Contents of the OSH Rules (Mizoram)

The Mizoram Occupational Safety, Health and Working Conditions Rules, 2026

Schedule XII

Made under The Occupational Safety, Health and Working Conditions Code, 2020No. B-11011/12/2026-LESDE, 12 Aug 2026

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PART 1

(See rule 84)

Chemical Works

1. Application.- This schedule shall apply to all manufacture and process incidental thereto carried on

chemical works.

2. Definitions.- For the purpose of this schedule-

a) “chemical works” means any factory or such parts of any factory as are listed in Appendix ‘C’ to

this Schedule.

b) “efficient exhaust draught” means localised ventilation effected by mechanical or other means for

the removal of gas, vapour, fumeor dust to prevent it from escaping into the air of any place in

which works is carried on.

c) “bleaching powder” means the bleaching powder commonly called chloride of lime;

d) “chlorate” means chlorate or per chlorate.

e) “caustic” means hydroxide of potassium or sodium.

f) “chrome process” means the manufacture of chromate or bichromate of potassium or sodium, or

the manipulation, movement or other treatment of these substances;

g) “nitro or amino process” means the manufacture of nitro or amino derivatives of phenol and of

benzene or its homologues, and the making or explosives with the use of any of these substances.

h) the term “permit to work system” means the compliance with the procedures laid down under

para 20 of part II.

i) “toxic substances” means all those substances which when they enter into the human body,

through inhalation or ingestion or absorption through skin in sufficient quantities cause fatality

exert serious affliction of health or chromic harmful effects on the health of persons exposed to it

due its inherent chemical or biological effects. In respect to substances whose TLV is specified in

Rule exceeding the concentration specified therein wood made the substance toxic;

j) “emergency” means a situation or condition leading to a circumstance or set of circumstances

in which there is danger to the life or health of persons or could result in big fire or explosion

or pollution to the work and outside environment, affecting the workers or neighbourhood in a

series manner, demanding immediate action;

k) “dangerous chemical reactions” means high speed reactions, run-away reactions, delayed

reactions, etc., and are characterized by evolution of large quantities of heat, intense, release of

toxic or flammable gases or vapours, sudden pressure build-up etc.,

l) “manipulation” means mixing, blending, filling, emptying, grinding, sieving, drying, packing,

sweeping, handling, using etc.,

m) “appropriate personal protective equipment” means items of personal protective equipment

conforming to the relevant ISI specifications or in the absence of it, personal protective equipment

approved by the Chief Inspector-cum-Facilitator of factories;

n) “appropriate personal protective equipment” means that when the protective equipment is used

by the worker, he/she shall have no risk to his life or health or body; and

o) “confined space” means any space by reason of its construction as well as in relation to the nature

of the work carried on therein and where hazards to the persons entering into or working inside

exist or are likely to develop during working.

PART II

General Requirements

Applying to all the works in Appendix “C”

1. Housekeeping.

(i) Any spillage of materials shall be claimed up before further processing.

(ii) Floors, platforms, stairways, passages and gangways shall be kept free of any obstructions.

(iii) They shall be provided easy means of access to all parts of the plant to facilitate cleaning.

2. Improper use of chemicals.- No chemicals or solvents or empty containers containing chemical or

solvents shall be permitted to be used by workers for any purposes other than in the processes for

which they are supplied.

3. Prohibition on the use of food, etc., - No food, drink, tobacco, pan or edible item shall be stored or

heated or consumed or on nearby part of the plant or equipment.

4. Cautionary Notices and Instructions

(i) Cautionary notices in a language understood by the majority of the workers shall be prominently

displayed in all hazardous areas drawing the attention of all workers about the hazards to health,

hazards involving fire and explosion and any other hazards such as consequences or testing of

material of substances used in the process or using any contaminated container for drinking or

eating, to which the workers attention should be drawn for ensuring the safety and health.

(ii) In addition to the above cautionary notice, arrangement shall be made to instruct educate are

the workers including illiterate workers about the hazards in the process including the specific

hazards to which they may be exposed to, in the normal course their work. Such instructions

and education should also deal with the hazards involved in authorized and unsafe practices

including the properties of substances used in the process under normal conditions as well as

abnormal conditions and the precaution to be observed against each and every hazard. Further

an undertaking from the workers shall be obtained within one month of their employment and

for old workers employed within one month of coming in to operation of the rules, to the effect

that they have read the contents of the cautionary notice and instructions, understood them and

would abide them. The training and instructions to all workers and all supervisory personnel

shall include the significance of different types of symbols and colours used on the label struckor

painted on the various types containers and pipe lines.

5. Evaluation and provision of safe guards for the commencement of process

(i) Before commencing any process or any experimental work, or any manufacture covered under

Appendix “C”, the occupier shall take all possible steps to ascertain definitely all the hazards

involved both from the actual operations and the chemical reactions including the dangerous

chemical reactions. The properties of the raw materials used, the final products to be made and any

by-products derived during manufacture, shall be carefully studied and provisions shall be made

for dealing with any hazards including effects on workers which may occur during manufacture.

(ii) Information in writing, giving details of the process its hazards and the steps taken or proposed

to be taken from the design stage to disposal stage for ensuring the safety as in sub-paragraph

(1) above should be sent to the Chief Inspector-cum-Facilitator at the earliest but in no case less

than 15 days before commencing manufacture, handling or storage of any of items covered under

Appendix “C”, whether on experimental basis, or as pilot plant or as trail production or as large

scale manufacture.

(iii) The design, Construction, installation, operator maintenance and disposal of the buildings, plant

and facilities shall take into consideration effective safe guards against all the safety and health

hazards so evaluated.

(iv) The requirements under sub-paragraph (1) to 3 shall not act in lieu of or in derogation to any

other provisions, contain in any act governing the work.

6. Authorised entry. - Authorized persons only shall be permitted to enter any section of the factory or

plant were any dangerous operations or processes are being carried on or where dangerous chemical

reaction are taking place or were hazards chemicals are store.

7. Examination of instruments and safety devices.

(i) All instruments safety devices use in the process shall be tested before taking into use and after

carried out any repair to them and examined once in a month, by a competent person. Records of

such tests and examinations shall be maintained in a register.

(ii) All instruments and safety devices used in the process shall be operated daily or as often as it is

necessary to ensure its effective and efficient working all times.

8. Electrical installation- All electrical installations used in the process covered in Appendix “C” shall

be of an appropriate type to ensure safety against the hazard prevalent in that area such as suitability

against dust, dampness, corrosion, flammability and explosivity etc., and shall conform to the relevant

ISI specifications governing the construction and use for that area.

9. Handling and storage of chemicals.

(i) The containers for handling and storage of chemicals shall be of adequate strength taking into

consideration the hazardous nature of the contents. They shall also be provided with adequate

labelling and colour coding arrangements to enable identification of the containers and their

contents indicating the hazards and safe handling methods and shall conform to the respective

ISI standards. The instructions given in the label shall be strictly adhered to. Damaged containers

shall be handled only under supervisions of a knowledgeable and responsible person and spillage

shall be rendered innocuous in a safe manner using appropriate means.

(ii) The arrangements for the storage of chemicals including charging of chemicals in reaction vessels

and containers shall be such as to prevent any risk of fire or explosion or formation of toxic

concentration of substances above the limits

(iii) Without prejudice to the generality of the requirements in sub paragraph (2) above, the

arrangement shall have suitable ventilation facilities and shall enable the maintenance of safe

levels in vessels and containers. Such arrangement shall also take into consideration, the type of

flooring and the capacity of flooring and the compatibility requirements of substance with other

chemical stored nearby.

iv) a) Storage of chemicals and intermediate products which are highly unstable or reactive or

explosive shall be limited to the quantities required for two months used.

b) Whenever the quantities laid down in the above clause (a) are to be exceeded, the permission

of the Chief Inspector-cum-Facilitator shall be obtained.

c) Notwithstanding any thing contained inclause 9 (a) and (b) above the Chief Inspector-cum-

Facilitator of Factories may direct any factory carrying out process covered in Appendix

“C” to further limit the storage of hazardous substances to quantity less than two months of

consideration of safety.

v) Standby arrangements equal to the biggest container shall always be available to transfer the toxic

substances quickly into the stand by storage facility in any defect develops in any of container

resulting in the release of toxic substance.

vi) Any storage facility constructed using non-metallic material such as Fiber Glass Reinforced

plastics (FRP) all glasses vessels, etc., shall have adequate strength to withstand the stress, if any,

exerted by the contents and shall be properly anchored, working platform, access ladders, pipeline

etc. used in such storage facility shall not have any support on the structure of storage facility and

shall be independently supported.

10. Facility for isolation.- The plant and equipment shall be constructed and maintained as to enable

quick isolation of plant or part of plant or equipments, with appropriate indication. One copy of the

layout plan indicating the isolation facilities shall always be available with the security personnel, the

maintenance and the health and safety personnel and these isolation facilities shall be checked for its

effectiveness once in a month.

11. Personnel protective equipment

(i) All workers exposed to the hazards in the process covered by this schedule shall be provided with

appropriate and approved type of personal protective equipment. Such equipment shall be in a

clean, sterile and hygienic condition before issue.

(ii) The occupier shall arrange to inform, educate and supervise all the workers in the use of personnel

protective equipment while carrying out the job.

(iii) As regards any doubt regarding appropriateness of any personnel protective equipment, the

decision of the Chief Inspector-cum-Facilitator will be final.

12. Alarm System.

(i) Suitable and effective alarm systems giving audible and visible indications, shall be installed at

the control room as well as in all strategic locations where process control arrangements are

available so as to enable corrective action to be taken before the operational parameters exceed

the predetermined safe levels or lead to conditions conductive for an outbreak of fire or explosion

to occur. Such alarm system shall be checked daily and tested every month at least once to ensure

its performance efficiency at all times.

(ii) The Chief Inspector-cum-Facilitator of Factories may direct such system to be installed in case

of plants or processes where toxic materials are being used and spillage of leakage of which may

cause wide spread poisoning in or around the plant.

13. Control of escape of substance in to the work atmosphere

(i) Effective arrangements such as, enclosure or by-pass, or efficient exhaust drought, maintained

of negative pressure etc., shall be provided in all plants, containers, vessels, sewers, drains, flues,

ducts, culverts and buried pipes and equipment to control the escape and spread of substances

which are likely to give rise to fire or explosion or toxic hazards during normal working and in the

event of accident or emergency.

(ii) In the event of the failure of the arrangements for control resulting in the escape of substance in

the work atmosphere immediate steps shall be taken to control the process in such a manner, that

further escape is brought down to the safe level.

(iii) The substances that would have escaped into the work atmosphere before taking immediate steps

as required in sub-paragraph (2), shall be rendered innocuous by diluting with air or water or any

other suitable agent or by suitably treating the substances.

14. Control of dangerous chemical reactions.- Suitable provision, such as automatic or remote-control

arrangements shall be made for controlling the effects of dangerous chemical reactions. In the event of

failure of control arrangements automatic flooding or blanketing or other effective arrangements shall

come into operation.

15. Testing, examination and repair of plant and equipment.

a) All parts of plant, equipment and machinery use in the process which in the likely event of

their failure may give rise to an emergent situation shall be tested by a competent person before

commencing process and retested at an interval of two years or after carrying out repairs to it. The

competent person shall identify the parts of the plant, equipment and machinery required to be

tested as aforesaid and evolve a suitable testing procedure. In carrying out the test as mentioned

above in respect of pressure vessels or reaction vessels the following precautions shall be observed,

namely:-

(i) before the test is carried out, each vessel shall be thoroughly cleaned and examined externally,

and as far as practicable, internally also for surface defects, corrosion and foreign matter.

During the process of cleaning and removal of sludge, if any, all due precautions shall be

taken against fire or explosion, of such sludge is of pyrophoric nature or contains spontaneous

combustible chemicals;

(ii) as soon as the test is completed, the vessel shall be thoroughly dried internally and shall

be clearly stamped with the marks and figures indicating the person by whom testing has

been done and the date of test; and any vessel which fails to pass the test or whichf or any

other reason is found to be unsafe for use shall be destroyed or rendered unusable under

intimation to the Chief Inspector-cum- Facilitator.

b) All parts of plant, equipment, machinery which in the likely event of failure may give rise to an

emergent situation shall be examined once in a month by the competent person.

c) Records of testing and examination referred to in paragraph (1) and (2) shall be maintained as

long as that part of the plant, equipment and machinery are in use.

d) All repair work including alteration, modification and addition to be carried out to the plant

equipment and machinery shall be done under the supervision of a responsible person who

shall evolve a procedure to ensure safety and health of persons doing thework. When repair or

modification is done on pipe lines, and joints are required to be welded, but welding joints shall be

preferred. Wherever necessary the responsible person shall regulate the aforesaid work through a

“permit to work system”.

16. Staging.

a) All staging that is created for the purpose of maintenance work or repair work or for work

connected with entry into confined spaces and used in the processes included in Appendix “A”

shall be stable rigid and constructed out of substantial material of adequate strength. Such staging

shall conform to the respective Indian Standard Specifications.

b) Staging shall not be erected over any closed or open vessel unless the vessel is so constructed and

ventilated to prevent exposure of persons working on the stage

c) All the staging constructed for the purpose of this para shall have appropriate access which are

safe and shall be fitted with proper handrails to a height of 1metre and to be board.

17. Seating arrangements.- The seating arrangements provided for the operating personal working in

process covered in Appendix “A” shall be located in the safe manner as to prevent the risk of exposure

to toxic, flammable and explosive substances evolved in the work environment in the course of

manufacture or repair or maintenance, either due to failure of plant and equipment or due to the

substances which are under pressure, escaping into the atmosphere.

18. Entry into or working confined spaces

a) The occupier of every factory to which the provisions of this schedule apply, shall ensure the

observance of the following precautions before permitting any person to enter or work inside the

confined spaces.

(i) identify all confined spaces and the nature of hazards that are encountered in such spaces,

normally or abnormally, and arrange to develop the most appropriate safeguards for ensuring

the safety and the health of persons entering into or working inside, the confined spaces;

(ii) regulate the entry or work inside the confined spaces through a “permit to work system”

which should include the safeguard to developed as required under sub clause (a) above;

(iii) before testing the confined space for entry into or work, the place shall be rendered safe by

washing or cleaning with neutralizing agents; or purging with steam inert gases and making

adequate forced ventilation arrangements or such measure which will render the confined

space safe;

(iv) shall arrange to carry out such test as are necessary for the purpose by a competent person

and ensure that the confined space is safe for the persons to enter or work. Such testing shall

be carried out as often as is necessary during the course of work to ensure its continued

safety;

(v) shall arrange to educate and train the personnel who would be required to work in confined

spaces about the hazards involved in the work. He shall also keep in readiness the appropriate

and approved personal protective equipment including arrangements for rescue, resurrection

and first-aid, and shall arrange supervision of the work at all times by a responsible and

knowledgeable person.

b) The manager shall maintain a log of all entry into or work in confined spaces and such record

shall contain the details of persons assigned for the work, the locations of the work and such

other details would have a bearing on the safety and health of the persons assigned for this work.

The law book so maintain shall be retained as long as the concerned workers are in service and

produced to the Inspector-cum-Facilitator when demand.

19. Maintenance works etc.,

a) All the work connected with the maintenance of plants and equipment including cleaning of

empty containers which have held hazardous substances used in the process covered in this

Schedule, shall be carried out under “permit to work system” employing trained personnel and

under the supervision of responsible person, having knowledge of the hazards and precaution

required to deal with them.

b) Maintenance work shall be carried out in such manner that there is risk to persons in the vicinity

or to persons who pass by. If necessary, the place of such work shall be condoned off or the

presence of unconnected persons effectively controlled.

20. Permit to work system. -The permit to work system shall inter-alia include the observance of the

following precautions while carrying out any specified work to be subjected to the permit to work

system-

a) all work subject to the permit to work system shall be carried out under the supervision of a

knowledgeable and responsible person.

b) all parts of plant or machinery or equipment on which permit to work system is carried out shall

remain isolated from other parts throughout the period of permit to work and the place of work

including the parts of plant may, machinery shall be rendered safe by cleaning, purging, washing

etc,

c) all work subject to the permit to the work system shall have predetermined work procedures

which integrate safety with the work. Such procedure shall be reviewed whenever any change

occurs in material or equipment so that continued safety is ensured;

d) persons who are assigned to carry out the permit to work system shall be physically fit in all

respect taking into consideration the demand and nature of the work before entering into the

confined space. Such person shall be adequately informed about the correct work procedures as

well as the precautions to be observed while carrying out the permit to work system;

e) adequate rescue arrangements wherever consider necessary and adequate first-aid, rescue and

resurrection arrangements shall be available in good working condition near the place of work

while carrying out the permit to work system, for use in emergency.

f) appropriate and approved personal protective equipment shall be used while carrying out the

“permit to work system”.

g) after completion of work subject to the “permit to work system”, the person responsible shall

remove all the equipment and tools and restore to the original condition so as to prevent any

danger while carrying out regular process.

21. Safety sampling personnel.- The occupier shall ensure the safety of persons assigned for collecting

sample by instructing them on the safe procedures. Such personnel shall be provided with proper and

approved personnel protective equipment, if required.

22. Ventilation.- Adequate ventilation arrangements shall be provided and maintained at all times in the

process area where dangerous or toxic or flammable or explosive substances could be evolved. These

arrangements shall ensure that concentrations, which are either harmful or could result in explosion,

are not permitted to be build up in the work environment.

23. Procedure for meeting emergencies

a) The occupier for every factory carrying out the works covered in Appendix “C” shall arrange to

identify all types of possible emergencies that could occur in the process during the course of

work or while carrying out maintenance work or repair work. The emergency is so identified shall

be reviewed every year.

b) The occupier shall formulate a detailed plan to meet all such identified emergencies including

arrangements for summoning outside help for rescue and firefighting arrangements for making

available urgent medical facilities.

c) The occupier shall send the list of emergencies and the details of procedures and plants formulated

to meet the emergencies to the Chief Inspector-cum-Facilitator of Factories.

d) The occupier shall arrange to install distinctive and recognizable warning arrangements to

caution all persons inside the plant as well as the neighbouring community, if necessary, to enable

evacuation of persons and to enable the observance of emergency procedures by the persons who

are assigned emergency duties. All concerned must well

e) informed about the warning arrangements and there meaning. The arrangements must be checked

for its effectiveness every month.

f) Alternate power supply arrangements shall be made and interlocked with the normal power

supply system so as to ensure constant supply of power to the facilities and equipment meant for

compliance with requirements of paragraph 10, 11, 12, 13, 14, 18, 22 and this paragraph of part II,

part III, part IV and Part V of this schedule.

g) The occupier shall arrange to suspend further process work in a place where emergency is

established and shall forthwith evacuate all persons in that area except workers who have been

assigned emergency duties.

h) All the employees of the factory shall be trained about the action to be taken by them including

evacuation procedures during emergencies.

i) All emergency procedures must be rehearsed every three months and deficiencies, if any, in the

achievement of the objectives shall suitably be corrected.

j) The occupier shall arrange to have ten percent of the workers trained in the use of First Aid Fire

Fighting appliances and in the rendering of specific First Air measures taking in to consideration

the special hazards of the particular process.

k) The occupier shall furnish immediately on request the specific chemical identity of the hazardous

substances to the treating physician when the information is needed to administer proper

emergency or first aid treatment to exposed persons.

24. Danger due to effluent.

a) Adequate precautions shall be taken to prevent the mixing of effluents from different processes

and operations which may case may dangerous or poisonous gases to beevolved.

b) Effluents which contain or give rice in the presence of other effluents to poisonous gases shall be

provided with independent drainage systems to ensure that they may be trapped and rendered

shape.

PART- III

(See rule 84)

Fire and Explosion risks

1. Source of ignition including lighting installation

a) No internal combustion engine and no electric motor or other electric equipment and fitting

mixtures capable of generating sparks or otherwise causing combustion or any other sources of

ignition or any naked light shall be installed or permitted to be used in the process area where

there could be fire and explosion hazards.

b) All hot exhaust pipes shall be installed outside a building and other hot pipes or hot surface or

surfaces likely to become hot shall be suitably protected.

c) The classification of work area in terms of its hazard potential and the selection of electrical

equipment or other equipment that could constitute a source of ignition shall be in accordance

with the respective Indian standard.

d) Where a flammable atmosphere may be prevalent or could occur, the soles of food wear worn by

workers shall have no metal on them, and the wheels of trucks or conveyors shall be conductive

type.

e) All tools and appliances used for work in this area shall be of non-sparking type.

f) Smoking in processes areas where there are risks of fire and explosion shall be prohibited and

warning notices in the language understood by majority of workers shall be pasted in the factory

prohibiting, smoking into specified areas.

2. Static Electricity.

a) All machinery and plant, particularly, pipe lines and belt drives, on which static charge is likely

to accumulate, shall be effectively earthed. Receptacles for inflammable liquid shall have metallic

connections to the earthed supply tanks to prevent static sparking. Where necessary, humidity

shall be regulated.

b) Mobile tanker wagons shall be earthed during filling and discharge, and precautions shall be taken

to ensure that earthing is effective before such filling or discharge takes place.

c) Lighting protection- Lighting protection arrangement shall be fitted where necessary, and shall be

maintained.

d) Process heating.- The method of providing heat for a process likely to result in fire and explosion

shall be as safe as possible and where the use of naked flame is necessary, the plant shall be so

constructed as to prevent any escaping flammable gas, vapour or dust from coming into contact

with the flame, or exhaust gases, or other sources likely to cause ignition. Wherever possible, the

heating arrangement shall be automatically controlled at a predetermined temperature below the

danger temperature.

3. Leakage of flammable liquids

a) Provision shall be made to confine by means of bund walls, dykes, sumps etc., possible leakages

from storage vessels containing flammable liquids.

b) Waste material in contact with flammable substances shall be disposed off suitably under the

supervision of knowledgeable and responsible person.

c) Adequate and suitable fire –fighting appliances shall be installed in the vicinity of such vessels.

4. Safety Valves.-Every still and every closed vessel in which gas is evolved or in to which gas is passed

and in which the pressure is liable to rise above the atmospheric pressure, shall have attached to it a

pressure gauge, and aproper safety valve or other equally efficient means to relive the pressure. These

appliances shall be maintained in good condition.

5. Installation of pipe line etc.- All pipe lines carrying flammable or explosive substances shall be protected

from mechanical damage and shall be examined by a responsible person once in week to detect any

deterioration or defects, or accumulation of flammable or explosive substances, and record kept of any

defects found and repairs made.

6. Firefighting system.

a) Every factory employee 500 or more persons and carrying out process listed in Appendix “C”

shall provide.

b) Trained and responsible firefighting squad as to effectively handle the fire fighting and lifesaving

equipment in the event of fire or another emergency. Number of persons in this squad will

necessarily depend upon the side of risk involved, but no case shall be less than eight such trained

persons to be available at any time. The squad shall consist of watch and ward personnel, fire

pumpman and departmental supervisors and operators trained in the operation of fire and

emergency services.

c) Squad leaders shall preferably be trained in a recognised government institution and their

usefulness enhanced by providing residence on thepremises.

d) Squad personnel shall be provided with clothing and equipment including helmets, boots and

belts.

7. A muster roll showing the duties allocated to each member of the squad shall be prepared and copies

supplied to each leader as well as displayed in prominent placesso as to be easily available for reference

in case of emergency.

8. The pumpman shall be thoroughly conversant with the location of all appliances. He shall be responsible

for maintaining all firefighting equipment in proper working order. Any defect coming to his notice

shall be immediately be brought to the notice of squad leader.

9. Asfarasis practicable, the fire pump from the main gate(s) of the factory shall be connected to all

manufacturing or storing areas through telephone, interlinked and placed in a convenient location

near such area.

PART- IV

(See Rule 84)

Risks of Toxic Substances

1. Leakage.

a) All plants shall be so designed and constructed as to prevent the escape of toxic substance. Where

necessary, separate building rooms or protective structures shall be used for the dangerous stages

of the process and the building shall be so designed as to localise any escape of toxic substances.

b) Catch pits, bunt walls, dykes, or other suitable safe guards shall be provided to restrict the serious

effects in such leakages. Catch puts shall be placed below joints in pipelines where there is danger

involved to maintenance and other workers from such leakage.

2. Drainage.-Adequate drainage shall be provided and shall lead to collection tanks specifically provided

for this purpose where in deleterious material shall be neutralised, treated or otherwise rendered safe

before it is discharged into public drains or sewers.

3. Covering of vessels.-

a) Every fixed vessel or structure containing any toxic substances and not so covered as to eliminate

all reasonable risk of accidental contact of anyportion of thebody of a worker, shall be so

constructed as to avoid physical contact.

b) Such vessel shall, unless its edge is at least 90 centimeters above the adjoining ground or platform,

be securely fenced to a height of at least 90 centimeters above such adjoining ground or platform.

c) Where such vessels adjoin and the space between them clear of any surrounding brick or other

work is either less than 45 centimeters in width or 45 or more centimetres in width, but is not

securely fenced on both sides to a height of at least 90 centimeters, secure barriers shall be so

placed as to prevent passage between them.

Provided that sub-paragraph 92 of this paragraph shall not apply to –

(i) saturators used in the manufacture of sulphate of ammonia; and

(ii) that part of the sides of brine evaporating pans which require raking, drawing or filling.

4. Continuous exhaust arrangement.-

a) Any process evolving toxic vapour, gas, fume and substance shall have efficient continuous exhaust

draught, such arrangement, shall be interlocked in the process control wherever possible.

b) In the event of failure of continuous exhaust arrangement means shall be provided to automatically

stop the process

5. Workbench.- All the work benches used in process involving the manipulation of toxic substances,

shall be graded properly and shall be made of smooth impervious surface which shall be washed daily

after the completion of work.

6. Waste disposal.-

a) There shall be provided in suitable receptacle made of non-absorbable material with a tightly

fitting cover for depositing waste material soiled with toxic substances and the contents of such

receptacle shall be destroyed by burning or using other suitable methods under the supervision of

a responsible person.

b) During the course of manufacture, whenever any batch or intermediate products having toxicity

is rejected on considerations of quality, sufficient precautions shall be taken to render them

innocuous or otherwise treat them or inactive them, before disposal.

(i) The empty containers of toxic substances shall be cleaned thoroughly before disposal under

the supervision of a responsible person.

PART - V

(See rule 84)

Special Provisions

1. Special precautions for Nitro or Amino processes.-

(a) Unless the crystallised nitro or amino substances or any of its liquor is broken or agitated in a

completely enclosed process so as not to give rise of dust or fume, such process shall be carried on

under an efficient exhaust draught or by adopting any other suitable means in such manner as to

prevent the escape of dust or fume in the working atmosphere.

(b) No part of the plant or equipment or implements which was in contact with nitro or amino

compounds shall be repaired or handled unless they have been emptied and thoroughly cleaned

and decontaminated.

(c) Filling of containers with nitro or amino compounds shall be done only by using a suitable scoop

or avid physical contact and the drying of the containers in the stove shall be done in such a

manner that the hot and contaminated air from the stove is not drawn into the workroom.

(d) Processes involving the steaming into or around any vessel containing nitro or amino compounds

or its raw materials shall be carried out in such a manner that the steam or vapour is effectively

prevented to be blown back into the working atmosphere.

(e) Suitable antidotes such as methylene blue injections shall always be available at designated places

of work for use during emergency involving the poisoning with nitro or amino compounds.

2. Special precaution for “Chrome processes” .

(a) Grinding and sieving of raw materials in chrome process shall be carried on such a manner and

under such condition as to secure effective separation from any other processes and under an

efficient exhaust draught.

(b) There shall be washing facilities located very near to places where wet chrome processes such as

leaching, acidification, sulphate settling, evaporation, crystallisation, centrifugation or packing

are carried out, to enable quick washing of affected parts of body with running water.

(c) Weekly inspection of hand and feet of all persons employed in chrome process shall be done by

aqualified nurse and record of such inspection shall be maintained in a form approved by the

Chief Inspector-cum-Facilitator of Factories.

(d) There shall be always available at designated places of work suitable ointment such as glycerine,

Vaseline etc., and water proof plaster in a separate box readily accessible to the workers so as to

protect against perforation of nasal septum.

3. Special precautions for processes carried out in all glass vessels.

(a) Processes and chemical reactions such as manufacture of vinyl chloride, benzyl chloride etc.,

which are required to be carried out in all glass vessels shall have suitable means like substantial

wire mesh covering to protect persons working nearby in the event of breakage of glass vessel.

(b) Any spillage or emission of vapour form the all-glass vessel due to breakage, shall be immediately

inactivated or rendered innocuous by suitable means such as dilution with water or suitable

solvents so as to provide the risks of fire or explosion or health hazards.

4. Special precaution for processes involving chloride manufacture

(a) Crystallisation, grinding or packing of chlorite shall not be done in a place used for any other

purpose and such places shall have hard, smooth and impervious surface made of non-combustible

material. The place shall be thoroughly cleaned daily.

(b) The personal protective equipment like overall, etc., provided for the chlorate workers shall not be

taken from the place of work and they shall be thoroughly cleaned daily.

(c) Adequate quantity of water shall be available near the place of chlorate process for use during fire

emergency.

(d) Wooden vessels shall not be used for the crystallization of chlorite or to contain crystallized

ground chlorite.

5. Special precautions in the use of plant and equipments made from reinforced plastics

(a) All plant and equipments shall confirm to appropriate Indian or any other National Standard.

(b) Care shall be taken during storage, transport, handling and installation of plant and equipments

to avoid accidental damage.

(c) All plant and equipments shall be installed in such a way as to ensure that loads are distributed as

intended in design or as per the recommendations of the manufacturers.

(d) All pipe work shall be supported so that total loads local to the branches on the vessel or tank do

not exceed the design values.

(e) After erection all plant and equipments shall be subjected to a pressure test followed by a thorough

examination by a competent person. The test and examination shall be as per relevant standards.

A Certificate of test and examination by competent person shall be obtained and kept available at

site.

(f) All plant and equipments shall be subjected to periodical test and examination and record

maintained, as per paragraph 15 in Part II of this schedule.

(g) Plant and equipments during their use shall not be subjected to over filling or over loading beyond

rated capacity.

PART - VI

(See rule 84)

Medical Requirements

1. Decontamination Facilities- In all the places where toxic substances are used in processes listed in

Appendix “A’ the following provisions shall be made to meet an emergency.

(a) fully equipped first aidbox,

(b) readily accessible means of drenching with water person, part of body of persons, and clothing or

persons who have been contaminated with such toxic and corrosive substances, and such means

shall be as shown in the Table below No. of person employed at any time No. of drenching showers

Up to 50 persons 2

Between 51 to 100 3

101 to 200 + 1 for every 50 persons 3 thereafter

201 to 400 + 1 for every 100 persons 5 thereafter

401 and above + 1 for every 200 persons 7 thereafter

(c) a sufficient number of eye wash bottles filled with distilled water or suitable liquid, kept in boxes

or cupboards conveniently situated and clearly indicated by a distinctive sign which shall be

visible at all times.

2. Occupational Health Centre.- In all factories carrying out processes covered in Appendix “A” there

shall be provided and maintained in good order an occupational health centre with facilities as per

scale laid down here under-

(a) For factories employing up to 50 workers.-

(i) the services of qualified medical practitioner hereinafter known as Factory Medical Officer,

available on aretainership basis in his notified clinic neartothefactoryfor seeking medical

help during emergency. He will also carry out the pre-employment and periodical medical

examinations as stipulated in paragraph 4 of this part.

(ii) A minimum of 5 persons trained in first aid procedures, amongst whom at least one shall

always be available during the working period.

(iii) A fully equipped first-aid box.

(b) For factories employing 51 to 200 workers.-

(i) The Occupational Health Centre shall have a room having a minimum floor area of 15 sq.m.

with floors and walls made of smooth hard and impervious surface and shall be adequately

illuminated, ventilated and equipped.

(ii) A part-time Factory Medical Officer will be in overall charges of the centre who shall visit

the Factory minimum twice in a week and whose services shall be readily available during

emergencies.

(iii) There shall be one qualified and trained dresser-cum-compounder on duty throughout the

working period.

(iv) A fully equipped first-aid box.

3. Factories employing above 200 workers-

(a) There shall be one Full-time Factory Medical Officer for factories employing up to 500 workers

and one more medical officer for every 1000 workers or part thereof.

(b) The Occupational health centre in this case shall have a minimum of two rooms each having

a minimum floor area of 15 sq.m. with floors and walls made of smooth, hard and impervious

surface and shall be adequately illuminated, ventilated and equipped.

(c) There shall be one trained nurse, or pharmacist and one Attender throughout the working period.

(d) The Occupational Health Centre in this case shall be suitably equipped to manage medical

emergencies.

4. Ambulance van.

(a) In every factory carrying out processes carried in Appendix “C” there shall be provided and

maintained in good condition a suitably constructed and fully equipped ambulance van as per

Appendix “C” manned by a full-time driver-cum-mechanic and helper, trained in first-aid for

the purpose of transportation of serious cases of accidents or sickness unless arrangements for

procuring such facility at short notice during emergencies have been made with the nearby

hospital or other places, the ambulance van shall not been used for any purpose other than the

purpose stipulated herein and always be available near the Occupational Health Centre.

(b) The relaxation to procure ambulance van from nearby place provided for in sub-paragraph (1)

above will not be applicable to factories employing more than 500 workers.

5. Medical Examination

(a) Workers employed in processes covered in Appendix “C” shall be medically examined by a Factory

Medical Officer in the following manner.

(i) Once before employment, to ascertain physical suitability of the person to do the particular

job;

(ii) Once in a period of six months, to ascertain the health status of the worker; and

(iii) The details of pre-employment and periodical medical examination carried out as aforesaid

shall be recorded in the prescribed form.

(b) Any finding of the Factory Medical Officer revealing any abnormality or unsuitability of any

person employed in the process shall immediately be reported to the Medical Officer who shall

in turn, examine the concerned workers and communicate his findings within 30 days. If the

Medical Officer is of the opinion that the person so examined is required to be suspended from

the process for health protection, he/she will direct the occupier accordingly who shall not employ

the said worker the same process. However, the person so suspended from the process shall be

provided with alternate placement facilities unless he/she is fully incapacitated in the opinion of

the Medical Officer, in which case the person affected shall be suitably rehabilitated:

Provided that the Medical Officer on his own way examine any other worker whom he/she

feels necessary to be examined for ascertaining the suitability of his employment in the process

covered in Appendix “C” or for ascertaining the health status of any other worker and his opinion

shall be final.

(c) No person shall be newly appointed without the Certificate of fitness granted by the Factory

Medical Officer. If the factory Medical Officer declared a person unfit for being appointed to work

in the process covered in Appendix “C”, such person shall have a right of appeal to the Medical

Officer, whose opinion shall be final in this regard.

(d) The worker suspended from the process owing to the circumstances covered in sub-paragraph (2)

shall be employed again in the same process only after obtaining the fitness certificate from the

Medical Officer and after making entries to that effect in the health register.

PART- VII

(See rule 84)

Additional Welfare Amenities

1. Washing facilities.

(a) There shall be provided and maintained in every factory for the use of all the workers taps for

washing, at the rate of one tap for every 15 persons including liquid soap in a container with tilting

arrangements and nail brushes or other suitable means for effective cleaning. Such facilities shall

be conveniently accessible and shall be kept in a clean and hygienic condition.

(b) If washing facilities as required above area provided for women, such facilities shall be separate for

them and adequate privacy at all times shall be ensured in such facilities.

2. Mess room facilities

(a) The occupier of all the factories carrying out processes covered in Appendix “C” and employing

50 workers or more, shall provide for all the workers working in a shift mess facility which are

well ventilated and provided with tables and sitting facilities along with the provision of clod and

hygienic drinking water facilities.

(b) Such facilities shall include suitable arrangements for cleaning and washing and shall be maintained

in a clean and hygienic condition.

3. Cloak room facilities

(a) The occupier of every factory carrying out any process covered in Appendix “C” shall provide for

all the workers employed in the process cloak room facilities with lockers. Each worker shall be

provided with two lockers, one for work clothing and another separately for personal clothing and

the lockers should be such as to enable the keeping in the clothing in a hanging position.

(b) The cloak room facilities so provided in pursuance of sub-paragraph (1) shall be located as far

as possible near to the facilities provided for washing. If it is not possible to locate the washing

facilities, the cloak room facilities shall have adequate and suitable arrangements for cleaning &

washing.

4. Special bathing facilities

(a) The occupier of any factory carrying the process covered under Appendix “D” shall provide special

bathing facilities for all the workers employed and such facilities shall be provided at the rate of 1

for 25 workers and part thereof, and shall be maintained in a clean and hygienic condition.

(b) The occupier shall insist all the workers employed in the processes covered in Appendix “B” to

take bath after the completion of the days or shift work using the bathing facilities so provided and

shall also effectively prevent such of those workers taking bath in any place other than the bathing

facilities.

(c) Notwithstanding anything contained in sub-paragraph (1) above, the Chief Inspector-cum-

Facilitator may require in writing the occupier of any factory carrying out any other process for

which in his opinion bathing facilities are essential from the health point of view, to provide

special bathing facilities.

PART - VIII

(See rule 84)

Duties of workers

1. Every worker employed in the processes covered in Appendix “C” and Appendix “D’ shall not make

any safety device appliances or any guarding or fencing arrangement inoperative or defective and shall

report that defective condition of the aforesaid arrangements as soon as is aware of any such defect.

2. Before commencing any work, all workers employed in processes, covered in Appendix “C” shall check

their workplace as well as the machinery equipment or appliance used in the processes and report any

mal-functions or defect immediately to the supervisors or any responsible person of the management.

3. All workers shall co-operative in all respect with the management while carrying out any work or any

emergency duty assigned to them in pursuance of this schedule and shall always use all the personal

protective equipments issued to them in a careful manner.

4. All workers employed in the processes covered in Appendix “C” to Appendix “D” shall not smoke in

the process area or storage area if special facilities are provided by the management only such facilities

should be used.

5. All workers employed in the process covered in Appendix“C” shall not remain in unauthorized place

or carry out unauthorized work or improvise any arrangements or adopt short out method or misuse

any of the facilities provided in pursuance of the Schedule, in such a manner as to cause risk to

themselves as well as or to others employed.

6. The workers shall not refuse undergoing medical examination as required under these rules.

PART - IX

(See rule 84)

Restriction on the employment of young persons under 18 years of age and women.

1. The Chief Inspector-cum-Facilitator of Factories may by anorder in writing, restrict or prohibit the

employment of women and young persons under the age of 18, in any of the processes covered in

Appendix “C” of this schedule on consideration of health and safety of women and young persons.

2. Such persons who are restricted or prohibited from working in the process due to the order issued in

pursuance of sub- paragraph (1) above shall be provided with alternative work which is not detrimental

to their health or safety.

PART - X

(See rule 84)

Exemption

1. Power of exemption.- The State Government or subject to the control of the State Government, the

Chief Inspector-cum-Facilitator may exempt from the compliance with any of the requirements of

this Schedule partly or fully, any factory carrying out processes covered in Appendix “E”, if it is clearly

and satisfactorily established by the occupier that the compliance with any of the requirements is

not necessary to ensure the safety and health of persons employed suitably and effective alternate

arrangements are available to any of the requirements covered in this schedule.

Source: The Mizoram Occupational Safety, Health and Working Conditions Rules, 2026, No. B-11011/12/2026-LESDE — Mizoram Gazette Extraordinary, Vol. LV, Issue No. 674, 13 August 2026, pp. 94–108 of the PDF. Open our copy at p. 94 · official download · all sources