NFPA-99 PRACTICE TEST – QUESTIONS AND ANSWERS | VERIFIED AND WELL DETAILED ANSWERS | PLUS
RATIONALES | GUARANTEED PASS | LATEST EXAM UPDATE
[CORE DOMAINS]
1. Medical Gas and Vacuum Systems
2. Electrical Systems and Safety
3. Gas and Vacuum Piping and Installation
4. Alarm and Monitoring Systems
5. Facility and Environmental Safety
6. Cylinder and Bulk Supply Management
7. Risk Categories and System Classification
8. System Testing, Maintenance, and Documentation
[INTRODUCTION]
This assessment is designed to thoroughly prepare candidates for the NFPA-99 Health Care Facilities Code
examination. It evaluates mastery of critical safety standards for medical gas, vacuum, and electrical systems within
healthcare environments. The test comprises 100 original questions that assess both foundational knowledge and
complex, real-world application scenarios. The format includes multiple-choice questions, many of which present
practical decision-making situations to gauge a candidate's ability to apply code requirements. Success on this exam
signifies a professional’s readiness to ensure the safety and reliability of systems that are essential for patient care. This
practice test focuses on the professional judgment needed to maintain compliance and mitigate risks in healthcare
facilities.
Question 1
Under which of these conditions shall instrument air reserve header cylinders be permitted to be stored with the
instrument air compressor?
A. The mechanical equipment room does not contain a boiler.
,B. The medical air compressors are in the same room.
C. The only motor-driven machinery in the room is for instrument air equipment.
D. The room is secured with lockable doors.
🟢 Correct Answer: C. The only motor-driven machinery in the room is for instrument air equipment.
🔴 Explanation: NFPA 99 restricts the storage of instrument air reserve cylinders with the compressor to rooms
where the only motor-driven machinery is for the instrument air equipment itself, minimizing ignition risks .
Question 2
Riser valves are those valves located where?
A. Adjacent to the main riser downstream of any zone valve.
B. Anywhere in the lateral branches of the piping system.
C. In the mainline adjacent to the base of the riser.
D. In the riser adjacent to the mainline.
🟢 Correct Answer: D. In the riser adjacent to the main line.
🔴 Explanation: Riser valves are specifically defined as valves located in the riser pipe itself, adjacent to the mainline,
allowing the mainline to be isolated from the riser .
Question 3
When is the initial pressure test conducted by the installer?
A. After blowdown of the distribution piping.
B. After installation of alarm sensors.
C. Before blowdown of distribution piping.
D. Before installation of station rough-in assembly.
🟢 Correct Answer: A. After blowdown of the distribution piping.
🔴 Explanation: The initial pressure test is conducted after the blowdown of the distribution piping has been
completed to ensure the system is clean and free of debris before testing .
,Question 4
In portions of systems intended to handle oxygen at pressures greater than 350 psi, the interconnecting hose shall
not contain what material?
A. Brass
B. Copper
C. Polymeric
D. Stainless steel
🟢 Correct Answer: C. Polymeric
🔴 Explanation: For high-pressure oxygen systems, polymeric materials are prohibited due to their potential for
combustion or degradation in a high-pressure oxygen environment .
Question 5
What is the standard gauge pressure for nitrogen gas service?
A. 15 – 30 psi
B. 50 – 55 psi
C. 162 – 185 psi
D. It varies with system type.
🟢 Correct Answer: B. 50 – 55 psi
🔴 Explanation: The standard gauge pressure for nitrogen gas service in healthcare piping systems is typically 50-55
psi, consistent with the pressure requirements for driving surgical tools .
Question 6
A wireless communication device is employed in a medical gas or vacuum warning system. What type of supervision
is required for this device?
A. A visual indicator shall be located in the maintenance office or engineering department.
B. This device shall be installed at the medical gas or vacuum source.
C. This device shall be located at a nurses' station.
, D. This device will be supervised such that failure of communication shall initiate an alarm.
🟢 Correct Answer: D. This device will be supervised such that failure of communication shall initiate an alarm.
🔴 Explanation: NFPA 99 requires that wireless communication devices in alarm systems be supervised so that a loss
of signal triggers a supervisory alarm, ensuring reliability .
Question 7
In a facility where medical gas and vacuum systems are present and the failure of such equipment is likely to cause
major injury or death to patients or caregivers, this system shall be designed to meet which category requirements?
A. Category 1
B. Category 2
C. Category 3
D. Category 4
🟢 Correct Answer: A. Category 1
🔴 Explanation: Category 1 systems are those where failure is likely to cause major injury or death, requiring the
highest level of reliability and redundancy .
Question 8
A facility is in the planning stages of installing an emergency oxygen service connection (EOSC). How many feet is
the minimum amount of clearance required around this connection?
A. 1 foot
B. 3 feet
C. 5 feet
D. Clearance must be 1-1/2 times the width of the auxiliary.
🟢 Correct Answer: B. 3 feet
🔴 Explanation: NFPA 99 mandates a minimum clear space of 3 feet around an emergency oxygen service
connection to allow for safe access and operation .
RATIONALES | GUARANTEED PASS | LATEST EXAM UPDATE
[CORE DOMAINS]
1. Medical Gas and Vacuum Systems
2. Electrical Systems and Safety
3. Gas and Vacuum Piping and Installation
4. Alarm and Monitoring Systems
5. Facility and Environmental Safety
6. Cylinder and Bulk Supply Management
7. Risk Categories and System Classification
8. System Testing, Maintenance, and Documentation
[INTRODUCTION]
This assessment is designed to thoroughly prepare candidates for the NFPA-99 Health Care Facilities Code
examination. It evaluates mastery of critical safety standards for medical gas, vacuum, and electrical systems within
healthcare environments. The test comprises 100 original questions that assess both foundational knowledge and
complex, real-world application scenarios. The format includes multiple-choice questions, many of which present
practical decision-making situations to gauge a candidate's ability to apply code requirements. Success on this exam
signifies a professional’s readiness to ensure the safety and reliability of systems that are essential for patient care. This
practice test focuses on the professional judgment needed to maintain compliance and mitigate risks in healthcare
facilities.
Question 1
Under which of these conditions shall instrument air reserve header cylinders be permitted to be stored with the
instrument air compressor?
A. The mechanical equipment room does not contain a boiler.
,B. The medical air compressors are in the same room.
C. The only motor-driven machinery in the room is for instrument air equipment.
D. The room is secured with lockable doors.
🟢 Correct Answer: C. The only motor-driven machinery in the room is for instrument air equipment.
🔴 Explanation: NFPA 99 restricts the storage of instrument air reserve cylinders with the compressor to rooms
where the only motor-driven machinery is for the instrument air equipment itself, minimizing ignition risks .
Question 2
Riser valves are those valves located where?
A. Adjacent to the main riser downstream of any zone valve.
B. Anywhere in the lateral branches of the piping system.
C. In the mainline adjacent to the base of the riser.
D. In the riser adjacent to the mainline.
🟢 Correct Answer: D. In the riser adjacent to the main line.
🔴 Explanation: Riser valves are specifically defined as valves located in the riser pipe itself, adjacent to the mainline,
allowing the mainline to be isolated from the riser .
Question 3
When is the initial pressure test conducted by the installer?
A. After blowdown of the distribution piping.
B. After installation of alarm sensors.
C. Before blowdown of distribution piping.
D. Before installation of station rough-in assembly.
🟢 Correct Answer: A. After blowdown of the distribution piping.
🔴 Explanation: The initial pressure test is conducted after the blowdown of the distribution piping has been
completed to ensure the system is clean and free of debris before testing .
,Question 4
In portions of systems intended to handle oxygen at pressures greater than 350 psi, the interconnecting hose shall
not contain what material?
A. Brass
B. Copper
C. Polymeric
D. Stainless steel
🟢 Correct Answer: C. Polymeric
🔴 Explanation: For high-pressure oxygen systems, polymeric materials are prohibited due to their potential for
combustion or degradation in a high-pressure oxygen environment .
Question 5
What is the standard gauge pressure for nitrogen gas service?
A. 15 – 30 psi
B. 50 – 55 psi
C. 162 – 185 psi
D. It varies with system type.
🟢 Correct Answer: B. 50 – 55 psi
🔴 Explanation: The standard gauge pressure for nitrogen gas service in healthcare piping systems is typically 50-55
psi, consistent with the pressure requirements for driving surgical tools .
Question 6
A wireless communication device is employed in a medical gas or vacuum warning system. What type of supervision
is required for this device?
A. A visual indicator shall be located in the maintenance office or engineering department.
B. This device shall be installed at the medical gas or vacuum source.
C. This device shall be located at a nurses' station.
, D. This device will be supervised such that failure of communication shall initiate an alarm.
🟢 Correct Answer: D. This device will be supervised such that failure of communication shall initiate an alarm.
🔴 Explanation: NFPA 99 requires that wireless communication devices in alarm systems be supervised so that a loss
of signal triggers a supervisory alarm, ensuring reliability .
Question 7
In a facility where medical gas and vacuum systems are present and the failure of such equipment is likely to cause
major injury or death to patients or caregivers, this system shall be designed to meet which category requirements?
A. Category 1
B. Category 2
C. Category 3
D. Category 4
🟢 Correct Answer: A. Category 1
🔴 Explanation: Category 1 systems are those where failure is likely to cause major injury or death, requiring the
highest level of reliability and redundancy .
Question 8
A facility is in the planning stages of installing an emergency oxygen service connection (EOSC). How many feet is
the minimum amount of clearance required around this connection?
A. 1 foot
B. 3 feet
C. 5 feet
D. Clearance must be 1-1/2 times the width of the auxiliary.
🟢 Correct Answer: B. 3 feet
🔴 Explanation: NFPA 99 mandates a minimum clear space of 3 feet around an emergency oxygen service
connection to allow for safe access and operation .
