API 510 Abandoned-in-place definition and interpretation questions 2

[Engineering1012]

Hello all,

In API 510 section 3.1.1. the definition for Abandoned-in-place is as follows:
A pressure vessel meeting all of the following: has been decommissioned with no intention of future use; has been completely de-inventoried/purged of hydrocarbon/chemicals; and is physically disconnected (e.g., air-gapped) from all energy sources and/or other piping/equipment but remains in place.

My question is on the interpretation of "physically disconnected". Are there other examples other than "air-gapped" of physically disconnected? There have been debates about slip blinds being used as a interpretation of physically disconnected (along with other constraints on a vessel to deem it "out-of-service").

Haven't been able to find much on the forums.

Any thoughts would be great!
Thanks

 

[ProSafPlant1]

If that was their intent API would have just said "isolated", not "disconnected....".

 

[RVAmeche]

I think it's pretty clear - it needs to be physically disconnected from all systems. Spectacle blinds and other means are not acceptable since the active systems are still connected (just isolated). To me this would be removing a valve and blinding/plugging the active side and similar approaches.

 

[DVWE]

I agree with the above posts. "Physically Disconnected" does not leave much room, if any, for interpretation.

The devil is in the details; she also wears prada.

 

[Engineering1012]

Are there any other examples of physically disconnected? Why wouldn't they just say "air gap"? (I am playing devils advocate here)

 

[DVWE]

Are there any other examples of physically disconnected? Why wouldn't they just say "air gap"? (I am playing devils advocate here)

Do they not??

In API 510 section 3.1.1. the definition for Abandoned-in-place is as follows:
A pressure vessel meeting all of the following: has been decommissioned with no intention of future use; has been completely de-inventoried/purged of hydrocarbon/chemicals; and is physically disconnected (e.g., air-gapped) from all energy sources and/or other piping/equipment but remains in place.

The devil is in the details; she also wears prada.

 

[Engineering1012]

They give an example as "air gapped". I am asking if there are any other examples to air-gapping that would deem the vessel "physically disconnected"?

 

[RVAmeche]

I think this is a rare instance of it being pretty self explanatory, as the previous posts have said.

Is someone's pushing back on some other definition/view of "physically disconnected"?

 

[Engineering1012]

Yes just trying to clarify if there are any other examples, because they provide an example as air gapping. Sanity check.