26-2-2018 Closed and Open Book Exam: 1-Included Fluid Services
26-2-2018 Closed and Open Book Exam: 1-Included Fluid Services
26-2-2018 Closed and Open Book Exam: 1-Included Fluid Services
3- deadlegs
Components of a piping system that normally have little or no significant
flow. Some examples include blanked
(blinded) branches, lines with normally closed block valves, lines with one
end blanked, pressurized dummy support
legs, stagnant control valve bypass piping, spare pump piping, level bridles,
pressure relieving device inlet and outlet
header piping, pump trim bypass lines, high-point vents, sample points,
drains, bleeders, and instrument connections.
Deadlegs also include piping that is no longer in use but still connected to
the process.
4- defect
An imperfection of a type or magnitude exceeding the acceptance criteria.
8- quality assurance
All planned, systematic, and preventative actions required to determine if
materials, equipment, or services will meet
specified requirements so that the piping will perform satisfactorily in-
service. Quality assurance plans will specify the
necessary quality control activities and examinations.
NOTE The contents of a quality assurance inspection management system
for piping systems are outlined in 4.3.1.
3.1.86
9- quality control
Those physical activities that are conducted to check conformance with
specifications in accordance with the quality
assurance plan (e.g. NDE techniques, hold point inspections, material
verifications, checking certification documents,
etc.).
9- testing
Procedures used to determine pressure tightness, material hardness,
strength, and notch toughness.
EXAMPLE Example: Pressure testing, whether performed hydrostatically,
pneumatically, or a combination of hydrostatic/
pneumatic or mechanical testing.
NOTE Testing does not refer to NDE using techniques such as PT, MT,
etc.
10- Fewer CMLs can be selected for piping systems with any of the
following three characteristics: long, straight-run piping systems.
11- The type of surface preparation required depends on the
individual circumstances and NDE technique, but surface preparations
such as wire brushing, blasting, chipping,
grinding, or a combination of these preparations may be required.
14- If the liquid is flammable, its flash point shall be at least 120 °F
(49 °C) or greater
The principles of ASME B31.3 or the code to which the piping system was
built shall be followed to the extent
practical for in-service repairs.
21- patches may be any shape but shall have rounded corners [1
in. (25 mm) minimum radius].
See ASME PCC-2 Part 2 for more information on various welded repairs to
piping systems.
26-
the line repressurized to original test pressure and isolated from the
pressure source. If, during the
remainder of the test period, the pressure decreases more than 5 %, the
piping should be visually inspected
externally and/or inspected internally to find the leak and assess the extent
of corrosion. Sonic measurements may be
helpful in locating leaks during leak testing.
1. Temporary piping repairs may remain for an indefinite period of time if they are
approved and documented by the:
B) Manager of Maintenance
C) Operations Manager
D) Piping Engineer
Answer: D … API 570, Para. 8.1.4.1, last sentence in Paragraph, API 570 Pg 52!
5. TML readings on a piping system indicate that a corrosion rate has increased.
The Inspector’s most appropriate response is to:
Answer: A … API 570, Para. 7.1.1, Last Para. LT & ST corrosion rates should be
compared to see which results in shortest RL as part of the data assessment!
08. To which of the following fluid services does API 570 specifically apply?
A) Category D fluid services as defined in ASME B31.3
A) Flaw B) Defect
C) Discontinuity D) Indication
A) Adjacent to the weld so that the length of the wire is perpendicular to the weld
B) Adjacent to the weld so that the length of the wire is parallel to the weld
C) On the weld so that the length of the wire is perpendicular to the weld
D) On the weld so that the length of the wire is parallel to the weld
Answer: C … API 577, Para. 9.8.2.a, ASME V, Art 2, T-277.1.d Know Hole type!
15. Measurements from inspection of Class 3 pipe reveal actual metal thickness
of 0.350 inches. Calculated minimum thickness is 0.250 inches. If the corrosion
rate is 0.0025 inches/year, the NEXT thickness measurement inspection is due in:
Answer: C … API 570, Para. 6.3.3 & Table 2 (Should state NO RBI … old question)
Solution: Use the Lesser of ½ RL or Table 2 Value for UT Class 3 (which is 10
yrs) .350 - .250 = .100 mils RL ÷ 0.0025 loss/yr = 40 yrs RL = ½ RL = 20 years
Use 10
Answer: A … API 570, Para. 5.5.4 (2nd Paragraph) External Inspection Question
26. Which inspection method is most appropriate for detecting chloride stress
corrosion cracking in austenitic stainless-steel piping systems?
C) Liquid Penetrant
D) Radiography
Answer: D … ASME V, Art T-276 (a) & (b) … IQI reinforcement rule (Table T-276)
30. Evaluation of the record of the previous inspection reveals that thickness
readings and the resulting calculation were inaccurate. The corrosion rate to be
used for the next inspection period shall:
C) Not be changed to actual rate found until rate is confirmed at the next inspection
D) Be the average of the short-term and long-term corrosion rates from the record
Answer: B … API 570 Section 7.1.3, 2nd Para
1. A piping system has a design pressure/temp of 500 psig at 900°F. What is the
minimum acceptable flange class if the flange material is ASTM A-182 Gr. F22?
A) Class 300 B) Class 400
Ans: B … 2009 ASME B16.5 Table 1A Mat’l Grp 1.10 on pg 4 Table 2-1.9 (pg 118)
Use psi tables (not bar) Class 300 = Only good for 450 Class 400 = OK to 600
12. An inspection reveals that a repaired NPS 4 seamless pipe, A-53 Gr. B, has a
thickness of 0.180 inches. If the service is 1000 psig at 500°F, what is the actual
remaining corrosion allowance considering only internal pressure?
A) 0.043 inches B) 0.064 inches C) 0.070 inches D) 0.116 inches
Answer: B … Barlow calc, ASME B31.3 Table A-1 (S=19 ksi), Table A-1B (E = 1.0),
PD = 1,000 x 4.500 = 4,500 ÷ 38,000 (2SE=2x19000x1)=.118 … .180 - .118 = 0.062 in.
13. For piping systems where service conditions have been changed, if data for
the same or similar service is not available, a corrosion rate is estimated from the
experience of the owner/operator or from:
A) Published data on piping systems in comparable service
14. An NPS 12 carbon steel standard pipe in Class 2 service, designed to operate
at 450 psig and 500°F (260°C) with an allowable stress of 20 ksi, has a thickness
at inspection of 0.280 inches (7.1 mm). What is the maximum interval for the next
thickness measurement inspection (assume no RBI, E=1.0, Corr. rate = 25 MPY)?
RL = 0.280 in. (t actual) – 0.143 inches = 0.137 inches ÷ 0.025 (25 MPY) = 5.48 yrs
Use lesser of ½ RL (½ RL = 2.74 yrs) or Table 2 value 10 years (Class 2) = 2.7 yrs
3. An NPS 8 pipe operating at a maximum of 675 psi and 650°F (ASTM A106 Gr. B)
will use what stress value to determine the pipe’s minimum thickness?
Answer: C … 2010 ASME B31.3 A-1 Tables (Pg 153) Use col. 650°F = 17.3 ksi!
7. The maximum depth of undercut for a girth weld in normal fluid service having
a thickness of 0.50 inches (13 mm) is:
A) No visible undercut B) 1/64 inch (0.4 mm)
Answer: C … 2010 ASME B31.3 Table 341.3.2 (Normal Fluid Service = H = ≤ 1mm)
9. In evaluating a thinned area of piping, the allowable stress shall not be greater
than:
A) ½ of the SMYS B) 2/3 of the SMYS
Ans: C … 570, Para. 5.8 Caution Note … Know the 90% SMYS rule!
10. Which of these MAWP values is correct for a piping system designed at 380
psig at 700°F, having A53 Gr. B seamless pipe, latest UT = 0.28 inches, observed
corrosion rate = 0.005 inches per year, and the next inspection is in 4 years?
API left out diameter on this test question … Assume an 18 NPS piping system
14. The density of step wedge comparison film and densitometer calibrations
shall be verified by using calibrated step wedge film traceable to:
23. In general, the corrosion resistance of iron and nickel alloys in sulfidation
atmospheres is dependent upon the content of:
Answer: D … API 571, Par. 4.2.16.3.a.1 … Also know good design prevents MF
36. What is maximum permissible height of weld reinforcement for a girth weld in
Normal Fluid service for piping having a wall thickness of 3/8 inch (10 mm)?
A) 1/16 in (1.5 mm) B) 1/8 in (3 mm)
48. Do tensile test results shown on PQR EM2-1 meet the requirements for WPS?
A) Yes
Answer: B … ASME IX, Table QW-451.1 & QW-150 (151/152/153) & QW-422 Tables
Note: Specimens are ½ size (reduced t from 1.25 in), need 4 not 2 per Table 451.1
Note: Tensile = 55,000 per QW-422 Tables … specimen breaking in the weld metal
is OK at 55,000 … specimen breaking in base metal = Ok at 55,000 x 95% (5% rule)
and 55,000 x 0.95 = 52,250, so specimen # 3 is OK breaking at 53,000 … Specimen
# 1 that broke in the weld metal at 53,350 must be rejected for being under 55,000.
A) Acceptable
Answer: B … ASME IX, Table QW-451.1 & QW-160 Four SIDE bends required
A) Yes
B) No, it should be 3/16 inch to 1.25 inches
Answer: C … ASME IX, Table QW-451.1 Big T column for WPS qualified range
A) Yes
B) Yes, but only because the thickness range covers the entire WPS range
C) No, because the PQR does not show evidence that PWHT was performed
D) No, because the PQR does not cover the lower transformation temperature range
Answer: C … ASME IX, Table QW-253 Table (SMAW) & QW-407.1 PWHT rules
52. Does the PQR properly qualify the WPS regarding Preheat requirements?
A) Yes, the preheat on the PQR covers all ASME IX rules for WPS application
B) Yes, but only because the interpass temperature range is required for P-No 1
C) No, because PQR preheat temps were performed outside of essential variable limits
Answer: A … ASME IX, Table QW-253 Table (SMAW) & QW-406.1 Preheat rules
A) F–number B) P–number
Answer: A … API 577, Para. 7.3, 2nd Para. ASME IX, Table QW-432 (F-Nos)
33. Measurements from inspection of Class 3 pipe reveal actual metal thickness
of 0.350 inches. Calculated minimum thickness is 0.250 inches. If the corrosion
rate is 0.0025 inches/year, the NEXT thickness measurement inspection is due in:
Answer: C … API 570, Para. 6.3.3 & Table 2 (Should state NO RBI … old question)
Solution: Use the Lesser of ½ RL or Table 2 Value for UT Class 3 (which is 10
yrs) .350 - .250 = .100 mils RL ÷ 0.0025 loss/yr = 40 yrs RL = ½ RL = 20 years
Use 10
34. Which 2 positions qualify a welder for all positions when welding 8-inch pipe?
A) 2G and 5G B) 1G and 3G
C) 1G and 2G D) 2G and 3G
Ans: A … ASME IX, QW-303 sends you to TABLE QW-469.1 (MUST KNOW TABLE)
YOU MUST KNOW … “6G” RULE & “2G+5G” RULE & “24 NPS RULE PIPE/PLATE
… SO BE SURE TO HIGHLIGHT ALL CRITICAL TABLES IN ASME IX
Answer: C … API 570, Sect 2 Reference/Para. 4.3.5.2 & ASME V … MUST KNOW
A) Deadleg inspections
B) Injection point inspections
Answer: C … API 570, Para 5.5.5 & Sect 6, Table 2 & API 574, Para. 7.4.5 2 rules
A) Internal inspection
Answer: C … API 577, Section 1 Scope, 2nd Para … Selected by Inspection, etc
A) B31.3 specifications
B) Owner/user specifications
C) ASME/ANSI V specifications
64. Which of the following is NOT considered an effective means of cleaning the
surface of piping to be inspected for cracks?
A) Steamout & chemical cleaning
C) Wire brushing
D) Sandblasting
Answer: A … API 572, Section 8.2 … Last Paragraph & Section 9.3.14, 9 th Para.
A) Normally required
B) Not normally required
C) Required if deemed necessary by Examiner
D) Mandatory per API 570
Answer: A (API 570, 8.2.6 First Paragraph) … Normally required after alterations
97. Any welding conducted on piping components in operation must be done in accordance
with this document, and Inspector shall use as a minimum “Suggested Hot Tap Checklist”
contained in this document for hot tapping performed on piping components. Which of the
following documents referenced in API 570 addresses hot tapping?
A) API 2201 B) API 574 C) ASME B31.3 D) ASME PCC-2
C) CUI inspection and vibrating piping inspection and Injection point inspection
D) Infrared Thermography for Hot spots, RT for fouling/plugging, Soil/Air interface inspections
Answer: D (API 570, 5.5) These are not general types of inspection as per API 570