The Occupational Safety, Health and Working Conditions (Andhra Pradesh) Rules, 2026
Schedule XVII
Official text
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MANIPULATION OF STONE OR ANY OTHER MATERIAL CONTAINING
FREE SILICA
1. Application:-
This Schedule shall apply to all factories or parts of factories in which
manipulation of stone or any other material containing free silica is carried
on. This shall include the manufacturing processes pertaining to Stone
Crushers, Gem and Jewelry, Slate Pencil Making, Agate Industry, Cement
Industry, Pottery and Glass Manufacturing.
2. Definitions:-For the purpose of this Schedule-
(a) “manipulation” means crushing, breaking, chipping, dressing, grinding,
sieving,mixing,grading or handling of stone or any other material
containing free silica or any other operation involving such stone or
material;
(b) “stone or any other material containing free silica” means a stone or any
other solid material containing not less than 5 percent by weight of free
silica.
3. Preventive Control Measures:—
No manipulation shall be carried out in a factory or part of a factory unless
the following preventive control measures are adopted, namely:-
(1) Engineering Control Measures:
(a) Wet Methods:
(i) Air borne Silica Dust should be minimized or suppressed by applying water
to the process or cleanup;
(ii) Water should be provided for drilling or sawing of concrete or masonry,
(b) Ventilation:
(i) An effective Local exhaust system should be provided and maintained to
control/remove silica dust from industrial processes.
(ii) Dilution / ventilation may be used to reduce free silica dust concentration
to below the permissible limits in large areas.
(iii) Dust collectors / High Efficiency Particle Air filter (HEPA) should be set up
so that dust shall be removed from the source and all transfer points to
prevent contaminating work areas.
(iv) Ventilation systems should be kept in good working conditions.
(c) Isolation:
(i) Containment methods should be used while carrying out sand blasting.
(ii) Cabins of vehicles or machinery cutting and drilling that might contain free
silica should be enclosed and sealed.
(d) Dust Control:
(i) Vacuum System with High Efficiency Particle Air(HEPA)filter shall be used
to remove dust from work area sand at all transfer points.
(ii) The belt conveys or transferring crushed material shall be totally enclosed
throughout its length.
Provided that such control measures as above said are not necessary
if the process or operation itself is such that the level of dust created and
prevailing does not exceed the permissible limit of exposure specified in
Rule 49
(2) Medical Control Measures:
(1) The occupier of every factory to which the schedule applies, shall
a. employ a Health Surveillance Officer for medical surveillance of the
workers employed therein.
b. provide to the said Health Surveillance Officer all the necessary facilities for
the purpose referred to in clause (a).
(2) Workers employed in this scheduled process / operation shall be medically
examined by the Health Surveillance Officer-
i. Once before employment, to ascertain the physical fitness of the person to
do the particular job:
ii. Once in a period of six months, to ascertain the health status of all the
workers in respect of occupational health hazards to which they are
exposed; and in cases where in the opinion of the Health Surveillance
officer it is necessary to do so at a shorter interval in respect of any
workers.
(3) The pre employment medical examination shall include pulmonary function
test and chest Xray -Posterior Anterior (PA) view to be compared with
standard International Labour Organisation (I.L.O) Radiographs on
Pneumoconiosis which shall be read by a radiologist specialized / trained in
the said field.
(4) The periodical re-examination shall, wherever the Health Surveillance
Officer considers appropriate, include all the tests of pre-employment
except the chest X-ray which shall be carried out at least once in three
years.
(5) The record of the examinations referred to in sub-paragraph (2) shall be
maintained in Health Register in Form: HR which shall be kept readily
available for inspection by the Inspector-cum-Facilitator.
(6) No person shall be employed for the first time without a Certificate of
Fitness in Form: XVII granted by the Health Surveillance officer. If the
Health Surveillance officer declares a person unfit for being employed in
any process covered under sub-rule(1),such a person shall have the right
to appeal to the Inspector-cum-Facilitator who shall refer the matter to the
Medical Officer whose opinion shall be final in this regard. If the Inspector-
cum-Facilitator is also a Medical Officer, he may dispose of the application
himself.
(7) Any findings of the Health Surveillance 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
worker and communicate his findings to the occupier within thirty days. If
the Medical Officer is of the opinion that the workers examined is required
to be taken away from the process for health protection, he will direct the
occupier accordingly, who shall not employ the said worker in the same
process. However, the worker so taken away shall be provided with
alternate placement unless he is in the opinion of the Medical Officer, fully
incapacitated in which case the worker affected shall he suitably
rehabilitated.
(8) A Medical Officer on his own motion or on a reference from an Inspector-
cum-Facilitator may conduct medical examination of a worker to ascertain
the suitability of his employment in the scheduled Process/operation or for
ascertaining his health status. The opinion of the Medical Officer in such a
case shall be final. The fee required for this medical examination shall be
paid by the occupier.
(9) The worker taken away from employment in any process under sub-rule
(2) may 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.
(4) Administrative Control Measures:
(a) Work place/Environment Monitoring:
The occupier to ensure work place / environment monitoring to be
performed to determine magnitude of exposure / concentration to evaluate
engineering controls, selecting respiratory protection, work practices and
the need for medical surveillance.
(i) Exposure / concentration measurements should be made in the
Workers’ actual breathing zone.
(ii) Total sampling time shall be at least seven hours.
(iii) Work place / Environment Monitoring shall be repeated quarterly.
(iv) The report of dust sampling by occupier shall be made available to the
public.
(b) Training/Awareness: Workers shall be trained in the following:-
(i) Health effects of free silica dust exposure.
(ii) Operations and material that produce free silica dust hazards.
(iii) Engineering control sand work practice controls that reduce dust
concentration.
(iv) The importance of good house keeping and cleanliness.
(v) Proper use of personal protective equipment such as respirators etc.
(vi) Personal hygiene practices to reduce exposure.
(c) Maintenance of floors:
(i) All floors or places where fine dust is likely to settle on and where on any
person has to work or pass shall be of impervious material and
maintained in such condition that they can be thoroughly cleaned by a
moist method or any other method which would prevent dust being air
borne in the process of cleaning once at least during each shift.
(ii) For this purpose, dry sweeping or compressed air shall be used for
cleanup of dust or wet methods or vacuum system with a High Efficiency
Particle Air (HEPA) filter shall be used.
(iii) Dust on over head ledges and equipment should be removed before it
becomes air borne due to vibration traffic and random air current.
(d) Change room and washing facilities:
(i) Washing and bathing facilities shall be conveniently located at a place
easily accessible to the workers.
(ii) Cloak room with individual lockers shall be provided for workers to store
uncontaminated clothing.
(iii) Workers shall take bath and change the work clothes before they leave
the work site.
(iv) Work clothes shall not be cleaned by blowing or shaking.
(v) Eating/lunch areas shall be located away from exposed areas.
(e) Display of Notices:
(i) Warning signs/Posters shall be displayed conspicuously in a prominent
place.
(ii) The Warning signs/Posters hall contain the Hazards and precautions to
be taken.
(iii) The display of notice shall be in the local language and also in the
language understood by the majority of the workers.