OQ -6201 Pipe Coating Inspection

Question 1

What are the approved manufacturers for pipe - coating inspections?

Answer 1

TINKER - RASOR MODELS AP/APE
D.E STEARNS MODELS 14/20
SPY MODELS 715/725

Question 2

What is a holiday detector ?

Answer 2

Used to detect holidays (pinholes, scratches, or other protective coating flaws) on steel pipe

Question 3

What do you use to inspect condition of wrap anytime pipe is exposed ( new or existing)

Answer 3

Holiday detector
Visual inspection

Question 4

True or false all newly constructed steel pipelines must have the pipe coating inspected with a holiday detector prior to the pipe into the excavation

Answer 4

True

Question 5

If a newly constructed steel pipeline has been lowered into the
Excavation and left exposed overnight, are we supposed to reinspect it with a holiday detector prior to lowering the pipe into X excavation

Answer 5

Yes, we are supposed to reinspect it

Question 6

What can be used on a irregular steel fitting that are not accessible with the spring type electrode?

Answer 6

A brush type electrode

Question 7

Are you allowed to use electrode springs or brushes that are contaminated with foreign material such as dirt, mud or other contaminants?

Answer 7

No, do not use electrode springs that have been contaminated

Question 8

Pipe links, 20 feet and longer when fully exposed all sections of existing pipelines must have the pipe code inspected with a holiday detector true or false

Answer 8

True

Question 9

 pipe diameter 4 inches and larger recommended for all lengths of pipe 2 inch diameter and larger must be inspected with a holiday detector

Answer 9

True

Question 10

Verify the blank blank range setting of the holiday detector daily when the unit is being used with the PRM peak, meter

Answer 10

Specific voltage range

Question 11

Where do you refer to for the procedure for various pipe coating type voltage settings?

Answer 11

Referred to table one in the corrosion control section

Question 12

For pipe inspection for corrosion are you supposed to inspect condition of pipe anytime wrap has been removed

Answer 12

Yes

Question 13

For pipe inspection are you supposed to inspect pipe coupons after tapping and plugging operations?

Answer 13

Yes

Question 14

Who do you report any evidence of corrosion to?

Answer 14

The appropriate supervisor

Question 15

Document pipe condition on LMR form, blank or electronic equivalent WMS

Answer 15

230.0

Question 16

If coupons show internal corrosion, send coupon along with documentation to the what supervisor

Answer 16

Division corrosion control supervisor