Low point drains by hot tapping. 2

[ligin18]

Dear All
For project requirement 2" drain point to be provided by hot tapping. Can it possible to provide a 2" drain point by hot tapping. Please provide the details. Thanks in advance.

 

[0707]

The question is too vague to give you details, but in principle the answer is yes if the pipe or the vessel material doesn´t require PWHT. You also have to consider the space for the hot tap machine.

luis

 

[LittleInch]

"Please provide the details" - Errr that's what YOU need to do before anyone can answer this question.

Hot tap machines are often quite long - with the valve and fitting this could easily be 1.5 to 2m long.

Do you have room under your pipe for the machine?

You need to contact a suitably experienced hot tap company to get your information for your particular requirement.

When you are cutting the hole all the hard metal bits will fall down into the valve and mechanism. This is not a good idea and could block the drill or damage the valve.

It sounds like a very bad idea to me.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[Dhurjati Sen]

Consult API RP 2201

DHURJATI SEN
Kolkata, India

 

[MJCronin]

Is this a high-temperature steam system ???....

Under which codes and standards is this work being done ?

What is the MAXIMUM SAFE TEMPERATURE that your hot tapping equipment is qualified to ?.... Has a RP 2201 calculation been done ?

Has this particular equipment been used on [i]STEAM SYSTEMS[/i] before ?

https://www.eng-tips.com/viewthread.cfm?qid=222979

______________________________________________________________________________________________________
Some Applicable Codes and Standards

EEMUA Publication 185 - Guide for Hot Tapping on Piping and other Equipment.

API RP 2201 - Procedure for Welding or Hot Tapping on Equipment in Service.

ASME PCC-2 - Article 216 Welded Hot Taps in Pressure Equipment or Pipelines.

API STD 1104 - Welding of Pipelines and Related Facilities

API RP 2200 - Repairing Hazardous Liquid Pipelin

MJCronin
Sr. Process Engineer