Program Overview

In this scenario, users will be required to complete the task of investigating possible gas leaks outside dwellings and buildings. Multiple types of leaks may be present. Using available tools and resources, they must determine the source of the leak and take the appropriate steps to resolve the issue.

For a video walkthrough of the module, click this link: OLI Walkthrough

Core Learning Objectives

• Detection — Finding the leak source

• Classify — Properly classify the grade of a leak and respond appropriately

• Marking — Use of provided tools to mark and tag leak

• Safety Device / Hazard Recognition

  • Safety devices in good order

  • Debris / impediment clearing and notification

• Reporting / Documentation — Step taken / resolution / documentation

Tools

How to use each tool in the Toolbox: (open Wrist Menu > Toolbox to access)

• Laser Pointer — To interact with menus and objects, aim the laser pointer at the item and pull the trigger on the controller to select it.

• CGI Tool — To take a reading, aim the tool and pull the trigger on the controller.

• Soap Spray — To test for a leak once an abnormal reading is found, aim and pull the trigger on the controller.

  • If bubbles appear, there is a leak.

  • If there are no bubbles, the leak is coming from somewhere else.

• Spray Marker — If a leak is discovered, mark the leak’s location by pulling the trigger on the controller. 

• Voltage Pen — To inspect meters for electric current, place the pen tip near the meter to detect if it is electrified.

  • If electric current is present, the tip will light up red and beep.

• Rock Drill — To drill holes in concrete or asphalt to check for gas, aim the tool and pull the trigger on the controller.

• Plunger Bar — To place the probe and create bar holes, pull the trigger on the controller.

• Shovel — To dig up partially buried gas meters, aim at the gas meter and pull the trigger on the controller.

• Traffic Cone — To block off the street and mark opened manhole covers, pull the trigger on the controller to place traffic cones.

• Valve Shut Off — To turn off gas flow at mainline valves, pull the trigger on the controller.

• Crescent Wrench — To turn off a gas meter, pull the trigger on the controller.

How to Get 100%

1. Open Work Order

2. Locate Customer's House

   1. Select Show Facility Location to find the customer's home on the Service Map.

3. Walk to Customer's House

   1. Select the door using the laser pointer and select Knock on the Door

   2. If they did not call, check with nearby NPCs

4. Locate and Report AOCs (if present)

   1. Possible AOCs — Damaged Meter Missing, Damaged, Severe Tilt, Corrosion, Buried

   2. Report through Wrist Menu > Communication Menu > Abnormal Operation Condition (AOC)

      1. Select Company Dispatch and Supervisor, then Immediately

      2. For Partially Buried Meters — Use Shovel from Toolbox to Dig Up, then Report to Supervisor

5. Locate and Report Hazards (if present)

   1. Possible Hazards — Vicious Dog, “Beware of Dog” Sign, Locked Gate, Wasp Nest, Poison Ivy, Ant Hill, or Pothole

   2. Report through Wrist Menu > Communication Menu > Safety Hazard

      1. Select Customer, then Immediately

         1. If Hazard is Removed — Continue Investigation

         2. If Hazard is Not Removed — Report to Supervisor and Company Dispatch, Immediately

            1. Then End Scenario (Wrist Menu > Enter Review Room)

6. Locate the Gas Leak

   1. Use CGI and Barhole Tools (located in Wrist Menu > Toolbox) to take Readings

   2. Possible Leak Locations:

      1. Underground Piping Mains/Services

      2. Main Line Valve Box

      3. Water Valve Box

      4. Centerline Sewers — request assistance, check all buildings for gas, and vent immediately

      5. Storm Drains

      6. PVC Venting

      7. Cracks in Pavement/Sidewalk

      8. Dying Grass

      9. Bubbling Puddle in Re-Filled Hole

      10. Gutter Downspout

7. Classify the Leak

   1. Check for definitions of each leak grade within the Wrist Menu by selecting Reference Material > Leak Grade Card.

   2. Grade 1 — Hazardous. Act immediately.

      1. Ignited gas leak is present

      2. Indication gas has migrated into/under building

      3. Reading within 5ft of outside wall of building

      4. Reading of ≥80% LEL in confined space

      5. Reading of ≥50% LEL in mainline or centerline sewers

   3. Grade 2 — Fix or re-classify within 30 days.

      1. Reading ≥80% LEL in ground level transformer, phone/cable box, sewer, drain, telephone or electric access boxes

      2. Reading 20-79% LEL in confined space

      3. Reading ≤50% LEL in mainline or centerline sewers

      4. Reading in parkway/unpaved alley >50% LEL

   4. Grade 3 — Not hazardous, and is not likely to change. Check every 90 days to see if the leak is gone or needs to be re-classified.

      1. Unlikely gas could migrate to outside wall of building

         1. Hint: Leak in street, or areas without wall to wall pavement

      2. Reading <20% LEL in confined space

      3. Reading <80% LEL in small substructure

8. Report Leak and call for assistance based on the Leak’s Classification

   1. Grade 1 — Implement Emergency Procedures, then Report and Document

   2. Grade 2 & Grade 3 — Report and Document

9. Recheck Areas and Document through the Wrist Menu

   1. Who to Report to:

      1. All Good — Supervisor

      2. Repairs Needed — Supervisor and Dispatch

      3. Emergency — Supervisor, Dispatch and Emergency Services

10. End Scenario by Selecting Submit with Final Report (or through Wrist Menu > Enter Review Room)

For a more detailed walkthrough of the Inside Leak Investigation module, see the Outside Leak Investigation User Guide.