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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“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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“Invent a New India Using Knowledge”

है”ह”ह

IS 7155-4 (1990): Code of recommended practice for conveyorsafety, Part 4: Vibrating conveyor/feeder [MED 6:Continuous Bulk Conveying, Elevating, Hoisting AerialRopeways and Related Equipment]

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IS 7155 ( Part 4) : 1990

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Indian Standard

CODE OF RECOMMENDED PRACTICE FOR CONVEYOR SAFETY

PART 4 VIBRATING CONVEYOR/FEEDER

( First Revision )

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UDC 621’867’52 : 614’8 : 006’76

@ BIS 1991

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

NEW DELHI 110002

January 1991 Price Group 1

Conveyors, Vertical Hoists and Bucket Elevators Sectional Committee, HMD 06

FOREWORD

This Indian Standard ( Part 4) ( 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 had been approved by the Heavy Mechanical Engineering Division Council.

Vibrating conveyors differ from other types of conveying machines, inas much as the movement of the load/material on the pan is determined by the weights of the vibrating masses, and the characteristics of the exciting forces and the opposing forces of resistance. The load moves over the greater part of the conveyor by micro-leaps. This eventually saves power of transportation with considerable lesser wear on the load carrying members. for granular and loose materials.

These conveyors are generally used

IS 7155 : 1974 ‘Code of practice 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 4 of the standard is one of the series of Indian Standards Code of recommended practice for conveyor safety. The other parts of the standard are:

Part 1

Part 2

Part 3

Part 5

Part 6

Part 7

General information

General safety requirements

Belt conveyors and feeders

Apron conveyors/Apron feeders

Selection, training and supervision of operators

Inspection and maintenance

In the preparation of this standard reference was made to the following publications:

IS0 1819-1977 ‘Continuous mechanical handling equipment-Safety code-General rules’, issued by the International Organization for Standardization,

IS0 7149-1982 ‘Continuous handling equipment-Safety code-Special rules’, issued by the International Organization for Standardization, and

AS CZ 15-1971 ‘SAA conveyor safety code’, issued by the Standards Association of Australia.

Other related Indian Standards available are:

IS 12400 : 1988 Code of practice for selection of electro-magnetic feeder

IS 12401 : 1988 Code of practice for selection of mechanical vibrating feeder

IS 7155 ( Part 4 ) : 1990

Indian Standard

CODEOFRECOMMENDEDPRACTICEFOR CONVEYORSAFETY

PART 4 VIBRATING CONVEYOR/FEEDER

( First Revision )

1 SCOPE

1.1 This standard ( Part 4 ) covers specific safety requirements for vibrating conveyor/feeder. These requirements are in addition to the information given in IS 7155 ( Part 1) : 1986 ‘Code of recommended practice for conveyor safety: Part 1 General information’ and the general safety requirements given in IS 7155 ( Part 2 ) : 1986 ‘Code of recommended practice for conveyor safety: Part 2 General safety requirements’.

1.2 These safety requirements shall apply to various types ( depending on the type of drive used ) of vibrating conveyors/feeders such as self-balancing interia type, partially balanced type, eccentric actuation type and electro- magnetic actuation type.

2 SPECIFIC SAFETY REQUIREMENTS

2.1 Besides statutory and other requirements relating to safety in general, specific safety requirements shall be observed at the following stages:

a>

b)

4

During the construction stage ( design, and manufacture );

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

During the utilization stage ( operation and maintenance ).

2.2 During the Construction Stage ( Design and Manufacture )

2.2.1 Design of the vibrating conveyor/ feeder shall be done keeping in view the various parameters, to obtain the selected capacity, speed of transportation of material under the influence of vibrator and minimum material depth on the pan.

2.2.2 It shall be ensured that after installation the material fed into the vibrating conveyor/ feeder shall be regulated and compatible with the selected/designed capacity of the conveyor/ feeder.

2.2.3 The various parameters during design and construction shall be selected in such a way that vibrating conveyor/feeder shall be suitable to operate above, at or below its resonance point so that distinct advantages are availed off and drawbacks avoided.

2.2.4 Dynamic loads, in addition to static loads, shall be carefully analysed and care shall be taken for such loads while deciding/designing the vibration damping arrangement(s) and the foundation of the conveyor/feeder.

2.3 During the Installation Stage

2.3.1 Clearance between the trough and any external stationary structure shall not be less than 75 mm.

2.3.2 A clear space of not less than 600 mm shall be provided between the moving end of vibrating conveyor/feeder and any fixed structure in cases of installations without walkways.

2.3.3 The conveyor/feeder shall be installed in such a way that accumulation of materials shall not dampen the normal oscillation of the conveyor/feeder.

2.3.4 Adequate and suitable guards shall be provided for all moving parts.

2.4 During Utilization Stage ( Operation and Maintenance )

The material fed into the vibrating conveyor/ feeder shall be so regulated (see 2.2.2 ) as not to exceed the capacity requirements of the conveyor/feeder.

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Revision of Indian Standards

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Dot : No. HMD 06 ( 5130 )

Amendments Issued Since Publication

Amend No. Date of Issue Text Affected

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