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Mechie
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Join Date: Dec 2008
Posts: 24

Hot Tapping on Vessel

04/20/2009 1:43 PM

Dear Friends,

Is it possible to put nozzle by Hot Tapping on a pressurised Vessel with Hydrocarbon liquid inside?
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RVZ717
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#1

Re: Hot Tapping on Vessel

04/20/2009 6:37 PM

Pressure? Temperature?

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XMech
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#2
In reply to #1

Re: Hot Tapping on Vessel

04/21/2009 12:05 AM

Yes, more info should be provided, but I will give a tentative yes.

With the following stipulations:

  • the condition of the vessel in the vicinity of the hot-tap is well known
  • a professional, experienced company performs the work with STRICT safety procedures.
  • the mechanical design of the nozzle has be done (reinforcement calcs, welding procedure, MAWP, etc..)
  • any applicable NDT is performed.
  • the work is per your jurisdictional requirements for repairs/alterations (API 510, National Board, .....) and your regulatory inspector agrees.

If you are looking for guidance, please refer to API 2201:

http://www.techstreet.com/cgi-bin/detail?product_id=1094645

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Anonymous Poster
#4
In reply to #2

Re: Hot Tapping on Vessel

04/21/2009 5:26 AM

Just a thought - remember to open the valve before drilling. The sight of a hot tap machine stuck to the outside of a pressure vessel for a year or two is extremely embarrasing.
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Abdel Halim Galala
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#3

Re: Hot Tapping on Vessel

04/21/2009 2:29 AM

Yes, it is a practical to install a nozzle into a pressurized vessel by hottaping, but there must be a study to take into consideration all circumstances conditions such as : is the nozzle located at vapor portion or liquid portion? is it mandatory for creating such flowrate inside the vessel or not? ... etc.

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Anonymous Poster
#5

Re: Hot Tapping on Vessel

04/21/2009 7:50 AM

See www.teamindustrialservices.com
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Mechie
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Posts: 24
#6

Re: Hot Tapping on Vessel

04/22/2009 12:14 PM

Vessel material - SA 516 Gr. 70

Vessel operating pressure 5.5 bar

Vessel Operating Temp. 60 deg.C

Vessel dia. 2m

nozzle dia. 150NB

Please advise
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RVZ717
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#7

Re: Hot Tapping on Vessel

04/22/2009 12:21 PM

Q- "Is it possible to put nozzle by Hot Tapping on a pressurised Vessel with Hydrocarbon liquid inside?"

A- Yes it is possible.

Is there something more to your inquiry, or does this sum it up?

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Users who posted comments:

Abdel Halim Galala (1); Anonymous Poster (2); Mechie (1); RVZ717 (2); XMech (1)

Previous in Forum: DSS Weld Overlay - Problems With PWHT   Next in Forum: Exhuast fan and ducting sizing

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