How Does an Occupier know that which provision/ rules are applicable to his factory under MSIHC Rules 1989

 If one of the operations or processes listed in Schedule 4 is carried out in a factory involving one or more hazardous chemicals, an occupier has to first ascertain the category to which his factory belongs i.e. whether the factory comes under lower-tier, middle-tier or higher-tier because the requirements/ provisions are different for different categories of factories .


The three categories of factories are given below 


Lower-tier Factory

Factories wherein an operation/process given in Schedule 4 is carried out involving one or more chemicals which satisfies any of the criteria laid down in Part I of Schedule I and/or listed in Column 2 of Part II of Schedule I irrespective of quantity of hazardous chemicals stored inside the factory, fall under this category.


Middle-tier Factory

Factories wherein an operation/process given in Schedule 4 is carried out involving one or more chemicals in quantities equal to or more than the quantity given in Column 3 of Schedule 2, fall under this category


Higher -tier Factory 

Factories wherein an operation/process given in Schedule 4 is carried out involving one or more chemicals in quantities equal to or more than the quantity given in Column 4 of Schedule 2, fall under the category