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RESPIRATORY
EQUIPMENT TESTINGLABORATORY (RETL) FACILITIES
AVAILABLE FOR TESTING OF RESPIRATORY PERSONAL PROTECTIVE EQUIPMENT (RETL)
INTRODUCTION
Most of the chemicals that are used,
handled, processed or manufactured in industries are harmful to the workers in varying
degrees. These chemicals may be toxic, corrosive or carcinogenic and may cause health
hazards through inhalation, ingestion or skin absorption. Technological measures are
practiced in many industries to control toxic contaminants in work environment. However,
there are situations when the use of respiratory devices becomes vital and essential.
Most of the Personal Protective Equipment
(PPE) are manufactured in the small scale enterprises. These small scale industries do not
possess adequate resources and facilities for testing raw materials and the finished PPE
as per the Specifications laid down in relevant Standard prescribed by the Bureau of
Indian Standards (BIS). They do not also have the research and developmental facilities.
Technical guidance and advice is also not readily available to them for improving the
quality of these equipment.
It has been observed from the Hand Book of
Labour Statistics (1992), of Labour Bureau, Ministry of Labour, Government of India,
Chandigarh/Shimla that every year more number of workers get exposed to the various types
of chemicals and contract occupational diseases. Thus, PPE play an important role in
safe-guarding the health of the industrial workers from various occupational diseases,
provided they meet the requirements of the specified standard of BIS.
OBJECTIVE
The main objectives of Respiratory
Equipment Testing Laboratory are :
- to develop testing facilities to assess the performance and
efficiency of the various respiratory PPE as per BIS Specifications.
- To render Technical advice to the manufacturers on the
functional efficiency and the quality improvement and guidance to the user industries on
selection, use, care and maintenance of the respiratory PPE.

AMENDMENT IN THE FACTORIES ACT
First Schedule {Section 2 (cb)} of the
Factories (Amendment) Act, 1987 provides the list of 29 different industries involving
hazardous processes.
Second Schedule (Section 41-F) lists the
permissible levels of 117 toxic chemicals causing various occupational diseases by
entering into body through the vital respiratory mode. In view of this, it is of foremost
importance to use various respiratory PPE as the preventive measures against these toxic
chemicals.
Rule 81 of Model Rules under the Factories
Act, 1948 (corrected upto 31.3.1987), Government of India, prescribes the use of various
PPE.
ACHIEVEMENTS
- Disposable dust masks
A simple, inexpensive, comfortable and
disposable type dust mask was developed by this Laboratory. It was made from low cost
man-made fibres by the die-punch moulding technique. Developed masks were subjected to
performance tests in accordance with the U.S. Bureau of Mines specifications. Extensive
work was carried out on these masks to determine the performance parameters such as
filtering efficiency, breathing resistance and mechanical strength. The complete know-how
data was transferred to the National Research and Development Corporation (NRDC), New
Delhi for its transmission to the industries for its commercial production.
- Present Testing Facilities :
Now, this Laboratory is equipped with the
facilities to undertake the testing of canister, cartridge type respirators and dust
respirators as per the Standard specifications laid down by the BIS.
Canister and cartridge type respirators are tested against
the following gases and vapour.
- Chlorine
- Ammonia
- Sulphur dioxide
- Hydrogen sulphide and
- Organic vapour.

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TYPES OF RESPIRATORY PROTECTIVE EQUIPMENT AND RELATED
TESTS
Type of PPE BIS Standard and related Tests
Type of PPE BIS Standard and related Tests |
| CANISTER
TYPE (Gas Mask) IS : 8523 1977* |
| |
Performance Tests :
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- Front or Back Mounted
|
- Breathing Resistance :
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- Chin Type
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- Inhalation Resistance and
- Exhalation Resistance
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- Escape Type
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- Life and efficiency of sorbents against
the specific gas/vapour:
- With Equilibration and
- Without Equilibration
- Valve leakage test and
- Face piece fitness test.
|
| CARTRIDGE
TYPE IS:8522 1977* |
| Similar tests as mentioned above |
| DUST
RESPIRATOR IS:9473 1980* |
| Reaffirmed
in February, 1991 |
- Breathing Resistance :
- With Equilibration and
- Without Equilibration.
- Efficiency of the filter against silica dust
- Valve leakage test
- Pressure tightness test and
- Coal dust tightness test
(face piece fitness test)
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| ASPECTS ON
WHICH THE USER INDUSTRIES ARE ADVISED |
- Type of PPE
- Quality and performance
- Workers views/suggestions towards the
acceptability/suitability of PPE
- Managements views
- Awareness to proper selection, use, care and maintenance of
PPE.
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| ASPECTS
CONSIDERED FORADVISING THE MANUFACTURE |
- Anthropometric data.
- Ergonomic design
- Convenience and comfort during use
- Quality and reliability and
- Suitability under tropical conditions
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INSTITUTIONAL FEE
Institutional fee is nominal and is basically
promotional in nature. The current institutional fee for the service
rendered by the Laboratory for testing of various types of respiratory
PPE is levied as given below:
Respiratory
Personal Protective Equipment
|
Sl.
No.
|
Type
of Respirator
|
Institute
Fee (Per Sample)
|
|
1
|
Canister
Type
|
Rs. 660/-
|
|
2
|
Combination
of Cartridge and Mechanical Type (Particulate Filter)
|
Rs. 660/-
|
|
3
|
Cartridge
Type
|
Rs. 660/-
|
|
4
|
Mechanical
Type
|
Rs. 660/-
|
|
5.
|
Breathing
Air Cylinder
|
Rs. 660/-
|
...
Non Respiratory Testing laboratory
(NRTL)
Facilities available FOR testing of non
respiratory personal protective equipment (NRPPE)
Adequate protection of body is essential in
order to ensure the safety of human life at work in every industry though the nature of
protection varies from industry to industry and is dependent not only on the type of
operation but also on the kind of hazard associated. Personal Protective Equipment (PPE)
are always recommend for use in industry to protect the workmen against physical,
chemical, and biological agents which possess hazard potentials of causing harmful health
effects to the workers. Various engineering control method and technologies are generally
applied to minimise the degree and intensity of such occupational hazards ,but in case of
certain industrial hazards ,but in case of certain industrial situations ,there is no
choice but to recommend the use of PPE . The magnitude of use of problem of using PPE in
industries have increased in the recent years due to the growth of modern technologies and
effective safety awareness programme.
It has been well recognized that the degree
of protection provided by the PPE to the workers greatly depends upon their selection,
use, and the extent of their performance in actual operation. The use of Personal
Protective Equipment (ppe) by the employees in the factories under different situations,
is a statutory provisions made under Sections 32,35 and 36 of the Factories Act, 1948. The
Bureau Of Indian Standards (BIS) has brought out many standards on Personal Protective
Equipment for protection of eyes, face, ears, feet, legs ,hand, head, etc. in addition to
guidelines for selection and use of such equipment. However, the testing facilities
available in the few institutes in the country is not sufficient to ensure the quality of
products as per the Bureau Of Indian Standards.
Therefore ,the Central Labour Institute ,
Mumbai has set up to a Non-Respiratory Equipment Testing Laboratory (NRTL) to carry out
Performance test for different types of PPEs as per the standards laid down by the
BIS .The laboratory is equipped with all the sophisticated equipment that are needed for
testing of PPE. At present the laboratory undertakes testing of samples of PPE and issues
performance test reports in regard to the quality of protective appliances.
The various tests that could be undertaken by the laboratory
as per the standards of the BIS are given in details.

| Types of Personal Protective Equipment and Various Tests |
| Name of PPE |
Tests
that are carried out |
| Safety
Helmet |
IS:2925-1984
Clearance above the head and the wearing
height
Shock absorption resistance
Penetration resistance
Flammability Resistance
Water Absorption
Heat Resistance
Sterilization
Corrosion Resistance of metal parts
|
Eye Protectors
Safety Goggles
Safety Spectacle |
IS:5983-1980 IS:7524(Part-I)-1979
Non-Optical tests
- Stability at elevated temperature
- Test for Robustness
- Resistance to corrosion of metal parts
- Suitability for Disinfection
- Proof against chemical splashes
IS:7524(Part-II)-1979
Optical Tests
Spherical, cylindrical and Prismatic powers
Determination of transmittance (UV/VIS/IR)
Quality of material & Surface
|
Welding Helmets
Welding Hand Shield |
IS:
1179 -1967
- Corrosion Resistance of metal parts
- Disinfection
- Flammability
|
Filter :--
Welding Filter ,Ultra Violet
Filter, Infra Red Filter
|
IS:1179-1967/IS:5983-1980
- Stability at elevated temperature
- Optical-Power Spherical , Daylight Filter Cylindrical ,
Prismatic
- Robustness
- Transmittance
|
Filter Cover |
IS:1179-1967/IS:5983-1980
- Stability at elevated temperature
- Optical-Power Spherical , Daylight Filter Cylindrical
, Prismatic
- Robustness
- Transmittance
|
Visor |
IS:9973-1981
- Impact Resistance
- Penetration Resistance
- FlammabilityPower
- Spherical & Cylindrical Prismatic
- Transmittance
|
Face Shield with Plastic Visor
|
IS:8521(Part-I)-1977
IS:8521(Part-I)-1994
Visual and Dimensional Examination
Impact Resistance
Visible Transmittance
Flammability
Disinfection
|
Safety Shoes
(a)Leather Safety Shoes |
IS:5852-1996
/ IS:11226 1993
- Impact test for protective steel toe caps
IS:5914-1970
- Leather Sole Apparent density
- Water Absorption
- Total Ash
- pH of water soluble
IS:11226-1993/IS:13469-1992
Rubber/ PVC Sole and
heels
- Flex Resistance testing (Ross Flexing)
IS:3400(Part-XVI-)/12240(Part-7)
- Relative DensityIS:3400-1978
(Part-IX)/12240(Part-3)
- HardnessIS3400(Part-II)/ 12240(Part-6)-1988
- Electrical resistivity(Antistatic)
IS:3400(Part-XV)-1971
- Oil ResistanceIS:11226/13469-1992
- Chemical Resistance IS:11226-1993/IS:13469-1992
Tensile Strength
Elongation at
breakIS:11226-1993/IS:13469-1992
IS:2961-1973 IS:5677-1986
Chrome upper leather
- Tensile Strength
- Elongation at Break
- Water absorption
- Stitch tear strength
- Tongue tear resistance
- Heat Resistance
- Chromium content as Cr2O3
- Rubber PVC Sole and heels
- Flex Resistance testing (Ross Flexing)
IS:3400(Part-XVI-)/12240(Part-7
- Relative DensityIS:3400-1978 (Part-IX)/12240(Part-3)
- HardnessIS3400(Part-II)/12240(Part-6)-1988
- Electrical resistivity (Antistatic) IS:3400(Part-XV)-1971
- Oil ResistanceIS:11226/13469-1992
- Chemical Resistance IS:11226-1993/IS:13469-1992
- Tensile Strength
- Elongation at break IS:11226-1993/IS:13469-1992
|
(b) Rubber /PVC Knee Boots ( Gum Boots ) |
IS:12254-1993
IS-13695-1993
Rubber/PVC Sole and heels
Impact test (IS:12254)
Thickness
Flex resistance testing (Ross
Flexing) IS:3400(Part-XVI-)/12240(Part-7)-1988.
HardnessIS3400(Part-II)/12240(Part-6)-1988
Lead Content IS:12254-1993
Volatility IS:12254-1993
Relative Density
IS:3400(Part-IX)-1978/IS:12254-1993
Tensile Strength and elongation at
break IS: 12240 (Part-6)-1988
IS:13695-1993/IS:12254-1993
Rubber upper
testing
Thickness
Relative density
Hardness
Aging tests-heat treatment
IS-3400(Part-IV)
Adhesion test fabric and
rubber IS-3400(Part-V)
Oil Resistance test
Air leakage Resistance
|
Hand
protectors
- Safety Gloves(Natural Rubber Synthetic Rubber etc.)
|
IS:4770-1991
Thickness
Tensile Strength
Elongation at break
Tear strength
Tension set
Tensile Stress at 200% elongation
Moisture Absorption
After ageing
Tensile Strength
Elongation at break
Test Potential and Leakage current
Breakdown voltage
|
- Safety Clothing /SafetyGloves (
Leather )
|
IS:2573-1986
- Size and Dimension
- Tensile Strength
- Elongation at break
- Crackiness of grain
- Chromium Content
- pH value
|
- Hand protectors Safety Clothing
(PVC Coated fabrics Double textured rubberized Water proof ness fabrics)
|
IS:6110-1983 IS:3322(Part-I)-1987
Water proofness test
Breaking Strength
Longitudinal direction
Transverse direction
Accelerated Ageing
Resistance to cold
Resistance to acid & alkali.
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INSTITUTIONAL FEE
The present charges for the services rendered by the
laboratory for testing of different types of Non-Personal Protective Equipment
are given below:
Non-
Respiratory Personal Protective Equipment
|
Type
of Respirator
|
Institute
Fee (Per Sample)
|
|
Safety
Goggles, Safety Helmet, Face Shield, Safety Hand-gloves, Safety Ear Muff
and Ear Plug, Chemical Apron / Suit
|
Rs. 660/-
|
|
Steel
toe cap and Upper Leather and Sole of Safety shoe
|
Rs. 1980/-
|
|
Safety
Belt & Full Body Harness
|
Rs. 2200/-
|
* The
samples along with institute fee (Demand Draft in favour of Central Labour
Institute, Mumbai) should be submitted 15 days in advance for
reports.
Flame
Proof Equipment Approval
Flameproof Enclosures
Approval
DGFASLI is the approving authority
for granting approvals to the flameproof enclosures being used in manufacturing process
covered by the Factories Act, 1948, as per IS: 2148-1981. DGFASLI is also granting
approvals to other equipment like increase safety, intrinsically safe equipment, subject
to the fulfillment of the requirements of the Code of Practice IS 13408 (Part I)-1992.
(A) The process of certification:
- Equipment has to be tested by approved testing authority.
- Carbon copy of test report of the equipment and attested
copy/copies of drawing(s) certified by the testing authority must be submitted for
approval
- Chemical composition analysis of light material used such as
LM4, LM6 must be carried out in a Government recognized testing laboratory and a copy of
the report shall be submitted along with the proposal. The chemical analysis report shall
be of the material used for the prototype.
- For gas Group II C enclosures in addition to the requirements
at 1, 2 & 3 above, the details of the client to whom the equipment is being supplied
shall be furnished.
- The approval for gas Group II A and II B pro-type is valid for
a period of five years after which it shall be revalidated.
- PROCEDURE FOR REVALIDATION OF APPROVAL
- The party/manufacturer shall submit the proposal
for revalidation to DGFASLI at least three months in advance along with application for
revalidation of approvals and following documents :
- the mailing list of customers, along with their contact
numbers, to whom the equipment has been supplied;
- a certificate on the letter head of the company/firm that such
equipment for revalidation has/have not undergone any change in design during the period
and that the equipment has/have been manufactured strictly in accordance with the drawing
specifications certified by the testing authority and is/are identical with the one tested
and certified by the testing authority.
- a copy of the valid BIS licence duly attested by the
company/firm;
- a copy of approval(s) including permissible variations, issued
by DGFASLI, duly attested.
- For further validation of approval of such
equipment after five years (i.e. 10 years from the first approval), further approval shall
be issued after re-testing of the said equipment by approved testing authority. The
procedure for approval shall be as per instruction given in (A) above.
- OTHER IMPORTANT INFORMATION
- The approval no. and date of DGFASLI approval must be inserted
in the nameplate of the equipment.
- Obtaining licence from BIS, on approval from DGFASLI, is a
must.
- Approval may be amended, reviewed or withdrawn, if considered
necessary. Any violation/deviation observed in any manner shall result in revocation of
the approval issued.
- Officials of DGFASLI dealing with subject matter shall
visit the unit manufacturing flameproof electrical equipment as necessary. The compliance
report on the basis of suggestion/observation made by him/them in his/their report shall
be required to be submitted to DGFASLI in the prescribed
time limit.
After getting the
proposal from the manufacturer, the same is scrutinized and if found in order in all
respects, the approval is granted within a period of five weeks. In case of any
discrepancies, the same is conveyed to the party within a period of one week.

Material Safety Data Sheet
MSDS
Occupier of every factory involving hazardous process is statutorily
required under Section 41-B(1) of the Factories Act to disclose in a prescribed manner all
the information regarding danger, including health hazards and the measures to overcome
such hazards arising from the exposure to or handling of materials or substances in the
manufacture, transportation, storage and other processes, to the workers employed in the
factory, the Chief Inspector, the local authority within whose jurisdiction the factory is
situated and the general public in the vicinity.
Model Rule No.82-C made
under Section 41-B read with Section 112 of the Factories Act has specified that the
occupier of any factory carrying out hazardous process shall arrange to obtain or develop
information in the form of Material Safety Data Sheet (MSDS) in respect of hazardous
substances or material handled in the manufacture, transportation and storage in the
factory.
Every such MSDS sheet includes information on
identification/labeling; hazardous ingredients, physical and chemical characteristics;
potential fire, explosion and reactivity of the hazardous substances; health hazards
involved; primary root of entry; permissible limits of exposure prescribed in the Second
Schedule under Section 41-F of the Factories Act; precautions for safe handling and use of
hazardous substances; emergency and first-aid procedures, date of preparation of MSDS as
well as name, address and telephone number of the manufacturer, importer, occupier of
other responsible party, preparing or distributing the MSDS.
This division provides MSDS on request to
industries at a nominal payment, enquires can be made by writing to
Director- In charge (MIS)

National
Referral Diagnostic Centre (NRDC)
Occupational
disease assume a significant dimension in any country and more particularly, in
a developing nation like India. There
is a considerable prevalence of common disorders like lead poisoning, silicosis,
asbestosis, pesticides poisoning, occupational hearing loss, etc. among the
industrial workers.
While
the emphasis on the prevention, early diagnosis and management of occupational
diseases are well accepted as the proven strategy equally important is
facilitating for confirming the cases of occupational diseases as these involve
legal liabilities. In recognition of this need as well as in recognition of the fact that such referral facilities
are scarce in our country, a NRDC has been established by DGFASLI in the Central
Labour Institute.
Suspected
cases of occupational diseases are referred to these centers by Factory Medical
Officers, Medical Inspectors of Factories, Certifying Surgeons, Public
hospitals, etc. for opinion. The cases are physically examined, subjected to investigations at the institute and
report is given by co-relating with the occupational history before arriving at
a confirmed diagnosis. 
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