Hi. I've seen a hole in a saddle t
Hi. I've seen a hole in a saddle t
(OP)
Hi.
I've seen a hole in a saddle typs around pipes, what is this? Is there any reasonable explanation?
I've seen a hole in a saddle typs around pipes, what is this? Is there any reasonable explanation?





RE: Hi. I've seen a hole in a saddle t
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Hi. I've seen a hole in a saddle t
RE: Hi. I've seen a hole in a saddle t
RE: Hi. I've seen a hole in a saddle t
I could be wrong as I don't know size and rating of the flanges, but doesn't look right to me.
Also is it missing 50% of the bolts??
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Hi. I've seen a hole in a saddle t
I agree with LittleInch on the purpose of the hole.
However I think there is another answer for the Flange and Bolts.
The Flange (re: thickness) and the bolts (re: number, length and quality) are only for shipping. The Yellow color paint on the cover flange is to indicate removal before installation.
-
Possible?
Sometimes its possible to do all the right things and still get bad results
RE: Hi. I've seen a hole in a saddle t
Have a closer look at the photo. The vessel is sat on its supports - the vessel has "runs" on it which indicates it has been there for a while - in the background you can see the rest of the plant.
europipe,
Do you mean different lengths?? They look to be all the same length to me just some are protruding through a little bit more on the bottom nuts.
RE: Hi. I've seen a hole in a saddle t
Good luck,
Latexman
To a ChE, the glass is always full - 1/2 air and 1/2 water.
RE: Hi. I've seen a hole in a saddle t
Could you give us more pictures of this Vessel, say from a little farther back where the whole vessel shows along with the Saddles and Structural Supports?
Sometimes its possible to do all the right things and still get bad results
RE: Hi. I've seen a hole in a saddle t
RE: Hi. I've seen a hole in a saddle t
RE: Hi. I've seen a hole in a saddle t
http://www.eng-tips.com/viewthread.cfm?qid=25516
(Also, threading the hole allows a MNPT nipple to be screwed into the repad to extend beyond any insulation thickness)
RE: Hi. I've seen a hole in a saddle t
RE: Hi. I've seen a hole in a saddle t
Reinforcing plates and saddles of nozzles attached
to the outside of a vessel shall be provided with at
least one telltale hole (maximum size NPS 1⁄4 tap) that
may be tapped for a preliminary compressed air and
soapsuds test for tightness of welds that seal off the
inside of the vessel. These telltale holes may be left
open or may be plugged when the vessel is in service.
If the holes are plugged, the plugging material used
shall not be capable of sustaining pressure between the
reinforcing plate and the vessel wall.
Just don't agree with the various comments about entrapment of gas whilst welding.
How many millions of reinforcing pads are fully welded onto pipe for supports around the world without a "weep hole or Telltale hole" ?
Just think about it - when you weld around the circumference of a pad there is always somewhere for the air to escape so it will never get heated or pressurised until the very last 2-3 seconds when the start and the finish of the welds are joined and even then it is minimal.
Can't think of why you would need a hole to release any "pressurised gas" ?
Regards,
Shane
RE: Hi. I've seen a hole in a saddle t
"Just don't agree with the various comments about entrapment of gas whilst welding". You are wrong here and ask any welder.The fact that there are loads of repads on pipework nozzles around the world without weep holes is not a valid argument. The larger the Re-pad the more important to remove the welding gases.
RE: Hi. I've seen a hole in a saddle t
I was an ASME qualified pipewelder for 15 years and have been a CWI now for 20 years.
I think I know what I am talking about.
IMHO - and I stress it is my opinion - pressurisation of welding gases is an "old wives tale" and if you can provide evidence of that being the reason for weep holes / tell tale holes I will humbly apologise,
Regards,
Shane
RE: Hi. I've seen a hole in a saddle t
RE: Hi. I've seen a hole in a saddle t
RE: Hi. I've seen a hole in a saddle t
RE: Hi. I've seen a hole in a saddle t
RE: Hi. I've seen a hole in a saddle t
RE: Hi. I've seen a hole in a saddle t
RE: Hi. I've seen a hole in a saddle t
RE: Hi. I've seen a hole in a saddle t
Keith Cress
kcress - http://www.flaminsystems.com