ASSE 6040 Medical Gas Maintenance Personnel

Which code is the primary U.S. standard governing maintenance of medical gas and vacuum systems in healthcare facilities?

• ANFPA 70 National Electrical Code
• BNFPA 99 Health Care Facilities Code
• CNFPA 54 National Fuel Gas Code
• DASME B31.9 Building Services Piping

What is the primary role of an ASSE 6040 Medical Gas Maintenance Personnel?

• ABraze new medical gas piping at construction sites
• BPerform the independent final verification before clinical service
• CMaintain, service, and repair medical gas and vacuum systems already in clinical service
• DSign AHJ acceptance after final verification

An ASSE 6040 holder alone is NOT authorized to:

• APerform routine alarm testing
• BChange source equipment filters
• CBraze repair joints on medical gas piping
• DTest zone valves

The most-tested re-verification rule for ASSE 6040 maintenance personnel is:

• ARoutine filter changes require ASSE 6030 re-verification
• BAny work that breaches the medical gas piping requires re-verification by an independent…
• CRe-verification is never required after maintenance
• DRe-verification is only required every 5 years

Per NFPA 99, master alarms must annunciate at a minimum of how many separate locations?

• A1
• B2
• C3
• DEvery nursing station

Area alarms monitor:

• ASource liquid level
• BPressure of the gas line serving a specific patient-care area
• CAtmospheric oxygen in the room
• DCombustible gas in the facility

Before isolating a zone valve for maintenance, the ASSE 6040 maintenance person should:

• AClose the valve and start work immediately
• BNotify clinical staff in the affected area, post temporary signage, and coordinate altern…
• CDisable the alarm system to prevent nuisance alarms
• DSkip notification because maintenance is routine

Lockout/tagout on medical gas valves is intended to:

• APrevent unintended re-opening during maintenance
• BPrevent patients from operating valves
• CDocument warranty repairs
• DSave energy

Per NFPA 99 / CGA C-9, which color identifies medical oxygen piping?

• AYellow
• BGreen
• CBlue
• DBlack

Which color identifies medical air piping under CGA C-9?

• AYellow
• BGreen
• CWhite
• DGray

Which color identifies medical vacuum piping under CGA C-9?

• ABlack
• BWhite
• CBrown
• DGreen

Which color identifies nitrogen NF under CGA C-9?

• ABlack
• BYellow
• CBrown
• DGray

Which color identifies nitrous oxide piping under CGA C-9?

• ABlue
• BGreen
• CYellow
• DBrown

Which color identifies carbon dioxide piping under CGA C-9?

• AGray
• BYellow
• CBlack
• DBrown

Which color identifies helium piping under CGA C-9?

• ABrown
• BWhite
• CGreen
• DGray

Per NFPA 99, the maximum allowable dew point for medical air is:

• A+32°F at 50 psig
• B0°F at 50 psig
• C-4°F at 50 psig
• D-40°F at 50 psig

Per NFPA 99, the maximum allowable carbon monoxide concentration in medical air is:

• A2 ppm
• B10 ppm
• C25 ppm
• D50 ppm

Per NFPA 99, the maximum allowable carbon dioxide concentration in medical air is:

• A100 ppm
• B500 ppm
• C1000 ppm
• D5000 ppm

ASSE 6040 certification is valid for:

• A1 year
• B3 years
• C5 years
• DLifetime

Minimum classroom training required to sit for the ASSE 6040 exam is:

• A8 hours
• B16 hours
• C24 hours
• D32 hours

Documented practical experience required to sit for the ASSE 6040 exam is at least:

• A1 year of maintenance or testing experience with medical gas and vacuum systems
• B4 years of piping work
• C2 years of inspection experience
• DNo experience required

The ASSE 6040 exam is typically:

• AA 100-question open-book online exam with 70 percent passing
• BA 200-question closed-book paper exam
• CAn oral exam only
• DA practical exam only

ASSE 6040 maintenance work that breaches the piping (e.g., a brazed repair joint) requires:

• ASelf-verification by the maintenance person
• BRe-verification by an independent ASSE 6030 verifier before returning to patient use
• CVerbal sign-off by the facility manager
• DNo verification

Routine preventive maintenance on a medical air compressor typically includes:

• AReplacing the source piping every year
• BChanging intake filters, monitoring dew point, checking oil/lubrication per manufacturer,…
• CReplacing the entire compressor every 6 months
• DStopping the compressor and waiting for failure

Routine preventive maintenance on a medical vacuum pump typically includes:

• AChanging exhaust filters, checking oil, verifying performance at peak demand, and testing…
• BSealing the exhaust permanently
• CDisconnecting from the essential electrical system
• DReplacing the entire pump quarterly

An ASSE 6040 maintenance person is repairing a leak at a station outlet. After repair, before returning the outlet to patient use, the maintenance person should:

• AConfirm correct gas identification (cross-connection test), confirm gas purity, and verif…
• BJust restore pressure and leave
• CSend the patient to a different outlet permanently
• DDisconnect the alarm

Per NFPA 99, oxygen-related repairs in oxygen-enriched atmospheres require:

• ANo special precautions
• BAvoiding oil, grease, and hydrocarbons; using oxygen-clean tools and materials
• CUsing lots of grease for sealing
• DWearing wool clothing for insulation

Hot work (brazing, soldering, cutting with flame) on or near medical gas systems requires:

• AA hot work permit, area preparation, and an attentive fire watch
• BHot work without permits to save time
• CPermits only if the work takes more than 8 hours
• DPermits only on weekends

Per NFPA 99 maintenance principles, when filter elements on a medical air compressor are due for replacement, the maintenance person should:

• AReplace with manufacturer-specified filters, dispose of used filters properly, and log th…
• BReplace with any cheap filter on hand
• CSkip filter replacement to save cost
• DReplace only when alarms trigger

An ASSE 6040 maintenance person needs to test a master alarm. The correct procedure is to:

• ARead the alarm panel light only
• BInduce the fault condition (e.g., simulate low source pressure) and verify both audible a…
• CDisconnect power to the panel
• DAsk the facility manager if it works

Documentation of all preventive maintenance, repair, and alarm tests must be:

• AKept by the maintenance person personally
• BMaintained as part of the facility's medical gas records, available for inspection by the…
• CDiscarded after each work order
• DKept only by the equipment manufacturer

Source-of-supply changeover from primary to secondary must:

• AOccur automatically and trigger a master alarm
• BRequire manual intervention by a manager
• CRequire AHJ approval each time
• DHappen only during business hours

An ASSE 6040 maintenance person encounters a station outlet that does NOT have a gas-specific quick-connect keying — it appears to be a universal Schrader fitting. The correct response is:

• AUse it as-is
• BTake the outlet out of service, document, and arrange for replacement with a gas-specific…
• CWrap it with green tape
• DAllow only oxygen equipment to use it

When servicing a bulk liquid oxygen storage tank, the ASSE 6040 person must be aware of:

• ACryogenic burn risk from liquid oxygen and oxygen-enrichment fire risk in the area
• BOnly electrical safety
• COnly heat hazards
• DOnly humidity

An ASSE 6040 person checking the daily/weekly source equipment log finds that a master alarm has been bypassed for one week. The correct response is:

• AContinue running with the alarm bypassed
• BInvestigate why, restore the alarm, document, and notify the facility responsible authori…
• CDocument and ignore
• DPermanently disable the alarm

When changing a medical air compressor intake filter, the ASSE 6040 person should verify:

• AThe filter is OEM-specified for the compressor and medical air
• BThe cheapest filter available
• CAny HVAC filter on hand
• DNo filter is needed

Per NFPA 99 and Joint Commission, ongoing testing of medical gas alarms must be performed:

• AOnce at acceptance only
• BPeriodically per the facility's PM schedule, with results documented in the medical gas r…
• CNever after acceptance
• DOnly when an alarm fails

When an ASSE 6040 maintenance person removes and replaces a zone valve, the work:

• ADoes not breach the piping if the valve is bolted
• BBreaches the piping system and typically requires re-verification by an ASSE 6030 verifie…
• CIs exempt from any re-verification
• DRequires no documentation

An ASSE 6040 maintenance person investigating low source pressure on a Level 1 medical oxygen system should first:

• AReplace the entire piping system
• BVerify primary supply level/condition, secondary supply availability, and the cause of lo…
• CSend the patient to another floor
• DIncrease the alarm threshold to mask the problem

Per NFPA 99, the medical vacuum exhaust must terminate:

• AInside the equipment room
• BOutdoors, away from intakes and openings
• CConnected to the sanitary sewer
• DCombined with medical air intake

The maintenance person finds that a station outlet has a slight leak. Before repair, the person should:

• AClose the corresponding zone valve, post temporary signage, notify clinical staff, and pr…
• BContinue clinical use under the leak
• CPlug the outlet with tape and walk away
• DDisconnect the alarm

An ASSE 6040 maintenance person finds visible green corrosion on a brass valve body. The likely cause is:

• ANormal copper aging
• BGalvanic or dezincification corrosion of the brass valve, possibly in contact with moist…
• CAn expected indication that the valve is working
• DCosmetic; ignore

Brazing repair on medical gas piping requires the brazer to hold:

• AOnly ASSE 6040 certification
• BCurrent ASSE 6010 (Installer) certification with current brazing reverification per ASME…
• COnly a hot work permit
• DOnly an OSHA card

When working on medical oxygen systems, the maintenance person should know the fire triangle: fuel, heat, and oxidizer. In an oxygen-enriched atmosphere, the oxidizer side of the triangle is:

• AReduced
• BGreatly increased, accelerating ignition and burning
• CEliminated
• DIrrelevant

The maintenance person performing a planned isolation of a zone for valve replacement should:

• ACoordinate the outage in advance and document the duration and impact
• BTake the zone out without notice
• CPermanently abandon the zone
• DCombine the work with another emergency

Per NFPA 99, alarm panels must indicate BOTH:

• AAudible and visual signals
• BAudible and tactile signals
• CVisual and text-message signals
• DManual and automatic signals

When isolating a section of medical gas piping for maintenance, the maintenance person must verify:

• AZero pressure downstream of the isolation valve before opening the line
• BPressure remains at working level before opening
• CNothing — just open the line
• DUse water to check for pressure