ASSE 5140 Fire Protection System Cross-Connection Inspector

ASSE 5140 covers cross-connection control for which type of system?

• ADomestic hot water heaters only
• BWater-based fire protection systems
• CClean agent suppression systems
• DSanitary sewer venting

Which NFPA standard is the primary installation standard for sprinkler systems?

• ANFPA 13
• BNFPA 25
• CNFPA 72
• DNFPA 291

NFPA 25 is focused on:

• AInstallation of new sprinkler systems
• BInspection, testing, and maintenance of water-based fire protection systems
• CAlarm initiating devices
• DClean agent systems

A wet-pipe sprinkler system is characterized by:

• ASprinklers connected to piping filled with water under pressure, ready to flow upon fusing
• BDry air under pressure holding water behind a dry-pipe valve
• CA manually operated deluge valve
• DFoam premix in the pipes

A dry-pipe sprinkler system:

• AAlways has water behind the dry-pipe valve under pressure
• BHas air or nitrogen pressure above the dry-pipe valve that is released when a sprinkler f…
• CIs only used for residential occupancies
• DRequires foam concentrate to operate

A preaction sprinkler system typically requires:

• AOnly heat from a fused sprinkler to flow water
• BBoth detection and a fused sprinkler to flow water
• CContinuous water flow
• DPremixed foam

A deluge sprinkler system is characterized by:

• AClosed sprinkler heads and air pressure
• BOpen (non-fusible) sprinkler heads and a deluge valve that admits water to the whole syst…
• CA single sprinkler head firing
• DA foam tank

Foam-water sprinkler systems introduce foam concentrate into the water stream. This makes the water:

• AA non-hazard under NFPA
• BA health hazard for cross-connection purposes, typically requiring an RPDA on the fire se…
• CPotable
• DExempt from cross-connection rules

On a fire service with no chemical additives and no health hazard, the correct backflow assembly is typically:

• APVB
• BSVB
• CDCDA (ASSE 1048)
• DDual check

An RPDA (ASSE 1047) is required on a fire service when:

• AThe service has no additives and is non-health
• BAntifreeze, foam concentrate, or other chemicals make the fire water a health hazard
• CThe service is residential only
• DThe service is under 50 psi

A fire service backflow assembly must be:

• AListed for fire protection service (typically FM approved or UL listed)
• BAny commercial RP
• CA residential dual check
• DA domestic hot water heater relief device

NFPA 25 requires periodic forward flow testing on fire service backflow preventers. The purpose is to:

• AVerify the assembly can still pass the system demand flow
• BReplace the backflow preventer
• CMeasure backpressure only
• DTest the alarm panel

The section of NFPA 13 that addresses backflow preventers and required listing is commonly:

• ASection 8.16 (general location and connection requirements including backflow preventers)
• BSection 3.3
• CSection 22.1
• DAnnex D only

Antifreeze sprinkler systems are permitted to use which antifreezes under current NFPA rules?

• AEthylene glycol at high concentration
• BGlycerin or propylene glycol at listed concentrations, with system type and location rest…
• CMethanol in any system
• DOnly plain water

A fire pump installed downstream of a fire service backflow assembly primarily affects the inspector because:

• AThe pump generates additional pressure drop that the assembly must accommodate, and the a…
• BThe pump has no effect on the backflow assembly
• CThe pump replaces the backflow assembly
• DThe pump is prohibited with a backflow assembly

Which component on a fire service DCDA detects unauthorized water use or small leaks?

• AThe bypass meter
• BThe main line check
• CThe downstream shutoff
• DThe FDC

A fire department connection (FDC) allows:

• AFirefighters to pump water into the sprinkler system to support or supplement the supply
• BThe fire department to draw water out of the system
• CThe sprinkler system to recirculate
• DDomestic water to enter the fire system

A combined domestic/fire service with a shared supply upstream requires:

• ANo protection because the combined service is under one meter
• BA listed fire-service backflow assembly on the fire branch plus appropriate containment f…
• COnly a PVB
• DA single domestic RP for both

Which item is typically inspected on every periodic NFPA 25 inspection of a fire service backflow assembly?

• AVisual condition of shutoffs, presence of test cocks, signage, accessibility, and absence…
• BThe building's parking lot
• CThe elevator machine room
• DThe boiler flue

The main drain test on a sprinkler system measures:

• AThe residual pressure available during flow to evaluate supply health compared with histo…
• BThe elevation of the sprinkler heads
• CThe fire department response time
• DThe weight of the dry-pipe valve

An inspector identifies an FM-approved DCDA installed on a fire service that now includes antifreeze. Correct action:

• ALeave the DCDA in place
• BRequire replacement with a fire-service RPDA because the antifreeze makes the water a hea…
• CInstall a thermal expansion tank
• DRemove the antifreeze system and remove the DCDA

A jockey pump is:

• AA small pump used to maintain system pressure in a fire protection system without startin…
• BThe primary fire pump
• CA foam proportioner
• DA deluge valve

Trip testing on a dry-pipe system verifies:

• AThat the dry-pipe valve opens properly when air pressure drops, admitting water to the sy…
• BThe condition of the fire alarm
• CThe elevation of the fire pump
• DThe hydraulic gradient of the service

Which of the following is a common hazard classification for an office building served by a wet-pipe sprinkler with no additives?

• AHealth hazard
• BNon-health hazard (generally)
• CNo hazard; no cross-connection protection required
• DClassified as foam-water

Which assembly type is prohibited on a fire service?

• APVB (ASSE 1020) due to backpressure and non-fire-service listing
• BDCDA
• CRPDA
• DFire-service RP

Which of the following best describes the typical annual NFPA 25 test for a fire-service backflow preventer?

• AA forward flow test at system demand flow plus a backflow performance test of the assembly
• BA visual inspection only
• COnly the main drain test
• DNo test required annually

A supervisory switch on a fire service shutoff valve does what?

• AIndicates whether the valve is open or closed and transmits that signal to the fire alarm…
• BAdjusts water pressure
• CPumps water to upper floors
• DMeters flow

An inspector observes that the fire service backflow preventer is installed in a buried vault with no drainage. The condition is:

• AAcceptable as long as the assembly is the correct type
• BA serious installation deficiency because the relief discharge can submerge the vent and…
• CAcceptable for DCDA assemblies only
• DAcceptable if the vault is locked

Which NFPA standard addresses hydrant flow testing?

• ANFPA 13
• BNFPA 291
• CNFPA 101
• DNFPA 99

A fire service RPDA is essentially:

• AAn RP main line with a parallel bypass RP and bypass meter
• BA single check valve
• CA deluge valve
• DA foam proportioner

When selecting a fire-service assembly for a multi-story building with high static head from upper-floor sprinklers:

• AIgnore the elevation
• BAccount for the added backpressure from elevation (0.433 psi per foot of height) when siz…
• CUse a PVB because it handles backpressure
• DReduce the sprinkler coverage

An inspector finds that a fire service DCDA's upstream OS&Y shutoff valve is partially closed. The correct response is:

• ALeave it partially closed to save wear
• BOpen it fully, verify supervisory switch status, and document the impairment and its reso…
• CClose it completely
• DInstall a bypass line

Which type of sprinkler system is most affected by a backflow preventer's pressure loss in hydraulic calculations?

• AAll types; the pressure loss is part of the hydraulic calculation regardless of system ty…
• BOnly wet-pipe
• COnly preaction
• DOnly deluge

An inspector is evaluating a standpipe system with a fire service. Standpipes are:

• APiping systems with hose connections for manual firefighting use inside a building
• BThe same as dry sprinklers
• CPart of an FDC only
• DResidential fire extinguishers

In NFPA 25, the typical frequency for a forward flow test of a fire-service backflow preventer is:

• AEvery 5 minutes
• BAnnual (at system demand), with full-flow testing at the intervals specified in NFPA 25
• CEvery 10 years
• DNever

Which is a typical fire sprinkler impairment procedure step?

• ANotifying the AHJ, insurance carrier, and facility occupants; posting an impairment tag;…
• BTurning off the fire alarm
• CPowering down the building
• DLocking the front doors

A fire service with sprinklers and a subsequent chemical-feed foam concentrate injection for the building's protected area requires:

• ARPDA on the fire service plus appropriate internal isolation at the foam concentrate tank
• BA standard DC on the fire service
• CPVB at the FDC
• DNothing beyond what sprinklers alone need

The FM Global approval (or UL listing) for a fire-service backflow assembly verifies:

• AThat the assembly has been tested for fire-protection-service use, including flow capacit…
• BThat the assembly is UL-listed for domestic hot water only
• CThat the device is approved for potable water mains only
• DThat the device is approved only for food-service use

Which fire service configuration is MOST likely to need an RP (not RPDA) on the main line?

• AA fire service where a bypass meter is not required by local policy and a health hazard e…
• BAny residential service
• CAny service under 100 psi
• DAny service with a jockey pump

A fire service that sees occasional flushing and hydrant testing still requires:

• AA bypass so flushing water bypasses the backflow preventer
• BThe backflow preventer in the service — flushing water must flow through the assembly bec…
• CA second FDC
• DRemoval of the shutoff valves

A fire service backflow assembly test in the winter requires the inspector to:

• ASkip the test due to cold
• BPlan for freeze protection during the test — warm wraps, heated equipment, and attention…
• CHeat the device with a torch
• DRemove insulation during the test

Which is a common alarm initiating device on a sprinkler system?

• AWaterflow alarm (e.g., vane-type waterflow switch)
• BHousehold doorbell
• CBuilding intercom
• DHVAC condensate sensor

For a high-rise building's combined standpipe and sprinkler system with a fire pump, the backflow assembly is typically located:

• AOn the suction side of the fire pump, on the dedicated fire service
• BAbove the highest sprinkler
• CInside the FDC
• DAt each hose station

Which fire system type is most sensitive to water freezing in the piping?

• AWet-pipe system in an unheated area
• BDeluge system in a heated area
• CPreaction system in a heated area
• DFoam-water system indoors

An inspector's report on a fire service backflow assembly should include at minimum:

• AAssembly ID/location, make/model/serial, size, date/time of test, values and pass/fail, t…
• BThe customer's phone number only
• CThe color of the piping only
• DNothing more than a signature

A fire-service RPDA's main-line internal checks may leak slightly over time due to:

• ADebris, sediment, elastomer aging, and cyclic pressure wear
• BPainting the exterior
• CChanging the parking lot
• DReplacing the fire alarm panel

Dry-pipe systems require a:

• AProperly sized compressor or nitrogen supply to maintain air pressure above the dry-pipe…
• BFoam proportioner
• CPreaction detector
• DDeluge valve