Safety and Miscellaneous
Construction
Cathodic Protection
Regulator Stations and Meter Sets
Leak Management
100
Most accidents occur because of these.
What are Unsafe Acts.
100
Any single piece of pipe tested to a lower pressure than the rest of the system will set this for the entire system.
What is Maximum allowable operating pressure (MAOP).
100
Areas of the pipeline which are above ground and not properly coated may be subject to this type of corrosion.
What is atmospheric corrosion?
100
A device in series where the primary regulator shuts off flow to the customer without venting gas if the primary regulator exceeds a "safe" delivery pressure.
What is a shutoff valve?
100
Any subsurface structure (vaults, tunnels, catch basins, or manholes) of sufficient size to accommodate a person and in which gas could accumulate.
What is a confined space?
200
Atmospheric oxygen concentration below 19.5% or above 23.5%.
What is a hazardous atmosphere?
200
The minimum pipe size for casing vents under roadways and railways.
What is 2 inches?
200
This device is commonly used to take pipe to soil voltage readings.
What is a half cell?
200
Each distribution system supplied by more than one district pressure regulating station must be equipped with this to indicate the gas pressure in the district.
What is telemetering or recording pressure gauges?
200
These are 2 of the 4 methods that may be employed in order to leak survey or test for leaks.
What are: surface gas detection survey, subsurface gas detector survey, pressure test drop, and/or bubble leakage test.
300
Following an emergency situation, this person will conduct an investigation to review employee activities.
Who is the Operations Manager, Director of Regulatory Compliance, or designated supervisor.
300
Traffic control for construction work shall conform to this manual.
What is the Uniform Traffic Control Devices for Streets and Highways.
300
To prevent corrosion, valves with welded ends are generally used. However, both of these must be carefully sealed in order to use this type of valve.
What are bolts and flanges?
300
Meters are installed at least this amount above grade and be protected from corrosion
What is 12 inches?
300
The effectiveness of the leak detection and repair program may be evaluated by performing these.
What are self-audits?
400
Traffic lighting control boxes.
What are sources of ignition?
400
This release rate (or less) should be maintained to minimize pipe material damage during squeeze off procedures.
What is 0.5 inches/minute?
400
The normal means for attaching test wire leads to steel pipe.
What is CAD (thermite) welding?
400
The minimum distance required for the connection for downstream control line pipe to the outlet of the regulator body.
What is 8 pipe diameters.
400
A test to determine if an isolated segment of pipeline loses pressure due to leakage.
What is a Pressure drop test?
500
Includes the loss of 25-49 customers.
What is a Level 2 Emergency?
500
Two methods accepted by YCNGA engineering standards to mitigate static electricity.
What is using soapy water and burlap AND suppressant spray (Ionix Reach Tool & spray)?
500
A possible short may exist, or a decrease in pipe voltage will decrease, in the presence of either of these.
What is extremely dry weather OR extensive coating damage?
500
When designing and installing over pressure protection equipment, consider these three items.
What is protection for relief valve stacks, selection of the type of over pressure protections, evaluation of the need for redundant protections.
500
Along the route of the main or pipeline, sampling points should be placed at twice the distance between the pipeline and the nearest building wall, or at 30 feet, whichever is shorter; but the spacing should not be less than 10 feet.
What is a subsurface gas detection survey?
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