Safety operating procedures for tower crane lifts


Safety operating procedures for tower lifts
(1) The track foundation or concrete foundation of the tower crane must be designed and checked, and it must be used after acceptance. Slope and drainage facilities should be built around the foundation and a certain safe distance should be maintained with the foundation pit.
(2) The soil carrying capacity of the tower lifting base must be strictly in accordance with the original plant use regulations or meet: medium tower is 8 to 12 t/m2, and heavy tower is 12 to 16 t/m2.
(3) The lifting shall be disassembled and installed by a specialized team that has obtained the qualification certificate issued by the competent administrative department for construction. Technical and safety personnel shall be present and supervised during the disassembly.

K439A Mast Section

(4) The disassembly personnel shall wear safety and protective articles, and wear safety belts when working high, and be familiar with the disassembly process and operating procedures.
(5) No lifting, installation or disassembly shall be carried out when the wind reaches level 4 or above. The connection of various parts of the hydraulic lifting system must be checked before lifting. It is strictly forbidden to turn the boom and other work when climbing.
(6) After the tower crane is installed, it shall undergo technical inspection and adjustment of the whole machine, and it shall be delivered for use only after the whole machine has passed the inspection in phases.

In the absence of load, the vertical deviation between the tower body and the ground must not exceed 4/1000. The motor and hydraulic parts of the tower crane shall be carried out in accordance with the relevant provisions concerning electric motors and hydraulic devices.
(7) The metal structure of the tower crane, the track and the metal shell of all electrical equipment shall have a reliable grounding device, and the grounding resistance shall not be greater than 4 Ω, and lightning avoidance devices shall be set up.
(8) The arrangement, spacing and wall distance of the poles of each attachment device shall be in accordance with the original regulations, and the design calculation book for the self-made poles shall be provided.
(9) Tower lifts must not be located near overhead transmission lines. If the conditions are limited to the site, safety and protection measures must be taken when operating along the line. The safety distance between the tower crane and overhead transmission wire should meet the regulations.

K439A Mast Section

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