Nccer
When performing a hydrostactic test, at what percentage of the MAXINUM intended test pressure should the test be paused and the system inspected?
50%
Who is qualified to repair power tools.
Competent Technician
Convert 1/4 to its decimal equivalent.
.25
Convert 9/16 to a decimal.
0.56
What is the product of 7.60 x 0.12
0.912
In relationship to the diameter of the eye bolt, how deep should the tapped holes for eye bolts be?
1 1/2 times
What is the height of the raised face on a class 600 forged steel weld neck flange?
1/4
What is the ratio of the distance that the ladder should be from the base of the wall to the height where the ladder meets the wall.
1/4
What is the 4th ordinate cutback measurement for a 3" diameter type 3 dummy leg on a 6"' elbow
10 3/16
What is the length of pipe required to fabricate a 6"diameter schedule 40 pipe spool with one class 150# RFWN flange on one end, and one class 300# RFWN flange on the other end, with a face-to-face measurement of 18 1/2' assume a 1/8 welder gap)
10 7/8
How many feet apart must oxygen and fuel gas cylinders be stored, unless there is a 5 ft high, 30 minute burn rated wall between them?
20
How much would a 40° - 6"length of 12" diameter standard weight pipe weigh?
2009lbs
What is the elevation of the BOP of an 12" schedule 40 pipe if its center line elevation is 203'- 1 1/2"?
202'- 7 1/8"
What is the highest safe standing step or level from the top of a step ladder ( A-Frame)
2nd
What is the travel on a rolling offset that has a Run of 18", a roll 24", and a height of 12"
34 15/16
If the area of a rectangle is 432 sq ft and one side is 12 ft long, how long is the other side?
36ft
What MINIMUM number of bolts can be removed from an 8-bolt flange when a slip blind is inserted for hydrotesting?
4
A vertical pine filled with 10" of water has a head pressure of
4.33 psi
When performing a line break, first?
Break the bolts down & away from you
Which of the following is a quick opening valve?
Butterfly
Material placed in the bottom of the trench under the pipe to provide support is called.
bedding
In piping systems, ball joints are installed to allow for?
expansion and contraction
All of the following types of pipe are thermoplastic EXCEPT.
fiberglass
What is used to open flanges for the installation of a test blind?
flange spreader
In-line specialty ball joints solve all the following problems EXCEPT.
flow
Bending pipe allows the process to
flow more freely
Piping that is field-routed to a pump must be supported
independently
A piping drawing that shows both the side view and the top view of a piping system is
isometric
When fabricating a spooled piece of pipe which type of drawing would normally be used
isometric
Which type of field sketch has base lines that are 30 degrees to the horizontal axis?
isometric
Where are title blocks typically located on a drawing?
lower right
All of the following drawing dimensions are used to determine the overall length of Run of a pipe EXCEPT.
pipe diameter
Performance, reliability, and quality of components are assured by use of
standards and codes
Where is specific information needed to install piping and associated items found ?
standards and specifications
A plug valve is used to.
start and stop flow
Which of the following parts of a layout will NOT be the same for all three lines in an equally spread offset?
starting point
What is used when lighting a cutting torch ?
striker
Damaged and broken tools should be
taken out of service
Flat Face Flanges require which type of gasket?
Full face
The first step to changing blades and bits on power tools is to
Disconnect power
To what position does a pneumatic control valve that loses its air supply return?
Fall safe
Expansion joints allow
For linear expansion and contraction of pipe lines
Which of the following plastic pipes is NOT joined by solvent welding?
HDPE
In relation to welding HAZ stands for
Heat Affected Zone
Globe valve:
Is better than a gate valve for throttling flow
Which drawing gives enough information to be able to fabricate a pipe run?
Isometric
Information referring to design requirements and materials for pipe, flanges, valves, and related items to be used is found in.
Isometric drawings
Which of the following types of copper tubing has the thickest wall
K
A plot shows the
Location of the building on a piece of property
A threading machine equipped with NPT dies is designed to cut which type of threads.
National pipe threads
When can a lighted torch be unattended?
Never
What is the standard torqueing valve of the Victaulic coupling bolts?
No torquing required
Trenches MUST be designed, excavated, and shored according to
OSHA standards
Ground fault circuit interrupters SHOULD be located
On cords with only 3 prong connections
What must be done to MOST socket welded valves before being welded into place?
Open the valve completely
The two types of scaffolds used by pipefitters is the Tubular Buck and
Pole
Socket weld joints have a gap between the end of the pipe and the bottom of the socket. What is the purpose of this gap?
Prevents weld cracking
The majority of pipe hangers and supports are coated with zinc-rich galvanizer to.
Provide corrosion resistance of pipe supports
Level glasses are also called
Spirit viles
Which of the following tools should be used to install a 2" threaded chrome plated pipe in a fitting?
Strap wrench
The three MAJOR trig functions are
Tangent , cosine, sine
To signal that vou want to use the main hoist
Tap your hard hat
The working load limit of hoisting equipment is based on a straight, vertical hoist line and
The load being freely suspended
What happens when a misaligned pipe flange is bolted up to an aligned pump's suction flange?
The pump and motor will be out of alignment
A cold spring relieves
thermal expansion
The movement of pipe that is caused by an increase in temperature is called
thermal expansion
Expansion loops are NOT made with these types of fittings.
threaded
What is the most important hazardous condition in or around an excavation?
to cave in
In MOST instances, what is stamped or forged on the side of valves, fittings, and flanges?
type of material, size, and pressure rating
Chain come-alongs are PRIMARILY designed for?
vertical lifting
What is a flexible link seal used for?
Seal a pipe in a pipe sleeve
What does WPS stand for
Welding Procedure Specification
The two steps in making up threaded joints are the hand engagement and
Wrench makeup
Which of the following is a classification of cast iron pipe?
XH
A pipe nipple is any length of threaded pipe that is shorter than
12"
At what dimension does a pipe begin to be measured by the outside diameter:
14 inches
At and above what norminal pipe size is the O.D. of the pipe the same as the norminal size of the pipe.
14"
What is the MINIMUM height above the side of the trench, that a trench b. 14 of 22 should extend?
18"
The angles of any triangle add up to
180º
What is center-to-end length on a 3,000# 2"' SW 90 ELL?
2 3/8"
What is the length of pipe required to fabricate a 8" diameter schedule 40 pipe spool with one 90 degree butt weld elbow on one end, and one 45 degree butt weld elbow on the other end, with a center-to-center measurement of 72" (assume a 1/8 welder gap)
54 3/4
The MINIMUM number of pre-heat holes for liquefied fuel tips is
6
A length of 1 1/2-inch pipe is to be cut to run between two 90-drgree 6,000# threaded fittings. The fittings measure 7 ft 2 1/4 inches center-to-center. What is the cut length of the pipe?
6 ft 10 and 5/8 inches
What is the reference angle if the hypotenuse of a right triangle is 36" and its adjacent side is 14".
67 degrees
What would be the long segment measurement of a SIX-PIECE, 90 degree mitered elbow that has a radius of 24"
7 5/8
A 4-inch lateral riser is to be fabricated for a 6-inch pipe. How many ordinate lines will be needed to lay out this cut ?
8
Find the lowest common denominator for 1/8 and 1/2
8
What is the MINIMUM grade of chain that may be used for rigging loads overhead?
8
What is the ID of 10" schedule 80 piping.
9 9/16
All piping and piping components are identified by what international identification system?
ASTM
Ladders should be inspected
Before each use
The rigger MUST carefully inspect the chain hoist.
Before each use
When are rupture discs installed into a pipeline?
Before start-up of the system
What does this symbol refer to
Eccentric reducer
What are installed in a pipe run to provide extra flexibility between anchors and accommodate thermal growth and contraction?
Expansion loops
If both fists are placed in front of your body with your thumbs pointed outward, the crane operator should.
Extend the boom sections
Which of the following actions should be taken before a hydrostatic test is performed ?
Remove pressure relief valves
Dry washing is a form of
Removing excessive weld
A pretest field inspection includes all of the following EXCEPT the
Vent at the low point of the system
The term, plum, relates to
Vertical alignment
What is the formula for finding the volume of a cylinder?
Volume=πr^2h
Who needs to inspect an excavation prior to the start of work each day?
competent person
