API 570 Question Bank (API 570 QB001)

Today's questions here.......

66) If a lower pressure test (lower than prescribed by code) is used only for tightness of piping systems, the __________ may designate the pressure

a) Owner-user

b) Inspector

c) Jurisdiction

d) Contractor

67) The preferred medium for a pressure test is __________:

a) Steam

b) Air

c) Water

d)  Hydrocarbon

68) If a non-toxic hydrocarbon (flammable) is used as the test medium, the liquid flash point shall be at least __________ °F or greater.

a) 95

b) 100

c) 110

d) 120

69) Piping fabricated of or having components of 300 series stainless steel should be tested with __________.

a) Water with a pH of 4

b) Water with a pH of 6

c) Water with a chloride content of less than 400 ppm chlorides

d) Steam condensates

70) For sensitised austenitic stainless steel, piping subject to polythionic stress corrosion cracking, consideration should be given to using __________ for pressure testing

a) An acidic-water solution

b) An alkaline-water solution

c) A water with a pH of 5

d) A water with a pH of 4

71) When a pipe requires post weld heat treatment, when should the pressure test be performed?

a) During heat treatment

b) Before any heat treatment

c) After any heat treatment

d) No test is required

72) During a pressure test, where test pressure will exceed the set pressure of the safety relieve valve or valves on a piping system, the safety relief valve or valves should be __________ when carrying out the test.

a) Altered by screwing down the adjusting screw

b) Reset to exceed the test pressure

c) Checked or tested

d) Removed or blanked

73) When using block valves to isolate a piping system for pressure test, what precaution should be taken?

a) Do not use a globe valve during a test

b) Make sure the packing gland of the valve is tight

c) Do not exceed the permissible seat pressure of the valve

d) Check the bonnet bolts to make sure they are tight

74) Several methods may be used to verify that the correct alloy piping is in a system. Pick the incorrect method from the list below:

a) Holography

b) Optical spectrographic analyser

c) X-ray fluorescent analyser

d) Chemical spot checking

75) Name a part of a piping system that thickness measurements are not normally routinely taken.

a) Elbows

b) Expansion loops

c) Tees

d) Valves

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