API 510 Spot Question

 

API 510 Spot Question – January 2015 1)  Welded repair made is made to stainless steel cladding. The vessel base material is carbon steel. The completed weld repair should be examined using : A)Radiograhpy

B)Penetrant C)Penetrant and Ultrasonic D)Magnetic Particle and Penetrant. 2)  What is minimum temperature for Dye Penetrant?

A)  40°F 5°C) nor above 125 °F 52°C) ASME V T-652 B)  20°F 5°C) nor above 125 °F 52°C C)  125°F 52°C

D)  64°F 5°C) nor above 125 °F 52°C  3)  A hydrotest is conducted on an austenitic stainless steel vessel.What is the maximum allowed content chloride in the hydrotest water? A)  10ppm

B)  50ppm C)  100ppm D)  150ppm 4)  Which of the following materials is most prone to temper embrittlement? A)  Carbon Steel

B)  Low Carbon Steel C)  Stainless Steel D)  High Nikel Alloys 5)  What is P53 material?

A)  Titanium  Titanium  B)  Alloy C)  Carbon D)  Stainless Steel 6)  Hydrotest is performed on existing vessel with 1.125 thickness. What is the shell temperature Allowed during the test MDMT Plus:-

A)  10 MDMT B)  50 MDMT C)  30 MDMT D)  120MDMT

 

7)  Brittle fracture usually have occurred :

A)  During startup and shutdown B)  In vessel made with thinner materials C)  In stainless steel vessel

8)  Defect mean :

A)  exceeds the applicable acceptance criteria B)  Flaws or other discontinuities noted during inspection that may or may not exceed the applicable acceptance 9)  What is maximum temperature UT FLAW calibration?

A)  150F B)  65F C)  120F D)  150C 10)  CUI typically serve in what range of temperature? A)  10-350F B)  25-350F C)  212-350F D)  140-400F 11)  Alternating Current Field Measurement Measurement used to:A)  To detect subsurface breaking defect B)  To measure depth defect C)  To measure subsurface breaking defect

D)  To detect surface surface braking defect in range of different different material. 12  What is mechanical damage fatigue appear:A)  Surface notch

B)  Beach Mark C)  Crystalline mark 13  Jurisdictions required some some weld repair organization approved :A)U Stamp B) S Stamp C) VR Stamp

D) R Stamp 14  The maximum offset for ¾ inch thick Category A weld joint that is being repaired is: A)  1/16

B)  1/8 C)  3/8 D)  ¼

 

15  A vessel undergoing an API 510 internal inspection has corroded area whose minimum average remaining life thickness is 0.90 0. 90 inch. The required minimum thickness of the vessel for anticipated service is 1.00 inch.The nominal thickness thickness of the vessel is 1.30 inches and there is no evidence evidence of corrosion thinning ,cracking elsewhere in the vessel. The corrosion rate itn the damaged area is estimated to be 0.01 inch per year.The owner /user desire to keep the vessel in service for 10 1 0 years before the next required requi red inspection . Which statement is most appropriate?

A)  The local thin area must be restored to a nominal metal thickness of 1.10inch B)  The local thin area must be restored to a nominal metal thickness of 1.20inch C)  The local thin area must be restored to a nominal metal thickness of 1.30inch D)  API 510 does not permit restoration of corroded area whose remaining thickness is less than the required minimum thickness 16  The springs in pressure relief valves typically fail due:A)  Tensile overload B)  Creep C)  Erosion

D)  Corrosion 17  A minimal number of corrosion monitoring location ( CML) is acceptable if:A)  The vessel is due to be replaced shortly B)  Internal rather than on stream inspection are scheduled C)  The vessel surface is not easily accessible because it is insulated

D)  The established corrosion rate is low and not localized 18  During the visual inspection of an ellipsoidal head on 8-foot ID pressure vessel, an isolated corroded area was located 2.5 feet from the centre of the head. G Governing overning thickness would be determine by using the code formula for:-

A)  Spherical shell B)  Cylinder under internal pressure C)  The knuckle region of an ellipsoidal head D)  An ellipsoidal head 19  What is minimum density of gamma ray? A)  1.8

B)  2.0 C)  2.5 D)  4.0 20  Viewing facilities shall provide subdued background lighting of an intensity? A)  Light B)  Dark C)  essential IQI hole or designated wire to be visible D)  Specified range of density

 

21  What is Iridium 192 threshold minimum thickness? thickness? A)  0.35inch B)  0.25Inch ( 6.3mm) C)  0.45inch D)  0.65inch