Latest Contributions by RobertKrisher

As always, I defer to @TomDeWitte on all Gas and Pipeline matters, but this is my understanding based on my time spent implementing cathodic protection in GIS for gas utilities. From an electrical perspective, you are correct that it would make sense to model the rectifier (source) or anodes (sink) as subnetwork controllers. However, from a regulatory perspective each zone is considered a cathodic structure and is typically associated with a set of specific test points. Because of this many of these gas companies already have a database that lists out the structures and test points for each cathodic structure, which makes it easier to create and validate this information in the utility network, as well as integrate it for compliance purposes. For more information on the compliance side of things, read Tom's One Source of Truth for Cathodic Protection. For more general information on how CP works, read Tm's Understanding Cathodic Protection for GIS & IT Professionals. @EdwardBlair you probably already know all the info in those two articles, but others reading this comment or post in the future may benefit from the information. ... View more

The fastest way I've found to do this on Enterprise is to use the ArcGIS API for Python. That's a weird response your getting, and my guess is you should be getting an error instead (check the server logs). The problem is that your starting locations are missing required fields. You're only providing a type and globalid, but you need to provide at least one additional value, depending on whether the starting location is a point or line: If you're running isolation traces from lines that can get tricky, because you aren't required to split lines at valves so you could potentially be missing out on results. This is why I'll usually try to pick some piece of equipment like a meter or a corp stop as my starting points, but put in skip logic to ensure I don't process the same area multiple times. If you are open to using a community sample written in C#, there is a batch trace community sample available that does all of this (including the skip logic). You just need to compile and run it. You would partition your network using your mains, then set up a named trace configuration to run a connectivity trace that stops at isolation devices. In fact ... there are already sample configuration files that do this for the standard naperville model, so you'd just need to adjust them to account for any schema changes you've made (Partition_Water_Isolation). You can use the link in the partition markdown page to access them:   ... View more