API 570 - Open Book - Exam Questions With Revised Correct Detailed Answers Guarantee Pass
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Course
API 570
Institution
API 570
API 570 - Open Book - Exam
Questions With Revised Correct
Detailed Answers
Guarantee Pass
1) What is the maximum allowed hydrotest pressure for piping with class 300
flanges that are made of ASTM 182 Gr. F316 Material? The Design
Temperature is 600 °F - ASME B16.5: 2.6, Tables 1.1-1 &...
API 570 - Open Book - Exam
Questions With Revised Correct
Detailed Answers
Guarantee Pass
1) What is the maximum allowed hydrotest pressure for piping with class 300
flanges that are made of ASTM 182 Gr. F316 Material? The Design
Temperature is 600 °F - ASME B16.5: 2.6, Tables 1.1-1 & 2-2.2c
1100 Psig.
2) What is the required preheat temperature for an A106 Gr. B pipe with
carbon content less than 0.2% and has a wall thickness of 0.500"? - ASME
B31.3: Table 330.1.1
50 °F
3) Atmospheric corrosion becomes less of an issue at temperatures above:
- API 571 - 3.8.3.f
250 °F
4) Which of the following is an essential variable when qualifying a welder
using the SMAW process? - ASME Sect. IX - Table QW-416 or Table QW-353
Deletion of backing
5) Which document provides information on Integrity Operating windows?
- API 570: 2
,API 584
6) Without performing impact tests, what is the minimum allowed
temperature for the following piping system?
Material: A106 Gr. C
Nominal Thickness: 0.750"
Line Size: 6 NPS
Retirement Thickness: 0.500"
ASME B31.3: Table A-1, Table 323.2.2A
+ 15 °F
7) During the design of a pipe alteration, it is determined that impact testing
of the pipe is required. The pipe material is A106 Gr. C and is considered a
fully deoxidized steel. During impact testing all three specimens should
break at or above: ASME B31.3: Table 323.3.5
12 ft-lbs.
8) CS HAZ created - base metal temp during welding is: - API 577: 10.2.4
> 1350 °F
9) 30% solution of Caustic, PWHT Recommended for CS is: - API 571: Fig 3-15-1
≥ 140 °F
10) Minimum preheat temp for 5B mtl, with SMTS = 70 KSI is: - ASME B31.3 Table
330.1.1
400 °F
11) Normal CS PWHT Temp is: - ASME B31.3: Table 331.1.1
1100 - 1200 °F
12) Sulfidation of iron-based alloys usually begins at: - API 571: 3.61.3.f
> 500 °F
, 13) What is the retirement thickness ("Tmin") for this 12 NPS Pipe?
Design Pressure: 500 psig.
Material: A106 Gr. B
Design Temperature: 700 °F
Original Corrosion allowance: 0.125"
ASME B31.3: 304.1.2, Table A-1, Table A-1B
0.189"
14) During Radiography of a weld that is 1.0" thick, what is the maximum allowed
geometric unsharpness in the radiograph? - ASME Sect. V - T-274.2
0.020"
15) An existing line is replaced with 9 Cr - 1 Mo (A426 Gr. CP9). the design
conditions: 700°F at 250 psig. The authorized inspector determines that a
hydrotest should be performed. what is the minimum required hydrotest
pressure? - ASME B31.3: 345.4.2(b), Table A-1
412 psig.
16) What is the internal for excavating and inspecting buried piping that
is Not cathodically protected and has a soil resistance of 12,000 ohm-cm? API
570: Table 4 (pg. 73)
15 years
17) A carbon steel pipe is filled with seawater flowing at 4fps (feet-per-second).
what is the expected corrosion rate from Erosion-Corrosion? API 571: Table 3-17-
1
13 mpy.
18) A pipe spool made of P-5B - Group 1 material, is fabricated and post weld heat
treated. What is an acceptable temperature range for this PWHT? ASME B31.3:
Table 331.1.1
1250-1400 °F
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