Disclosure to Promote the Right To Information

Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public.

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“Invent a New India Using Knowledge”

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“Step Out From the Old to the New”

“जान1 का अ+धकार, जी1 का अ+धकार”Mazdoor Kisan Shakti Sangathan

“The Right to Information, The Right to Live”

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“Knowledge is such a treasure which cannot be stolen”

“Invent a New India Using Knowledge”

है”ह”ह

IS 7155-5 (1990): Code of recommended practice for conveyorsafety, Part 5: Apron conveyors/Apron feeders [MED 6:Continuous Bulk Conveying, Elevating, Hoisting AerialRopeways and Related Equipment]

IS7155(Part5):1990

Indian Standard

CODE OFRECOMMENDEDPRACTICE FORCONVEYORSAFETY

PART 5 APRON CONVEYORS/APRON FEEDERS

( First Revision )

UDC 621’867’152’5 : 614’8 : 006’76

0 BIS 1990

BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

November 1990 Price Group 1

Conveyors, Vertical Hoists and Bucket Elevators Sectional Committee, HMD 6

FOREWORD

This Indian Standard ( Part 5 ) ( First Revision ) was adopted by the Bureau of Indian Standards on 20 February 1990, after the draft finalized by the Conveyors, Vertical Hoists and Bucket Elevators Sectional Committee, Division Council.

hzd been approved by the Heavy Mechanical Engineering

Apron conveyor/feeder essentially consist of a drive frame, a drive, take-up, sprockets and pans fixed to chains which form the main pulling members. The pulling chains in mesh with the sprocket are driven at the head section from the drive unit, the pans move along the longitudinal axis of the conveyor and the supporting rollers rotate guiding the chain.

IS 715.5 : 1974 ‘Code of przctice for conveyor safety’ was published in 1974. Based on the experience gained in the field and to incorporate more specific safety requirements for various, types of conveyors, the revision of IS : 7155 has been taken up in various parts.

This Part 5 of the standard is one of the series bf Indian Standards Code of recommended practice for conveyor safety. The other parts of the standard are:

Part 1 General information Part 2 General safety requirements Part 3 Belt conveyors and feeders Part 4 Vibrating conveyor/feeder Part 5 Selection, training and supervision of operators Part 6 Inspection and maintenance.

In the preparation of this standard reference has been made to AS CZ 15-1971 ‘SAA conveyor safety code’ issued by Standards Association of Australia.

IS 7155 ( Part 5) : 1990

Indian Standard

CODE OF RECOMMENDED PRACTICE FOR CONVEYOR SAFETY

PART 5 APRON CONVEYORS/APRON FEEDERS

( First Revision ) 1 SCOPE

1.1 This standard ( Part 5 ) covers specific safety requirements for apron conveyors/apron feeders. These requirements are in addition to the general information and general safety requirements given in IS 7155 ( Part 1 ) : 1936 and IS 7155 ( Part 2 ) : 1986 respectively.

2 REFERENCES

IS No.

7155 ( Part 1 ) : 1986

7155 ( Part 2 > : 1986

Tirle

Indian Standard code of re- commended practice for conveyor safety: Part 1 General information

Indian Standard code of re- commended practice for conveyor safety: Part 2 General safety require- ments

3 SPECIFIC SAFETY REQUIREMENTS

Besides statutory and other requirements relat- ing to safety in general, specific safety requirements shall be observed at the follow- ing stages:

During the construction stage ( design and manufacture );

During the instaliation stage ( design, commissioning and entry into service ); and

During the utilisation stage ( operation and maintenance >.

3.1 During the Construction Stage ( Design and Manufacture )

3.1.1 At the design and construction stage, the selection of materials, hardware and components shall depend upon the duty conditions of the conveyor and characteristics of the material to be transported,

3.1.2 Chains and chain sprockets shall be suitably selected for the conveyor arrangement.

3.2 During the Installation Stage ( Design, Com- missioning and Entry into Service )

3.2.1 Proper levelling of foundation and align- ment of head and tails sections and intermediate section along with the chain tracks shall be ensured.

3.2.1.1 Alignment of drive unit shall also be ensured.

3.2.2 In the case of inclined conveyors, if required, a hold back shall be provided.

3.2.3 Adequate guarding and protection shall be provided to prevent injury to the personnel and these shall be installed at all the necessary points. A reference to IS 7155 ( Part 2 ) : 1986 may be helpful in deciding the provisions of guarding and protection to be provided.

3.3 During the Utilisation Stage (Operation and Maintenance )

3.3.1 Periodical adjustments of take-ups shall be necessary to keep the chains under the required tension and to prevent the aprons from whipping during operation.

3.3.2 Maintenance to apron conveyor/feeder shall be effected only on taking total shut-down of the system.

I Standard Mark

The use of the Standard Mark is governed by the provisions of the Bureau of Indian Standards Act, 1986 and the Rules and Regulations made thereunder. The Standard Mark on products covered by an Indian Standard conveys the assurance that they have been produced to comply with the requirements of that standard under a well defined system of inspection, testing and quality control which is devised and supervised by BIS and operated by the pro- ducer. Standard marked products are also continuously checked by BIS for conformity to that standard as a further safeguard. Details of conditions under which a iicence for the use of the Standard Mark may be granted to manufacturers or producers may be obtained from the Bureau of Indian Standards.

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Revision of Indian Standards

Indian Standards are reviewed periodically and revised, when necessary and amendments, if any, are issued from time to time. Users of Indian Standards should ascertain that they are in possession of the latest amendments or edition. Comments on this Indian Standard may be sent to BIS giving the following reference :

Dot : No. HMD 6 (5131 )

Amendments Issued Since Publication

Amend No. Date of Issue Text Affected

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