We are transporting vessel which is resting on three supports. Our engineers to access underneath the vessel to secure an insert to a flange. Does anyone know of minimum space requirements for such a task?

I have some documents that I created for maint team a few years ago on ergo but headline is below..if I find more I will post it..

To provide adequate clearance for maintainers and to provide sufficient space to accommodate tools, test equipment, procedures, and other job aids during an in-place repair, a nominal 914 mm maintenance clearance should be provided around all major system components and piping of 610 mm diameter and larger.

Originally Posted by: Bigmac1

I think you need a better explanation and some clarification as to what you are actually asking.

Thanks for getting back to me.

Basically, our engineers need to work underneath a supported vessel in order to bolt on a section to a flange. My question is, how much space as a minimum (if there is such a standard) must they have?

Thanks very much for your help :)

Originally Posted by: stevedm

I would go with the 940mm of clearance....which should give them eniugh roo to stay with maximum reach and effort etc...I think there is an Oil and gas guidance note somewhere I will see if I can look it out for reference...what I am listing here is from various engineering ergonomic studies and part of ergo training for engineers...