Pump Monorail/Hoist Rigging - Headroom over pumps 1

[hondashadow1100vt]

I am looking for geometric vertical headroom clearance rules of thumb for rigging pumps into/out of a space via a monorail equipped with an electric hoist and trolley.

More specifically, how much room is necessary between the top of the equipment to be rigged over and the bottom of the hook at it’s highest point? In addition, how much extra room is typically included as a safety factor.

Also interested in learning of any pitfalls that may be encountered/avoided.

Thank you in advance for your input/feedback!

 

[MJCronin]

Depends on your rigging scheme !!

Are you using a lifting beam ? One or two slings ???

I would assume a minimum distance of 4 to 5 feet would be about right

MJCronin
Sr. Process Engineer

 

[pennpiper]

hondashadow1100vt,
(1) I strongly suggest you start with a simple sketch of what you think you will have and need.
(2) Next I suggest you go out to the site/building and Identify all the fixed objects (under the crane rail)
(3) Next identify the dimensions of the Pump (and other objects) you will need to remove
(4) Next get the dimensions of the the objects you will need to lift and travel over
(5) After you have all the data, then update your sketch.
(6) Finally, get a very smart co-worker to check you plan.



Sometimes its possible to do all the right things and still get bad results

 

[Artisi]

pennpiper: will need to be a LOT smarter than the OP.

It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)

 

[shashankTurbomachine]

monorail Hoist for these pumps are at height much above these pump usually that height can vary from 10m to 20m.

it depends upon the height of the pump flange you need to lift up.
Suppose the height is 10m , so actual height can be 10m - heigght of flange(say, 2.5m) = 7.5m effective height.


A well phrased question has answers in itself!!!

 

[hondashadow1100vt]

MJ Cronin:
- I had not planned on using a lifting beam but I am open minded to considering it.
- I had figured on using a couple of slings but open minded to alternative arrangements.
- The pumps are 200-HP horizontal split case types. The pump itself is about 4'-0" +/- in height when assembled (seems like I'd need more than just 5'-0" feet for a 4'-0" tall pump. I am just not sure how much additional height to add).

Thanks for the input/feedback. Much appreciated.

 

[hondashadow1100vt]

pennpiper:

Thanks for the good practical advice. I'll plan to do just that. (BTW: It is greenfield construction as opposed to an existing facility so it should cut down on the steps just a little).

Thank you for the suggestions.

 

[hondashadow1100vt]

Artisi:
Does "OP" mean other people? Not sure I follow how to interpret the comment (or maybe I am not supposed to follow since the comment isn't really directed at me). If so, I'll just keep my nose out of it unless you let me know otherwise. Thanks for the reply. I do appreciate it.

 

[hondashadow1100vt]

shashankTurbomachine:

I have about 6.5-FT (~2 m) from the top of an installed pump casing to the bottom of the hook. The pump casing (top to base plate) appears to be about 4-FT (1.2 m).
(Note: Hook to floor elevation is about 14-FT as the pumps are up on pedestals although this seems immaterial at the moment).

Thank you for the feedback.

 

[EdStainless]

For larger loads that I wouldn't lift with a single sling I like a spreader beam.
You can position the hooks so that the load is well balanced.

We always liked at least 2' clear.
Your situation sounds a little tight to me.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube

 

[shashankTurbomachine]

effectively you have only 0.8 m from the base of the hook. but you can't even hang the casing to its double height with that headroom. Please increase the bottom of the hook from casing length to 4m from 2m. so that you can easily lift the 1.2m casing atleast 2 times (4-1.2=2.8) leaving extra space for working

A well phrased question has answers in itself!!!

 

[hondashadow1100vt]

Thanks all!