If you require our assets to be moved in order to carry out your project,
0800 074 5788
Here are the steps that we will take you through during the diversions process. Don't worry, we’ll stay in touch along the way to make sure it's going smoothly and you’re happy with everything
We’ll meet you on-site as soon as possible to discuss your plans and requirements
If you requested a C3 estimate, you will need to let us know if you wish to progress to a C4
On average it takes about 16 weeks from payment to start the works agreed
Once we’re finished, we’ll re-turf, re-seed any grassed areas and replant any flower beds if we’ve disturbed them
C2 (preliminary enquiries): The utility companies are required to supply information regarding the general position and nature of apparatus from their records and draw attention to any limitations in the quality of this information. If you have a query about the location of our assets please email our plant protection team plantprotection@cadentgas.com
C3 (initial design and budget estimates): requests for initial budget cost estimation are submitted to the utility companies along with preliminary project designs. this includes the extent of the proposed works with potential diversion routes indicated for existing apparatus (ie, mitigation measures) and budget estimates of the measures (as assessed at preliminary design stage).
C4 (detailed design and estimates): requests for detailed estimates are submitted to utility companies along with final design details of the proposed project, working drawings and an outline programme. Stage C4 is a very important stage as it establishes in detail what the necessary utility mitigation measures are, who they are to be undertaken by and form the basis of the Official Works Order.As of April 1st 2021 C4 requests are now covered by our Guaranteed Standards of Performance. For more information please visit https://www.ofgem.gov.uk
A gas diversion is carried out to do exactly what you'd expect: diverting part of the gas pipeline away from its current route in order to facilitate safe working. Any gas pipe that is tampered with represents a hazard as it can easily ignite and cause an explosion.
The route of underground gas pipes can be unclear, especially as pipes don’t always travel in a straight line and can change direction.
Before carrying out any work whatsoever, it’s important that you contact us to let us know about your planned works and find out whether a gas diversion needs to be put in place. Before contacting our diversions team, you’ll need to know:
Once our team have assessed your plans, someone will be in touch to discuss in further detail. If we do decide that a gas pipe diversion is necessary, this may also involve a site visit to ascertain in further detail what work needs to be carried out.
There’s no definitive way to say how long a gas diversion will take due to the complex nature of a diversions project and the fact that some require much more time than others. The amount of time we’ll need to assess, plan and carry out any necessary work depends on the scale of the development and amount of pipework that needs to be moved.
It’s vital that the plans you submit from the start are as accurate as possible so there are no unforeseen delays to the diversions process.
Customer Enquiries
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A diversion is where a customer would like either a gas pipe moving/lowering, usually due to building or civil engineering works that are effecting the current position of the gas main. Mains abandonment works also come under the diversions banner where a gas main that feeds more than 2 meters is no longer required.
For any changes required before a estimate is accepted, please contact the assigned design officer. Once a scheme has been accepted, please discuss any changes with our Construction Management Organisation, CMO.
If a site visit is required then you will be contacted by the relevant part depending at what stage you are at on within the Diversion process.
A C3 is a budget estimate and a C4 is a more detailed estimate. You can’t pay against a C3, if you wish to proceed with a project a C4 is required and payment required up front. The C4 is still an estimate and final costs are used to either refund or invoice any difference from the C4.
A service is a gas pipe that feeds no more than 2 meters.
A main is a gas pipe that feeds more than 2 meters or a gas pipe that transports gas around the local area/country.
A riser is a gas pipe that runs up the outside or inside of a building, typically on flats or similar buildings.
Factors that determine cost and duration are: length of diversion, pipe size to be laid/connected to/abandoned, surface to be excavated, depth of existing mains, traffic management requirements, specialist quotes, team size required and geographical location.
