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api 570 re-do > API 577 > Flashcards

API 577 Flashcards

1
Q

The level of learning and training offered by RP 577 is __________________.

A

not a replacement for AWS CWI training

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2
Q

“DCEN” means.

A

direct current, electrode negative

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3
Q

Another name or abbreviation for a penetrameter is:

A

I.Q.I.

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4
Q

A theoretical throat dimension is based on the assumption that the root opening is equal to:

A

Zero

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5
Q

Welding inspection is a critical part of any ____________ program.

A

Quality Assurance

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6
Q

Welding inspection can be separated into 3 distinct stages:

A

before welding, during welding, after welding

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7
Q

One of the items that should be checked prior to welding is:

A

a. confirm NDE examiners qualifications
b. confirm acceptability of heat treatment procedures
c. review WPS, PQR, and WPQ’s

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8
Q

When discovered, welding defects should be:

A

removed and re-inspected

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9
Q

NDE examiners should be qualified to ______ when specified by the referencing code.

A

SNT-TC-1A

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10
Q

As a minimum, each Inspector should review the ______________ prior to starting each job.

A

site safety rules

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11
Q

An advantage of SMAW is:

A

can be used on almost all commonly-used metal or alloy

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12
Q

GTAW and SMAW can be distinguished from other processes as they are both used with _______.

A

cc power supplies

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13
Q

When welding aluminum, and magnesium with GTAW, ______ is normally used.

A

AC

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14
Q

GMAW can be used in 3 distinct modes of transfer. The coolest or fastest freezing of these transfers is:

A

short circuiting

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15
Q

A limitation of the FCAW process is:

A

slag removal

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16
Q

One of the unusual aspects of SAW is that:

A

the arc is not visible during welding

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17
Q

The three welding documents required to make a production weld (as required by ASME IX) are:

A

WPQ, PQR, WPS

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18
Q

F numbers are assigned to electrodes based on their ______________.

A

usability characteristics

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19
Q

What type of electrodes should be stored in a heated oven after initial removal from the package?

A

low hydrogen

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20
Q

Slightly damp low hydrogen electrodes should be:

A

rebaked in special ovens

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21
Q

A welder continuity log should be maintained to allow verification that each welder has utilized each welding
process within a _______ period.

A

six month

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22
Q

Undercut is normally found_______________.

A

at the weld interface

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23
Q

Weld underbead cracking is normally found _______________________.

A

in the HAZ

24
Q

The best NDE method used to inspect butt joints volumetrically (through the entire weld) would be:

A

RT

25
Q

Hydrogen cracking may occur in all of the following welding processes, except:

A

GMAW

26
Q

In austenitic stainless steel, incomplete penetration is normally corrected by:

A

proper heat input

27
Q

“Optical aids” include which of the following:

A

mirrors

28
Q

A typical fillet weld gauge would include which of the following:

A

skew-T

29
Q

ACFM is an NDE technique that is applied to detect:

A

surface indications in carbon, alloy and stainless steel

30
Q

Eddy Current (ET) has limited use in welding inspection, but is often used in____________.

A

b. coating thickness measurement

c. measuring cladding thickness

31
Q

The NDE Examiner that performs the radiographic film interpretation should be qualified, as a minimum, to
a _____.

A

ASNT Level II

32
Q

Cobalt is normally used for radiographing thicknesses of _________.

A

1.5” – 7.0”

33
Q

A film density of 1.0 will allow _______% of light through to the film.

A

10%

34
Q

Ultrasonic examination that shows a plan view of the test object would be _____________.

A

C-scan

35
Q

Each pass of the UT transducer should overlap the previous pass by _____% of the transducer dimension

A

10%

36
Q

Because of the similarities in the shape of the grains and cooling characteristics, a weld can be considered
to be a small_______________.

A

casting

37
Q

A defect is also considered to be a (an):

A

rejectable flaw

38
Q

The vast majority of metallic materials used in refineries or chemical plants are ___________.

A

wrought materials

39
Q

Hydrogen in welding may come from various sources, such as:

A

a. lubricants
b. moisture
c. net electrodes

40
Q

Materials with high thermal conductivity will require ___________________.

A

higher heat input to weld

41
Q

Metals with a high coefficient of thermal expansion are more susceptible to:

A

warpage and distortion

42
Q

The three hardness tests normally used are the:

A

Rockwell, Vickes, Brinell

43
Q

In Rockwell hardness testing, the minor load is always____________________

A

10 kg

44
Q

One of the most common types of fracture toughness tests is the _________ test.

A

Charpy

45
Q

How does preheating carbon steel tend to reduce hydrogen-induced delayed cracking?

A

slows the cooling rate – prevents martensite formation

46
Q

Preheat is usually monitored by________________

A

a. thermocouples
b. crayons
c. contact pyrometer

47
Q

The primary reason for PWHT is:

A

relieve residual stresses

48
Q

Hardness and hardenability are two terms that:

A

mean two different properties

49
Q

A typical test for hardenability is the ___________.

A

Jominy Bar test

50
Q

The general Brinell Hardness limit for 5CR-Mo steels is:

A

241

51
Q

Which of the following elements influences the mechanical properties of weldments more than any other?

A

carbon

52
Q

A very specialized external loading weld test is the _________ test.

A

bend

53
Q

Austenitic stainless steels typically contain chrome and nickel, and are used for:

A

a. corrosion resistance

b. resistance to high temperature degradation

54
Q

The most common measure of weldability and hot cracking of stainless steel is the _________.

A

ferrite number

55
Q 
An extra-low hydrogen electrode (H4) should be used when hot tapping carbon steels with a CE greater
than \_\_\_\_\_\_\_\_\_\_\_\_\_(%)
A

0.43

56
Q

To reduce burn-through potential, liquid flow rates should be between _________ and _________ when
hot-tapping.

A

0.4 – 1.2 m/sec

57
Q

A common weld defect encountered with the GMAW-S welding process is:

A

LOF

api 570 re-do (4 decks)

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