NDT

Question 1

In NDT what are the 2 RT sources?

Answer 1

X-ray and gamma ray

Question 2

What thickness steel is the RT source x - ray good for?

Answer 2

60mm

Question 3

In RT briefly describe the source and ill position for the four types.

Answer 3

SWSI - source out film in
SWSI panoramic - source in film out
DWSI - source out film out
DWDI- source out film out

Question 4

Describe the ml of hydrogen and baking of mma rods and their types

Answer 4

Cellulosic - 90ml/100g no baking
Rutile - 25-30ml/100g
Basic - >5ml /100g 300-350* baking holding 150* quiver 70-80*

Question 5

What principle does PT rely on?

Answer 5

Capillary action

Question 6

What type of material does PT not work on?

Answer 6

Porous

Question 7

What is the dwell time for the penetrant in PT?

Answer 7

15-20 mins

Question 8

Once the penetrant has been removed from the weld what do you then apply to the welding PT?

Answer 8

Developer

Question 9

What temperature range does pt work in?

Answer 9

5-60 degrees

Question 10

MT - what materials is this suitable

Answer 10

Only ferromagnetic steels magnetic

Question 11

What is the advantage of MT over PT?

Answer 11

It can test some shallow flaws below the surface

Question 12

What sin the electro magnet called in MT?

Answer 12

Yolk

Question 13

How does x ray beams shoot a specimen?

Answer 13

electron beam

Question 14

what type of x ray can shoot 300mm thickness?

Answer 14

linear and betatron

Question 16

What is a compression probe generally used for when testing plate?

Answer 16

Plate laminations

Question 17

Answer 17

D