Plumber 3 Cross Connection Control Practice Test

These questions are part of the practice quiz. Start practicing

• What happens if line pressure is not written on the form?
• If SOV2 is not leaking and the relief still won't open during RP testing, what is the next suspected component?
• Which device is commonly used on a hose bib to prevent backflow?
• Which device requires RPBA in-plant or premise for protection?
• In an RP sequence, what is the function of check 2?
• RPDA/DCDA protection adds what extra feature beyond RP/DCVA?
• RP check-1 actual drop is too low. What is a likely component cause?
• Which condition best describes a torn RP diaphragm?
• Dirty / muddy water is which hazard class?
• In booster pump configurations, what does siphonage upstream refer to?
• Which statement describes a stabilized / steady-state gauge reading per CSA B64.10.1 Annex A?
• What is a jumper, and is it allowed?
• A heating boiler or pressure vessel that contains treatment chemicals is typically associated with which type of backflow?
• What does RAG stand for in backflow terminology?
• How many assessment factors are listed?
• Can one physical connection produce either backpressure or back-syphonage?
• True or false: an air gap cannot be bypassed.
• Why is an engineer's liability defence hard?
• During RP testing, what is the purpose of the TV1-to-TV4 jumper?
• What does RPBA stand for in backflow terminology?
• When can an honest error of judgment still be negligence?
• 1 psi equals how many kPa?
• Sight-tube conversion for 1 psi equals how many inches of water?
• DCVA check-1 hookup?
• Define backflow.
• Which factor describes how dangerous a hazard is?
• What is the required height for PVB / SRPVB above the flood level rim or the highest downstream piping?
• In an RP backflow prevention sequence, what does check 1 do?
• What is the critical level on a vacuum breaker?
• Who must approve daylight drain installations before work begins?
• DuC stands for which backflow device?
• Which statement best describes back-syphonage?
• Which statement about bypass around a backflow preventer is correct?
• What is the required front clearance in an enclosure for a backflow device (excluding small units in removable boxes)?
• What is the purpose of a cross connection control program?
• In the designation DCAPC, what does the 'C' stand for?
• Who is the water purveyor?
• The jumper, swivel, change-over, and removable section are classed as what?
• Where should the PVB check hose be connected and what action drains?
• What is the minimum air-gap dimension for backflow prevention?
• What is the minimum clearance below a boxed DCVA?
• Which device includes two independent loaded checks, two shut-offs, and four test cocks?
• What is the purpose of the air gap in the RP test?
• During a PVB check pass, which valve remains closed?
• Steam is which hazard class?
• What is the clearance behind a typical assembly?
• Who has direct responsibility to supply potable water to a premise?
• After identifying the backflow type, which is the next consideration in the selection process?
• During high hydrant flow, what happens in the main line?
• Hose-bib with no hose attached — actual or potential? What type of backflow if a hose is added and the main breaks?
• For a PVB air-inlet needle held at 0, which condition is most likely?
• When a DCVA is installed in a pit, how should the test cocks be oriented?
• During high hydrant flow, which phenomenon describes the effect on the system main?
• DCVA pass criterion for DCVA check-1 uses which measurement to confirm proper function?
• Which device is commonly used for beverage carbonators?
• How tall is a barometric loop and what does it stop?
• Residential hose-bib hazard and protection requires which hazard level and fixture protection?
• RP relief discharge rule?
• What is the minimum clearance below an RP centre-line or relief, given the relief opening above grade is at least 300 mm (12 in)?
• When a bypass around a backflow preventer is installed, what level of protection must the bypass provide?
• For an air gap near a wall within 3 pipe diameters, what change to the gap is required?
• Which of the following premises is listed as High hazard: hospital, plating plant, marina, or car wash?
• Lawn irrigation with chemical injection requires which hazard level and protection?
• RP — What components are included in its assembly?
• True or false: NBC / NPC rules only apply in provinces that adopted them.
• A cross connection control program is designed to stop non-potable water from re-entering the public water supply.
• What are the requirements for daylight drain from a semi-buried pit?
• Which factor primarily drives the degree of hazard?
• What is the flood level rim?
• Can a device replace an approved cross-connection assembly?
• Which designation indicates the Dual Check with Atmospheric Port without specifying a carbonator in the name?
• What is the hold time required on every check test?
• Which device stops back-siphonage only and is not designed for continuous pressure?
• If the RP test indicates a leak after a downstream faucet is flushed, what is the recommended first diagnostic step?
• Which device uses a bleed vent in place of the second test cock?
• RP: you crack the low-side more than ¼ turn and the relief never opens. First check?
• What does RP stand for in backflow terminology?
• What does DCVA stand for in backflow prevention?
• Which scenario is described as a moderate premise hazard?
• What is backpressure?
• Ice maker hazard and protection requires what level and protection?
• When a DCVA is installed in a pit, what must be done with the test cocks?
• What does purple pipe mean?
• Garden sprayer / aspirator — type of backflow?
• A tall building over 9.4 m (30 ft) is classified as which premise hazard?
• For a PVB check pass, what condition is required after the body drains through TV2?
• The centre-line height band for PVB / SRPVB / DCVA / RP is specified as which range above the floor?
• Moderate hazard is associated with which description?
• PVB stops what and is continuous-pressure capable?
• What does a falling sight-tube column mean?
• Approved air gap vs registered air gap?
• True or false: once a bylaw exists, everyone is deemed to know it.
• Fertilizer injector is which class of hazard?
• Do temporary hydrant services require their own approved backflow preventer?
• What is the front clearance requirement for typical enclosures?
• What holds an RP relief valve closed?
• What is back-syphonage?
• Where is the PVB air-inlet hose connected, and how should the gauge be placed?
• What is a stabilized / steady-state gauge reading?
• Why might a PVB spit when SOV1 is opened for the first time?
• What does AG stand for in backflow terminology?
• Who has primary provincial responsibility for public health?
• Submerged inlet — actual or potential? Type of backflow?
• Which device is protected by DCVA as its backflow protection method?
• How should a spitting RP relief be interpreted?
• Is compressed-air blowout allowed on a PVB / SRPVB system?
• Which of the following is a listed cause of RP dumping when you arrive?
• What lawyer tactic names a pile of people after a backflow incident?
• Define RP buffer.
• In the RP test cocks sequence, which valve is closed last?
• In a PVB air-inlet pass, when does the valve open?
• Barometric loop stops which type of backflow?
• Which device requires RPBA for protection with chemical injection?
• An air gap stops which forms of backflow, what is the associated hazard level, and what is the recommended field-test approach?
• SRPVB (SVBA) refers to which type of backflow device?
• DCAP / DCAPC abbreviations refer to which backflow device, with the 'C' indicating carbonator?
• What is the proper flush order for RP test cocks?
• In an RP backflow sequence, what happens when the zone pressure climbs above the allowed margin below inlet?
• RP restore order?
• RP relief will not open when you crack the low-side. What is the first suspect?
• Which abbreviation refers to a hose connection vacuum breaker?
• Why can an RP relief spit on water hammer?
• Which premise hazard level is associated with a sewage plant or sewage pump station?
• RP hose hookup?
• Bidet requires which hazard level and fixture protection?
• Actual vs potential cross connection?
• Is an extension ladder acceptable access for annual testing?
• What are typical uses of DCAP and DCAPC?
• Industrial hose-bib hazard and extra isolation is required to what level and protection?
• What does AG stand for in backflow terminology?
• May an RP be installed in a pit?
• Which statement is true about air gap allowances near walls and corners?
• The Ministry of Health holds primary provincial responsibility for public health.
• In a PVB sequence, what happens when the inlet pressure falls and the air-inlet is loaded?
• Should a potential cross-connection be treated the same as an actual cross-connection?
• In a PVB air-inlet test, opening the bleed more than a quarter turn indicates what?
• Chemical injector / fertilizer pump — type of backflow? How many extra CCs on that typical figure?
• In a booster pump setup, what are the two backflow paths?
• May you leave a spool in the line while parts are on order?
• What is the purpose of RPDA/DCDA detector assemblies?
• What is the term used for balancing cost against public safety?
• CAN/CSA B64.10.1 is the standard used for testing backflow preventers.
• Which water-borne disease is named by the self-test?
• The notes warn against searching for which air-inlet value?
• What is the first step in selecting a backflow prevention device?
• Fire sprinkler, no additives requires which hazard level and protection?
• The premise owner is responsible to maintain and test preventers on private property.
• What distinguishes an assembly from a device in cross-connection control?
• If closing SOV2 on an RP causes the relief to dump immediately, what is the first suspect?
• The sight-tube conversion for 1 psi relates to which physical quantity?
• When opening the RP bypass, a small needle dip occurs. How should this be interpreted?
• Which device has the highest hazard described as severe with RPBA?
• In an RP sequence, what does the relief do at no-flow?
• AVB is the abbreviation for which backflow device?
• AVB — what does it stop and what are its orientation and pressure limits?
• Which device creates a physical separation to prevent backsiphonage?
• What standard does Building Code Part 7 use for testing backflow preventers?
• What is the centre-line height band for PVB / SRPVB / DCVA / RP above the floor?
• Are on-site surveys needed if CSA tables exist?
• Which option represents the Spill-Resistant backflow device?
• What is the recommended AVB height above flood level rim?
• Severe hazard is also called which term?
• Where is HCVB/HFVB installed and what are its limitations?
• If TV2 keeps running during the check test, what is the most likely fault?
• What height above the flood level rim is the AVB recommended to be, according to the course guidance?
• During DCVA testing, if TV3 runs while testing check 1, what is the first suspect?
• Which device provides the highest level of protection against backflow in hazardous conditions?
• True or false: almost anything but potable is some degree of hazard.
• DCVA pass number for each check?
• Bypass around a backflow preventer requires what level of protection?
• In backflow prevention terminology, what does the abbreviation DCVA stand for?
• What is the minimum hot-water temperature rating required for PVB / DCVA / RP installations?
• Which matters more in assessment: toxicity or probability?
• What is the correct order of the four RP test requirements?
• What is the primary purpose of the second check in an RP backflow sequence?
• Which item is not one of the four assessment factors?
• Continuous vs non-continuous pressure?
• According to the notes, 1 psid equals how many kilopascals?
• Trap primer requires which protection mechanism?
• Which assembly stops both BP and BS and is rated for moderate/minor hazard?
• RP relief discharge method?
• In the RP 2 psid rule, at what point must the relief open?
• Fire sprinkler with chemical additives requires what hazard level and protection?
• Which method of application protects the city main?
• What is the most common reason DCVA checks leak?
• HCVB / HFVB abbreviations refer to which type of backflow device used on hoses?
• Bypass around a backflow preventer must have what level of protection?
• What does a registered air gap imply in terms of inspection?
• Contamination vs pollution?
• Which factor describes how reliable the preventer is?
• 1 inch equals how many millimeters?
• What does purple pipe indicate in labeling schemes?
• An RP relief opens too low. Which component issue is most likely?
• RP premise isolation is often considered for which backflow category?
• Severe hazard means?
• During a DCVA test, if the sight tube shows the water receding, what is the issue?
• Liability to an individual arises under what kind of law?
• Domestic hot-water boiler, no chemicals requires which hazard and protection?
• Is downstream shut-off allowed on an AVB?
• What does BP+BS stand for?
• What hazard level is associated with beverage vending or carbonator fixtures?
• Who must maintain and test preventers on private property?
• Which backflow preventer screws onto a hose bib?
• Which scenario is described as a moderate premise hazard?
• A fire-department pumper or ship-board pump is typically associated with which type of backflow?
• Back-syphonage is caused by what condition?
• Which device is not rated for continuous pressure over 12 hours within a 24-hour period?
• DCVA check-2 hookup?
• Which statement best describes the AVB sequence in one line?
• Minor hazard means?
• After completing an RP relief test using the TV jumper, what is the recommended action?
• Define a cross connection.
• Under what conditions can a DCVA be installed in a pit?
• Air gap vs air break?
• What hazard does a cross connection pose?
• In backflow prevention devices, what does PVB stand for?
• Which factor relates to how likely a hazard will occur?
• What is used water?
• When installing a vacuum breaker, where should the submergence mark be placed relative to the flood level rim?
• DCVA stops backflow and is intended for what hazard level?
• In a DCVA context, a bleed-off assembly is used to compensate for which condition?
• DuC is used for what type of hazard and service?
• Which components make an assembly field-testable?
• If the RP relief spits intermittently before you close SOV2, what is the most likely cause?
• Which device uses air gap protection?
• True or false: willfully causing a cross connection makes you liable for damages.
• What best describes the TV1-to-TV4 jumper on an RP?
• The water purveyor is directly responsible to supply potable water to a premise.
• An air gap near a corner within 4 pipe diameters of two walls requires what adjustment?
• What is an auxiliary water supply?
• Unknown substance — what hazard do you assume?
• Apparent vs actual pressure drop on an RP?
• What is the best protection for the people inside the building?
• For the DCVA check-1 hookup, which action should you take first?
• Lawn irrigation, no chemicals requires which protection?
• During RP restoration, what is the status of SOV1 before proceeding?
• Which set lists the four health-hazard classes?
• Which method of application protects occupants?
• Degreaser — CSA vs this manual? Which statement best reflects severity and AHJ influence?
• Name the big four assemblies and what each stops.
• Not for 12-hour pressure, which statement best describes the AVB/flow relationship?
• After any repair, what must you do?
• What is an air gap defined as?
• According to CSA, if the water line is the electrical ground, what must you do before pulling the valve?
• Moderate hazard means?
• Minor hazard is described by which phrase?
• Which backflow device abbreviation expands to Double Check Valve Assembly?
• Which devices require a hot-water rating above 43 °C?
• What are the three CSA degrees of hazard?
• SRPVB vs PVB — how do they differ?
• What tool is used to compensate a small leaking SOV1 on a DCVA?
• If you observe SOV1 not closed or leaking during a DCVA check, which action is most appropriate?
• Non-continuous pressure is defined as not exceeding how many hours in 24 hours?
• Premise isolation vs fixture / in-plant isolation?