The service life of tower cranes is reduced by another 5 years, and even more so for elevators!

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The service life of tower cranes is reduced by another 5 years, and even more so for elevators! The fallout from the ban in Hainan on tower cranes with a capacity of 800 kN·m or less (including those of that capacity) has not yet subsided, and the Shenzhen Work Safety Supervision Station has introduced even stricter measures! Starting last month, the service life of tower cranes in Shenzhen will be adjusted as follows: for tower cranes with a nominal lifting torque of 800 kN·m to 1250 kN·m (not including 1250 kN·m), the service life will be reduced from 15 years to 10 years ； For tower cranes with a nominal lifting torque of 1250 kN·m or more (including 1250 kN·m), the service life has been reduced from 20 years to 15 years ； The service life of construction elevators has been reduced from 8 years to 5 years. Let’s take a look at the previous regulations regarding the service life of tower cranes. In 2006, in accordance with the \"Announcement by the Ministry of Construction on the Introduction and Promotion, as well as the Restriction and Prohibition of Certain Technologies for Use in Construction Projects during the 11th Five-Year Plan Period\" (No. 659), the following rules were established regarding the service life of construction tower cranes: (1) For the three types of tower cranes listed below, they may continue to be used only after being assessed as qualified by a licensed evaluation agency, provided that their service life has exceeded the specified limit: tower cranes with a capacity of 630 kN.m or less (excluding 630 kN.m), whose manufacturing date is more than 10 years old (excluding 10 years) ； Tower cranes with a torque range of 630–1250 kN·m (excluding 1250 kN·m) and an age of over 15 years (excluding 15 years) ； Tower cranes with a torque of over 1250 kN.m and an age of more than 20 years (but not including 20 years) at the time of manufacture. (II) If the service life specified in the tower crane’s operating instructions is shorter than the period specified above, the service life specified in the operating instructions shall apply. (III) Except for the entire machine, the regulations regarding the retirement of the main load-bearing components of tower cranes shall be implemented in accordance with Article 4.7 of the \"Safety Regulations for Tower Cranes\" (GB5144—2006): \"Retirement of Structural Components and Service Life\". The \"Technical Regulations for Safety Assessment of Construction Hoisting Machinery\", implemented on August 1, 2010, establish rules for the safe management of such machinery: Tower cranes with a capacity of 63 tm or less that are over 10 years old, those with a capacity of 63 tm to 125 tm that are over 15 years old, and those with a capacity of over 125 tm that are over 20 years old must undergo assessment by a qualified entity before they can continue to be used or be used at a reduced capacity; if the assessment is unsuccessful, they must be scrapped. Construction elevators of the SC type that are over 8 years old, and those of the SS type that are over 5 years old, must also undergo such assessment before they can continue to be used.