The ZANDZ.com Technical Center has received a question regarding the lightning protection of the tower crane. How is it made and what regulatory documents can you rely upon? Let's consider the main aspects related to the arrangement of the crane protection.
The crane tower is fully made of metal. According to SO 153-34.21.122-2003, item 3.2.1.2, item 3.2.2.5 the crane does not need the lightning protection system and can itself be a natural interception rod. The crane operator sits in the metal cabin that serves as a shield from external effects of the lightning strike. In order to protect the operator from voltage exposure, the seat is made of a dielectric material. Moreover, a dielectric mat or coating is also placed onto the floor
The tower crane should be grounded in at least two points. This is usually implemented via rails whereon it is installed. The resistance of the grounding arrangement should not exceed 4 Ohm (EIC, item 1.7.101).
Do you need to calculate lightning protection and grounding for a tower crane? Please contact the ZANDZ Technical Center!
Related Articles:
_thumb.webp)
