Ip Questions Flashcards
What do you use to lube glass pipe?
A. Silicone grease
B. Water
C. Petroleum jelly
D. Pipe thread compound
B. water
What is the minimum sump vent size?
A. Equal to the largest pipe size
B. Minimum 2” or 1 pipe size smaller than the largest pipe
C. Always 3”
D. As specified in the building code
B. Minimum 2” or 1 pipe size smaller than the largest pipe
What is the correct angle for a copper flare?
A. 30 degrees
B. 45 degrees
C. 60 degrees
D. 90 degrees
B. 45 degrees
What is the nominal INSIDE diameter range?
A. 1/16” to 10”
B. 1/8” to 12”
C. 1/4” to 14”
D. 1/2” to 16”
B. 1/8” up to and including 12”
Where are toilet measurements found?
A. In the specifications manual
B. On the floor plan
C. In the installation guide
D. In the plumbing codebook
B. On the floor plan
What is the standard offset fitting used in plumbing?
90° elbows
22.5° bends
45° offsets
60° offsets
45° offsets
What is the copper brazing filler metal for medical gas?
BCuP-3
BCuP-5
BAg-7
BCu-7
Answer: BCuP-5
How do you calculate cooling tons from BTU?
Divide BTU by 10,000
Multiply BTU by 1.2
Divide BTU by 12,000
Multiply BTU by 0.08
Answer: Divide BTU by 12,000
If you find someone unconscious, what do you do first?
A. Call emergency services immediately
B. Assess the situation
C. Move the person to a safe location
D.Start CPR
Answer: Assess the situation
What is the maximum recirculation pump distance?
10 meters
20 meters
30 meters
40 meters
Answer: 30 meters
Why do sprinkler heads not pop up?
A .High pressure
B. Low water temperature
C. Low pressure
D. Clogged nozzles
Answer: Low pressure
What should you keep inside when testing with an ohmmeter (drain tank)?
A. Heating element
B. Pressure relief valve
C. Water
D. Thermostat
heating element
What do you do with nitrogen in medical gas systems?
A. Purge med pipe and use BCuP-5, no flux
B. Test pipe pressure and use BAg-7
C. Pressurize to 500 psi and use BCuP-3
D. Clean pipes and use BAg-8 with flux
Answer: A Purge med pipe and use BCuP-5, no flux
Where is the best place to take a private water sample?
A.Main line
B.Storage tank
C.Tank tee
D. Faucet
Answer: C Tank tee
What tool is used to locate a stuck ball in a ball test?
A. Pressure gauge
B. Camera
C. Thermal scanner
D.Stethoscope
B Camera
A 1500 psi system will need what type of weld?
A.Seamless weld
B.Spot weld
C.TIG weld
D.Arc weld
A Seamless weld
How should a boiler pressure relief valve (PRV) be set?
A 8-10 psi counterclockwise
B 12-15 psi clockwise
C 10-12 psi clockwise
D 15-18 psi counterclockwise
B
Before turning on a system, what should you do if the filter media is plugged?
A. Flush the filter with water
B. Replace the carbon filter
C. Isolate both sides of the filter and replace it
D. Backflush the system
C Isolate both sides of the filter and replace it
What makes noise when you tap it to inspect for cracks?
A Copper
B PVC
C Cast iron
D Galvanized steel
C
What are key components of a water heater?
A. Shut-off valve, union, and drip leg
B. Relief valve, union, and flex line
C. Thermostat, union, and flex pipe
D. Heating element, drip leg, and relief valve
A. Shut-off valve, union, and drip leg
How do you connect copper under a building?
Solder
Braze
Compression fitting
Press fit
Answer: Braze
Polyethylene pipe is only to be used on what system?
Fire sprinkler systems
Water supply piping
Drainage systems
Steam heating systems
Answer: Water supply piping
What does a high-limit switch do?
A. Opens the pressure valve
B. Shuts off gas
C. Triggers a warning alarm
D. Turns off the water supply
B shuts off the gas
Before wrenching how many hand turns
A. 2 1/2
B. 3 1/2
C. 4
C 2
B 3 1/2
Threads per inch 3/4 and 1/2
14
Threads per inch 1” - 2”
11.5
Where do you install milagated radon pipe
A.outside above ground
B. Under slab inside to outside of residence
C. Not permitted to be used
B
What is the max drainage temp
75 degrees
What is the max drainage temp for showers
49 degrees
If water is not filtered enough, what would you do?
A) Replace the filter
B) Install a sediment trap
C) Check for incorrect backwash cycle
D) Add a softener
C
What is the required distance of soil from the edge of a trench?
• A) 2 ft (0.6 m)
• B) 3 ft (1 m)
• C) 4 ft (1.2 m)
• D) 5 ft (1.5 m)
B
Ladder ratio
4:1
What should be done annually for a solar heating system?
A) Inspect the solar panels for damage
B) Check antifreeze level
C) Clean the system pipes
D) Replace the pump
B
For gas piping, when the pipe size exceeds 2 ½ inches, what type of connection is used?
• A) Threaded
• B) Welded
• C) Flanged
• D) Press-fit
B
Where should the cleanout for an interior leader storm be located according to regulation 2.4.7.1(3)?
• A) At the top of the leader
• B) Less than 1 meter from the bottom
• C) Less than 3 meters from the bottom
• D) At the midpoint of the leader
C 2.4.7.1 (3)
What are the correct steps for preparing and assembling bell and spigot joints?
• A) Cut, sand, glue, tighten
• B) Cut, bevel, lube, pull together
• C) Cut, weld, seal, align
• D) Bevel, glue, align, seal
B
What is the minimum trap arm length for an unvented floor drain (F.D.)?
• A) 12 inches (300 mm)
• B) 18 inches (450 mm)
• C) 24 inches (600 mm)
• D) 30 inches (750 mm)
B 18inches 450mm
What is the maximum height allowed for a manhole taper according to 2.4.7.3(3)?
• A) 0.5 m
• B) 0.75 m
• C) 1 m
• D) 1.5 m
D 1.5m
What should be checked if a centrifugal pump experiences low pressure?
• A) Inspect the impeller for damage
• B) Open the bypass valve
• C) Check the throttle valve
• D) Replace the motor
C or needle valve
What is the maximum allowable water pressure for a dwelling?
• A) 60 PSI
• B) 70 PSI
• C) 80 PSI
• D) 90 PSI
C 80psi
How is effluent flow controlled through a manhole?
• A) Using filters
• B) With baffles
• C) By throttling valves
• D) With check valves
B
What are the correct colors for an air med gas label?
• A) Red and White
• B) Green and Yellow
• C) Black and White
• D) Blue and White
C
What are the correct colors for an oxygen label in med gas
• A) White and Red
• B) White and Green
• C) Green and Yellow
• D) Blue and White
(B) Green letter white background
1m = how many ft
3.28ft
What is the minimum required distance from dispersal systems to the source of drinking water, wells, or water suction lines?
• A) 15 m (50 ft)
• B) 30 m (100 ft)
• C) 45 m (150 ft)
• D) 60 m (200 ft)
B
What is the minimum required distance from a watertight subsurface treatment tank to property lines?
• A) 0.5 m (1.5 ft)
• B) 1 m (3 ft)
• C) 2 m (6.5 ft)
• D) 3 m (10 ft)
B
What is the minimum required distance from a watertight subsurface treatment tank to a non-dwelling building or structure?
• A) 0.5 m (1.5 ft)
• B) 1 m (3 ft)
• C) 2 m (6.5 ft)
• D) 3 m (10ft)
B
What is the minimum required distance from a watertight subsurface treatment tank to a utility service?
• A) 0.5 m (1.5 ft)
• B) 1 m (3 ft)
• C) 2 m (6.5 ft)
• D) 3 m (10 ft)
B
What is the temperature threshold that differentiates soldering from brazing?
• A) 600°F
• B) 700°F
• C) 840°F
• D) 900°F
C
What type of valve is used on the domestic side to mix hot and cold water for temperature control?
• A) Check Valve
• B) Pressure Reducing Valve
• C) Tempering Valve
• D) Ball Valve
C
Where must the fan be positioned in relation to the cooling coil in an HVAC system?
• A) Downstream of the cooling coil
• B) Upstream of the cooling coil
• C) Adjacent to the cooling coil
• D) Above the cooling coil
B
What is used to clean a medical gas system?
• A) Sodium Chloride (NaCl)
• B) Trisodium Phosphate (TSP)
• C) Hydrogen Peroxide (H2O2)
• D) Ammonium Hydroxide (NH4OH)
B
What is the minimum required distance from a watertight subsurface treatment tank to the source of drinking water, wells, or water suction lines?
• A) 10 m (33 ft)
• B) 15 m (50 ft)
• C) 30 m (100 ft)
• D) 45 m (150 ft)
B
What is the primary reason stainless steel pipes are commonly used in breweries?
A. They are less expensive than other materials.
B. They resist corrosion from acidic substances.
C. They are easier to install than plastic pipes.
D. They conduct heat more effectively than copper.
- They resist corrosion from acidic substances
Why is copper not recommended for use in a reverse osmosis system?
a) Copper reacts with chlorine in the water.
b) Reverse osmosis water is acidic and can corrode copper.
c) Copper cannot withstand high water pressure.
d) Copper reduces the efficiency of the filtration membranes.
B
What does “STD”
a) Standard thickness
b) Steel tubing dimension
c) Standard design
d) Short-term durability
A
How many 90’s are you allowed on a T&P
2
What is the minimum access size for a manhole?
Options:
A. 500 mm
B. 600 mm
C. 700 mm
D. 800 mm
B
How should sterilizers and drinking fountains be connected to a drainage system?
Options:
A. Directly connected
B. Indirectly connected
C. Not connected at all
D. Connected with a bypass valve
B
What type of fitting should be used to connect copper to black iron?
Options:
A. Compression fitting
B. Dielectric union
C. Threaded coupling
D. Solder joint
B
What is the minimum air gap required for backflow prevention?
Options:
A. 1 inch or 1.5 times the pipe diameter
B. 1 inch or 2 times the pipe diameter
C. 2 inches or 1.5 times the pipe diameter
D. 2 inches or 3 times the pipe diameter
B
What is the minimum air break required for drainage systems?
Options:
A. 1 inch or 1.5 times the pipe diameter
B. 1 inch or equal to the pipe diameter
C. 2 inches or 1.5 times the pipe diameter
D. 2 inches or equal to the pipe diameter
B
What is the typical temperature setting for a hot water tank?
Options:
A. 50°C or 120°F
B. 60°C or 140°F
C. 70°C or 150°F
D. 80°C or 160°F
B
What is the typical temperature setting for a dishwasher?
Options:
A. 60°C (140°F)
B. 70°C (158°F)
C. 83°C (181°F)
D. 90°C (194°F)
C
What type of valve should be used for bypassing pressure reducing valves (PRVs)?
Options:
A. Ball valves
B. Gate valves
C. Globe valves
D. Butterfly valves
C
What is a likely cause of overheating in a radiant floor heating system?
Options:
A. Incorrect thermostat setting
B. Loops too close together
C. Insufficient insulation
D. Low water flow rate
B
What is the minimum nominal pipe size for medical gas systems?
Options:
A. ¼ inch
B. ½ inch
C. ¾ inch
D. 1 inch
B
Which type of copper pipe is typically used for heating systems?
Options:
A. Type K
B. Type L
C. Type M
D. Type DWV
C
Which type of copper pipe is typically used for the radiant heating portion of a system?
Options:
A. Type K
B. Type L
C. Type H
D. Type M
C
Where is the jet located in a jet pump system?
Options:
A. At the pump outlet
B. At the foot valve in the well
C. Inside the impeller housing
D. At the suction pipe in the well
B
What is the correct order of installation for a shower trim, sleeve, cartridge, and handle?
Options:
A. Sleeve, cartridge, handle, trim
B. Cartridge, sleeve, trim, handle
C. Trim, cartridge, sleeve, handle
D. Cartridge, trim, sleeve, handle
B
Where can you find information on regular maintenance for equipment?
Options:
A. Online forums
B. Manufacturer’s manual
C. Instruction labels on the equipment
D. Maintenance logs
B
What could be the cause of a sump pump continuously running?
Options:
A. A clogged discharge pipe
B. A faulty float switch
C. The pump is undersized
D. The water table is too high
B
If the distribution field in a septic system keeps backing up, what measure should you take to address the issue?
Options:
A. Install baffles in the septic tank
B. Install a backwater valve on the inlet of the distribution box
C. Install a backwater valve on the outlet of the septic tank
D. Pump out the septic tank
A
How do you test a potable water system in freezing conditions?
Options:
A. Use compressed air to pressurize the system
B. Fill the system with antifreeze solution
C. Run a low flow of water continuously
D. Wrap the pipes in insulation before testing
A
How do you test a heating system in freezing conditions?
Options:
A. Use compressed air to pressurize the system
B. Fill the system with antifreeze solution
C. Operate the system at a low temperature
D. Test the system only during warmer conditions
B
What do you do with nitrogen in med gas system
Purge med pipe and use
Bcup5 NO FLUX
Polyethylene pipe is only to be used on?
Water service with check valve
How would you combat uneven heat in uneven floor loops?
install balancing valves
What is the safety device on a power vise ?
The ground
What is the reason for reaming pipe ?
Turbulence
Why would the UV system not be effective?
Flow rate is to fast
Where do you tie in a washing machine with 36fus?
1.5 meters from stack
What tool would you use to cut 6” steel pipe?
Grinder
What should you flush on demand heaters with?
Vinegar
NEVER SADDLE A DEAD HORSE
How do you test in floor heating in freezing conditions?
Air
How do you test potable water in freezing conditions?
Air
What’s the goal of the apprenticeship?
Something about being lawful and safe while following procedures
What does a manhole smaller then 1m need if its inside a building?
Air tight
What PPE do you use for grinders?
Face shield and glasses
What protection does a factory need for a non potable substance?
RP
What was the min spacing for scuppers?
30m
Public use flush valve on urinal isn’t working?
LEVER HANDLE NOT WORKING PROPERLY
How to you install cast iron tub?
2x4 and clips and screws
Washing machines lines are turbulent what can fix that?
Hammer arrestors
How do you prepare a pipe to be propressed?
REAM OUTSIDE AND INSIDE OF PIPE ONLY
What would you check before welding dissimilar metals?
Check manufactures literature
How to you prepare black iron for grooving?
CUT,REAM,GROOVE, LUBE JOINTS, INSTALL VIC CLAMP
Where do you install a basebord?
Exterior wall under window
How can you tell/test if UV light is working?
Bacteria culture test
How do you test glycol as a liquid?
Refractometer
How do you connect plastic pipe to steel?
Plastic MIP into steel FIP
How do you tighten MJ bands?
Torque wrench
Septic field is plugged why?
SLUDGE LAYER BUILT UP TOO MUCH
What is harmful to septic tanks?
Garburetors
If the neutralizer is depleted and clogged what will you do?
REPLACE NEUTRALIZER
Would would be the cause of a boiler that is short cycling?
Circulator is working.
Answer I put was PLUGGED SUCTION DIFFUSER
What is pressure relief valve set to?
Pressure relief valve is set at 30 psi to accommodate the system
Thread chasers are set at ?
12-15 degrees
1/4 bend = ???
90
1/16 bend = ??
22.5
1/8 bend = ???
45
Only By-pass PRV’s with what valves ?
Globe valves
Colour codings markings on radiant panel heating is ??
Blue and red
What needs to be confirmed when working with drain cleaner ?
Confirm sds when working with a new drain cleaner
type K copper is better used in underground piping because?
Wall thickness
What needs to be changed if a sink is still leaking
Change the o ring in a sink if the sink is leaking
Why is type K copper better used in underground piping?
Because of wall thickness.
What should you do if a sink is leaking?
Change the o ring in the sink.
What is a transition coupling used for?
When joining copper to plastic pipe.
What minerals are found in a water softener?
Iron, magnesium, and calcium.
What is the order of materials in a water softener from bottom to top?
Coarse gravel, fine gravel, Zeolites.
What is needed at all low points of a heating system?
A low point DRAIN.
What is needed at all high points of a heating system?
An AIR VENT.
What should you do after an air test in a heating system?
Bleed all air vents.
What is the minimum size for a floor drain?
2 inches.
What is the minimum size for access to a manhole?
600mm.
How should sterilizers and drinking fountains be connected?
They should be indirectly connected.
What could cause a toilet to shoot water out of the bowl?
A faulty flapper.
What should be used to connect copper to black iron?
A dielectric union.
What type of pipe is used for high pressure applications?
Schedule 80 pipe.
What does STD stand for in relation to pipes?
Wall thickness of steel pipe.
Where are seismic components found?
In the mechanical specifications.
What is the rough in center measurement for a lavatory?
12 inches.
How should wall hung toilets be supported?
By carriers.
What is used to keep the relief valve closed in a backflow assembly?
Downstream pressure.
What protects PEX pipe from direct sunlight?
It is protected by its material.
What tool is used to cut cast iron?
Snap cutters.
Is copper recommended in a reverse osmosis system?
No, it is not recommended.
Where are stainless steel pipes commonly found?
In breweries.
describe difference between laminar and
turbulent flow
RSOS
Laminar Flow is the type of flow that is very smooth
Turbulent Flow is unpredictable and highly engergetic
describe how velocity and friction loss
affects flow characteristics
RSOS
Velocity affects the type and rate of fluid flow, while friction loss causes pressure drops and energy loss, influencing flow efficiency and system design.
describe procedures for selecting and
sizing auxiliary equipment
An invert elevation is taken at:
Select one:
a.
the bottom outside of the pipe
b.
the top outside of the pipe
c.
the bottom inside of the pipe
d.
the top inside of the pipe
C
worn, damaged or defective PPE and
safety equipment are tagged, reported to
supervisor and removed from service
according to specifications
identify LOTO equipment, and describe
their characteristics and applications
LOTO equipment, like padlocks, tags, and lockout devices, isolate energy sources to prevent accidental operation during maintenance.
identify types of ladders, and describe
their characteristics, applications and
limitations
Ladders include step ladders, extension ladders, platform ladders, and telescoping ladders, each with specific uses, weight limits, and height capacities, but limited by stability, surface requirements, and proper angle setup.
explain sling angles when preparing for
hoisting and lifting operation
Sling angles in hoisting refer to the angle between the sling and the horizontal. Smaller angles increase tension on the sling, reducing its load capacity and potentially causing failure. To ensure safety, use wider angles (ideally above 45°) and calculate load tensions based on the sling angle.
worn, damaged or defective soldering
and brazing equipment is identified,
tagged, reported to supervisor and
replaced
identify soldering and brazing
consumables
Soldering consumables: solder wire, flux, and solder paste.
Brazing consumables: filler metals, flux, and brazing rods.
metric/imperial conversions are performed
Metric/imperial conversions are performed by using fixed conversion factors. For example:
Length: 1 inch = 25.4 mm, 1 meter = 3.2808 feet.
Mass: 1 pound = 0.4536 kg, 1 kilogram = 2.2046 pounds.
Volume: 1 gallon (US) = 3.785 liters, 1 liter = 0.2642 gallons (US).
Use formulas or conversion charts for accurate results.
describe metric/imperial systems and
conversions
The metric system uses units like meters, liters, and kilograms, based on multiples of 10.
The imperial system uses feet, gallons, and pounds, based on varying factors.
identify systems and equipment that
require commissioning within plumbing
Systems and equipment that require commissioning in plumbing include:
Water supply systems
Drainage and vent systems
Backflow prevention devices
Hot water systems
Pump systems
Fire suppression systems
Plumbing fixtures
Commissioning ensures proper operation and compliance.
describe procedures to commission
systems
Commissioning procedures include:
Inspection: Verify installation against design specifications.
Testing: Check functionality, pressure, and flow rates.
Calibration: Adjust equipment for optimal performance.
Documentation: Record test results and settings.
Training: Educate staff on system operation and maintenance.
Final Approval: Confirm system meets standards and is operational.
