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API 570 Closed Book Test – Questions & Verified Answers
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API 570 Closed Book Test – Questions & VerifiedAnswers
When preparing to inspect a piping system inspection personnel should?
Right Ans - Briefly review the history of the individual piping system before
any of the inspections required by API 570. API 570 5.3.5
As regards dead legs in piping circuits, what is recommended to be done by
API 570 whenever possible? Right Ans - Consideration should be given to
removing dead legs that serve no further purpose. API 570 5.3.2
When is it necessary to reevaluate the frequency of inspection for an existing
piping system? Right Ans - The inspection interval must be reviewed and
adjusted as necessary after each inspection or significant change in operating
conditions. API 570 6.3
What is the 4th consideration when selecting TML's? Right Ans - TML's at
intermediate locations along the longer straight piping within the injection
point circuit may be required. API 570 5.3.1
When the inspector suspects or is advised that specific circuits may be
susceptible to environmental cracking; the inspector should schedule
supplemental inspections. What types of inspections may this include?
Right Ans - Radiography, Wet Fluorescent Magnetic Particle, and/or
Ultrasonic Examinations. API 570 5.3.7
Supplemental inspection for piping systems is sometimes
required. Which of the following may be considered supplements to normal
inspection techniques? Right Ans - Periodic use of Radiography and/or
Thermography to check for fouling or internal plugging.
To what inspection requirements must be applied to small bore class 1
secondary piping? Right Ans - Class 1 secondary SBP shall be inspected to
the same requirements as primary process piping. API 570 6.6.1
,When is API 570 inspection code not permitted to be applied to a piping
system? Right Ans - As a substitute for the original construction
requirements or if in conflict with regulatory requirements. API 570 1.1.3
Which of the following service fluids will justify rating a piping system class 2?
Right Ans - Hydrogen, Fuel Gas, and Natural Gas. API 570 6.2.2
Prior to hydrostatic tesing of piping system containing expansion joints it is
determined that the expansion joint will be damaged and cannot be isolated.
What can be done per API 570? Right Ans - Lines containing expansion
joints may be tested at a reduced pressure. API 570 5
Corrosion products have built up around a piping system's supports, what
additional inspection work may be called for? Right Ans - Lifting the pipe
off of such supports may be required for inspection. API 570 5.4.3
Inspection for piping weld quality is normally accomplished as a part of the
requirements for new construction, repairs, or alterations. However, welds
are often inspected for corrosion as part of a radiographic profile inspection
or as part of internal inspection. When preferential corrosion in noted what is
the appropriate action? Right Ans - Additional welds in the same circuit or
system should be examined for corrosion. API 570 5.10
After an external visual CUI inspection on a class 1 system found to have
insulation damage, the follow up examinations should include NDE testing and
insulation removal of; Right Ans - At least 75% of all damaged areas. API
570 6.4 Table 6-2
The selection of TML's within injection point circuits are established at (4)
basic locations, (3) of which are: 1-TML's on appropriate fittings within the
injection circuit. 2-TML's on the pipe wall at the location of expected pipe wall
impingement of injected fluid. 3-Establish TML's at both the upstream and
downstream limits of the injection point circuit.
What is the 4th consideration when selecting TML's? Right Ans - TML's at
intermediate locations along the longer straight piping within the injection
point circuit may be required. API 570 5.3.1
,The following can be said about inspection of refractory linings used in piping
systems; system. API 570 5.3.8 Right Ans - it is usually not necessary to
remove them for inspection of the piping
What physical sign does not indicate leakage in buried piping? Right Ans -
Corrosion on the 1st flange above the ground. API 570 9.1.1
The inspector shall approve all repair and alteration work at the designated
hold points and after the repairs and alterations have been satisfactorily
completed in accordance with the requirements of; Right Ans - API 570.
API 570 8.1.2
A close- interval potential survey on a cathode protected line may be used to
verify that the buried piping; Right Ans - has good insulation from the
surrounding earth and a protective potential throughout it length. API 570
9.2.2
What are the requirements of materials to be used in the welded repair of a
piping system? Right Ans - The materials used in making repairs or
alterations shall be of known weldable quality, shall conform to the applicable
code, and shall be compatible with the original material. API 570 8.2.4
When performing welding on piping systems constructed to ASME B31.3,
What must always be in place prior to welding? Right Ans - Qualified
welding procedures, welders may be tested on production welds in many
cases. B31.3 328.2.1
In some instances preheating to 300°F may be substituted for PWHT after
welding P No. 1 materials, for which P No. 3 materials this is not allowed?
Right Ans - Materials classified as Mn-Mo. API 570 8.2.2.1
A welder makes a performance test using a pipe coupon that has an O.D. of
2.375". What range of outside diameters is he qualified to weld in production?
Right Ans - 1" to unlimited diameter. IX QW-452.3
A welders performance test was made in the 3G position. Which of the
following describes his test? Right Ans - Vertical groove weld in plate. IX
QW-461.3
, Per B31.3 may consumable inserts be used for backing piping weld grooves?
Right Ans - Yes, provided the insert is of the same nominal composition as the
filler metal. B31.3 328.3.3
When selecting the thickness measurement location (TML's) for piping, what
should the inspector take into account? Right Ans - Patterns of corrosion
experienced in other process units in the same or similar service. API 570
5.5.3
What must the owner/user determine when substituting alloy materials for
carbon steel in a piping system?material. API 578 1.2 Right Ans - The
effects the process stream might have on the alloy
An external inspection of a piping system revealed sever piping movement
had taken place. Your 1st action to correct the situation should be; Right
Ans - Consult with a piping engineer about the need for a piping stress
analysis. API 570 7.5
When should material verification test be performed? Right Ans -
Verification should be performed at the point in time that assures proper alloy
materials have been used. API 578 4.2.3
Prior to a scheduled piping inspection previous inspection records should be
reviewed. The reason for the review is so; Right Ans - A schedule can be
made to determine the inspection force requirements, to locate areas reaching
retirement thickness, and predict repairs or replacements. API 574 12.5
Defects in protective coatings and the waterproof coating of insulation will
permit moisture to come into contact with the piping. To inspect for CUI,
sections of the insulation should be removed from; Right Ans - Small
connections, such as bleed lines and gauge connections. API 574 10.1.1.5
Threaded joints are usually limited to piping in non-critical service that had a
nominal size of; Right Ans - 2" or smaller. API 574 4.5.2
As regards markings on fittings used in piping systems, what must always be
present? Right Ans - Manufactures name or trademark. B16.5 4.2.1
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