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WorksheetsTEP piping 4
Total questions: 10
Worksheet time: 2hrs 40mins
Calculate min. hydrotest pressure for piping with max. allowable working pressure (MAWP) of 200 psi.
260 psi
150 psi
300 psi
200 psi
Pipe support functions are:
to keep the line straight
to prevent piping from sagging
helps absorb vibration
provide more spacing for maintenance
Factors to consider when selecting pipe support:
Weight of piping, insulation & contents
Wind, snow and ice loading.
Spans between supports
Strength of equipment and supporting structures
Isolation can be performed with mechanical blinding devices such as:
spacer
spade
spectacle blind
blind flange
Routine works such as _________________ will not normally require isolation before carrying out the works.
setting controllers
taking pressure readings
gas testing for confine space entry
taking temperature readings
The highest level of isolation method from the following is:
DBB
double block valves
DBB and spade
Single block valve, bleed valve and spade
Isolation method with the highest overall cost would be:
single block valve
spade blinding
removable spool
DBB
Scope of work for mech. fitter in isolation work:
bleeding using bleed valve
operate DBB
spectacle plate blinding
spool removal
Consequences on personnel normally associated with fiberglass insulation works:
eye irritation
skin irritation
respiratory irritation
wet insulation
Protection for corrosion used for underground piping is normally accomplished by:
rock wool insulation
wrapping
coating with epoxy or bitumen
primer only
