Catchment spaces volumes?

mutley racers · Mar 6, 2012

When you are checking the catchment space for fires, how do you convert the volume in mm to decimetres? My viper does not seem to mention it. Or if there is 75mm or 250mm from the bottom of the flue spigot, do you still need to work out how many decimtres it is?

Cheers fellers

diamondgas · Mar 6, 2012

1 Decimeter cubed = 1,000,000 mm cubed or 1,000 cm cubed .. 100x100x100.

Regards the distance from the flue spigot .... there is still a minimum void required below the spigot .. 250mm & 0.012m cu, 12 Litres, 12 decimeters minimum or 75mm & 0.002m cu, 2 litres, 2 decimeters minimum 🙂 That's what my book says anyhoo's 🙂

Hardy1 · Mar 6, 2012

^^Diamond gas

quality · Mar 6, 2012

Convert.exe
Try this for all your conversions its a lot easier to understand than all them 0000's lol

kirkgas · Mar 6, 2012

mutley racers said:
When you are checking the catchment space for fires, how do you convert the volume in mm to decimetres? My viper does not seem to mention it. Or if there is 75mm or 250mm from the bottom of the flue spigot, do you still need to work out how many decimtres it is?

Cheers fellers

TBH decimeteres is only ever mentioned in training notes and isnt used anywhere else, when fitting/checking a fire the MI gives minimum dimensions, so far easier to check those than convert

GrahamM · Mar 7, 2012

kirkgas said:
TBH decimeteres is only ever mentioned in training notes and isnt used anywhere else, when fitting/checking a fire the MI gives minimum dimensions, so far easier to check those than convert

I do not recall even decimeters been mentioned during my ACS. Always used the dimensions.

diamondgas · Mar 7, 2012

I had to look in the bpec file from last year to get the info! I just remember a decimetre being a tenth of a meter and did the maths 🙂 I think that one of the best traits to have as a gas engineer is to know where to go if you're not sure and to know your limitations! I have a phone book full of manufacturers tech help lines and a network of colleagues who i can turn to when I'm not sure.

mutley racers · Mar 7, 2012

oh ok guys, so in my assessment when they ask me to check the catchment, as long as its either 75mm masonry with new or previously used for gas appliance and lined or 250mm unlined or with old solid fuel appliance.

Thanks for all the help.

Also, in the practical do they ask you to calculate a purge volume for u16 metre

kirkgas · Mar 7, 2012

mutley racers said:
oh ok guys, so in my assessment when they ask me to check the catchment, as long as its either 75mm masonry with new or previously used for gas appliance and lined or 250mm unlined or with old solid fuel appliance.

Thanks for all the help.

Also, in the practical do they ask you to calculate a purge volume for u16 metre

purge calculations are done in the practical so it depends what the meter is, you deffo do various purge questions but the info is taken from the tables in your notes

mutley racers · Mar 7, 2012

I see. Surely i cant take my notes into the assessment centre with me. Or can i? I can just look in my viper book then i guess?

kirkgas · Mar 7, 2012

mutley racers said:
I see. Surely i cant take my notes into the assessment centre with me. Or can i? I can just look in my viper book then i guess?

hand written notes need to be shown to the assessor first to ensure it is notes and not cheats, some places issue a clean training book for assessment to minimise the risk of cheating, TBH i have never been a lover of that, as the notes themselves are not perfect, and get added to during the training so i ccant see the prob, the issue is when you have 2 guys from the same company doing assessments a couple of days apart, the second one gets some info/help from the first and scibbles it down this isnt a help its a cheat, but not sure how often it would happen anyway