Med Gas Pre Test

Pregunta 1 de 73

1

How many egresses (exits) gates are required for outdoor enclosures containing medical gas supply systems?

Selecciona una de las siguientes respuestas posibles:

1
2
3
NFPA 99 does not state a requirement

Explicación

Pregunta 2 de 73

1

A positive pressure supply system has duplex line regulators piped in parallel. Which of these is NOT a requirement for the regulators?

Selecciona una de las siguientes respuestas posibles:

Constructed of any materials deemed suitable by the manufacturer for the service.
Each regulator sized for 110 percent of peak calculated demand
Isolation or check valves on the patient side of the regulators
Isolation valves on the source side of each regulator

Explicación

Pregunta 3 de 73

1

What is the standard vacuum pressure for WAGD?

Selecciona una de las siguientes respuestas posibles:

50-55 PSI
345-380 kPa
380 mm to 760 mm
It varies with the type of system

Explicación

Pregunta 4 de 73

1

A valve installed in each med gas and vacuum system shall be tested to verify which of the following?

Selecciona una de las siguientes respuestas posibles:

Date of installation
Flow and pressure drops
Pressure range
Proper operation and rooms or areas of control

Explicación

Pregunta 5 de 73

1

Brazing procedures and brazer performance for the installation of med gas and vacuum piping shall be qualified in accordance with which ?

Selecciona una de las siguientes respuestas posibles:

ASME section IX
ASSE standard 6010
ASTM B828
AWS B313

Explicación

Pregunta 6 de 73

1

A new bulk system is to be installed at a local hospital; therefore, new wiring from the local panel on the bulk must be run underground to the entry point of the facility. At a minimum, how many sets of wires for each signal are allowable between the initiating device at the bulk and junction box located in the facility?

Selecciona una de las siguientes respuestas posibles:

1 or 2
1 or 3
2 or 3
2 or 4

Explicación

Pregunta 7 de 73

1

Which are may be acceptable to communicate with indoor central supply sources of oxygen, nitrous oxide, or mixtures of these gasses?

Selecciona una de las siguientes respuestas posibles:

An in-building emergency reserve location
Anesthetizing location
Areas of open flame
Kitchen

Explicación

Pregunta 8 de 73

1

Medical Gas Systems shall be deemed breached at the point of pipeline intrusion ___ or by system component removal, or addition.

Selecciona una de las siguientes respuestas posibles:

Closing of Valve
Cylinder change out
Physical separation
Testing

Explicación

Pregunta 9 de 73

1

Who shall witness both the installer performed standing pressure test and standing vacuum test?

Selecciona una de las siguientes respuestas posibles:

Installation contractor superintendent
Medical gas verifier
The authority having jurisdiction or its designee
A witness is not required

Explicación

Pregunta 10 de 73

1

A medical air compressor intake piping shall be located a minimum of how many feet from any vent?

Selecciona una de las siguientes respuestas posibles:

10
12
15
25

Explicación

Pregunta 11 de 73

1

Nitrous Oxide portable containers shall be prevented from reaching temperatures lower than how many degrees Fahrenheit?

Selecciona una de las siguientes respuestas posibles:

20
0
Minus 20
Minus 29

Explicación

Pregunta 12 de 73

1

Medical air quality monitoring for dew point shall activate a local alarm and _ when dew point at system pressure exceeds __ degrees Fahrenheit.

Selecciona una de las siguientes respuestas posibles:

A local alarm and area alarm; +39
All master alarms; +35
All master alarms; +39
All master alarms; +41

Explicación

Pregunta 13 de 73

1

Which gas or vacuum system is considered a medical support gas?

Selecciona una de las siguientes respuestas posibles:

Carbon dioxide
Medical air
Nitrogen
WAGD

Explicación

Pregunta 14 de 73

1

Which of these is an acceptable location for the exhaust of medical vacuum?

Selecciona una de las siguientes respuestas posibles:

Away from public places
Indoors
Next to medical air intake
Underground

Explicación

Pregunta 15 de 73

1

If copper tube in medical gas system is to be joined using memory metal fittings having a temperature rating of 1000 degrees Fahrenheit the fittings must have a pressure rating of not less than how many psi?

Selecciona una de las siguientes respuestas posibles:

150
300
500
These fittings do not meet the temperature requirement for joining copper tube

Explicación

Pregunta 16 de 73

1

Medical gas piping shall be labeled by ____ identifying it as a patient medical gas, the support gas, or the vacuum system.

Selecciona una de las siguientes respuestas posibles:

Color coding each valve
Hang-tags every 20' and in each room
Painting the entire piping system
Stenciling or adhesive markers

Explicación

Pregunta 17 de 73

1

Non-certified personnel are permitted to install a category 3 piped med-gas delivery system only under which of these conditions?

Selecciona una de las siguientes respuestas posibles:

The installing contractor is certified
when the foreman is certified
when working directly with an ASSE 6010 certified installer
This is never permitted

Explicación

Pregunta 18 de 73

1

Nitrous Oxide source supplies shall be prevented from reaching temperatures lower than how many degrees Fahrenheit?

Selecciona una de las siguientes respuestas posibles:

+32
+20
-20
-22

Explicación

Pregunta 19 de 73

1

Central supply systems for _____, located outside of a facility with a total capacity connected and in storage of 20,000 cu ft or more at standard temperature and pressure, shall comply with NFPA 55.

Selecciona una de las siguientes respuestas posibles:

Carbon dioxide
Nitrous oxide
Oxygen
Storage

Explicación

Pregunta 20 de 73

1

According to NFPA 99, electrical devices in manifold rooms must be elevated at least how many feet off the floor to protect them from damage?

Selecciona una de las siguientes respuestas posibles:

2
3
5
There is no height requirement

Explicación

Pregunta 21 de 73

1

Which of these is a requirement when patient medical gasses are piped into areas where their use would not be under supervision of a licensed clinician using them for a purpose clearly relevant to patient treatment?

Selecciona una de las siguientes respuestas posibles:

The outlets for such piping must clearly indicate "NOT FOR PATIENT USE"
The piping must be clearly labeled "NOT FOR PATIENT USE"
This arrangement is only permitted where defined risk assessment has determined the facility to be a category 3
Patient medical gasses are NOT permitted to be piped in such areas

Explicación

Pregunta 22 de 73

1

Intake air for instrument air compressor shall be permitted to be drawn from

Selecciona una de las siguientes respuestas posibles:

Ducted air or from the air handler exhaust only
Outside, from ducted air, or from the equipment location
The equipment location only
Within 5 feet of the vacuum exhaust

Explicación

Pregunta 23 de 73

1

Medical gas alarm wiring shall be protected by which of the following ? Choose answer that includes ALL permitted options.

Selecciona una de las siguientes respuestas posibles:

Conduit, or free air
Conduit, free air, or wire
Conduit, free air, wire, or cable tray
Conduit, free air, wire, cable tray, or raceways

Explicación

Pregunta 24 de 73

1

All station outlets and inlets shall be identified as to name or _____ for the specific medical gas or vacuum provided.

Selecciona una de las siguientes respuestas posibles:

chemical symbol
color
operating pressure
style(quick-connect or DISS)

Explicación

Pregunta 25 de 73

1

How long must the initial pressure test for the piping of medical gasses and vacuum systems by maintained?

Selecciona una de las siguientes respuestas posibles:

8 hours
24 hours
Until 25% of the joints have been examined for leakage
Until 100% of the joints have been examined for leakage

Explicación

Pregunta 26 de 73

1

According to the 2012 NFPA 99 there are now four relevant patient care categories for medical gasses, and the criteria used to determine which to apply is to perform a defined risk assessment. Which of the following lists the essential criteria which best describe the four categories?

Selecciona una de las siguientes respuestas posibles:

Death or major injury, minor injury, patient discomfort, no impact
Hospital, outpatient facility, dental facility, laboratory
Level 1, Level 2, Level 3, Level 4
Medical, semi-medical, non-medical, mechanical

Explicación

Pregunta 27 de 73

1

Which of these is requirement for both the primary and secondary headers for manifolds which contain cryogenic liquid?

Selecciona una de las siguientes respuestas posibles:

Installed indoors only
Installed outdoors only
Located in same enclosure
Located remote from the facility

Explicación

Pregunta 28 de 73

1

When low-pressure threaded connections are employed in gas equipment they must be in accordance with the applicable sections of which of the following publication?

Selecciona una de las siguientes respuestas posibles:

ASHRAE Handbook of Fundamentals
CDA copper tube handbook
CGA V-5 Diameter index safety system
The joint commission comprehensive accreditation manual for hospitals

Explicación

Pregunta 29 de 73

1

The 24 hour standing pressure test of the positive pressure piping system shall be witnessed by which of these individuals or entities?

Selecciona una de las siguientes respuestas posibles:

Authority having jurisdiction
general contractor
inspector
verifier

Explicación

Pregunta 30 de 73

1

Which of the following hazards does NFPA 99 specify shall be considered in the design, installation, testing, and maintenance of medical gas and vacuum piping systems?

Selecciona una de las siguientes respuestas posibles:

Contamination
Fire and explosion
Fire and smoke
WAter and gas

Explicación

Pregunta 31 de 73

1

Piping systems for patient gas/vacuum shall ___ used for distribution of flammable anesthetic gasses.

Selecciona una de las siguientes respuestas posibles:

Be cleaned after being
Be replaced after being
Be tagged while being
NOT be

Explicación

Pregunta 32 de 73

1

In category 3 medical gas distribution systems the initial cross connection test requires the individual gas system being tested to be pressurized to how many pounds per square inch?

Selecciona una de las siguientes respuestas posibles:

50
60
75
A minimum of 150

Explicación

Pregunta 33 de 73

1

Which type of gas storage system requires specialized knowledge and consideration of the information in the NFPA 55 for locating, installing, and inspection?

Selecciona una de las siguientes respuestas posibles:

Bulk cryogenic systems
Instrument air
Manifolds located indoors
WAGD

Explicación

Pregunta 34 de 73

1

In an emergency oxygen supply connection the check valves are required to be constructed of which of the following materials?

Selecciona una de las siguientes respuestas posibles:

Brass, bronze, or stainless steel
Brass or Bronze
Materials per the manufacturers recommendations
NFPA 99 does NOT establish any material requirements for these check valves

Explicación

Pregunta 35 de 73

1

The accuracy of digital pressure indicators shall be plus or minus what percent of the operating pressure at which they are used?

Selecciona una de las siguientes respuestas posibles:

2%
3%
4%
5%

Explicación

Pregunta 36 de 73

1

What minimum clearance (inches) is required around the EOSC?

Selecciona una de las siguientes respuestas posibles:

12
24
36
NFPA does not state a requirement

Explicación

Pregunta 37 de 73

1

Metallic flexible joints are being used in the pipeline for vibration control. Which of the following is NOT true of such joints?

Selecciona una de las siguientes respuestas posibles:

Able to withstand temperatures of 1000 degrees Fahrenheit
Provided with brazing extensions to allow brazing into the pipeline
Received on jobsite with certification of cleanliness
Suitable for service at 150 psi or above

Explicación

Pregunta 38 de 73

1

Which of the following is NOT acceptable for the outlet connections of cylinders of cryogenic liquid containers?

Selecciona una de las siguientes respuestas posibles:

They shall be designed to render the attachment point unusable when removed
They shall be gas specific
They shall be integral to the valve
The shall be removed with ordinary tools

Explicación

Pregunta 39 de 73

1

Which of these methods is NOT permitted for a label identification of med gas or vacuum system piping?

Selecciona una de las siguientes respuestas posibles:

Adhesive markers with the name of system
Stenciling name of system
Stenciling the chemical symbol
Each of these labeling methods is acceptable

Explicación

Pregunta 40 de 73

1

Threaded connections in the medical gas piping distribution system are NOT permitted for which of the following devices?

Selecciona una de las siguientes respuestas posibles:

Alarm devices
In-line check valves
Pressure indicators
Vacuum indicatiors

Explicación

Pregunta 41 de 73

1

When installed in ____ copper tube hangars that are in contact with the tube. A plastic-coated or otherwise electrically insulated from the tube.

Selecciona una de las siguientes respuestas posibles:

Extremely dry locations
Locations with temperatures below 32 degrees Fahrenheit
Potentially damp location
Underground locations

Explicación

Pregunta 42 de 73

1

What is the name of the valve located off the main where the piping runs up through the building?

Selecciona una de las siguientes respuestas posibles:

In-line
Main
Riser
Source

Explicación

Pregunta 43 de 73

1

What is the term for the external device used for the temporary supply of oxygen?

Selecciona una de las siguientes respuestas posibles:

CGA
EOSC
POC
PRV

Explicación

Pregunta 44 de 73

1

Which of these is a requirement for wireless communication devices employed in medical gas warning systems?

Selecciona una de las siguientes respuestas posibles:

Electronic shielded
Installed at the med gas or vacuum source
located at a control desk
Supervised such that failure of communication will initiate an alarm

Explicación

Pregunta 45 de 73

1

When/where are flexible metallic joints permitted in the med-gas pipeline?

Selecciona una de las siguientes respuestas posibles:

Only on the patient side of the source valve
Only on the source side of the source valve
when provided with extensions for brazing
when suitable for service at 150 psig or above

Explicación

Pregunta 46 de 73

1

In med-gas piping systems. Off the main line before any distribution . What is the name of this valve?

Selecciona una de las siguientes respuestas posibles:

An occlusion
Main valve
Service Valve
Source Valve

Explicación

Pregunta 47 de 73

1

A plumbing contractor, certified as an ASSE 6010 installer, is installing the med-gas system in a new category 1 facility. When is it permissible for his employees who are not certified as ASSE 6010 installers to install piing or components of the med-gas systems?

Selecciona una de las siguientes respuestas posibles:

When work involves equipment and not piping
When working directly with an installer
When working for a contractor who is certified, installers are not required to be certified
Workers who are not certified are NOT permitted to install med-gas piping or equipment

Explicación

Pregunta 48 de 73

1

Which test shall follow the initial blow down test?

Selecciona una de las siguientes respuestas posibles:

Initial cross connection test
Initial piping purge test
Initial pressure test
Standing pressure test

Explicación

Pregunta 49 de 73

1

Where piping tests are required. The test gas shall be _ _ .

Selecciona una de las siguientes respuestas posibles:

Compressed oil-free dry air
Oil-free dry nitrogen NF
Source gas
Any of the above

Explicación

Pregunta 50 de 73

1

Medical AIr sources shall be used only for____ and calibration of medical respiratory devices

Selecciona una de las siguientes respuestas posibles:

Human Respiration
Air-operating devices
Instrument Air
All of Above

Explicación

Pregunta 51 de 73

1

The emergency oxygen supply connection shall be installed on the exterior of the building being served, protected from physical damage, and with a minimum of how many feet of clearance around the Connection?

Selecciona una de las siguientes respuestas posibles:

3
5
Minimum clearance is to be determined by the facility risk assessment
There is NO minimum clearance requirement

Explicación

Pregunta 52 de 73

1

NFPA 99 requires that personnel using cylinder and containers shall be familiar with which of the following?

Selecciona una de las siguientes respuestas posibles:

Diameter-index safety system
Pin-index safety system
Spacing and insulation appropriate to the frequency involved
Both A and B

Explicación

Pregunta 53 de 73

1

When compnents have been replaced in manifolds or compressors the system is considered breached and shall be required to be?

Selecciona una de las siguientes respuestas posibles:

Approved by the AHJ
Approved by the manufacturer
Inspected and tested
There is no further equipment

Explicación

Pregunta 54 de 73

1

Which organization is responsible for determining the correct occupancy of an area within a health care facility?

Selecciona una de las siguientes respuestas posibles:

The Facility
The general contractor
The installer
The verifier

Explicación

Pregunta 55 de 73

1

Zone valves are NOT permitted to be installed in which of these locations?

Selecciona una de las siguientes respuestas posibles:

In the same room as the outlets and inlets that it serves
On the same floor as the outlets and inlets that it serves
With a wall between the outlets and inlets that it serves
With valves placed for ready access

Explicación

Pregunta 56 de 73

1

Where WAGD is produced by the medical surgical vacuum source the total concentration of oxidizers shall be maintained below ______ percent?

Selecciona una de las siguientes respuestas posibles:

19.5
20.6
22.6
23.6

Explicación

Pregunta 57 de 73

1

Which of the following statements is NOT permitted for joining vacuum distribution pipeline systems?

Selecciona una de las siguientes respuestas posibles:

Axially swaged
Memory metal
Non- removable push-fit
Welded

Explicación

Pregunta 58 de 73

1

How many hours must the medical air compressor system be operating normally before air quality test be performed?

Selecciona una de las siguientes respuestas posibles:

2
8
12
32

Explicación

Pregunta 59 de 73

1

Which of the following types of tubes may NOT be used to construct the medical air intake piping?

Selecciona una de las siguientes respuestas posibles:

ASTM B 280 copper ACR tube
ASTM B 88 (type K, L, or M)
Black Pipe (Schedule 40)
Stainless steel tube

Explicación

Pregunta 60 de 73

1

THe installer shows documentation that the intial pressure test for the vacuum system was conducted at 50 PSI. What pressure should the installer have performed this test?

Selecciona una de las siguientes respuestas posibles:

30 in. HG
30 PSi
60 PSI
150 PSI

Explicación

Pregunta 61 de 73

1

What is the classification for a patient care room in which failure of equipment could result in major injury to a patient. Which type of facility is this considered under the code?

Selecciona una de las siguientes respuestas posibles:

Basic care
Critical care
General care
Support

Explicación

Pregunta 62 de 73

1

A facility has an ICU where failure of the medical gas system could result in major injury to a patient. Which type of facility is this considered under the code?

Selecciona una de las siguientes respuestas posibles:

Category 1
Category 2
Level 1
Level 2

Explicación

Pregunta 63 de 73

1

Which of the following statements is NOT correct relative to an Emergency Oxygen Supply Connection (EOSC)

Selecciona una de las siguientes respuestas posibles:

A female Dn (NPS) inlet connection for the EOSC must be sized for 100 percent of the system demand
A high pressure oxygen reserve with a capacity with one hours supply may be substituted for the EOSC
An EOSC must be provided with a minimum 3 feet of clearance around the connection
Each free standing building served from a single oxygen source must be afforded the benefit that comes from an EOSC or adequate substitute is required to be provided with a separate emergency connection

Explicación

Pregunta 64 de 73

1

Service and sealed water used for liquid ring compressors shall be _____ to protect against waterbourne pathogens

Selecciona una de las siguientes respuestas posibles:

Hyper-chlorinated water
Reclaimed water
Soft water
Treated water

Explicación

Pregunta 65 de 73

1

Which procedure is allowable for the tube end preparation while installing copper tubing for a medical gas distribution system?

Selecciona una de las siguientes respuestas posibles:

Cleaning with steel wool
Cutting with a reciprocating saw
Reaming
Rolled smooth or de-bured

Explicación

Pregunta 66 de 73

1

Which of these is true for the installation of alarm sensors?

Selecciona una de las siguientes respuestas posibles:

In secured areas
Permanently
So as to be removable for testing
With threaded connection

Explicación

Pregunta 67 de 73

1

Which of the following is a requirement for the configuration of a zone valve box?

Selecciona una de las siguientes respuestas posibles:

Located in the room it serves
Locked so that is inaccessible to the public
Placed such that a wall intervenes between the valves and the outlets/inlets they control
Serve outlets/inlets located on 2 or more floors

Explicación

Pregunta 68 de 73

1

Standard depth copper fittings for brazing shall be mechanically limited to a make-up depth that is not less than the?

Selecciona una de las siguientes respuestas posibles:

ANSI/ASME standard for brazing
ANSI/ASME standard for soldering
Tool manufacturers recommendations
NFPA 99 does not permit mechanical limitation to alter the make-up depth of a fitting

Explicación

Pregunta 69 de 73

1

Central supply systems for ____, located outside of a facility with a total capacity connected and in storage of 20,000 cu. Ft. or more at standard temperature and pressure, shall comply with NFPA 55

Selecciona una de las siguientes respuestas posibles:

Carbon Dioxide
Nitrous Dioxide
Oxygen
Storage

Explicación

Pregunta 70 de 73

1

A medical air proportioning system shall have a local alarm that monitors which of the following conditions? Choose the answer that includes ALl permitted options.

Selecciona una de las siguientes respuestas posibles:

The medical air concentration is NOT consifered
The warning system indicates nonconforming oxygen concentrations
The medical air has a reserve
The proportioning system is simplex

Explicación

Pregunta 71 de 73

1

Drops to individual station outlets and inlets shall be not less than?

Selecciona una de las siguientes respuestas posibles:

3/8 O.D.
1/2 O.D.
5/8 O.D.
3/4 O.D.

Explicación

Pregunta 72 de 73

1

Which of the following are required when installing shutoff valves for connection of future piping?

Selecciona una de las siguientes respuestas posibles:

Locked or latched closed
Identified and labeled
Brazed extension and capped
All of above

Explicación

Pregunta 73 de 73

1

Area alarm panels for medical/surgical vacuum systems shall indicate if the vacuum in the area drops below______gauge Hg/v

Selecciona una de las siguientes respuestas posibles:

29.9 in.
30 in.
12 in.
10 in.

	Creado por brandon_c28 hace casi 11 años

Test sobre Med Gas Pre Test, creado por brandon_c28 el 16/01/2014.

Med Gas Pre Test

Med Gas Pre Test

Pregunta 1 de 73

How many egresses (exits) gates are required for outdoor enclosures containing medical gas supply systems?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 2 de 73

A positive pressure supply system has duplex line regulators piped in parallel. Which of these is NOT a requirement for the regulators?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 3 de 73

What is the standard vacuum pressure for WAGD?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 4 de 73

A valve installed in each med gas and vacuum system shall be tested to verify which of the following?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 5 de 73

Brazing procedures and brazer performance for the installation of med gas and vacuum piping shall be qualified in accordance with which ?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 6 de 73

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 7 de 73

Which are may be acceptable to communicate with indoor central supply sources of oxygen, nitrous oxide, or mixtures of these gasses?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 8 de 73

Medical Gas Systems shall be deemed breached at the point of pipeline intrusion ___ or by system component removal, or addition.

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 9 de 73

Who shall witness both the installer performed standing pressure test and standing vacuum test?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 10 de 73

A medical air compressor intake piping shall be located a minimum of how many feet from any vent?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 11 de 73

Nitrous Oxide portable containers shall be prevented from reaching temperatures lower than how many degrees Fahrenheit?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 12 de 73

Medical air quality monitoring for dew point shall activate a local alarm and ___ when dew point at system pressure exceeds ____ degrees Fahrenheit.

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 13 de 73

Which gas or vacuum system is considered a medical support gas?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 14 de 73

Which of these is an acceptable location for the exhaust of medical vacuum?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 15 de 73

If copper tube in medical gas system is to be joined using memory metal fittings having a temperature rating of 1000 degrees Fahrenheit the fittings must have a pressure rating of not less than how many psi?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 16 de 73

Medical gas piping shall be labeled by ____ identifying it as a patient medical gas, the support gas, or the vacuum system.

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 17 de 73

Non-certified personnel are permitted to install a category 3 piped med-gas delivery system only under which of these conditions?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 18 de 73

Nitrous Oxide source supplies shall be prevented from reaching temperatures lower than how many degrees Fahrenheit?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 19 de 73

Central supply systems for _____, located outside of a facility with a total capacity connected and in storage of 20,000 cu ft or more at standard temperature and pressure, shall comply with NFPA 55.

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 20 de 73

According to NFPA 99, electrical devices in manifold rooms must be elevated at least how many feet off the floor to protect them from damage?

Medical air quality monitoring for dew point shall activate a local alarm and _ when dew point at system pressure exceeds __ degrees Fahrenheit.