SWG Flashcards
(96 cards)
Purging is the process of?
-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.
The purge stack must not be directed at ?
People, animals, doors, windows, eaves, equipment of sources of egnition and power lines.
Away from as much things as possible.
What does 10/8 mean?
Done/finished
What does 10/19 mean?
On the way
How do you know when a rider is corroded ?
Bubbling, Pitting, metal loss
What does EOC mean?
Emergency Operation Conditions
What is a EOC?
-Needs to be repaired ASAP
What is 2 different sewer reads identified as?
Automatic EOC
True or false-
If there is a 4” or 6” line break it is up to you if it’s a EOC or not
True
What is the definition of UOC?
Unusual operating conditions
What is a UOC?
-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
What is the definition of an AOC?
Abnormal Operating Condition
What is a AOC
- ALWAYS A AOC UNTIL WE DETERMINE ITS A UOC
- example is if we see a riser that is corroded
What are the requirements for Sanding ?
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
PGT mode on the gs700 is used for what?
Sewer calls
If you get 20lel in barhole mode you switch it to pgt mode to confirm it is natural gas or sewer gas.
What is the Swedge?
Transition from pipe to steel
If a Swedge on a riser is corroded, does it have to be replaced?
Yes
What is the 2-4-5 rule?
2 FT from the hole
4 FT you need a ladder
5 FT shoring ( 5 feet or more deeper you need shoring )
What does LEL mean?
Lower Explosive Limit
What does 20LEL = to ?
1% gas
What is the red zone?
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
How many outages does there have to be for it to become reportable?
10 or more and you have to report it to dispatch and supervisors
How deep does your barholehave to be to get readings?
At least 18”
What is the clearance of each side of the trench when on a paved road for plates?
18”