3rd Flashcards

1
Q

CSA welding standard

A

W59

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2
Q

CSA standard for companies

A

W47.1

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3
Q

What does w59 have to off set costs of making a welding procedure?

A

A number if preferred qualified welding procedures

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4
Q

What is creep?

A

Molecules start to shift at higher temp

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5
Q

Advantages of standardize

A

Increased quality and reliability

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6
Q

Cwb difference between class and classification?

A

Classification: refers to T,S,FW,ASW, OR WT (t open root, s with backing for example)
Class refers to position

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7
Q

CWB how wide are each specimen?

A

38 mm

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8
Q

How big is the cwb gap between plates

A

2G : 8mm
Others 13 mm

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9
Q

What gets a vessel excluded from absa

A

Not exceeding 15 psi
Not exceeding 6 inches

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10
Q

What is the best process for ship building?

A

SAW

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11
Q

ASME boiler code section

A

VIII

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12
Q

ASME section on non destructive testing

A

V

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13
Q

Can the quality of steel welded to a boiler be of different quality.

A

Must be at the same quality

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14
Q

Tapered transition ratio

A

3:1

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15
Q

Temp your not supposed to weld below

A

-18

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16
Q

CSA standard for piping systems

A

Z662 underground
B31.3 above ground (asme)

17
Q

Minimum pressure vessel thickness

A

1.5 mm/ 1/16th “

18
Q

Out of roundness max between in and out diameter

A

1%

19
Q

Min pressure for hydrostatic test on a vessel? On pipe

A

1.3x
1.5
max allowable working pressure

20
Q

Welder performance qualification form

A

Qw-484

21
Q

Welding safety csa #

A

117.2

22
Q

Codes for storage tanks

A

Api 650

23
Q

Csa standard B51 covers

A

Boilers and pressure vessels

24
Q

Stress calc formula

A
25
Q

Brinelle test: how big is the hardened steel ball?

A

10 mm

26
Q

Fatigue test measures

A

The ability of a material to withstand repeated loading or unloading

27
Q

Endurance limit :

A

The max dynamic load a material can handle through infinite cycles without breaking

28
Q

Creep tests:

A

Test low stress over long periods of time usually at elevated temps

29
Q

Most important destructive test for industry

A

Tensile test

30
Q

Steels modulus of elasticity

A

30,000 lbs/ square inch

31
Q

Destructive testing yields 2 types of data, what are they n definitions

A

Quantitative: numbers, ect
Qualitative: taste, appearance, ect

32
Q

Nick break test is used for

A

Check the interior of a weld for flaws such as lack of fusion, porosity, slag inclusion

33
Q

Most impact tests ( eg charpy) measure

A

A materials impact strength

34
Q

What test is for softer materials: Rockwell or brinell?

A

Brinell

35
Q

Difference between elastic and plastic deformation?

A

Plastic doesn’t go back

36
Q

According to api 650 welding procedure specifications must conform to

A

ASME section IX

37
Q

Csa standard B51 covers

A

Boilers and pressure vessels

38
Q

What asme section deals with welding qualifications

A

IX

39
Q

I cubic foot is _____ gal

A

6.239