22mm gas feed necessary?

[Dan Robinson]

To clarify, if the minimum operating pressure at the meter is measured at 15 mbar

WP at the appliance of less that about 15 mbar

Although you are talking at crossed purposes as usual.

 

[Bunnyman]

What an idiot bernard is ffs, thats not what tony said, u either don't understand gas or ur as dangerous as he is!

 

[bernardgreen]

like a teacher used to say , must try harder and you need to google harder

I will pass that on to the person looking into the energy supply infra structure for the proposed new settlement.

 

[bernardgreen]

u either don't understand gas or ur as dangerous as he is!

Out of curiosity what is your opinion / advice in the situation where the gas consumption at a housing estate was found to be peaking at more than twice the predicted amount. Prediction based on the developer's documention in the planning application.

How far can the pressure at the meters drop before appliances become dangerous and at what point of reduced pressure would the gas transporter be required to take the emergency action of shutting off gas to the area. Bearing in mind that restoration of the supply is extremely expensive in labour costs due to the need for a technician to visit every house that has a gas supply to check for ( among other things ) pilot lights without flame protection that will issue gas until relit.

 

[Dan Robinson]

Ooh busy body Bernie are you sure BS6400 is the document to rely on?

 

[bernardgreen]

I don't think anyone is relying on BS6400, but it was mentioned in connection with possible low pressure incidents in the gas supply network. It is also referered to by Worcester Bosch in their Technical Documnet TECHNICAL BULLETIN TB 0040 a (2010/09) which is in the public domain ( via Google of course )



==========================================
Bernard, we've asked you privately to not to try to go into gas matters you obviously aren't aware of.
You aren't going to get "gas training" here.

Now we're doing it in public.
Mod
==========================================

 

[rules&rulers]

If you think

If you think that it is a different figure then why don't you be helpful and quote what you think it is?

Nothing to do with "if you think"

There is a statutory pressure that the transporter has to supply,if the statutory pressure is not achievable then that part of the network will be closed down.

Tony,your an experienced gas operative. An ex manufactures agent so you have been involved with gas appliance design so this statutory pressure should be well known to you.

Have you been on the dog&bone to national grid for a few days? asking them about pressures ?

 

[Dan Robinson]

Technical Documnet TECHNICAL BULLETIN TB 0040 a (2010/09) which is in the public domain ( via Google of course )

And therein lies the problem

 

[rules&rulers]

And therein lies the problem

Some people believe their search results are actually correct.

Gas operatives will either have printed reference material at hand or access to up to date reference material and not use search engines to churn out something that sounds nearly correct.

 

[Dan Robinson]

One thing is certain, nothing Bernard will Google will give him authority to discuss supply side operating pressures. Those documents are bloody expensive.

 

[ianmcd]

used to love a cessation when I was younger , super bucks to be made, there is a new word for you and agile to google Bernie

 

[bernardgreen]

cessation

Even before the internet I knew that to say" there is a cessation" was the official way to say "the gas has been cut off"

 

[Madrab]

Annnnd ...... The OP's last comment was 3 pages ago, gotta love this forum

 

[Dan Robinson]

Bernard also forgot to mention that this is only permitted for 5% of the time .

Came to light while researching the infra-structure needed to be put in place to enable a new settlement of between 2500 and 4500 houses to be built.

Can you imagine.....

 

[bernardgreen]

Bernard also forgot to mention that this is only permitted for 5% of the time

So what happens when the low pressure condition lasts for longer than 5% of the time ?

And what is the time base for the 5% ? Five percent of 100 years is 5 years. So if the time base is set as 100 years then low pressure can exist for 5 years before any remedial activity has to happen. A more realistic time base would be 1 month but even that would still "permit" 33 hours of low pressure.