問題一覧
1
What information should always be on the side of a chain hoist?
Load Capacity
2
What is the best method to identify water loss on a tube of an exchanger?
Wet Mag
3
In a hydro static test of a vessel what is the most common test method?
Water
4
What does the 70 stand for on the welding electro code e7018?
70,000 PSI tencil strength
5
. What do the intials nts stand for on a drawing ?
Not to scale
6
When plugginga U tube exchanger the only component that needs to be removed is the
Channel Head
7
All of the following are influenced by the typeof service for which the exchanger will be used except
Type of support being used
8
What is the typical method for locking newly installed tubesin a tube sheet?
Rolling
9
Which of the following tubes is designed to vent a tube?
Two hole punch
10
How often should you inspect any type of riggingdevice
Before each use
11
Where are the blocks typically located on a drawing?
Lower right
12
Taps are used to
Cut interior threads
13
An advantage of mechanical joint preparation compared to thermal beveling is that it is?
More precise
14
Which of the following are shown on piping and instrumentation drawings
Valves
15
When placing flex pack packing what is the proper rotation
45 Degrees
16
Which organization writes the boiler and pressure vessel code
Asme
17
Chackles should never be side loaded unless approved by the
Manufacturer
18
Where is a vapor horn typically located?
Bottom of tower
19
Putting a sling into a chocker hitch reduces the sling capacity by approximately
25%
20
When plugging a straight tube exchanger in the shell all the heads need to be removed except the
Floating head
21
When off setting trays what is the proper rotation between tray level
90 Degrees
22
How are stud bolts threaded
On both ends
23
What do castellated and slotted nuts use to prevent them from loosening
Coffer pins
24
What is the piece of equipment inside a tower that maintains the height of the liquid?
Weir
25
While pulling blinds on a 6”-150# line on a tower, what size wrench should be used?
1-1/4”
26
To help control a load install a
Tag line
27
Where are football washers used?
Around internal manways
28
What does the threaded series symbol UNC stand for
Unified national course
29
The purpose of a tie rod is to
Anchor baffles in place
30
When tightening up a man way on a tower that has 1-1/4” X 8 studbolts, what size wrench should you use?
2”
31
Gaskets may be affected by all of the following except the
Number of bolts on flange
32
When are steel chain slings recommended?
in high heat conditions
33
The hitch made by wrapping the sling around the load, then passing the sling throught a shackle is called?
Choker hitch
34
Which of the following has a greater possibility of being a respiratory hazard?
Asbestos
35
According to OSHA oxygen and acetylene cylinders in storage must be separated what minimum distance?
20 Ft
36
What is the first thing that a boiler maker should do before cutting into a tank or vessel?
Make sure proper permit has be obtained
37
On site, Who determines what grade of material to be used for repair?
QC
38
How should bolts on a 8-bolt flange be tightened?
Cross over pattern
39
How many bolts should be removed so that a 3-inch, 150# flange can be hot bolted?
None
40
How often must entry permits be updated during normalworking hours?
at the end of every shift change
41
What does this hand sign mean?
Swing
42
What does this hand sign mean?
Raise Boom
43
What does this hand sign mean?
Extend Boom
44
What do these hand signs do?
Stop crane