Gas pipe sleeving, both sided internal

[sdsparks]

Afternoon all

Running a gas pipe through an internal wall, both sides are internal, usually you would seal the internal side so in the event of a leak it vents externally but in this case both sides are internal, opinions please?

Thanks

Sam

 

[mickie]

dont seal it

 

[AWheating]

if you chose to seal one side then leave the side open thats to the most used room. This will mean you will have a better chance of smelling the leak without it having a chance to build up i guess.

 

[sdsparks]

Great suggestion, although on this occasion it's an open plan room, the pipes are going through a small section of wall

Thanks

Sam

 

[AlexGas]

From BS 6891 (Installation of low pressure gas pipework of up to 35 mm in domestic premises (2nd family gas) - Specification):

8.10.2
Sleeves shall pass through the full width of the wall or the full thickness of the floor. Sleeves shall not impair the fire resistance of a building.
The annular space between the pipe and the sleeve shall be sealed at one end to the pipe with flexible fire resistant compound. Where a sleeve passes through an exterior wall, the seal shall be on the inside of the wall.

Looks like you need to seal one end. Have to choose one.

Hope it helps.

 

[stevetheplumber]

if its only going through a pier in the same space it doesnt need sealing

 

[EPH]

It really doesn't make that much difference if it's open planned?
Main reason for sealing it is so you can smell the gas in the most used area if there's a leak.
Unless you get an extremely picky inspection I would suggest it makes no odds?

 

[AWheating]

i wonder what percentage of sleaves actually get sealed correctly? and of thoses how many get sealed with a fire rated material? many companies to save money try to get you to sleave with plastic pipes to save on copper, a lenght of 35mm coppers is very expensive when the profit margin is 1% of the job.

 

[REDSAW]

you seal the 22mm to the wall at both sides then run 15mm through with no seal.
in the regs there are 2 explanations and the interpretation is the key.

 

[Heatshield]

i wonder what percentage of sleaves actually get sealed correctly? and of thoses how many get sealed with a fire rated material? many companies to save money try to get you to sleave with plastic pipes to save on copper, a lenght of 35mm coppers is very expensive when the profit margin is 1% of the job.

You cannot plastic pipe to sleeve gas pipe. Also, you would only use 28mm sleeve 22mm supply.

 

[newcastle phill]

the regs just say the sleeve must be capable of containing gas in the event of a leak.
That means a sleeve could be copper or pvc or other suitable material.

 

[Heatshield]

Pvc pipe cannot be used for the carriage of gas inside the property. Pvc pipe can only be used to provide an external supply to a property.

 

[AlexGas]

You cannot plastic pipe to sleeve gas pipe.

Depends!

 

[newcastle phill]

Pvc pipe cannot be used for the carriage of gas inside the property. Pvc pipe can only be used to provide an external supply to a property.

Thats not the point in question. It is pertaining to sleeving through walls,

 

[newcastle phill]