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Discuss Gas volume calculation in the Gas Safe Register Forum - Public Forum area at PlumbersForums.net

I-kal

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hey Guys I wonder if someone could help me out.

I wanted to find out if I could work on this domestic installation. It’s a house with 2 boilers 24 kw each so 48 in total, the gas meter is a g10 which I believe can be used as domestic and commercial. The gas pipe is run in majority 28 mm at 12 meters and 2 metres in 22mm. What would be the volume of gas in as I am aware as a domestic engineer I can work on 70kw and less with upto 35mm pipe and a gas volume of 0.035m3 and less. Appreciate the help thanks
 

Riley

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First things first are you gas safe?? I’m assuming yes. Daft as it is because it’s pretty specific but we do not discuss has topics in open forum. Send a copy of the front and back of your card to @Riley @Harvest Fields or @ShaunCorbs and get your posts up to ten or more and we’ll get you access to the gas safe only section.
 
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I-kal

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Hi yes I am, when signing up I had to give my gas safe number but I will send over a pic to the above.
 
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I-kal

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Just sent it over let me know is you have received. Cheers mate.
 
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I-kal

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This is the thing it’s over by quiet a bit so I must be doing soemthing wrong. I have been going over books etc to see if my working are correct so I thought someone on here could guide me.
 

ShaunCorbs

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fill this out

28 mm at 12 meters _________ x 12 =
2 metres in 22mm __________x 2 =

total = ______

+ 10%

total iv _______

g10 meter _____

Ivt _____

its close
 

snowhead

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Are you adding pipework to the system, in which case it may be under to start but over after the addition?
Or just working on the boilers?
 
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I-kal

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No pipework adding just working on boilers and issuing a landlords gas safety
 

ShaunCorbs

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so have i

28 mm at 12 meters 0.00054 x 12 = 0.00648
2 metres in 22mm 0.00032 x 2 = 0.00064

total = 0.00712

+ 10%

total iv 0.007832

g10 meter 0.025

Ivt 0.032832
 
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I-kal

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Judging by that it’s very close, will need to make sure measurements of gas pipework is spot on in this case.
 

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