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API 510 Test 6:
Q. 1/30: Indications of leaks in buried piping may include several indications. Which of the ones listed below is NOTone of the indications ?
A change in the surface contour of the ground.
Water standing on the pipeline right-of-way
Discoloration of the soil
Notice odour
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Q 1/30
Test Progress : 3.33%
Q. 2/30: Corrosion cells can form on both bare and coated pipe where bare steel contacts the soil. How can these cells be detected ?
Run an acoustic emission test on the piping
Visually survey the route of buried piping
The potential at the area of corrosion will be measurable different than other areas and a close-interval potential survey can detect the location of corrosion
Run an internal survey of the piping using a video camera
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Q 2/30
Test Progress : 6.67%
Q. 3/30: A pipe coating holiday survey is used to locate coating defects on coated pipes. It can be used on newly constructed pipe systems to ensure that the coating is intact and holiday-free. More often, it is used on buried pipe to :-
show the measurable differences in electrical potential in corroded areas
evaluate coating serviceability for buried piping that has been in-service for along time.
determine the depth of the piping for resistivity testing
evaluate the cathodic protection components of the under-ground pipe
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Q 3/30
Test Progress : 10.00%
Q. 4/30: Cathodically protected buried piping should be monitored __________ to assure adequate levels of protection
regularly
intermittently
erratically
frequently
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Q 4/30
Test Progress : 13.33%
Q. 5/30: If an "intelligent pigging" system is used to inspect buried piping, what type of bends are usually required in the piping system ?
Five diameter bends
Ten diameter bends
Three diameter bends
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Q 5/30
Test Progress : 16.67%
Q. 6/30: ow often should above-grade visual surveillance of a buried pipeline right-of-way be made ?
Once a month
Approximately 6 month intervals
Once a year
Once every 3 months
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Q 6/30
Test Progress : 20.00%
Q. 7/30: How often should poorly coated pipes with inconsistent cathodic protection potentials have a pipe-to-soil potential survey made ?
Yearly
Every 2 years
Every 5 years
Every 7 years
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Q 7/30
Test Progress : 23.33%
Q. 8/30: On buried piping, what is the frequency of pipe coating holiday surveys ?
The frequency is governed by the leak test interval of the pipe
It is usually based on indications that other forms of corrosion control are ineffective.
Surveys are normally made every 5 years
Pipe coating holiday surveys are made when the pipe is excavated.
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Q 8/30
Test Progress : 26.67%
Q. 9/30: For a piping buried in lengths greater than __________ feet and not cathodically protected, evaluation of soil corrosivity should be performed at 5-year intervals.
50
75
100
150
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Q 9/30
Test Progress : 30.00%
Q. 10/30: If buried piping is cathodically protected, the system should be monitored at intervals in accordance with Section 10 of NACE RP0169 or Section 90 of API RP 651. API RP 651 specifies __________ interval.
annual
biannual
biennial
trennial
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Q 10/30
Test Progress : 33.33%
Q. 11/30: Buried piping inspected periodically by excavation shall be inspected in lengths of __________ feet at one or more locations judged to be most susceptible to corrosion
2 to 4
4 to 6
6 to 8
8 to 10
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Q 11/30
Test Progress : 36.67%
Q. 12/30: After excavation of buried piping, if inspection reveals damaged coating or corroded piping :
the condition should be noted in the records and the inspection interval shortened
the complete piping system must be day-lighted (excavated) for repair or replacement.
the damaged coating or corroded piping must be repaired or replaced
additional piping shall be excavated until the extent of the condition is identified.
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Q 12/30
Test Progress : 40.00%
Q. 13/30: If buried piping is contained inside a casing pipe, the casing should be :-
capable of carrying the same pressure as the product pipe
checked to see if its protective coating is intact and serviceable
pressure tested to make sure it is serviceable
inspected to determine if water and / or soil has entered the casing
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Q 13/30
Test Progress : 43.33%
Q. 14/30: An alternative or supplement to inspection of buried piping is leak testing with liquid at a pressure at least __________ % greater than the maximum operating pressure at intervals ½ the length of those shown in Table 9-1 of API 570 for piping NOT cathod
5
10
25
50
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Q 14/30
Test Progress : 46.67%
Q. 15/30: The leak test for buried piping should be for a period of __________ hours.
4
8
12
24
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Q 15/30
Test Progress : 50.00%
Q. 16/30: The leak test for a 8" diameter buried piping system is 300 psi. After 7 hours, the pressure reacts 273 psi. What should the inspector do ?
Nothing is required. The loss of pressure is negligible and will not affect the test. The loss can be disregarded.
The system should be re-pressurised to the original leak test pressure and the test should begin again.
The test charts and the temperature should be reviewed to determine if any change in temperature
The piping should be visually inspected externally and / or inspected internally to find the leak and assess the extent of corrosion.
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Q 16/30
Test Progress : 53.33%
Q. 17/30: A buried piping system that is not cathodically protected has to have an inspection interval set. The soil resistivity is checked and found to be 3400 ohm/cm. As the inspector, what interval would you set ?
2.5 years
7.5 years
5 years
10 years
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Q 17/30
Test Progress : 56.67%
Q. 18/30: Buried piping also may be surveyed for integrity by removing the line from service and performing a leak test. This inspection method typically involves pressurising the line with a __________, allowing time for the __________ to diffuse to the surface an
tracer gas (such as helium or sulphur hexafluoride)
light hydrocarbon (such as butane)
smoke type material (such as chemical smoke)
water vapour (such as steam)
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Q 18/30
Test Progress : 60.00%
Q. 19/30: Repairs to coating on buried piping may be tested using
a low-voltage holiday detector
light taps with an inspection hammer
a flaw indicator fluid
a high-voltage holiday detector
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Q 19/30
Test Progress : 63.33%
Q. 20/30: If buried piping leaks are clamped and reburied :-
no further action is required unless the piping leaks again
the date of installation shall be marked on the clamp for future identification
a record of the location and the date of installation shall be maintained
the clamped line shall be leak tested.
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Q 20/30
Test Progress : 66.67%
Q. 21/30: A 10" diameter piping system with 4" diameter and 6" diameter reinforced branch connections is to have changes made to it. Which of the following is considered an alteration ?
A new 1" diameter un-reinforced nipple is installed
A new 8" diameter reinforced branch connection is installed
A new 4" diameter reinforced branch connection is installed
A new 3" diameter reinforced branch connection is installed
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Q 21/30
Test Progress : 70.00%
Q. 22/30: Which of the following would not be classified as an applicable code to which a piping system was built ?
ASME B31.3
ASME B31.1
ASA B31.1-1955, Section 3
ASTM A-20
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Q 22/30
Test Progress : 73.33%
Q. 23/30: Which of the inspection agencies listed below is NOT an Authorised Inspection Agency as defined in API 570.
Jurisdictional inspection organisation
Owner-user inspection organisation
ASTM inspection organisation
Independent inspection organisation
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Q 23/30
Test Progress : 76.67%
Q. 24/30: An authorised piping inspector is an employee of an authorised inspection agency who is qualified to perform the functions specified in API 570. Which individual listed below is not usually an authorised piping inspector.
An owner-user inspector.
A jurisdictional inspector
An NDE examiner
An insurance inspector
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Q 24/30
Test Progress : 80.00%
Q. 25/30: Which of the following qualifies as auxiliary piping ?
control valve manifolds
bypass lines around exchangers
pump seal oil lines
orifice runs
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Q 25/30
Test Progress : 83.33%
Q. 26/30: CUI stands for :-
control unit inspector
corrosion under insulation
corrected unobtrusive inserts
corroded underground installation
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Q 26/30
Test Progress : 86.67%
Q. 27/30: Deadlegs legs of a piping system are :-
the upstream piping of control valve manifolds
supports attached to a pipeline that has no product in them
the upstream part of an orifice runs
sections that normally have no significant flow
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Q 27/30
Test Progress : 90.00%
Q. 28/30: A defect is an imperfection of a type or magnitude exceeding the __________ criteria.
non-specific
imprecise
general
acceptable
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Q 28/30
Test Progress : 93.33%
Q. 29/30: The design temperature of a piping system component is the temperature at which, under the coincident pressure, the __________ is required.
smallest thickness or highest component rating
greatest thickness or highest component rating
maximum thickness or lowest component rating
minimum thickness or minimum component rating
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Q 29/30
Test Progress : 96.67%
Q. 30/30: An examiner is a person who __________ the inspector
supplants
assists
supervises
directs
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Q 30/30
Test Progress : 100.00%
Q. 31/30: Hold point is a point in the repair or alteration process beyond which work may not proceed until the __________ has been performed and documented
PWHT required
required inspection
RT required
ultrasonic testing
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Q 31/30
Test Progress : 103.33%
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