Pipefitting Trade Test

#1. A concentric reducer is used to?

Reduce the centre line of the pipe run

Reduce the length of the pipe run

Reduce the schedule of the pipe run

Reduce the diameter of the pipe run

#2. What type of gasket would you expect to find on a 10" NB 600# RF flange?

Spiral Wound

Ring Type Joint

1.5 Thick Wall face Gasket

Neoprene

#3. What is the typical angle of prep for butt welding on grade 4130 Sch XXS pipe?

45°

37.5°

15°

30°

#4. When is it acceptable to combine NPT and BSPP threaded fittings?

Always

Never

When fitting NPT to BSPP female

When fitting BSPP male to NPT female

#5. What is NOT required when welding 2" carbon steel butt weld?

Welding Set

Wire / Rods

Purge

Earth

#6. A rating of 150# refers to a flange's ...?

Size

Pressure rating

Face finish

Bolt pattern

#7. Ultimately, who is responsible for confirming an isolation is in place before breaking containment?

The permit co-ordinator

The OPS supervisor

The PA carrying out the work

The OCS

#8. From which size onwards is NB of pipe equal to OD of pipe

12"

13"

14"

16"

#9. Apart from the pipe diameter, what other information should be stamped on the edge of a flange?

Weight of Flange

Material of Flange

Thickness of Flange

Bolt hole diameter

#10. What is the most common specification of carbon steel pipe in our industry?

A106

A126

A312

A182

#11. Can we re-use spiral wound gaskets?

Depends on size

Yes

Only if they are in good condition

No

#12. Where would you expect to find an overall system view of Mechanical Equipment, Valves associated with process?

On a P & ID

On an Isometric

General Arrangement

Plot Plan

#13. What is the abbreviation FOF used for on isometric drawings?

Force of fitting

Fit on first

Face of flange

Face of fitting

#14. Typically how many times above operating pressure should pipe work be hydrostatically tested to?

1.1

1.2

1.5

2

#15. Identify the correct bolt torque sequence for the pictured 8-hole flange?

1-2-3-4-5-6-7-8

1-5-3-7-2-6-4-8

1-5-2-4-8-6-7-3

1-8-4-5-2-3-6-7

Results