510 Sec8 div1

Question 1

Vessels covered by this Code pressure from

Answer 1

15 PSI to 3000PSI

Question 2

Vessels excluded from this Code

Answer 2

Less Than 6” in Diameter and Containing water with one of the following:
- A Design pressure less than 300 PSI
- A Desing temperature less than 210 Degrees F

Question 3

Welding Materials when received may be accepted if???

Answer 3

It is tagged or marked by the material specification

Question 4

Minimum Thickness permitted for shells and heads shall be

Answer 4

1/16 In. Exclusive of Corrosion Allowance

Question 5

Minimum Thickness of shells and heads of unfired steam boilers shall be

Answer 5

1/4 In. Exclusive of any Corrosion Allowance

Question 6

Minimum thickness of shells and heads used in compressed air, steam, and water service

Answer 6

3/32 in.

Question 7

Plate Under Tolerance actual thickness less than the design thickness shall not be used unless

Answer 7

The difference in thicknesses is less than the smaller of 0.01in. or 6% of the design thickness.

Question 8

Impact testing is not mandatory for pressure vessel materials that satisfy all of the following requirements:

Answer 8

• The material shall be limited to P-No.1, Gr. No. 1 or 2
  -The thickness shall not exceed 1/2in. for materials in curve A. and 1in. for materials listed in Curve B, C, D
  -The completed vessel shall be hydrostatically tested or alternatively vessel may be Pneumatically tested.
  -Desing Temp no warmer than 650 Degrees F.
  -Thermal & Mechanical shock loadings are not a controlling design requirement.
  -cyclical loading is not a controlling design requirement.

Question 9

Opening in Pressure Vessel
For ID Equal to or Less than 60” the max opening =

Answer 9

1/2 ID but not exceed 20”

Question 10

Impact test procedures and apparatus shall conform to ?

Answer 10

paragraphs of SA 370 at ASME II

Question 11

Opening in Pressure Vessel
For ID Greater than 60”, the max opening =

Answer 11

1/3 ID but not exceed 40”

Question 12

Impact test temperature shall no be warmer than?

Answer 12

MDMT

Question 13

Each set of impact test specimens shall consist of how many specimens?

Answer 13

3

Question 14

Test specimens shall be of which type?

Answer 14

V-Notch Type

Question 15

Hydrostatic Test Pressure Formula

Answer 15

1.3 X MAWP X S test / S Design or 1.3 X MAWP X LSR (LSR - Lowest stress ratio = S test/S design

Question 16

Hydrostatic Testing inspection shall be made of?

Answer 16

all joints and connections

Question 17

Hydrostatic Testing inspection shall be made at what pressure

Answer 17

Not less than the hydrostatic test pressure divided by 1.3

Question 18

Recommended that metal temperature during hydrostatic test be maintained at what temperature?

Answer 18

at least 30 degrees F above the minimum design metal temperature but need not exceed 120 degrees F to minimize the risk of brittle fracture.

Question 19

Can welds of vessels be painted or coated prior to the pressure test?

Answer 19

Can’t be painted or coated either internally or externally.

Question 20

Hydrostatic test pressure shall be reduced to what value?

Answer 20

A value equal to the test pressure divided by 1.3 to inspection

Question 21

Pneumatic test may be used in lieu of the hydrostatic test if?

Answer 21

• Designed and/or supported that they cannot safely be filled with water
• Not readily dried, that are to be used in services where traces of the testing liquid cannot be tolerated.

Question 22

Pneumatic test pressure Formula

Answer 22

1.1 X MAWP X Stest/Sdesign

Question 23

Pneumatic test pressure shall be gradually increased to what pressure?

Answer 23

Gradually increased to not more than 1/2 of the test pressure. Thereafter, the test pressure shall be increased in steps of approximately 1/10 of the test pressure until the required test pressure has been reached

Question 24

Where shall the indicating gauges be connected to?

Answer 24

Directly to the vessel or with a pressure line that does not include valves.

Question 25

Indicating gage shall be provided and located where?

Answer 25

So that the gage is visible to the operator for the duration of the test.

Question 26

For Large vessels, what kinds of gages is recommended for use

Answer 26

Recording gage to be used in addition to indicating gages

Question 27

What shall the indicating pressure gage range be

Answer 27

1 1/2 to 4 times the test pressure

Question 28

Required Marking for after RT examination been performed. RT1 =

Answer 28

Full Radiography (E=1)

Question 29

Required Marking for after RT examination been performed. RT2 =

Answer 29

Spot RT, UW-11(a)(5)(-b) requirements have been met (E=1)

Question 30

Required Marking for after RT examination been performed. RT3 =

Answer 30

Spot RT, UW-11(a)(5)(-b) requirements have not been met (E=.85)

Question 31

Required Marking for after RT examination been performed. RT4 =

Answer 31

When only part of the complete vessel has satisfied the radiographic requirement where none of the markings RT1,2,3 are applicable. "Can't identify E"

Question 32

Required Marking for after RT or UT examination been performed. HT=

Answer 32

when the complete vessel has been post weld heat treated

Question 33

Required Marking for after RT or UT examination been performed. PHT=

Answer 33

When only part of the vessel has been post weld heat treated.

Question 34

What service restrictions do vessels that contain lethal substances liquid or gaseous have?

Answer 34

-All butt welded joints shall be fully radiographed (RT1) -All joints of Category A shall be type no.1 -All category B and C joints shall be type No.1 or No.2 -When fabricated of carbon or low alloy steel, vessels shall be post weld heat treated

Question 35

What is lethal substances

Answer 35

Gases or liquids of such a nature that a very small amount of mixed or unmixed with air is dangerous to life when inhaled.

Question 36

Welded Joint Categories Category A =

Answer 36

Longitudinal

Question 37

Welded Joint Categories Category B =

Answer 37

Circumferential

Question 38

Welded Joint Categories Category C =

Answer 38

Flanges

Question 39

Welded Joint Categories Category D =

Answer 39

Opening

Question 40

Welded Joint Categories A circumferential weld connecting hemispherical heads to shells

Answer 40

Category A - Longitudinal

Question 41

Joint Efficiency by weld type and weld category Type No.1 =

Answer 41

Butt Joints welded from both sides, or one side without a permanent backing strip that can be verified full penetration and fusion from inside.

Question 42

Joint Efficiency by weld type and weld category Type No.2 =

Answer 42

Butt Joints welded from one side only with a permanent backing strip

Question 43

Joint Efficiency by weld type and weld category Type No.3 =

Answer 43

Butt joints welded from one side only without permanent backing strip and cannot be verified full penetration and fusion from inside.

Question 44

Lowest permissible temperatures for welding?

Answer 44

-No welding to be done when temperature of the base metal is lower than 0 Degrees F -At temperatures between 32 degrees F and 0 degrees F, surface areas within 3in. of the weld is to be heated to a warm to the hand (Estimated Above 60Degrees F) before welding

Question 45

Which table in Asme section VIII Div 2 can you find the Alignment tolerance by Thickness, and weld joint category

Answer 45

UW-33

Question 46

Why is PWHT used?

Answer 46

To reduce residual stress

Question 47

Which section in Asme section VIII Div 1 does design thickness formulas start?

Answer 47

UG-27

Question 48

What is Joint Efficiency

Answer 48

a penalty applied to the allowable stress in the design formulas. Simply put " The better the joint is, the higher the efficiency, up to a possible value of 1.0 being the equivalent of a seamless plate.

Question 49

How is joint efficiency increased?

Answer 49

By type of joint and the amount of NDE this is performed.

Question 50

Which Table in Asme section VIII Div 1 can you find the joint efficiency?

Answer 50

UW-12

Question 51

When RT2 Stamping is used, the requirements of UW-11(a)(5)(-B) must be met. What does this mean?

Answer 51

The vessel would have to be completely spot radiographed and have intersections where category B or C butt welds meet category A welds radiographed as well. " More RT Performed"

Question 52

What are the 5 type of formed heads of a pressure vessel listed in Asme Section VIII-1?

Answer 52

Ellipsoidal Torispherical Hemispherical conical toriconical

Question 53

Formula of Ellipsoidal Head Thickness Calculation

Answer 53

t=P(D)/2(S)(E)-o.2(P)

Question 54

Formula of Hemispherical Head Thickness Calculation

Answer 54

t=P(L)/2(S)(E)-0.2(P)

Question 55

Variables for Formula of Ellipsoidal Head Thickness Calculation t=P(D)/2(S)(E)-o.2(P)

Answer 55

P= Internal design Pressure D= Inside diameter of the head skirt S=maximum allowable stress value E= Lowest efficiency of any joint in the head t= minimum required thickness of head after forming

Question 56

Formula of Hemispherical Head Thickness Calculation t=P(L)/2(S)(E)-0.2(P)

Answer 56

P= Internal design Pressure L= Inside Spherical or crown radius S=maximum allowable stress value E= Lowest efficiency of any joint in the head t= minimum required thickness of head after forming

Question 57

What is MAWP for a Vessel

Answer 57

The maximum pressure permissible at the top of the vessel in its normal operating position at the designated coincident temp specified for that pressure

Question 58

What is MAWP for a vessel part.

Answer 58

It is the maximum internal or external pressure including the static head