CIP Level 2-Nace. Exam 1 Questions With 100%
Verified Correct Answers.
Describe what the characteristics of a heavy flash rusted surface are. 7-5
Rust that is loosely adherent, easily comes of, & leaves significant marks on a cloth that is lightly
wiped over the surface.
Describe what the characteristics of a moderate flash rusted surface are. 7-5
Rust that is reasonably well adherent and leaves light marks on a cloth that is lightly wiped over
the surface.
Describe what the characteristics of a light flash rusted surface are. 7-5
Rust that is tightly adherent & not easily removed by lightly wiping with a cloth.
At what psig is low-pressure cleaning preformed at? 7-2
below 5000 psig
At what psig is high-pressure cleaning preformed at? 7-2
5000-10,000 psig
At what psig is high-pressure waterjetting preformed at? 7-2
10,000-30,000 psig
At what psig is ultrahigh-pressure waterjetting preformed at 7-2
above 30,000 psig
What does waterjetting not create? 7-1
An anchor profile
In the marine industry, waterjetting is widely used for what purposes? 7-1
Removal of marine growth, depleted antifouling coatings and surface preparation of tank/hold
interiors
, What industries is waterjetting particularly well suited for? 7-1
Marine, process and utility industries.
What standard specifies the amount of non visible contaminants that are allowed to be left
on the surface? 7-5
None. If the coating specification does not require testing, the inspector should not request the
contractor to do so or do so on his own accord.
What parts does a commercial waterjet unit consist of? 7-6
pumps, hoses, prime mover, and various tools such as guns, nozzles and lances
What should the minimum burst strength of high-pressure equipment be? 7-7
2 1/2 times the capability of its maximum-rated operating strength.
What is the safety device that high-pressure hoses are fitted with? 7-7
whip-lock or whip check
What is the section of hose next to the gun fitted with? 7-7
hose shroud
What are the two basic categories that waterjetting equipment fall into? 7-7
Manual & Robotic
What category does the majority of waterjetting fall into? 7-8
manual
What is the effect when waterjetting at pressures lower that 10,000psig?
loose rust, debris, and material in depressions and pits are removed but magnetite remains. A
matte finish is not achieved.
Describe what robotic waterjetting is. 7-8
It is a cleaning vehicle that attaches itself, using vacuum, cables or magnet to a vertical,
horizontal or overhead surfaces.
Verified Correct Answers.
Describe what the characteristics of a heavy flash rusted surface are. 7-5
Rust that is loosely adherent, easily comes of, & leaves significant marks on a cloth that is lightly
wiped over the surface.
Describe what the characteristics of a moderate flash rusted surface are. 7-5
Rust that is reasonably well adherent and leaves light marks on a cloth that is lightly wiped over
the surface.
Describe what the characteristics of a light flash rusted surface are. 7-5
Rust that is tightly adherent & not easily removed by lightly wiping with a cloth.
At what psig is low-pressure cleaning preformed at? 7-2
below 5000 psig
At what psig is high-pressure cleaning preformed at? 7-2
5000-10,000 psig
At what psig is high-pressure waterjetting preformed at? 7-2
10,000-30,000 psig
At what psig is ultrahigh-pressure waterjetting preformed at 7-2
above 30,000 psig
What does waterjetting not create? 7-1
An anchor profile
In the marine industry, waterjetting is widely used for what purposes? 7-1
Removal of marine growth, depleted antifouling coatings and surface preparation of tank/hold
interiors
, What industries is waterjetting particularly well suited for? 7-1
Marine, process and utility industries.
What standard specifies the amount of non visible contaminants that are allowed to be left
on the surface? 7-5
None. If the coating specification does not require testing, the inspector should not request the
contractor to do so or do so on his own accord.
What parts does a commercial waterjet unit consist of? 7-6
pumps, hoses, prime mover, and various tools such as guns, nozzles and lances
What should the minimum burst strength of high-pressure equipment be? 7-7
2 1/2 times the capability of its maximum-rated operating strength.
What is the safety device that high-pressure hoses are fitted with? 7-7
whip-lock or whip check
What is the section of hose next to the gun fitted with? 7-7
hose shroud
What are the two basic categories that waterjetting equipment fall into? 7-7
Manual & Robotic
What category does the majority of waterjetting fall into? 7-8
manual
What is the effect when waterjetting at pressures lower that 10,000psig?
loose rust, debris, and material in depressions and pits are removed but magnetite remains. A
matte finish is not achieved.
Describe what robotic waterjetting is. 7-8
It is a cleaning vehicle that attaches itself, using vacuum, cables or magnet to a vertical,
horizontal or overhead surfaces.
