c. Determine if data scatter is greater than required for statistical analysis.d. See which results in the shortest remaining life of the piping system.Answer: API 570 Sec.7.1.1Question 26: The difference between long-term and short-term corrosion rate calculations is that:a. The long-term corrosion rate results in a more accurate remaining life.b. The short-term corrosion rate uses "T previous" in the calculationc. The long-term corrosion rate uses "T minimum" in calculating remaining life.d. The short-term corrosion rate results in a more accurate remaining life.Answer: API 570 Sec. 7.1.1Question 27: The requirement for specifying industry-qualified Shear Wave examiners went into effect in:a. 2003b. 2005c. 2004d. 2002Answer: API 570 Sec. 5.10 Last paragraph—2001+2 yrs.= 2003Question 28: API 570 inspection code recognizes what concepts for evaluation of degradation of piping?a. Fitness-for-serviceb. Corrosion rate measurements.c. ASME B31.3 process piping code.d. Risk-based inspection.Answer: API 570 Sec. 1.3
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Question 29: What is the long-term corrosion rate of a carbon steel piping system that was installed in 1983 with a nominal thickness of 0.395" (10 mm)? Before it was started up the measured thickness was 0.375" (9.5 mm). The previous measurement in 1993 was 0.295" (7.5 mm) and the last measurement was 0.255" (6.5 mm) in 2003.a. 12 MPY 3.010 in/yr (0.30 mm/yr)b. 4 MPY 0.008 in/yr (0.10 mm/yr)c. 6 MPY 0.006 in/yr (0.15 mm/yr)d. 2 MPY 0.007 in/yr (0.05 mm/yr)Answer: API 570 Sec. 7.1Question 30: What is the remaining life of a piping system with a short-term corrosion rate of 0.010 in/yr (0.25 mm/yr) and a long-term corrosion rate of 0.005 in/yr (0.13 mm/yr)? A minimum required thickness of 0.150" (3.8 mm), a remaining thickness of 0.210" (5.3 mm), and an original thickness of 0.270" (6.8 mm).a. 12 years.b. 24 years.c. 3 years.d. 6 years.Answer: API 570 Sec. 7.1Question 31: PMI Test procedures should cover:a. Qualification requrements for PMI personnel.b. Basis for action for resolving non-conformance.c. Percentage of sampling tests required.d. Test instrument ID or serial number.Answer: API 578 Sec. 5.5Question 32:Certified Mill Test reports are:a. Required for all piping components in hazardous services.b. Acceptable as a substitute for positive material identification.c. Shall be part of the required documentation for all new alloy piping systems.d. An important part of an overall material QA programAnswer: API 578 Sec. 4.2.4Question 33:Positive material identification (PMI) of a piping component is:a. A check of the mill certificates to confirm that a material has been correctly received.b. A documented quality assurance procedure to verify that there has been no inadvertent material substitutions.c. A check of the material stamping to confirm that the right material has been installed.
d. Any physical test of a material to confirm that it is consistent with the alloy specification.
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