spillage test

[bob the plumber]

can someone just confirm to me on this.

when conducting one using a smoke bomb it must be to the correct BS standard and be a 30 sec burn with a smoke output of 5m3?

 

[bob the plumber]

thanks

 

[Barry98]

welcome ?

 

[Davinder]

can someone just confirm to me on this.

when conducting one using a smoke bomb it must be to the correct BS standard and be a 30 sec burn with a smoke output of 5m3?

Yes, BS 5440 part 1.

I thought that you used the smoke pellet for a flue flow test though, and a smoke match for the spillage test

.[/QUOTE]

 

[SimonJohns]

Yes, BS 5440 part 1.

I thought that you used the smoke pellet for a flue flow test though, and a smoke match for the spillage test



Eh....OK, I don't know what to say to that.

Does anyone else agree that a flue flow test should be done from below the heat exchanger to prove the flow through and not just from the draught diverter?


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[GrahamM]

can someone just confirm to me on this.

when conducting one using a smoke bomb it must be to the correct BS standard and be a 30 sec burn with a smoke output of 5m3?

For a flue flow test: The minimum to comply with regs is 5m³ smoke in 30s. I use the bigger pellets for unlined chimneys or flats.

 

[GrahamM]

Does anyone else agree that a flue flow test should be done from below the heat exchanger to prove the flow through and not just from the draught diverter?


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Unless the MI's state differently I usually sit on top of H/E for an open flue boiler. The flue flow test is to confirm integrity of flue & termination.

 

[CES]

Does anyone else agree that a flue flow test should be done from below the heat exchanger to prove the flow through and not just from the draught diverter?


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Thats where I usually do them. Normally after removing the burner for cleaning.

 

[CES]

I guess we all have our different quirks. End result is the same though.

 

[SimonJohns]

I guess we all have our different quirks. End result is the same though.

How can you prove that the POC's on an openflue boiler are being evacuated correctly if the flow test is done in the DD?


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[Billy Bob Bob]

How can you prove that the POC's on an openflue boiler are being evacuated correctly if the flow test is done in the DD?


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with a spillage test,smoke will not always go trough a heat exchanger it depends on the design,smoke bombs can and do go trough a nest spillage testing is the ultimate test with the appliance running of course

 

[mikegas]

I was taught to do it at the burner for flue flow an DD for spillage

 

[CES]

How can you prove that the POC's on an openflue boiler are being evacuated correctly if the flow test is done in the DD?


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Erm, maybe you should have read my post previous to that one??? The one where I said I usually carry out a flue flow test from within the combustion chamber after i remove the burner?

 

[CES]

In any case, as already said, flue flow tests the integrity of the flue. Testing that the poc's are being pulled properly is the spillage test.

 

[leelister6]

I thought spillage was done with a smoke match? Flue flow is a smoke bomb and check the loft space etc. Am I reading this wrong?

 

[CES]

No you're right. F/F with a pellet, Spillage with a smoke match.

 

[GrahamM]

I thought spillage was done with a smoke match? Flue flow is a smoke bomb and check the loft space etc. Am I reading this wrong?

Bob is obviously a bit off with his terminology, but I believe he is not advocating carrying out a Spillage with a smoke pellet. Most people have commented with regards to carrying out a Flue Flow test.

 

[Ryster]

Just to throw a spanner in the works, what if out of curiosity you did a Spillage with a match first and got nothing and then did one with a pellet and small amounts of smoke were coming from the sides of the top of the heat exchanger?

 

[Kev the gas]

Then the heat exchanger/ combustion chamber is leaking and if possible sealed or the appliance ID.

 

[Ryster]

Good job I turned the thing off then!Wasn't 100% sure that it WAS safe with a match so used a pellet and it came out the top of the sides on an old Mexico I think it was!?Are there any sealents I can get in which I could use to re-seal the top of the chamber or is it beyond help?

 

[Billy Bob Bob]

Good job I turned the thing off then!Wasn't 100% sure that it WAS safe with a match so used a pellet and it came out the top of the sides on an old Mexico I think it was!?Are there any sealents I can get in which I could use to re-seal the top of the chamber or is it beyond help?

top off the sides?? what sides of the draft hood?

 

[Ryster]

It's coming out of a front plate just below the heat exchanger cover on the top and also where the heat exchanger meets this cover, around 2/3rds up at the sides.If I was at home I would do a quick diagram, sick of these old boilers!

 

[Kev the gas]

Fire Cement its great, prob will seal for about 6 months !

That is where the problem lies, if you seal a joint that wasnt sealed with a sealant when it left the factory then you have changed/altered the appliance.

"IF THE SEAL FAILS" then you could be liable!

If a flue joint ie Nurastone flue joint fails that could be accepted as fair wear and tear.

Can of worms m8.

Cover your ar.e at all times.

Kev.

 

[leelister6]

Try gun gum. Use it for exhaust pipes. Not sure if it'd be legal though! (As above)

 

[Billy Bob Bob]

i think your better off talking to the manufactures,obviously a photo would be better,but there are manufacturing tolerances regarding combustion cases and this is a o/f boiler so maybe exceptable,i dont know hard to say with out seeing it myself problem may not be a issue when the appliance is hot and case expanded

 

[GrahamM]

Just to throw a spanner in the works, what if out of curiosity you did a Spillage with a match first and got nothing and then did one with a pellet and small amounts of smoke were coming from the sides of the top of the heat exchanger?

Did you do a flue flow with a smoke pellet first & where did you take it from exactly?

 

[mfgs]

I dont know why you would spillage test with a smoke pellet. If it didnt leak on the flue flow test, hopefully you did it as low as possible i.e by the burners, and it was fine with a smoke match on the spillage test then there isnt an issue.