ASME B31.3 M8-9

What is the gap value of socket weld to prepared before welding as per ASME B31.3?

• min. 2.0 mm

• approx. 1.0 mm

• approx. 1.5 mm

• max. 2.5 mm

Minimum requirement for bolt length engagement in flanged joint as per ASME B31.3:

• Bolts shall extend through nuts such that there are maximum 1 thread with lack of engagement inside nut.

• Bolts shall extend through their
  nuts such that there is complete thread engagement for
  the full depth of the nut.
  

• Bolts shall extend through nuts such that there are minimum 3 threads protrusion shall be visible beyond the nut.

• Bolts shall be long enough to ensure proper engagement of thread with satisfactory tightness.

The preheat zone shall be at or
above the specified minimum temperature in all directions from the point of welding for a distance of ____________.

• the
  smaller of 75 mm (3 in.) or 1.5 times the greater
  nominal thickness.

• the
  larger of 75 mm (3 in.) or 1.5 times the greater
  nominal thickness.

• the
  larger of 50 mm (2 in.) or 2 times the greater
  nominal thickness.

• the
  larger of 25 mm (3 in.) or 1.5 times the greater
  nominal thickness.

For hydrostatic test without use of water, another
suitable nontoxic liquid may be used. If the liquid is flammable, its flash point shall be at least ________.

• 120 °C

• 80°C

• 200°C

• 49°C

Minimum hydrotest pressure of piping with internal design pressure of 300 psi?

• 250 psi

• 500 psi

• 450 psi

• 330 psi

What is the initial gage pressure during pneumatic testing if design pressure of piping is 150 psi for gradual increase before test pressure?

• 25 psi

• 75 psi

• 50 psi

• 10 psi