hi guys,

i have a question about spring hangers too. currently i'm diong stress analysis for a offshore platform. the whole mudule is fabricated at yard and once finish it will be towed to the platform.

I was read once that all spring hangers have a locking pin. The purpose of this pin is to lock the spring hangers from operate since spring hangers are designed for operating case only. Therefore I like to know during towing condition, the locking pin is still attached to the spring hangers or already removed.

Some people said that the locking pin will be removed after hydrotest. If they don’t remove the pin before the module is towed, they might have a difficulty to remove the pin once the module arrives at the platform.

this information is very important for me to set the spring hangers as rigid or as design in my analysis. looking for your opinion.

thanks in advance.