1
Electromagnetic equipment for locating pipelines consists of which of the following?
Transmitter and receiver
When you get to the excavation site, what color marker would indicate where the excavator will be digging?
White
Carbon Monoxide is much lighter than air
False
All gas leaks and reports of gas odor are potential dangers to life and property
True
If a roof is Over 20/12 to 21/12 how high does the vent need to be from the lowest discharge opening?
8.0 ft
What color markers indicate natural gas?
Yellow
What is the required shut in test time on a meter with a ½ ft test dial?
5 minutes
On a turn on, when checking for leakage with a manometer, why do you bleed the pressure down slightly below the set point to start your test?
To verify inlet valve is not leaking by
If you arrive at a customer’s home on a gas leak call and the customer is not home you should
Complete an outside leak investigation
REQUIRED ORANGE CONE USE- . Commercial motor vehicles, construction vehicles and pickups shall require an orange cone that is a minimum of how many inches?
Commercial motor vehicles, construction vehicles and pickups shall utilize 28 inch tall cones equipped with reflective stripping,
BLACK HILLS CORPORATION COMPANY POLICY Procedure No. S&H – 084
5.3.1.
Departments/Safety and Health/Policies and Procedures Safety and Health Updated/084
Natural gas consists primarily of which two gases?
Methane and ethane
The Mueller H-17010 No-Blow Valve Changer is rated to a maximum working pressure of 90 PSI
False
Which TWO choices are types of appliance draft?
Mechanical Draft
Natural Draft
When responding to an outside gas leak, where should the investigation begin
Inside the complaint structure
what is Medium-heat appliances ,Single-Wall Metal Pipe Minimum Distance from Combustible Material
36in
Per Federal Regulations, valves needed for safe operation must be checked:
Annually, not to exceed 15 months
Which CGI free air reading would be classified as a Code 10?
50 ppm
An appliance shut off valve shall be located within how many feet of the appliance it serves?
6 feet
Gas meters should be read from right to left, and recorded from left to right.
True
All CGIs operate by measuring _______ and _______ gas in air concentrations.
low, high
If a gas appliance is in a bedroom closet then the closet door must be:
Solid
Appliances installed in residential garages must be installed so that all burners are:
not less than 18 inches above the floor
What is the leading cause of call-backs during the first month after meter installation?
Malfunctions due to foreign materials