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Shenxi's mast climbing work platform meets the American’s ANSI standards 2021.10/28

Shenxi's mast climbing work platform meets the American’s ANSI standards. The new standard aims to improve and enhance safety equipment standards to make them similar to international standards. This creates more competition in the global market when providing services to companies and equipment manufacturers.


The following Standard contains provisions which, through reference in this text, constitute provisions of the Guideline. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. For undated references, the latest edition of the publication referred to applies.

ANSI A92.9 Mast-Climbing Work Platforms


For the purpose of this standard the following terms and definitions apply.

1 Rated Load. Load for which an MCWP has been designed for in normal operation, as stated in the load diagram/chart.

2 Rated Speed. Vertical or horizontal speed for which an MCWP has been designed.

3 Transfer. Any horizontal movement of an MCWP from one position to another on the same working site.

4 Transport. Any movement of an MCWP outside the boundaries of the work site.

5 Base Frame. Part of an MCWP that provides support for the mast and elevating assembly.

6 Chassis. Part of an MCWP that provides mobility and support for the mast and elevating assembly.

7 Jacks or Outriggers. Supports at the base frame level used to maintain or increase the stability of an MCWP within specified conditions. (note: they may be used for leveling)

8 Mast. Structure that supports and guides the platform.

9 Guides. Parts of the mast which provide guiding for the platform.

10 Mast Tie. Anchorage system used to provide lateral restraint to the mast from the building or other structure.

11 Work Platform. Vertical, traveling, part of the installation upon which the persons, equipment and materials are carried, and from which, work is carried out. (Note: This is as opposed to an MCWP, which refers to the whole of the installation, among others, the work platform, mast, mast ties, base and chassis. The work platform includes the main platform and any platform extension.)

12 Main Platform. Part of the work platform that is built up using primary structural elements.

13 Buffer. Resilient stop at the end of the travel, comprising a means of arresting using fluids, springs or similar means.

14 Overspeed. Any speed above rated speed.

15 Safety Mechanism. Mechanical device for stopping and maintaining the work platform stationary on the mast

in the event of overspeed.

16 Competent Person. Person who is capable of identifying existing and predictable hazards in the surroundings or working conditions which are unsanitary, hazardous, or dangerous to employees, and who has authorization to take prompt corrective measures to eliminate them.(OSHA 1926 Subpart L)

17 Qualified Person. Person who, by possession of a recognized degree, certificate, or professional standing, or who by extensive knowledge, training and experience, has successfully demonstrated his/her ability to solve, or resolve, problems related to the subject matter, the work, or the project.(OSHA 1926 Subpart L)

18 Supplier Competent Person. Person appointed by the MCWP supplier who is responsible for planning the installation, method statements for the erection, safe operation, inspection, maintenance, frequent inspection and dismantling of MCWPs.

19 User Competent Person. Person appointed by the user company who is responsible for devising safe systems of work and other aspects of use to be carried out from MCWPs.

20 Installer. Person(s) responsible for installation, including erection, modification, and dismantling of MCWPs.

21 Demonstrator. Person(s) responsible for the on-site management of safe use, inspection, servicing and maintenance of MCWPs, and the familiarization of operators on the job site.

22 User. Person(s) or entity that utilizes, or puts into operation, an MCWP.

23 Operator. A qualified person (ANSI A92.9 definition), who controls the movement of an erected MCWP.

24 Mobile MCWP installation. MCWP installation with no more than two ties, which is suitably designed for horizontal transfer on the job site.

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