated according to manufacturers instructions and these instructions shall be clearly imparted to the personnel incharge of construction and operations. (5) The instructions regarding observance of correct furnace temperature, sulphur dose, admissible current or power consumption and periodical checking of charcoal level shall be strictly complied with. 3. Electrodes-\I) Where upper ring electrodes made of steel are use in the electric furnace, they shall be of seamless tube construction and shall have arrangement for being connected to cooling water system through a siphon but in the electrodes or through a positive pressure water-pump. (2) The arrangement for cooling water referred to in sub-paragraph (1) shall be connected with automatic alarm system which will actuate in the event of interruption of cooling watering the electrodes and give visible and audible alarm signals in the control room and simultaneously stop power supply for the fur ace operation and to stop the further supply of water. The alarm system and the actuating device shall be checked every day. 4. Maintenance of charcoallevel.- When any electric furnace is in operation, it shall be ensured that the electrodes are kept covered with charcoal bed. 5. Charcoal separator.- A cyclone type of charcoal separator shall be fitted on the off take pipe between the electric furnace and sulphur separator to prevent entry of pieces of charocal into the condensers and piping. 6. Rupture discs and safety seal.- (1) At least two rupture discs of adequate size which shall blow off at a pressure twice the maximum operating pressure shall be provided on each furnace and shall either be mounted directly on the top o the furnace or each through an independent pipe as close as possible to the furnace. (2) A safety water seal shall be provided and tapped from a point bet the charcoal separator and the sulphur separator. 7. Pyrometer and manometers.- (1) Each electric furnace shall be fitted with adequate number of pyrometers to give an indication of the temper as correctly as reasonably practicable at various points in the furnace.The did for reading the temperatures shall be located in the control room. (2) Manometers or any other suitable devices shall be provided for indicate pressure- in the off take pipe before and after the sulphur separator; and (b) in primary and secondary condensers. 8. Check Valves.- All piping carrying carbon-di-sulphide shall be fitted with check valves at suitable positions so as to prevent gas from flowing back into any electric furnace in the event of it a shut down. 9. Inspection and maintenance of electric furnaces.- (1) Every electric furnace shall be inspected internally by a competent person- (a) before being placed in service after installation; (b) before being placed in service after reconstruction or repairs; and (c) periodically every time the furnace is opened for cleaning or dashing or for replacing electrodes. (2) When an electric furnace is shut down for cleaning or dashing- (a) the brick lining shall be checked for continuity and any part found defective removed; (b) after removal of any part of the lining referred to in (a) the condition of the shell shall be closely inspected; and (c) any plates forming shell found corroded to the extent that safety of the furnace is endangered shall be replaced. 10. Maintenance of records.- The following hourly records shall be maintained in a log book- (a) Manometer readings at the points specified in sub-paragraph 7(2); (b) gas temperature indicated by pyrometers and all other vital points near the sulphur separator and primary and secondary condensers; (c) water temperature and flow of water through the siphen in the electrodes; and (d) primary and secondary voltages and current and energy consumed. 11. Electrical apparatus, wiring and fittings.- All bu.ildi11gs in which carbon-di-suphide is refined or stored shall be provided with electrical apparatus, wiring and fittings which shall afford adequate protection from fire and explosion. 12. Prohibition relating to smoking.- No person shall smoke or carry matchetes, fire or naked light or other means of producing a naked lightor spark in buildings in which carbon-di-sulphide is refined or stored, and a notice in the language understood by a majority of the workers shall be pasted in the plant prohibiting smoking and carrying of matches, fire or naked light or other means of producing naked light or spark into such rooms. 13. Means of escape..- Adequate means of escape shall be provided and maintained to enable persons to move to a safe place as quickly as possible in case of any emergency. At least two independent staircases of adequate with shall be provided in every building housing the furnaces at reasonable intervals at opposite ends. These shall always be kept clear of all obstructions and so designed as to afford easy passage. 14. Warnings in case of fire..- There shall be adequate arrangements for giving warnings in case of fire or explosion which shall operate on electricity and in case of failure of electricity by some mechanical means. 15. Fire fighing equipment.- (1) Adequate number of suitable fire extinguishers or other fire-fighting equipment shall be kept in constant readiness for dealing with risks involved and depending on the amount and nature materials stored. (2) Clear instructions as to how the extinguishers or other equipment should be used printed in the language which the majority of the workers employed understand shall be affixed to each extinguishers or other equipment and the personnel trained in their use. 16. Bulk sulphur.- (1) Open or semi-enclosed spaces for storage of bulk sulphur shall be sited with due regard to the dangers which may arise from sparks given off by nearby locomotives, etc. and precautions shall be taken to see that flames, smoking and matches and other sources of ignition do not come in contact with the clouds of dust arising during handling of bulk sulphur. (2) All encloures for bulk sulphur shall be non-combustible construction adequately ventilated and so designed as to provide a minimum of lodges on which dust may lodge. (3) The bulk sulphur in the enclosures shall be handled in such a manner to minimise the formation of dust clouds and no flame, smoking and matches or other sources of ignition shall be employed during handling and non-sparking tools shall be used whenever sulphur is shoveled or otherwise removed by him. (4) No repairs involving flames, heat or use of hand or power tools shall be made in the enclosure where bulk sulphur is stored. 17. Liquid sulphur.- Open flames; electric sparks and other sources of ignition, including smoking and matches shall be excluded from the vicinity of molten sulphur. 18. Training and supervision.- (1) All electric furnaces and all plants in which carbon-di-sulphide is condensed, refined or stored shall be under adequate supervision at all times while the furnaces and plant are in operation (2) Workers incharge of operation and maintenance of electric furnaces the plants shall be properly qualified and adequately trained. 19. Washing facilities.- (1) The occupier shall provide and maintain in a clean state and in repair, for the use of all persons employed, wash place under cover with at least one tap or stand pipe, having a constant supply of clean was for every five such persons, the taps or stand-pipes being spaced not less than 12O centimeters apart with a sufficient supply of soap and clean towels Provided that towels shall be supplied individually to each worker if so ordered by the Inspector. (2) All the workers employed in the sulphur storage, handling and melting operations shall be provided with nail brush. 20. Personal protective equipment.- (1) Suitable goggles and protective clothing consisting of overall without pockets, gloves and foot, wear shall be provided for the use of operatives- (a) when operating valves or cocks controlling fluids etc; (b) drawing off of molten sulphur pots; and (c) handling charcoal or sulphur. (2) Suitable respiratory protective equipment shall be provided and stored in the appropriate place for use during abnormal conditions or in an emergency. (3) Arrangements shall be made for proper and efficient. cleaning of all such Protective equipment. 21. Cloak-rooms.- There shall be provided and maintained for the use of all persons employed in the proceses a suitable cloak-room for clothing put off during work hours and a suitable place separate from the cloak-room for the storage or overalls or working clothes. The accommodation so provided shall be placed in the charge of a responsible person and shall be kept clean. 22. Unauthorised persons.- Only maintenance and repair personnel, persons directly connected with the plant operation and those accompanied by authorised persons shall be admitted into the plant. | 
