API 570 Closed book test
_______pipe joints can be of the flanged, packed, sleeve, hub-and-spigot-end or hub-
and-plain-end or bell-and-spigot-end or bell-and plain-end type. - answer-Cast iron
API 574 5.5
_______welded joints are made by inserting the end of the pipe into a recess in a
fitting or valve and then fillet welding the joint. - answer-Socket - welded joints API
574 5.3.3
A close- interval potential survey on a cathode protected line may be used to verify
that the buried piping; - answer-has good insulation from the surrounding earth and
a protective potential throughout it length. API 570 9.2.2
A combination of corrosion and erosion (Corrosion/Erosion) results in significantly
greater metal loss than can be expected from corrosion or erosion alone. - answer-
This type of corrosion often occurs; Bends, elbows, tees, reducers, downstream of
let down valves and block valves, pumps, blowers, propellers, impellers, agitators,
agitated vessels, heat exchanger tubing, measuring device orifices, turbine blades,
nozzles, ducts and vapor lines, scrapers, cutters, and wear plates. API 571 4.2.14.4
A discontinuity resulting from an arc, consisting of any localized re-melted metal,
heat affected metal, or change in the surface profile of any metal object is a
description of_________. - answer-Arc Strike API 577 3.5
A flanged joint is composed of (3) separate and independent, although inter-related
components: the flanges, the gasket, and the bolting, which are affected by yet
another influence. What is this influence? - answer-The assembler B16.5 2.2
A higher degree of PMI testing should be performed on alloy materials supplied by
a_______. - answer-Distributor API 578 4.2.7
A large number of piping failures occur at; - answer-Elbows, reducers, mixing tees,
control valves, and orifices because of increase velocity and/or turbulence. API 574
7.3.3
A liquid penetrant comparator block used to prove a high temperature technique is
best described as; - answer-An aluminum block 3/8" X 2" X 3" Sec. V Art. 6 T-653.2
A loss of ductility and notch toughness in susceptible low alloy steels, such as 1 ¼
Cr and 2 ¼ Cr, due to prolonged exposure to high temperature service [700°F -
1070°F (370°C - 575°C)]. Is defined as_________. - answer-Temper Embrittlement
570 3.34 (Temper Embrittlement is no longer in 570 or 571)
A packless valve that contains an element made of flexible material is called; -
answer-Diaphragm Valve API 574 4.3.6
,A piping system will operate from 50°F to 750°F, what must be considered during
design? - answer-Thermal Expansion and contraction. B31.3 307.1
A pressure relief device is required when performing pneumatic leak test on piping,
the PRD should be set to; - answer-50 psi or 10% above the test pressure whichever
is less. B31.3 345.5.2
A section of pipe encompassed by flanges or other connecting fittings such as
unions is the definition for? - answer-Spool API 570 3.1.88
A test point is an area defined by a circle having a diameter not greater than____for
a line diameter not exceeding 10 inches or not greater than____for larger lines. -
answer-2"-3" API 570 3.46 This is not in 570 and I could not locate it in API 574.
A variety of test methods are available to identify materials the primary methods
include; - answer-Portable X-Ray fluorescence, Portable optical emission
spectroscopy, and Laboratory chemical analysis. API 574 5.2
A welder has not welded with the SMAW process for 7 months, in order to renew his
qualification he must; - answer-Renewal of qualification expired under QW-322.1 (a)
may be made for any process by welding a single test coupon of either plate or
pipe, of any material, thickness or diameter, in any position, and testing of that
coupon as required by QW-301 and QW-302.
A welder is to make a groove weld performance test coupon in a material classified
as being P No. 21. It is to be qualified by radiography, this is permissible if he uses
what process; - answer-GTAW Sec. IX QW-304
A welder makes a performance test using a pipe coupon that has an O.D. of 2.375".
What range of outside diameters is he qualified to weld in production? - answer-1"
to unlimited diameter. IX QW-452.3
A welder makes performance test on pipe in the 1G position, How many bend test
are required to qualify his performance? - answer-(2) 1-Face bend and 1-Root bend
Sec. IX QW-302.3 Figure QW-461.4/QW-463.2 (d)(e)
A welder's radiographic examination for performance shall be deemed unacceptable
when? - answer-(1) Any type of crack or zone of incomplete fusion or penetration.
(2) Any elongated slag inclusion which has a length greater than (a) 1/8" for t up to
3/8" inclusive. (b) 1/3 t for t over 3/8" to 2 ¼" inclusive. (c) ¾" for t over 2 ¼".
(3)any group of slag inclusions in line that have an aggregate length greater than t
in a length of 12t, except when the distance between the successive imperfections
exceeds 6L where L is length of the longest imperfection in the group. (b) Rounded
Indications (1) the maximum permissible dimension for rounded indications shall be
20% of t or 1/8" whichever is smaller. (2) For welds in material less than 1/8" in
thickness, the maximum number of rounded indications shall not exceed 12 in 6"
length of weld. A proportionately fewer number of rounded indications shall be
permitted in welds less than 6" in length. (3) For welds in material 1/8" or greater in
thickness, the charts in Appendix 1 represents the maximum acceptable types of
rounded indications illustrated in typically clustered, assorted, and randomly
, dispersed configuration. Rounded indications less than 1/32" in maximum diameter
shall not be considered in the radiograph acceptance test of welders and welding
operators in these ranges of material thicknesses. Sec IX QW-191.1.2.2
A welders performance test was made in the 3G position. Which of the following
describes his test? - answer-Vertical groove weld in plate. IX QW-461.3
A welding electrode has the following marking E-7018. Explain the meaning of the
numbers; - answer-(70) 70,000 tensile strength, (1) position, (8) Coating operating
characteristics API 577 Fig. A-6
A welding operator is to be qualified by radiography using his 1st production weld,
what is the minimum length of the radiograph to be performed on his weld? -
answer-6" Sec. IX QW-305.1
A______valve consist of a tapered or cylindrical plug fitted snugly into a
correspondingly shaped seat in the valve body. - answer-Plug Valve API 574 4.3.4
Above what diameter is piping also constructed by the rolling and welding of plate?
- answer-16" API 574 4.1.1
Above what temperature are special precautions needed when taking ultrasonic
measurements? - answer-150°F API 570 5.7.1
Acceptance of a welded repair shall include; - answer-NDE of all Welds API 570 8.2.6
After an external visual CUI inspection on a class 1 system found to have insulation
damage, the follow up examinations should include NDE testing and insulation
removal of; - answer-At least 75% of all damaged areas. API 570 6.4 Table 6-2
After magnetization and magnetic particle examination of a part it shall be
demagnetized; - answer-The part shall be demagnetized any time after completion
of the examination. Sec V T-778
After welding is completed on a piping system, a pressure test in accordance with
API 570 8.2.7 shall be performed if; - answer-Practical and deemed necessary by
the inspector. API 570 8.2.7
After welding is completed on a piping system, a pressure test shall be performed; -
answer-If practical and deemed necessary by the inspector. API 570 8.2.7
An alteration is? - answer-A physical change in any component that has design
implications affecting the pressure containing capability or flexibility of a piping
system beyond the scope of its original design. API 570 3.1.2
An alternative or supplement to inspection of underground piping is leak testing
with liquid at a pressure at least; - answer-At 10% greater than maximum operating
pressure. API 570 9.3.7
