OGI Workflow

Recording OGI inspections

1. Check out your tours.
    
2. Perform an OGI Sensitivity Check via the Main Menu. Fill in the fields and select or deselect the check boxes. If you wish to attach a photo or a video for the sensitivity check, take the photo or video and tap either Tag Photo or Tag Video.
    

   • Pressure and flow rate are crucial for OGI sensitivity checks, specifically using controlled, known flow rates (like grams/hour) of test gases (methane, propane, n-butane) to establish the maximum viewing distance for a specific camera and conditions, as mandated by regulations like EPA's 40 CFR Appendix K for verifying the camera's capability daily before surveys. Why they're needed:

     1. Regulatory Compliance (e.g., EPA 40 CFR App. K): These rules require daily field checks to ensure the OGI camera can still see leaks under current conditions.
         
     2. Establishing Operating Envelope: Operators set up a known flow rate (e.g., 19 g/hr methane) and find the farthest distance they can detect it, defining their daily limits.
         
     3. Gaseous Leak Quantification: While OGI sees the plume, quantifying the actual leak rate often involves correlating the visual signal with ppm readings and known flow rates, using gas composition and absorption properties.
         
     4. Controlling Variables: Flow rate (and by extension, the pressure driving it) is a key variable, alongside wind speed and temperature, that impacts plume dispersion and visibility.

     In essence, you're not just checking if the camera works; you're proving it can detect a specific, regulatory-defined leak rate under real-world conditions, which directly involves controlling the gas's release (flow) and understanding the system's (pressure) context.
      

3. Start a tour and adjust sorting preferences when necessary.
    
4. Tap the first tag on the list. In the Quick View, tap the 3-dot icon to open the Action Menu and tap OGI Survey to enter the present environmental conditions. If the conditions change later, remember to update the OGI Survey records.
    
5. Confirm the inspection type and ensure the tag is an OGI spot. Take an OGI photo or video, tap OGI Done and select the camera ID.
   • Note: Always mark an OGI Spot as “Done,” not “Fail,” as you can only fail a real component like a valve.
      
6. On the Input Inspection Details screen, tag the photo and the video when applicable. Comments are optional. Tap Save when done.
    
7. After completing this tag’s inspection, you will automatically be taken to the next one. If a leak was found, you can choose to go back to the previous OGI Spot and add the leaking component, or handle all the leaks after all the OGI Spots are done.

Creating OGI Leaks

1. Tap Prev in the Quick View to go to the OGI spot where the leak was discovered, or find them in the tour.
    
2. Use Copy to Add or Add Via Photo options to create the leaking component. In either case, use OGI Leak as the Active Why.
   • Note: Copy to Add is recommended if only a few components were found leaking in one OGI spot. Add Via Photo is recommended where there are lots of leaking components in one OGI spot. See additional details here.
      
3. After being automatically taken to, or manually entering the new component tour, perform the inspections to open the leak on the newly-added components. Confirmed the inspection type. OGI is the default, but some regulations require M21 confirmation of the leak instead.
    
4. Follow the OGI procedures above, or M21 procedures here.
    
5. If repair attempts and retests are required, follow the procedures here.