"},{"ID":293352,"user_firstname":"Tom","user_lastname":"DeWitte","nickname":"Tom","user_nicename":"tdewitte","display_name":"Tom DeWitte","user_email":"tdewitte@esri.com","user_url":"","user_registered":"2021-11-19 14:00:09","user_description":"Tom is the technical lead supporting the natural gas, district heating, and district cooling industries at Esri. Mr DeWitte joined Esri in 1998. He earned his BS in aerospace engineering from Iowa State University.","user_avatar":"
"},{"ID":7521,"user_firstname":"Remi","user_lastname":"Myers","nickname":"Remi Myers","user_nicename":"rmyersesri88","display_name":"Remi Myers","user_email":"RMyers@esri.com","user_url":"","user_registered":"2018-03-21 18:21:22","user_description":"Remi is the Product Manager for the ArcGIS Utility Network and spends his free time exploring the US Southwest desert and California beaches.","user_avatar":"
"}],"short_description":"This article will show you how you can use Esri's Gas and Pipeline Utility Network Foundation solution to create and manage subnetworks.","flexible_content":[{"acf_fc_layout":"content","content":"Today\u2019s natural gas pipe networks are an engineering marvel. In North America, this interconnected network consists of nearly 3 million miles of gathering, transmission, storage, and distribution subsystems. Another marvel of this pipe network is that it uses only pressure to push the natural gas molecules through this vast network. Understanding of pressure and how it is used to move these natural gas molecules is the secret sauce for understanding the engineering of gas pipe networks. One of the most exciting and powerful features that the utility network provides to gas and pipeline customers is its ability to understand pressure. This understanding allows the ArcGIS Utility Network to digitally represent this engineered pipe network and its hierarchical subnetwork of system, pressure, and isolation zones.<\/p>\n
Because the tools and processes used to manage this GIS information are new, we have put together a series of blog posts to introduce you to the language and tools used by the ArcGIS Utility Network to create, manage, and perform quality assurance on the correctness of your gas and pipeline systems. These articles are written using the data model and configuration provided by Esri\u2019s Gas and Pipeline Referencing Utility Network Foundation<\/a> solution. If you’re interested in more content like this, I recommend you check out the ArcGIS Utility Network for Gas and Pipeline reading list<\/a> as well as these hands-on tutorials related to this article:<\/p>\n Before we go too much further, we need to discuss the concept of a subnetwork in the utility network. Most networks can be broken down into different areas based on the equipment that is supplying or regulating service. Each of these areas is referred to as a subnetwork, and every feature that is responsible for managing a subnetwork is called a subnetwork controller. We use these general terms because the utility network is used to model many types of networks and each network has its definitions for the different types of subnetworks it manages. Each type of resource managed by a utility network is called a domain network; the definitions for the types of subnetworks that each domain network manages are called tiers.<\/p>\n With those definitions out of the way let\u2019s look at the tiers associated with the gas and pipeline domain in the Utility Network. The tiers associated with the model are Gas System, Gas Pressure, Gas Isolation, and Cathodic Protection. This article is focused on modeling systems and pressure zones, but the techniques described here also apply to cathodic protection, and isolation zones.<\/p>\n The following diagram shows how the gas tiers are organized using a hierarchy where each isolation zone is contained within a pressure zone, and each pressure zone is contained within a gas system. We will be revisiting this structure in later articles when we examine what happens when we have a pressure zone that belongs to multiple systems or no system at all!<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":1712232,"id":1712232,"title":"Gas Subnetwork Hierarchy","filename":"Gas-Subnetwork-Hierarchy.png","filesize":43247,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-Subnetwork-Hierarchy.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/utility-network\/electric-gas\/creating-gas-subnetworks\/gas-subnetwork-hierarchy","alt":"","author":"304562","description":"Gas Subnetwork Hierarchy","caption":"Gas Subnetwork Hierarchy","name":"gas-subnetwork-hierarchy","status":"inherit","uploaded_to":1712192,"date":"2022-09-14 20:46:48","modified":"2022-09-14 20:47:02","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":1980,"height":1160,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-Subnetwork-Hierarchy-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-Subnetwork-Hierarchy.png","medium-width":446,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-Subnetwork-Hierarchy.png","medium_large-width":768,"medium_large-height":450,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-Subnetwork-Hierarchy.png","large-width":1843,"large-height":1080,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-Subnetwork-Hierarchy-1536x900.png","1536x1536-width":1536,"1536x1536-height":900,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-Subnetwork-Hierarchy.png","2048x2048-width":1980,"2048x2048-height":1160,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-Subnetwork-Hierarchy-794x465.png","card_image-width":794,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-Subnetwork-Hierarchy-1843x1080.png","wide_image-width":1843,"wide_image-height":1080}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":" For those of you who aren\u2019t familiar with how gas models are constructed, here is a brief definition of what each of these tiers does:<\/p>\n In addition to these three gas tiers, there is also a fourth Cathodic Protection tier. A cathodic protection system is a subset of the pipe network which is electro-chemically configured to mitigate corrosion of its metallic components.<\/p>\n Now that you\u2019re familiar with the purpose of each tier, let\u2019s walk through a few examples of how to create subnetwork controllers in a sample dataset so we have a fully connected gas system with several pressure zones.<\/p>\n"},{"acf_fc_layout":"content","content":" First, let\u2019s talk about how to create a subnetwork controller<\/a>. To create a subnetwork controller, you need at least six pieces of information<\/p>\n Even if you\u2019re not familiar with the utility network model, you should be able to quickly identify all of these pieces of information, except for the terminal. Every subnetwork controller is required to have at least two terminals. Depending on the type of device they are associated with these terminals can either be directional or bi-directional. In the case of a compressor the upstream terminal is the low pressure inlet and the downstream terminal is the high pressure outlet. The terminals on a subnetwork controller allow the system to clearly delineate the boundaries of subnetworks, and in the case of pressure differences ensure that subnetworks flow in the correct direction.<\/p>\n Once you\u2019ve identified these six items, you\u2019ll want to look at the lines connected to each of your controllers and figure out which terminal on the device they are connected to. This is a straightforward process for things like custody transfer meters and compressors, but it may be more difficult for devices like regulators if you don\u2019t have clearly defined boundaries for your pressure zones.<\/p>\n"},{"acf_fc_layout":"content","content":" The first thing we need to check before we create this system is to make sure that the topology for the system is valid. You can still create a gas system if you have errors in your data, but you won\u2019t be able to trace or fully update it until all the errors in the system are resolved. For this reason, we recommend utilities adopt a zero-tolerance policy for dirty areas and errors in their database! If you find yourself needing some help resolving these errors I recommend you read the blog I wrote for how to resolve gas topology errors<\/a> or read the online help topic about error management<\/a>. The quickest way to check the number of errors in your utility network is to right-click the utility network layer in your map, select Properties, then look at your Network Properties.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":1712242,"id":1712242,"title":"Zero Topology Errors","filename":"Zero-Topology-Errors.png","filesize":24912,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Zero-Topology-Errors.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/utility-network\/electric-gas\/creating-gas-subnetworks\/zero-topology-errors","alt":"","author":"304562","description":"Zero Topology Errors","caption":"Zero Topology Errors","name":"zero-topology-errors","status":"inherit","uploaded_to":1712192,"date":"2022-09-14 20:50:37","modified":"2022-09-14 20:50:46","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":624,"height":413,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Zero-Topology-Errors-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Zero-Topology-Errors.png","medium-width":394,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Zero-Topology-Errors.png","medium_large-width":624,"medium_large-height":413,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Zero-Topology-Errors.png","large-width":624,"large-height":413,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Zero-Topology-Errors.png","1536x1536-width":624,"1536x1536-height":413,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Zero-Topology-Errors.png","2048x2048-width":624,"2048x2048-height":413,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Zero-Topology-Errors.png","card_image-width":624,"card_image-height":413,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Zero-Topology-Errors.png","wide_image-width":624,"wide_image-height":413}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":" If you see zero errors and zero dirty areas, then you\u2019re in a perfect place to start creating subnetworks! If you have dirty areas, but no errors, then you need to use the validate topology tool to resolve those outstanding issues. If you have errors in your topology then you\u2019ll need to resolve them. Check out our previous blog<\/a> for a guide to resolving the most common topology errors for gas networks if you need a refresher.<\/p>\n Once we have validated all our dirty areas and resolved all our errors, we\u2019re ready to start making subnetworks!<\/p>\n"},{"acf_fc_layout":"content","content":" In the following examples, we will be creating three systems and a pressure zone for the following area in the Gas and Pipeline Referencing Utility Network Foundation<\/a> solution. We have a gathering system on the west area of our map where we are extracting natural gas. This gas is connected to a high-pressure transmission system that provides gas to all the customers in our distribution system on the eastern area of our map. Within our distribution system, we have a high-pressure ring surrounding our city, with the city itself having several pressure zones.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":1712252,"id":1712252,"title":"Gas area of interest","filename":"Gas-area-of-interest.png","filesize":57549,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-area-of-interest.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/utility-network\/electric-gas\/creating-gas-subnetworks\/gas-area-of-interest","alt":"","author":"304562","description":"Gas area of interest","caption":"Gas area of interest","name":"gas-area-of-interest","status":"inherit","uploaded_to":1712192,"date":"2022-09-14 20:51:05","modified":"2022-09-14 20:51:17","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":624,"height":255,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-area-of-interest-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-area-of-interest.png","medium-width":464,"medium-height":190,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-area-of-interest.png","medium_large-width":624,"medium_large-height":255,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-area-of-interest.png","large-width":624,"large-height":255,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-area-of-interest.png","1536x1536-width":624,"1536x1536-height":255,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-area-of-interest.png","2048x2048-width":624,"2048x2048-height":255,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-area-of-interest.png","card_image-width":624,"card_image-height":255,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-area-of-interest.png","wide_image-width":624,"wide_image-height":255}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":" A gathering system is a collection of one or more wellheads that are all collecting natural gas and either storing it for later use or providing it to a transmission system. In our example below we have seven different wellheads acting as a single system.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":1712262,"id":1712262,"title":"Gas Gathering System","filename":"Gas-Gathering-System.png","filesize":36767,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-Gathering-System.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/utility-network\/electric-gas\/creating-gas-subnetworks\/gas-gathering-system","alt":"","author":"304562","description":"Gas Gathering System","caption":"Gas Gathering System","name":"gas-gathering-system","status":"inherit","uploaded_to":1712192,"date":"2022-09-14 20:52:13","modified":"2022-09-14 20:52:20","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":624,"height":476,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-Gathering-System-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-Gathering-System.png","medium-width":342,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-Gathering-System.png","medium_large-width":624,"medium_large-height":476,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-Gathering-System.png","large-width":624,"large-height":476,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-Gathering-System.png","1536x1536-width":624,"1536x1536-height":476,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-Gathering-System.png","2048x2048-width":624,"2048x2048-height":476,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-Gathering-System-610x465.png","card_image-width":610,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-Gathering-System.png","wide_image-width":624,"wide_image-height":476}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":" Because this system has seven controllers, we need to create each wellhead as its subnetwork controller with the following values:<\/p>\n Our transmission system consists of two compressor stations, one connects to our gathering system, and another is located along the pipeline to maintain pressure. These compressor stations ensure that the gas transmission system maintains a consistent, high pressure.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":1712292,"id":1712292,"title":"Gas Transmission System","filename":"Gas-Transmission-System.png","filesize":72652,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-Transmission-System.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/utility-network\/electric-gas\/creating-gas-subnetworks\/gas-transmission-system","alt":"","author":"304562","description":"Gas Transmission System","caption":"Gas Transmission System","name":"gas-transmission-system","status":"inherit","uploaded_to":1712192,"date":"2022-09-14 20:55:26","modified":"2022-09-14 20:55:33","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":624,"height":351,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-Transmission-System-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-Transmission-System.png","medium-width":464,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-Transmission-System.png","medium_large-width":624,"medium_large-height":351,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-Transmission-System.png","large-width":624,"large-height":351,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-Transmission-System.png","1536x1536-width":624,"1536x1536-height":351,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-Transmission-System.png","2048x2048-width":624,"2048x2048-height":351,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-Transmission-System.png","card_image-width":624,"card_image-height":351,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-Transmission-System.png","wide_image-width":624,"wide_image-height":351}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":" We will create a subnetwork controller for each of the compressors in the compressor stations shown on the above map, using the following information:<\/p>\n In our sample dataset, our gas distribution system is fed entirely from a town border station connected to our transmission system, in a real-world scenario there would likely be multiple stations supplying gas to this system.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":1712322,"id":1712322,"title":"Gas distribution system","filename":"Gas-distribution-system.png","filesize":120895,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-distribution-system.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/utility-network\/electric-gas\/creating-gas-subnetworks\/gas-distribution-system","alt":"","author":"304562","description":"Gas distribution system","caption":"Gas distribution system","name":"gas-distribution-system","status":"inherit","uploaded_to":1712192,"date":"2022-09-14 20:56:41","modified":"2022-09-14 20:57:11","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":624,"height":351,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-distribution-system-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-distribution-system.png","medium-width":464,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-distribution-system.png","medium_large-width":624,"medium_large-height":351,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-distribution-system.png","large-width":624,"large-height":351,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-distribution-system.png","1536x1536-width":624,"1536x1536-height":351,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-distribution-system.png","2048x2048-width":624,"2048x2048-height":351,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-distribution-system.png","card_image-width":624,"card_image-height":351,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-distribution-system.png","wide_image-width":624,"wide_image-height":351}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":" We navigate to our town border station and create a subnetwork controller for the custody transfer meter using the following information:<\/p>\n In the same town border station as our custody transfer meter, we also have two regulators that are maintaining a 125-psi pressure system that surrounds the city.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":1712392,"id":1712392,"title":"Gas pressure zones","filename":"Gas-pressure-zones.png","filesize":28628,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-pressure-zones.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/utility-network\/electric-gas\/creating-gas-subnetworks\/gas-pressure-zones","alt":"","author":"304562","description":"Gas pressure zones","caption":"Gas pressure zones","name":"gas-pressure-zones","status":"inherit","uploaded_to":1712192,"date":"2022-09-14 21:11:15","modified":"2022-09-14 21:16:46","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":624,"height":337,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-pressure-zones-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-pressure-zones.png","medium-width":464,"medium-height":251,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-pressure-zones.png","medium_large-width":624,"medium_large-height":337,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-pressure-zones.png","large-width":624,"large-height":337,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-pressure-zones.png","1536x1536-width":624,"1536x1536-height":337,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-pressure-zones.png","2048x2048-width":624,"2048x2048-height":337,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-pressure-zones.png","card_image-width":624,"card_image-height":337,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-pressure-zones.png","wide_image-width":624,"wide_image-height":337}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":" Use the Modify subnetwork Controller pane to set each regulator as a subnetwork controller. Ensure you select the low-pressure out terminal on the regulator to ensure the subnetwork is associated with the lower pressure zone. Each controller name needs to be unique for each controller device, but because this pressure zone has multiple controllers, we will give each regulator for this pressure zone the same subnetwork name.<\/p>\n"},{"acf_fc_layout":"image","image":{"ID":1712352,"id":1712352,"title":"Gas regulators","filename":"Gas-regulators.png","filesize":23422,"url":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-regulators.png","link":"https:\/\/www.esri.com\/arcgis-blog\/products\/utility-network\/electric-gas\/creating-gas-subnetworks\/gas-regulators","alt":"","author":"304562","description":"Gas regulators","caption":"Gas regulators","name":"gas-regulators","status":"inherit","uploaded_to":1712192,"date":"2022-09-14 20:59:09","modified":"2022-09-14 21:01:05","menu_order":0,"mime_type":"image\/png","type":"image","subtype":"png","icon":"https:\/\/www.esri.com\/arcgis-blog\/wp-includes\/images\/media\/default.png","width":864,"height":575,"sizes":{"thumbnail":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-regulators-213x200.png","thumbnail-width":213,"thumbnail-height":200,"medium":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-regulators.png","medium-width":392,"medium-height":261,"medium_large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-regulators.png","medium_large-width":768,"medium_large-height":511,"large":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-regulators.png","large-width":864,"large-height":575,"1536x1536":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-regulators.png","1536x1536-width":864,"1536x1536-height":575,"2048x2048":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-regulators.png","2048x2048-width":864,"2048x2048-height":575,"card_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-regulators-699x465.png","card_image-width":699,"card_image-height":465,"wide_image":"https:\/\/www.esri.com\/arcgis-blog\/app\/uploads\/2022\/09\/Gas-regulators.png","wide_image-width":864,"wide_image-height":575}},"image_position":"center","orientation":"horizontal","hyperlink":""},{"acf_fc_layout":"content","content":" Now that you\u2019ve seen how to create gas systems and pressure zones using the Gas and Pipeline Referencing Utility Network Foundation<\/a> you should start developing a plan for subnetwork management. Ask yourself the following questions:<\/p>\n Leveraging the Utility Network subnetwork capabilities is allowing natural gas organizations to better represent real-world pipe networks. A representation that helps everyone in the organization to better understand the engineering marvel they have built and maintained.<\/p>\n With this information, you can start creating your gas subnetworks! You can find the entire collection of these articles in the Learn ArcGIS Utility Network for Gas and Pipeline<\/a> learn series as well as these hands-on tutorials related to this article:<\/p>\n\n
What is a Subnetwork<\/h2>\n
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Creating a Subnetwork Controller<\/h2>\n
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Topology Errors<\/h2>\n
Area of Interest<\/h2>\n
Creating a Gas Gathering System<\/h2>\n
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Creating a Gas Transmission System<\/h2>\n
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Creating a Gas Distribution System<\/h2>\n
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Creating a Gas Pressure Zone<\/h2>\n
Next Steps<\/h2>\n
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