Low Temperature Cranes

[mechmike]

I'm working on the design of an offshore platform in a cold environment -45C design and -35C is a realistic ambient temperature. I have a 5 tonne jib crane with a electric monorail, the jib is also electric with 270 Degrees of rotation. The crane is in a Zone 1 area and I need IEC Eexd electrics. (I need the cranes to assist in load/unloading pigs in an unencloused pigging area, the intellegent pigs can be up around the 4 tonne mark)I cannot seem to find a crane that can operate below -20C, I'm told the Eexd motors for crane and the Eexd rated cables will not fuction below -20C, I have also been told that the slewing ring and other structural components will not take "load" under -20C. Does anyone know of any other options available for cranes that may function at these temperatures? I'm thinking about a API 2C Type A crane with a heated encclosure over the slewing ring/controls?

 

[Hippo41]

I have supplied a number of slewing rings for use offshore, and even on the Antarctic supply vessels. Slewing rings CAN be made to operate under those conditions.

I would sugets you contact someone like BRB Technologies of France, Rollix Defontaine or Rothe Erde who will be able to assist you with the slewing ring at least.

If you are UK based I can post the contact details for these companies if you like.

Hope this helps.

Lester Milton
Telford, Shropshire, UK