Medical Gas 6010 Installers Newest
With Complete All 160 Questions
And Correct Detailed Answers|
Brand New Version!
1. Medical gas systems in health care facilities are primarily covered under which
NFPA code?
A. NFPA 70 (NEC)
B. NFPA 99
C. NFPA 101 (Life Safety Code)
D. NFPA 45
Answer: B. NFPA 99
Rationale: NFPA 99, the Health Care Facilities Code, contains the comprehensive
requirements for medical gas, vacuum, and associated piping systems in healthcare
settings.
2. The term "medical gas" includes all of the following EXCEPT:
A. Oxygen
B. Medical air
C. Nitrogen for surgical tools
D. Industrial compressed air for maintenance
Answer: D. Industrial compressed air for maintenance
Rationale: Medical gases are specifically defined as those used for patient care,
diagnosis, or treatment. Industrial compressed air does not meet the purity and safety
standards required for medical applications.
,3. Which category of piping system is used for oxygen, medical air, and nitrous
oxide?
A. Category 1
B. Category 2
C. Category 3
D. Category 4
Answer: A. Category 1
Rationale: NFPA 99 defines Category 1 systems as those directly used for patient care
that are life-support or critical systems. Oxygen, medical air, and nitrous oxide fall under
this category due to their direct role in sustaining patient life.
4. A medical gas system that is installed in a health care facility must be tested and
certified by:
A. The installing contractor only
B. The authority having jurisdiction (AHJ)
C. A qualified third-party inspector
D. The facility's maintenance staff
Answer: C. A qualified third-party inspector
Rationale: NFPA 99 requires that an initial verification and periodic recertification be
performed by a qualified third-party inspector who is independent of the installing
entity to ensure impartiality and compliance.
5. The minimum design pressure for medical gas piping systems (except vacuum)
is:
A. 100 psi (689 kPa)
B. 150 psi (1034 kPa)
C. 200 psi (1379 kPa)
D. 300 psi (2068 kPa)
Answer: C. 200 psi (1379 kPa)
Rationale: NFPA 99 mandates that medical gas piping systems be designed for a
,minimum of 200 psig to ensure structural integrity and adequate pressure delivery
under peak demand conditions.
6. Which of the following materials is NOT permitted for medical gas piping?
A. Copper (Type K or L)
B. Stainless steel (Type 304 or 316)
C. Brass fittings
D. PVC
Answer: D. PVC
Rationale: PVC is prohibited for medical gas piping due to its combustibility,
permeability to gases, inability to be cleaned for oxygen service, and the fact that it
cannot be brazed, which is the required joining method.
7. The minimum acceptable wall thickness for copper tubing used in medical gas
systems is:
A. Type K (thickest)
B. Type L (medium)
C. Type M (thinnest)
D. Type DWV (drain, waste, vent)
Answer: A. Type K (thickest)
Rationale: Type K copper tube has the thickest wall and is required for medical gas
systems to provide maximum strength, durability, and resistance to mechanical damage.
8. When brazing medical gas piping, the brazing alloy must have a melting point
above:
A. 800°F (427°C)
B. 1000°F (538°C)
C. 1200°F (649°C)
D. 1500°F (816°C)
Answer: B. 1000°F (538°C)
Rationale: Brazing alloys must have a liquidus temperature above 1000°F to qualify as
, brazing rather than soldering. Soldering is not permitted for medical gas systems
because the joints may fail in a fire.
9. The minimum pressure for a hydrostatic test of a medical gas piping system is:
A. 100 psig (689 kPa)
B. 150 psig (1034 kPa)
C. 200 psig (1379 kPa)
D. 300 psig (2068 kPa)
Answer: D. 300 psig (2068 kPa)
Rationale: NFPA 99 requires a hydrostatic test at 1.5 times the system design pressure
(200 psig × 1.5 = 300 psig) to verify system integrity.
10. The duration of the hydrostatic test for medical gas piping shall be:
A. 1 hour
B. 2 hours
C. 4 hours
D. 24 hours
Answer: C. 4 hours
Rationale: The test must be conducted at 1.5 times design pressure for at least 4 hours
with no visible leakage to ensure the system can withstand operational stresses.
11. Following hydrostatic testing, the piping must be:
A. Immediately placed into service
B. Purged and dried with oil-free nitrogen or oil-free dry air
C. Flushed with water
D. Coated with anti-corrosion agent
Answer: B. Purged and dried with oil-free nitrogen or oil-free dry air
Rationale: After hydrostatic testing, the system must be thoroughly purged and dried
to remove moisture and prevent corrosion or contamination of the medical gas.
12. The color coding for medical gas piping is required by:
A. OSHA
With Complete All 160 Questions
And Correct Detailed Answers|
Brand New Version!
1. Medical gas systems in health care facilities are primarily covered under which
NFPA code?
A. NFPA 70 (NEC)
B. NFPA 99
C. NFPA 101 (Life Safety Code)
D. NFPA 45
Answer: B. NFPA 99
Rationale: NFPA 99, the Health Care Facilities Code, contains the comprehensive
requirements for medical gas, vacuum, and associated piping systems in healthcare
settings.
2. The term "medical gas" includes all of the following EXCEPT:
A. Oxygen
B. Medical air
C. Nitrogen for surgical tools
D. Industrial compressed air for maintenance
Answer: D. Industrial compressed air for maintenance
Rationale: Medical gases are specifically defined as those used for patient care,
diagnosis, or treatment. Industrial compressed air does not meet the purity and safety
standards required for medical applications.
,3. Which category of piping system is used for oxygen, medical air, and nitrous
oxide?
A. Category 1
B. Category 2
C. Category 3
D. Category 4
Answer: A. Category 1
Rationale: NFPA 99 defines Category 1 systems as those directly used for patient care
that are life-support or critical systems. Oxygen, medical air, and nitrous oxide fall under
this category due to their direct role in sustaining patient life.
4. A medical gas system that is installed in a health care facility must be tested and
certified by:
A. The installing contractor only
B. The authority having jurisdiction (AHJ)
C. A qualified third-party inspector
D. The facility's maintenance staff
Answer: C. A qualified third-party inspector
Rationale: NFPA 99 requires that an initial verification and periodic recertification be
performed by a qualified third-party inspector who is independent of the installing
entity to ensure impartiality and compliance.
5. The minimum design pressure for medical gas piping systems (except vacuum)
is:
A. 100 psi (689 kPa)
B. 150 psi (1034 kPa)
C. 200 psi (1379 kPa)
D. 300 psi (2068 kPa)
Answer: C. 200 psi (1379 kPa)
Rationale: NFPA 99 mandates that medical gas piping systems be designed for a
,minimum of 200 psig to ensure structural integrity and adequate pressure delivery
under peak demand conditions.
6. Which of the following materials is NOT permitted for medical gas piping?
A. Copper (Type K or L)
B. Stainless steel (Type 304 or 316)
C. Brass fittings
D. PVC
Answer: D. PVC
Rationale: PVC is prohibited for medical gas piping due to its combustibility,
permeability to gases, inability to be cleaned for oxygen service, and the fact that it
cannot be brazed, which is the required joining method.
7. The minimum acceptable wall thickness for copper tubing used in medical gas
systems is:
A. Type K (thickest)
B. Type L (medium)
C. Type M (thinnest)
D. Type DWV (drain, waste, vent)
Answer: A. Type K (thickest)
Rationale: Type K copper tube has the thickest wall and is required for medical gas
systems to provide maximum strength, durability, and resistance to mechanical damage.
8. When brazing medical gas piping, the brazing alloy must have a melting point
above:
A. 800°F (427°C)
B. 1000°F (538°C)
C. 1200°F (649°C)
D. 1500°F (816°C)
Answer: B. 1000°F (538°C)
Rationale: Brazing alloys must have a liquidus temperature above 1000°F to qualify as
, brazing rather than soldering. Soldering is not permitted for medical gas systems
because the joints may fail in a fire.
9. The minimum pressure for a hydrostatic test of a medical gas piping system is:
A. 100 psig (689 kPa)
B. 150 psig (1034 kPa)
C. 200 psig (1379 kPa)
D. 300 psig (2068 kPa)
Answer: D. 300 psig (2068 kPa)
Rationale: NFPA 99 requires a hydrostatic test at 1.5 times the system design pressure
(200 psig × 1.5 = 300 psig) to verify system integrity.
10. The duration of the hydrostatic test for medical gas piping shall be:
A. 1 hour
B. 2 hours
C. 4 hours
D. 24 hours
Answer: C. 4 hours
Rationale: The test must be conducted at 1.5 times design pressure for at least 4 hours
with no visible leakage to ensure the system can withstand operational stresses.
11. Following hydrostatic testing, the piping must be:
A. Immediately placed into service
B. Purged and dried with oil-free nitrogen or oil-free dry air
C. Flushed with water
D. Coated with anti-corrosion agent
Answer: B. Purged and dried with oil-free nitrogen or oil-free dry air
Rationale: After hydrostatic testing, the system must be thoroughly purged and dried
to remove moisture and prevent corrosion or contamination of the medical gas.
12. The color coding for medical gas piping is required by:
A. OSHA
