Water Tank buckling inwards

[plumbinguser]

Hi

I have a large hot water tank (cistern?) that is heated by boiler and water solar.

There was a large noise and looking at the tank it is no longer circular but buckled in a bit in a few places. I cannot understand this as it would indicate more pressure externally than internally which is full of water.

Any ideas on what can cause this and what I need to get it sorted?

Regards
Colin

 

[lame plumber]

turn off the boiler now, pop upto the attic, turn off the cold supply going into the bigger of the 2 water storage cisterns, if you can see a tap, tie up the ball valve so it cant refill, this is assuming you have an open vented system. if the cylinder thats buckled has no tanks in the roof, as it is an unvented cyl, turn off the cold supply to the cylinder next to it.

Call a plumber forthwith to attend first thing......... your cylender has got a vacuum in it somehow, and needs changing before it splits.

photos would help!!

 

[plumbinguser]

Hi

It had a small buckle in the past and the plumber I called in did not know what caused it. It is an unvented system.

The pictures are attached

Regards
Colin

 

[ShaunCorbs]

as above and time for a new tank and get a g3 plumber to supply and install it dont call the orgin guy back

post in here MUST BE G3 REG

[DLMURL="http://www.ukplumbersforums.co.uk/im-looking-plumber-gas-engineer/"]I'm looking for a Plumber or Gas Engineer[/DLMURL]

 

[plumbinguser]

The original system was installed 7 years ago and since then the company has gone bust.

How do I know if the plumber is G3 registered?

 

[Best]

As said, - Get the heat and water supply turned off that unit!
Was somebody working on your plumbing recently and turned the water off the unit?

 

[Ch4 plumbing]

The original system was installed 7 years ago and since then the company has gone bust.

How do I know if the plumber is G3 registered?

Ask for proof of G3 accreditation, should be proved with a plastic credit sized card with a photo of the installer on.

 

[Best]

The original system was installed 7 years ago and since then the company has gone bust.

How do I know if the plumber is G3 registered?

You insist they are G3 registered (qualified to work on unvented).
Looks like some G3 person will have to replace that unit and make pipework etc all correct. They will have to fill in paperwork for building authority and manufacturers warranty (usually 25 year) so need to be G3

 

[plumbinguser]

Nobody has been near it for several years so just started along with the cold weather. Will get someone to take a look tomorrow.

Thanks for all the replies

 

[stevetheplumber]

ive seen a few like this usually on 3 or more storey places my caravan water sytem is basicaly a miniture unvented system and has an air admitance vave to allow it to drain down

 

[Billy Bob Bob]

Hi

It had a small buckle in the past and the plumber I called in did not know what caused it. It is an unvented system.

The pictures are attached

Regards
Colin

Thats dangerous,get it sorted asap,that cylinders going to blow and when they do its like setting a bomb off,as said make sure the installers G3

 

[townfanjon]

PLEASE look and take advice off post five ..... I will remind you heat OFF, water OFF . NOW !!!

 

[Best]

I am thinking vacumn created when water off, - possibly frozen mains?
Then perhaps the unvented unit is on a higher floor. Tap opened and serious suction

 

[Radioman]

Looking forward to the result. Please post