OSHA Safety & Health Regulations for Construction 1926.552(c)(15)
Following assembly and erection of hoists, and before being put in service, an inspection and test of all functions and safety devices shall be made under the supervision of a competent person. A similar inspection and test is required following major alteration of an existing installation. All hoists shall be inspected and tested at not more than 3-month intervals.
The employer shall prepare a certification record which includes the date the inspection and test of all functions and safety devices was performed; the signature of the person who performed the inspection and test; and a serial number, or other identifier, for the hoist that was inspected and tested. The most recent certification record shall be maintained on file.
The use of water weights for proof load testing produce significant savings when certifying construction hoists.
Specifications and installations are generally governed by OSHA 1926.552 and ANSI 10.4 standards. The requirements include a "drop test" as part of the final inspection and certification.
Traditionally tested using solid weights, the process is very cumbersome requiring the use of ancillary lifting equipment for hauling and staging the weights for testing.The bags when empty are packaged to a very light and small size. No support lifting equipment is required shaving a significant part of the cost, time, and labor when transporting and testing.
With Water Weights, the amount of water supplied to the bag is controlled from a manifold assembly running through a certified flow meter to achieve a variety of weights without having to load and unload the hoist car.
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