41. Precaution against dust, noxious gas, fumes and other impurities.- The employer of every dock work shall ensure that: -

(i) whenever a dock worker is required to enter into a hold or intermediate deck or other confined space or any other working place where neither natural ventilation nor mechanical ventilation system is adequate to keep the content of any gas, fume vapour or dust below the permissible limits, appropriate manhole of adequate size or other effective means of egress shall be provided to avoid exposure of docks workers to health hazards;

(ii) no dock worker is allowed to enter any hold or tank of a vessel wherein there is given off any dust, fumes or other impurities of such a nature and to such an extent as is likely to be injurious or offensive to the dock workers or in which explosives, poisonous, noxious or gaseous cargoes have been carried or stored or in which dry ice has been used as a refrigerant or which has been fumigated, or in which there is possibility of oxygen deficiency, unless all practical steps have been taken to remove the dust, fumes or other impurities and dangers which may be present and to prevent any further ingress thereof and such holds or tanks are certified to be safe and fit for dock workers to enter the same by the competent person;

(iii) when dock workers are exposed to any dust in substantial quantities as in handling bulk cargos such as grains, fertilizers, cements and other similar cargoes, they are protected by appropriate Personal Protective Equipment, provided free of charge.