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API 570 Closed Book Exam B questions and answers graded A+ 2024/2025
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API 570 Closed Book Exam B questions and answers graded A+ 2024/2025
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API 570 Closed Book Exam B65- An existing hydrocarbon line is being pressure tested at 300 psig. Which of the following
test mediums should not be used? - ANSD. air
66- Pressure tests should be conducted: - ANSA. after PWHT
67- Which is the corrosion rate for the described CML?
Reading 1: 0.331 6/1992
Reading 2: 0.320" 6/1998
Reading 3: 0.292" 6/2005
retirement thickness: 0.120" - ANSC. 0.004 ipy
68-What does the letters "F" on an RT indicate? - ANSC. penetrameter was placed on the
film outside
69- fatique cracks may be difficult to find since: - ANSD. the time period between crack
inititation and failure is short
70 What is the minimum # of RT exposures required to RT a new 2 NPS weld? (no access to
the inside) - ANSB. 2
71- When using a hole-type IQI on a radiograph, what hole size must be seen on the
radiograph? - ANSB. 2T
72- During inspection of an injection point circuit, extensive inspection should be conducted
downstream of the injection point for a distance at least: - ANSD. 10 pipe diameters
73- Insulated austenic stainless steel pipe is susceptible to CUI (chloride stress corrosion
cracking) at: - ANSD. 120-400 degrees F
74- Tack welds should be: - ANSA. made by a qualified welder or welding operator
75- Which of the following is not a factor contributing to creep? - ANSA. Line size
76- The minimum and maximum density range in the area of interest on a radiograph using
a gamma ray source is: - ANSC. 2.0- 4.0
77- Which of the following is not a major contributor to fatigue cracking? - ANSD. the number
of ph changes
78- According to API 570, internal inspection of large pipe: - ANSB. when done, should be
conducted similar to API 510 internal inspections.
, 79-Which of the following is not an acceptable way to qualify a welder? - ANSB. tension
tests of a coupin
80- during the external inspection, spring hangers should be checked to ensure that the: -
ANSB spring is not bottomed out
81- According to API 570: - ANSD. thickness measurements should be taken at the 4 pipe
quadrants
82- During a piping repair, who is specifically responsible for quality control? - ANSD. repair
organization
83- If a hydrostatic pressure test is maintained for lengthy period of time: - ANSC.
precautions shall be taken to avoid excessive pressure
84- According to API 570, who should conduct the external inspection? - ANSC. the
authorized inspector or qualified operation or maintenance personnel
85- What NDE technique is useful for finding plugging in piping? - ANSC. RT
86- Marking pens used to make piping components should not contain: - ANSD. Sulfur
87-Which of the following is not an important step when performing a hydrotest on a 300
series stainless steel? - ANSB. raise pressure in small pressure steps
88- Per API 570, during repairs and alterations. the inspector shall verify that the new
materials being used are correct. What is the minimum amount of verification that the
inspector shall perform? - ANSC. a sampling of all alloy piping
89- During weld quality radiography, when possible IQI's should be placed on the: - ANSB.
Source side
90- Which valve type generally tends to create the most turbulence in the fluid flow? - ANSD.
globe valve
91- during an in-service inspection, an old fabrication imperfection was discovered in a weld.
this imperfection must be: - ANSD. evaluated by an engineer or inspector
92- What is the hardness limits for pipe made from 9%Cr- 1% Mo? - ANSC. 241 Brinnel
93- A locally thinned area on a pipe: - ANSA. may be evaluated using API 579
94- In which of the following activies must the name of the individual performing the activity
be permanently recorded in piping records? - ANSC. taking the thickness reading at the
CML's
95- Prior to perfroming a pipe repair the work must be authorized by the: - ANSA. authorized
inspector
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