Atmospheric Corrosion/Operation of MSA
Where is atmospheric corrosion found on risers?
At ground level
pipeline marker
When is the area secured?
What is used to mark an unpaved surface?
Approved paint, stakes, flags or whiskers
An equipment operator must have a what during excavation?
Designated observer (spotter)
What are two protective coatings on risers?
how do you place and model 600 marker?
looped at end of stubs or end of mains
What actions does the "first person" on the scene initiate?
Take action to protect people on property and utilize form 295.1 to initiate ICS
What should a complete southwest gas mark have?
Company abbreviation, underscore, size, material, and type
During boring operations bore path must be located and marked at every ?
All components of an MSA must be protected with?
Primer and paint except meter lens, brass tags, and meter i.d tags
What are the marker specification?
warning or caution, gas pipe line, name of company, division, phone number
What do you do when a command changes?
Exchange information to new command and notify change of command to dispatch.
How many marks should be placed at street crossings?
three
Where are boring operations not permitted?
Near sewer laterals, sewer pipes, or septic facilities
Where is atmosphere corrosion found at?
Riser and MSA
Where are pipeline markers required?
canals, flood channels, bridges, exposed spans, and water crossings
What is the order of contact for emergencies?
1. answer 911
2. southwest gas
3. supervisor
What is a trouble locate?
When gas lines can't be identified by electronic signal and supported documentation.
What are early warning signs that a gas facility must be present?
Locate marks, trench lines, locate wire, yellow warning tape, and sand/sift.
Areas of atmosphere corrosion must be
replaced, repaired, and reported
what marking can you find at curbs?
Das markers
What is the biggest concern on a gas emergency?
gas migration
What form do you document your locate on?
Form 127.1
What are extreme ground excavation conditions?
Caliche, rocks, roots, and other buried facilities.