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API 570 Pre-course Study Guide questions and answers graded A+ 2024/2025
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API 570 Pre-course Study Guide questions and answers graded A+ 2024/2025
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API 570 Pre-course Study GuideAPI 570 covers inspection, repair, alteration, and re-rating procedures for what type of piping
systems? - ANSMetallic and fiberglass reinforced plastic piping systems that have been in
service
Is the use of API 570 limited only to piping systems used in the petroleum and chemical
process industries? - ANSNo
Which of the following is an optional fluid service to which API 570 may be applied? -
ANSCategory D fluid services
Are all fluid services and classes of piping systems, located within the boundaries of a
refinery or chemical plant, subject to the requirements of API 570? - ANSNo, certain fluid
services are optional such as hazardous fluids below the threshold limits, water, steam,
condensate, boiler feed water, and Category D fluid services.
Which of the following applications is optional for inclusion in API 570? - ANSFirewater
piping
The owner user organization must develop a quality assurance manual or written procedure
which shall contain all but which of the following? - ANSExternal auditing requirements for
the Quality Control system for pressure relieving devices
Who has overall responsibility for compliance with API 570? - ANSThe owner user of the
piping system
Who is responsible to the owner for activities involving design, engineering review, rating,
analysis, and evaluation of piping systems? - ANSThe piping engineer
The repair organization is responsible for providing materials, equipment, quality control, and
workmanship to meet the requirements of ASME B 31.3 - ANSFalse- API 570 not B 31.3
The API 570 inspector is responsible to the owner user for determining that all but which of
the following requirements are met? - ANSOperation
Personnel not designated as inspectors, piping engineers, or repair organizations are
responsible for notifying the inspector or piping engineer of any unusual conditions and
providing other assistance where appropriate. - ANSTrue
In developing an inspection plan, a corrosion specialist should be consulted when piping
systems operate at elevated temperatures and for systems that operate below; - ANSThe
ductile to brittle transition temperature
The inspection plan shall be developed by: - ANSThe inspector and or engineer
,The inspection plan is developed from the analysis of several sources of data. Systems shall
be evaluated based on present or possible types of damage mechanisms. The methods and
extent of NDE shall be evaluated to assure they can - ANSIdentify the damage mechanism
and the severity of damage
Inspection plans shall be reviewed and amended - ANSAs needed
Which of the following is not listed as a minimum content of an inspection plan? - ANSThe
length of time the system will be out of service
Identifying the evaluating potential damage mechanisms, current equipment condition, and
the effectiveness of past inspections are; - ANSImportant steps in assessing the probability
of piping failure
The RBI probability assessment shall be in accordance with: - ANSAPI 580
The consequence of a release is dependent upon: - ANSThe type and amount of process
fluid contained in the equipment
Documentation of RBI assessments is essential to clearly define all of the factors
contributing to: - ANSThe probability and consequence of failure
When RBI assessments are used to set equipment inspection intervals, the assessment
shall be updated - ANSAfter each inspection as defined in API 580
The owner user is preparing a piping system for internal and some external inspections,
which of the following is not listed as part of the safety practices? - ANSIdentifying the
remaining piping systems
Before starting an inspection what should inspection personnel do? - ANSObtain permission
to work in the vicinity from operating personnel
You are preparing to conduct an inspection of an in-service piping system. What specific
function should you perform? - ANSYou should familiarize yourself with the previous
inspection results
Chloride stress corrosion cracking, fatigue, caustic stress corrosion cracking, and sulfide
stress cracking are examples of which of the following typical piping damage types and
mechanisms? - ANSSurface connected cracking
Why are injection points of particular concern with regard to inspection activity? -
ANSInjection points are sometimes subject to accelerated or localized corrosion from normal
or abnormal operating conditions
What is the recommended minimum upstream limit of an injection point circuit? - ANSTwelve
inches or three pipe diameters, whichever is greater
,What is the recommended downstream limit of an injection point circuit? - ANSSecond
change in flow direction past the injection point or 25 feet beyond the first change in flow
direction, whichever is less
Which of the following is not one of the recommended guidelines used in establishing
thickness measurement locations (TMLs) within an injection point circuit? - ANSAppropriate
locations on the connected vessels
When taking thickness measurements, at injection points, what are the preferred methods of
obtaining these measurements? - ANSRadiography and or ultrasonic
Periodically, inspections of an injection point circuit should include more extensive
inspection. What are the recommended limits of this extended inspection? - ANSBeginning
12 inches upstream of the injection nozzle and continuing for at least ten pipe diameters
downstream of the injection point
During the external inspection of a piping system, you notice corrosion build up at a pipe
support contact point. What action may be necessary? - ANSLifting the pipe off the support
may be necessary for thorough inspection
Bellows expansion joints should be inspected visually for? - ANSUnusual deformations,
misalignment, excessive angular rotation, and displacements that may exceed design.
During piping and line movement surveillance inspections, branch connections should
receive special attention. - ANSTrue
Condition Monitoring Locations (CMLs) should be selected based on what two main
considerations? - ANSThe potential for localized corrosion and service specific corrosion
May CMLs be reduced or eliminated once they have been established? - ANSYes
substantial reductions should include consultation with a corrosion specialist
The thinnest reading or an average of several readings in the test point shall be recorded
and used to calculate corrosion rates, remaining life, and inspections schedules. - ANSTrue
When taking thickness readings on pipe, where should they be taken? - ANSThickness
measurements should include each of the four quadrants on the pipe and fittings, with
special attention to the inside and outside radius of elbows and tees
CMLs should be marked on inspection drawings but not on the piping system. - ANSFalse
A complex piping system containing fittings, branches, deadlegs, injection points, and other
similar items would cause you to do which of the following? - ANSAssign more CMLs
Piping systems may require fewer CMLs provided that all but which of the following
characteristics are present? - ANSHigher potential for CUI
, CMLs may be eliminated entirely for piping systems when what condition(s) exist? -
ANSEnvironmental emergency is extremely low, Non corrosive systems, as demonstrated by
history or similar service; and systems not subject to changes that could cause corrosion as
demonstrated by history and or periodic reviews
What nondestructive method is the most accurate means for obtaining thickness
measurements on installed pipe larger than NPS 1? - ANSUltrasonic
What technique is preferred for determining areas to be measured for pipe diameters smaller
than NPS 1? - ANSRadiographic profile
When corrosion in a piping system is non uniform or the remaining thickness is approaching
retirement thickness, what are the preferred thickness measurements methods to be
employed in this case? - ANSRadiography or Ultrasonic scanning
Ultrasonic measurements taken above_____ °F require the use of instruments, couplants,
and procedures that will result in accurate measurements at the higher temperature. -
ANS150°F
The accuracy of ultrasonic measurements can be influenced by many factors. Which of the
following factors should not affect the accuracy of ultrasonic measurements? -
ANSThickness between 1/8 and 1/4"
Pressure test are not normally conducted as part of a routine inspection. Exceptions to this
include: - ANSRequirements of the coast guard for over water piping and requirements of
local jurisdictions, after welded alterations, buried piping or when specified by the inspector
or piping engineer.
If a pressure test is called for, by the inspector, piping engineer, jurisdictional authority, or for
over-water piping, what requirements must be adhered to? - ANSThe requirements of ASME
B31.3
The test fluid should be water unless: - ANSThere is the possibility of damage due to
freezing or other adverse effects of water on the piping system or the process(e.g process
incompatibility with water) or unless the test water will become contaminated and its disposal
will present environmental problems.
Flammable liquid may be used to conduct the pressure test provided the flash point of the
liquid is at least _____°F (____°C) or greater/ - ANS120°F (49°C)
Piping fabricated of 300 series stainless steel, or containing components of this material,
should be hydro tested with a solution made up of potable water, de-ionized-mineralized
water, or steam condensate. If potable water is not available, or drying is not possible, then
water having a very low chloride level and which of the following may be considered to
reduce the risk of pitting and microbiologically induced corrosion? - ANSWater with a pH
greater than 10 and inhibitor
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