The Mizoram Occupational Safety, Health and Working Conditions Rules, 2026
Schedule VIII
Official text
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(See rule 84)
Cleaning or smoothing, roughening, etc., of articles, by a jet of sand metal shot or grit, or other
abrasive propelled by a blast of compressed air or steam
1. Definitions – For the purpose of this schedule-
a) “blasting” means cleaning, smoothing, roughening, or removing of any part of the surface of any
article by use as an abrasive of a jet of sand, metal shot or grit or other material, propelled by a
blast of compressed air or steam.
b) “blasting enclosure” means a chamber, barrel, cabinet or any other enclosure designed for the
performance of blasting therein,
c) “blasting chamber” means a blasting enclosure in which any person may enter at any time in
connection with any work or otherwise, and
d) “Cleaning of Casting” where done as an incidental or supplemental process in connection with the
making of metal casting, means the freeing of the casting from adherent sand or other substance
and includes the removal of cores and the general smoothing of a casting, but does not include
the free treatment.
2. Prohibition of sand blasting–
a) Sand or any other substance containing free silica shall not be introduced as an abrasive into any
blasting apparatus and shall not be used for blasting:
b) Provided further that this clause shall come into force two years after the coming into operation
of this schedule:
c) Provided further that no pregnant woman or young person shall be employed or permitted to
work at any operation of sandblasting.
d) Precautions in connection with blasting operations
(i) Blasting shall not be done except in a blasting enclosure and no work other than blasting
and any work immediately incidental thereto and cleaning and repairing of the enclosure
including the plants and appliances situated therein, shall be performed in a blasting
enclosure. The enclosure shall be kept closed and air tight while blasting is being done
therein.
(ii) Blasting enclosure shall always be maintained in good condition and effective measures
shall be taken to prevent dust escaping from such enclosures, and from apparatus connected
therewith, into the air of any room.
(iii) There shall be provided and maintained for and in connection with every blasting enclosure,
efficient apparatus for separating, so far as practicable, abrasive which has been used for
blasting and which is to be used again as an abrasive, from dust or particles of other materials
arising from blasting, and no such abrasive shall be introduced into any blasting apparatus
and used for blasting until it has been so separated: Provided that this clause shall not apply,
except in the case of blasting chambers, to blasting enclosures, constructed or installed before
the coming into force of this schedule, if the Chief Inspector-cum-Facilitator is of opinion
that it is not reasonably practicable to provide such separating apparatus.
(iv) There shall be provided and maintained in connection with every blasting enclosure efficient
ventilating plant to extract, by exhaust draught effected by mechanical means, dust produced
in the enclosure. The dust extracted and removed shall be disposed of by such method and
in such manner that it shall not escape into the air of any room; and every other filtering
or settling device situated in a room in which persons are employed, other than persons
attending to such bag or other filtering or settling device, shall be completely separated from
the general air of that room in an enclosure, ventilated to the open air.
(v) The ventilation plant provided for the purpose of sub-paragraph (4) shall be kept in
continuous operation whenever the blasting enclosure is in use whether or not blasting is
actually taking place therein, and in the case of a blasting chamber, it shall be in operative
even when any person is inside the chamber for the purpose of cleaning.
3. Inspection and Examination.-
a) Every blasting enclosure shall be specially inspected by a competent person at least once in every
week in which it is used for blasting. Every blasting enclosure, the apparatus connected there with
and the ventilating plant, shall be thoroughly examined and in the case ventilating plant, tested
by a competent person at least once, in every month.
b) Particulars of the result of every such inspection, examination and test shall forth with be entered
in a register which shall be kept in a form approved by the Chief Inspector- cum-Facilitator and
shall be available for inspection by any work man, employed in or in connection with blasting in
the factory. Any defect found on any such inspection, examination or test shall be immediately
reported by the person carrying out the inspection, examination or test to the occupier, manager
or other appropriate person and without prejudice to the forgoing requirements of this schedule,
shall be removed without delay.
4. Provision of protecting helmets, gauntlets and overalls.-
a) There shall provide and maintained for the use of all persons who are employed in a blasting
chamber, whether in blasting or in any work connected therewith or in cleaning such a chamber,
protective helmets of a type approved by a certificate of the Chief Inspector-cum-Facilitator and
every such persons shall wear the helmet provided for this use while he/she is in the chamber and
shall not remove it until he/she is outside the chamber.
b) Each protective helmet shall carry a distinguishing mark indicating the persons by whom it is
intended to be used and no person shall be allowed or required to wear a helmet not carrying
his mark or a helmet which has been worn by another person and has not since been thoroughly
disinfected.
c) Each protective helmet when in use shall be supplied with clean and not unreasonably cold air at
a rate of not less than 170 litres per minute.
d) Suitable gauntlets and overalls shall be provided for the use of all persons while performing
blasting or assisting at blasting, and every such person shall while so engaged, wear the gauntlet
and overall provided.
5. Precautions in connection with cleaning and other work.-
a) Where any person is engaged upon cleaning of any blasting apparatus or blasting enclosure or
any apparatus or ventilating plant connected therewith or the surroundings thereof or upon any
other work in connection with any blasting enclosure or with any apparatus or ventilating plant
connected therewith so that he/she is exposed to the risk or inhaling dust which has arisen from
blasting, all practicable measures shall be taken to prevent such inhalation.
b) In connection with any cleaning operation referred to in paragraph 5, and with the removal of
dust from filtering or settling devices all practicable measures shall be taken to dispose of the dust
in such a manner that it does not enter the air of any room. Vacuum cleaners shall be provided
and used wherever practicable for such cleaning operations.
6. Storage accommodation for protective wear.- Adequate and suitable storage accommodation for the
helmets, gauntlets and overalls required to be provided by paragraph 5 shall be provided outside and
conveniently near to every blasting enclosure and such accommodation shall be kept clean. Helmets,
gauntlets and overalls when not in actual use shall be kept in this accommodation.
7. Maintenance and cleaning of protective wear.- All helmets, gauntlets, overalls and other protective
devices or clothing provided and worn for the purpose of this schedule, shall be kept in good condition
and sofar as is reasonably practicable shall be cleaned on every week day in which they are used.
Where dust arising from the cleaning of such protective clothing or devices is likely to be inhaled,
all practicable measures shall be taken to prevent such inhalation. Vacuum cleaners shall, wherever
practicable, be used for removing dust from such clothing and compressed air shall not be used for
removing dust from any clothing.
8. Maintenance vacuum cleaning plant.- Vacuum cleaning plant used for the purpose of this schedule
shall be properly maintained.
9. Medical facilities and records of examinations and tests.-
a) The occupier of every factory to which the schedule applies shall-
i) employs a qualified medical practitioner for medical surveillance of the workers employed
therein whose appointment shall be subject to the approval of the Chief Inspector-cum-
Facilitator;
ii) provide to the said medical practitioner all the necessary facilities for the purpose referred
to in clause (a).
b) The record of medical examinations and appropriate tests carried out by the said medical
practitioner shall be maintained in a separate register approved by the Chief Inspector-cum-
Facilitator, which shall be kept readily available for inspection by the Inspector- cum-Facilitator.
10. Medical Examination by the Medical Officer.-
a) Every worker employed in any of the processes to which this schedule applies shall be examined
by a Medical Officer within 15 days of his first employment. Such examination shall include
pulmonary function test and chest X-ray. No worker shall be allowed to work after 15 days of his
employment in the factory unless certified fit for such employment by the Medical Officer.
b) Every worker employed in the said processes shall be re-examined by Medical Officer at least
once in every 12 Calendar months and such re-examination shall, whenever the Medical Officer
considers appropriate include pulmonary function tests and chest X-ray once in every three years.
c) The Medical Officer after examining a worker, shall issue a Certificate of Fitness in FORM VI.
The record or examination and re-examinations carried out shall be entered in the Certificate
and the Certificate shall be kept in the custody of the manager of the factory. The record of each
examination carried out under sub-paragraphs (1) and (2) including the nature and the results
tests, shall all so be entered by the Medical Officer in health register in FORM-V.
d) The certificate of Fitness and the health register shall be kept readily available for inspection by
the Inspector-cum-Facilitator.
e) If at any time the Medical Officer is of the opinion that a worker is no longer fit for employment
in the said processes on the ground that continuance therein would involve special danger to
the health of the worker, he/she shall make a record of his findings in the said certificate and the
health register. The entry of his findings in those documents should also include the period for
which he/she considers that the said persons are unfit for work in the said process. The person so
suspended from the process shall be provided with alternative 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.
f) No person who has been found unfit to work in the said in sub-paragraph (5) above shall be
re-employed or permitted to work unless the Medical Officer, after further examination, again
certifies him fit for employment in those processes.
11. Restrictions in employment of young persons.-
a) No person under 18 years of age shall be employed in blasting or assisting at blasting or in any
blasting chamber or in the cleaning of any blasting apparatus or any blasting enclosure or any
apparatus or ventilating plant connected therewith or be employed on maintenance or repair
work at such apparatus, enclosure or plant.
b) No person under 18 years of age shall be employed to work regularly within 20 feet of any blasting
enclosures unless the enclosure is in a room and he/she is outside that room where he/she is
effectively separated from any dust coming from the enclosure.
12. Power to exempt or relax.-
a) If the Chief Inspector-cum-Facilitator is satisfied that in any factory or any class of factory, the
use of sand or other substance containing free silica as an abrasive in blasting is necessary for a
particular manufacture or process (other than the process incidental or supplemental to making
of metal castings) and that the manufacture or process cannot be carried on without the use of
such abrasive or that owing to the special conditions or special method of work or otherwise
any requirement of this schedule can be suspended either temporarily or permanently, or can
be relaxed without endangering the health of the persons employed or that application of any of
such requirements is for any reason impracticable or inappropriate, he/she may, with the previous
sanction of the State Government by an order in writing exempt the said factory or class of factory
from such provisions of this schedule, to such an extent and subject to such conditions and for
such period as may be specified in the said order.
b) Where an exemption has been granted under sub-paragraph (1), acopy of the order shall be
displayed at a notice at a prominent place at the main entrance or entrances to the factory and
also at the place where the blasting is carried on.