IS 9474 : 1980 Specification for Principles of Mechanical Guarding of Machinery

UDC 621.9 - 783.31 PGD 35

1 Scope

1.1 This standard enunciates the principles of mechanicalguarding of machinery and outlines certain broad principles thatare applicable to all guarding situations. A few illustrationsshowing the techniques of mechanical guarding as applied tospecific machines are given in Appendix D.

1.2 Even where specific devices or methods are mentioned in thisstandard, other devices or methods which will ensure equally goodsafety may be used.

1.3 Machinery which cannot be guarded in accordance with legalrequirements under Factories Act, 1948, while remainingcommercially practicable or mechanically useful, should not beused. It must be borne in mind that absence of injury fromoperating a machine is no proof that the machine is safe foroperation.

1.4 The mere technical fulfillment of these requirements doesnot ensure proper safeguarding if examination shows lack ofpracticability and/or durability.

2 Reference

IS 5966 : 1970Specification for nonconiferous timber in converted fromfor general purpose