What is the proof load for testing a new 15-tonne crane?

The crane should be tested at 125% of its Safe Working Load (SWL), which is 18.75 tonnes, as per Table 1.

How often does a lifting appliance need to be thoroughly examined?

A thorough examination by a competent person is required at least once every 12 months, or after substantial alterations or repairs (Clause 4.1.2).

What should be done if the crane operator cannot see the load?

A designated signalman must be used. A recognized code of signals, like those in Appendix A, must be employed to direct the operator (Clause 8).

Is it permissible to lift people using a crane?

No person shall be raised, lowered or carried by a crane, except on the driver's platform or in a properly suspended cage specifically designed for that purpose and with adequate safety measures (Clause 7.15).

IS 8189

: 1976

Code of practice for safety in use of cranes, derricks and other hoisting appliances

CurrentFrequently UsedSafety CodeGeneral · Construction Safety and Practices

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This code of practice outlines the safety requirements for the use, inspection, testing, and maintenance of cranes, derricks, and other hoisting appliances. It aims to prevent accidents by providing guidelines on safe working loads, proper erection, load handling procedures, and standardized signaling.

Lays down safety requirements for the installation, operation, maintenance, and testing of cranes, derricks, and other hoisting appliances.

Quick Reference Values

Proof load for cranes up to 20t capacity125% of SWL

Proof load for cranes over 20t to 50t capacitySWL + 5 tonnes

Frequency of thorough examinationAt least once every 12 months

Minimum factor of safety for hoisting ropes6

Maximum permissible wind speed for crane operationAs specified by manufacturer (typically ~12.5 m/s or 45 km/h)

Practical Notes

This code is foundational for site safety plans involving lifting operations and is often supplemented by the manufacturer's specific guidelines.

Compliance with this standard is critical for fulfilling legal obligations under The Building and Other Construction Workers (BOCW) Act and state Factory Rules.

The role and qualification of the 'Competent Person' responsible for testing and examination should be clearly documented as per regulations.