SWG Flashcards

(96 cards)

1
Q

Purging is the process of?

A

-Displacing air from pipelines and replacing it with gas
-Displacing gas from a pipeline and replacing it with air
- Removing foreign materials from new or existing pipelines in a safe manner.

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2
Q

The purge stack must not be directed at ?

A

People, animals, doors, windows, eaves, equipment of sources of egnition and power lines.

Away from as much things as possible.

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3
Q

What does 10/8 mean?

A

Done/finished

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4
Q

What does 10/19 mean?

A

On the way

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5
Q

How do you know when a rider is corroded ?

A

Bubbling, Pitting, metal loss

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6
Q

What does EOC mean?

A

Emergency Operation Conditions

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7
Q

What is a EOC?

A

-Needs to be repaired ASAP

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8
Q

What is 2 different sewer reads identified as?

A

Automatic EOC

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9
Q

True or false-

If there is a 4” or 6” line break it is up to you if it’s a EOC or not

A

True

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10
Q

What is the definition of UOC?

A

Unusual operating conditions

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11
Q

What is a UOC?

A

-assigned to crew leaders
- Basically a uoc is where we go and check if it’s an actual emergency and something that needs to be fixed
- Heath ( company who is a surveying contractor who searches for leaks & corrosion searches for these)
- Downtime is when we do uoc’s

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12
Q

What is the definition of an AOC?

A

Abnormal Operating Condition

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13
Q

What is a AOC

A
  • ALWAYS A AOC UNTIL WE DETERMINE ITS A UOC
  • example is if we see a riser that is corroded
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14
Q

What are the requirements for Sanding ?

A

6” of sand underneath pipe called patting

6” of sand on top of pipe called shading

1” on both sides

Relatively rock free

3/8 screen

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15
Q

PGT mode on the gs700 is used for what?

A

Sewer calls

If you get 20lel in barhole mode you switch it to pgt mode to confirm it is natural gas or sewer gas.

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16
Q

What is the Swedge?

A

Transition from pipe to steel

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17
Q

If a Swedge on a riser is corroded, does it have to be replaced?

A

Yes

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18
Q

What is the 2-4-5 rule?

A

2 FT from the hole
4 FT you need a ladder
5 FT shoring ( 5 feet or more deeper you need shoring )

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19
Q

What does LEL mean?

A

Lower Explosive Limit

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20
Q

What does 20LEL = to ?

A

1% gas

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21
Q

What is the red zone?

A

red zone is a precaution that needs to be taken when the backhoe is down and it means to stay out of the swing zone of the back hoe

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22
Q

How many outages does there have to be for it to become reportable?

A

10 or more and you have to report it to dispatch and supervisors

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23
Q

How deep does your barholehave to be to get readings?

A

At least 18”

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24
Q

What is the clearance of each side of the trench when on a paved road for plates?

A

18”

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25
What is the clearance for a trench on a dirt road when putting a plate on it?
24” (2ft)
26
What does Bypass mean?
When you Isolate a section of the pipe without turning off the gas
27
Why do we bypass?
Anytime it’s one way fed they want us to bypass if we can - we bypass we can to avoid major outages.
28
What is the pipe clearance from other utilities?
Our pipe must be 12” or 1 ft away from other utilities.
29
What do we do if our pipe clearance from other utilities can not be met?
If our clearance can’t be met then we use our sleeving
30
What does MAOP mean?
Maximum allowable operating pressure
31
What does MAOP mean?
Absolute max that can go into the pipe - that is the maximum pressure that we can put in our pipe line that it was tested for.
32
How do we determine what we test new pipe at?
1 in a half 2 times maop is how we determine what we test at for new pipe
33
How do we determine what we test existing lines / pipe at?
Mop - maximum operating pressure Operating pressure that we set in the facility. What the system is holding at that moment.
34
What is Mop
maximum operating pressure Operating pressure that we set in the facility.
35
Can we squeeze on a previous squeeze?
No
36
How long is a squeeze good for?
8hrs
37
What happens when you are approaching the 8hr mark for a squeeze?
You have to take the squeeze off and move the squeeze at least a foot away from the previous squeeze.
38
What happens when you go past the 8hr mark for a squeeze?
You have to section out that squeeze
39
How far does the riser have to be from the foundation of a home?
10-12” (1ft)
40
How far does the riser have to be from the house line?
18”
41
What grade is the following? - any leak that can be seen, heard or felt and which is in a location that may endanger the public or property
Grade 1
42
How far does a squeeze have to be from any fitting, fusion, or any other squeezes?
-12” (1ft) or 3 times the pipe diameter, whatever is greater away from a fitting,fusion, or any other previous squeezes in the past.
43
How many times do you squeeze for a 1 way fed line?
1 time
44
How many times do you squeeze for a 2 way fed line?
2 times
45
Why is it important to know if a main is 1 way or 2 way fed or 3 way fed?
So we know how many times to squeeze.
46
What are the approximate pound increments for tightening each bolt on a perfection coupling?
5-10 pounds until reaching 50-55 pounds You use a torque wrench to do this
47
What does HVTT mean?
High Volume Tapping Tee
48
What kind of pipe is all yellow pipe?
8100
49
What kind of pipe is black with a yellow stripe?
8300
50
What kind of pipe is yellow with a black stripe pipe?
8400
51
How long is 8100 good for?
3 years
52
How long is 8300 good for?
10 years
53
How long is 8400 good for ?
3 years
54
What time of pipe is on the end of risers?
8300
55
What type of type of pipe do we install?
8400
56
What type of black pipe was installed in 1970’s
7000
57
What type of black pipe was installed in the 1980’s?
8000
58
When do you add an efv?
- main to service disconnect - Customer request - New install
59
How long do you have to hold the survey cone down when surveying ?
3-5 seconds
60
When surveying with cone how many feet do you do apart?
Every 3ft
61
When do we set up for a 24hr follow up?
- any time we irate - Anytime you evac
62
When do you set up for a 30 day follow up ?
if you have residual reads
63
What does 106 line mean ?
Cut and cap line
64
65
66
What grade is the following ? -In or under any building or tunnel
Grade 1
67
What grade is the following? -blowing at the surface
Grade 1
68
69
What is sanding under the pipe called?
Patting
70
What is sanding on top of the pipe called?
Shading
71
How many inches is in a ft?
12”
72
What does rod mean?
Reduce outer diameter
73
What are the approximate pound increments for tightening each bolt on a perfection coupling ?
5-10 pounds until reaching 50-55 pounds. You use a torque wrench to do this
74
Locate markings: labels will not exceed how many feet in spacing?
10ft on property 50ft on street
75
What is a door tag?
We leave a door tag when the customer is not home to let them know there gas is shut off or that we will be coming by for something later
76
What is a mi tag ?
Material investigation tag that you put on pipe or fitting of component has to be turned into lab to be investigated
77
What is a tic tracer ?
A tool we use that checks for an electric current on a meter or tracer wire
78
How many times does tracer wire have to be wrapped around a meter?
3 times
79
What does dov mean?
Dispatch viewer operation
80
What is the tolerance of pipe?
24” + pipe size
81
Where do we place pins on plates ?
-Flow of traffic - minimum 2 pins per plate
82
When purging with an efv what do we use?
A drill bit 40
83
Why do we use a drill bit 40 when purging an efv?
Because the tiny hole on top releases just a little bit of pressure so it doesn’t trigger the efv
84
When do we use a riser repair kit?
When there is slight corrosion but when it is super bad we will replace the whole riser
85
What repair clamp can be used for a temporary repair on Pe?
Smith Blair 225 -can’t exceeds more than 30 days
86
While electrofusing how long does a 6” coupling or tee have to be clamped for?
15 min for a coupling and tee
87
While electrofusing how long does a 6” elbow have to be clamped for?
20min for an elbow
88
What does hvtt mean?
High volume tapping tee
89
Do fittings have to be a certain amount of length apart?
No, fittings can be right next to eachother and don’t need to be a certain length apart.
90
What is a whip
The pipe that we put at the end of the riser We add our test tree to the whip to test our risers and service lines
91
What is a branch service ?
When there is a line that connects to the street and branches off with a tee to two different meters
92
When do you know when to stop squeezing when using the lico tool?
You squeeze to the last spicket/barb
93
What does inline mean
On
94
What does cross lined mean
Off
95
96