unvented discharge

[Alanc]

What would you guys do for a d2 discharge under floor (visible in copper) that was in 28mm hep with pushfit bends fitted, then externally in 28mm coppper.

would it be NCS AR ID ?

regards
Al

 

[PlumbBobBob]

should be in copper all the way.

 

[AWheating]

it does not have any of them ratings really as its not a gas related issue.

All you can do its put it in writing to your customer and or tennant as a potential dangerous situation and advise its repiped correctly. This then passes the responsibility onto them. Dont forget to include your quote for the work with the letter

 

[Pipes Plumbing]

^^^This is about all you can do... Reference the building regulations and make sure to state why it should be repiped (for safety and the protection of property and persons).

Apart raising it with building control to try and track down the installer that should have registered it (the 2% chance that it's been notified!) there isn't a vast amaount of enforcement action available. If it's a shocker you could RIDDOR it as a dangerous installation to HSE... Not sure if it would get anywhere though, as it's highly unlikely that the installers details are there!

 

[Deleted member 25704]

I made the mistake about ten years ago of condemning an installation that had a plastic discharge and termination into a soil stack. To my embarressment the customer pitched up the with print out from building regs to explain the changes - I didn't know.

The discharge does not have to be metal, just 'preferrably metal'. However ABS plastic is specified I think (from memory), which is different to polybutylene in Hep2O, so your concern is justified. In addition I think the 'meltdown' of Hep20 is lower than 136 degrees centigrade, which is the boiling point of water at 3 bar. Hence, Hep not suitable.

With regard to the termination - provided one end of the discharge is visible e.g. tundish, then it can be terminated into a stack.

Be careful about the unvented situation and its gas relation - if it is notified through Corgi or Gas Safe, then customer thinks its a gas related issue. Just had a letter from a solicitor wanting a 'corgi' notification cert for an unvented installation I did a five years ago - customer is moving house.

However, in your instance, just record it as a non-gas related issue, that does not comply with building regs section G3.

 

[Alanc]

many thanks for the great advice guys, have a nice evening.