ASME ASME Piping Systems B31 Codes 2

Question 1

Which pressure testing method is preferred by ASME B31.3 for process piping?

Accepted Answer

Hydrostatic testing

Answer

Pneumatic testing

Answer

Radiographic examination only

Answer

Magnetic particle testing

Question 2

In ASME piping codes, what does the term 'design pressure' represent?

Accepted Answer

The most severe coincident pressure and temperature expected during normal operation

Answer

The maximum allowable working pressure at ambient temperature

Answer

The hydrostatic test pressure divided by 1.5

Answer

The pressure at which the relief valve is set

Question 3

What is the allowable test pressure for a hydrostatic test under ASME B31.3?

Accepted Answer

1.5 times the design pressure

Answer

1.1 times the design pressure

Answer

1.25 times the design pressure

Answer

2.0 times the design pressure

Question 4

Under ASME B31.3, a 'normal fluid service' piping system requires what minimum level of radiographic examination for butt welds?

Accepted Answer

Random (10%) radiography

Answer

100% radiography

Answer

No radiography required unless specified

Answer

Spot radiography on 5% of welds

Question 5

Which ASME B31 code applies to gas distribution piping within buildings?

Accepted Answer

B31.2

Answer

B31.3

Answer

B31.5

Answer

B31.8

Question 6

In ASME piping, what is the purpose of the 'stress intensification factor' (SIF)?

Accepted Answer

To account for increased stress at fittings and bends compared to straight pipe

Answer

To reduce allowable stress for high-temperature service

Answer

To define the safety factor applied to yield strength

Answer

To account for corrosion allowance in wall thickness