MED GAS NFPA 99 WORKSHEET #5 Exam | Verified Exam Questions
and Answers | Latest Updated Study Material 2026
Question:
MED GAS NFPA 99 WORKSHEET #5 Exam | Comprehensive
NFPA99 points out that inspection and testing shall be carried through for all EXCEPT the
following operations
Answer:
after annual maintenance
Question:
which of these operations would NOT breach the vacuum system?
Answer:
testing the system component with a leak detectant solution
Question:
the removal of components within a source system for repair and reinstallation, or for
replacement, shall be treated as new work, for the purposes of testing whenever such work
involves which of the following?
Answer:
cutting and/or brazing new
piping
Question:
who is the individual responsible for reviewing all inspections and testing reports prior to the use
of the new, renovated, or temporary medical gas and vacuum installations?
Answer:
responsible facility authority
Question:
when is the initial pressure test conducted by the installer?
Answer:
after
blow down of the distribution piping
, Question:
the installer shows documentation that the initial pressure test for the vacuum system was
conducted at 50 PSI. at what pressure should the installer have performed the test?
Answer:
150 PSI
Question:
in a dental gas system, the initial cross-connection test of copper medical gas distribution piping
requires the piping to be pressurized by how many PSI?
Answer:
50 PSI
Question:
the standing pressure test for positive pressure medical gas piping shall be conducted with the
source valve closed and the piping system subjected to which test time and pressure?
Answer:
24 hours at 20% above normal operating pressure
Question:
in a category 1 facility, what 3 items are correct regarding the standing vacuum test for vacuum
piping? what are the 3 most essential things to remember when testing?
Answer:
1. leakage attributed to specific changes in ambient temperature over .5
percent of the starting pressure may be allowed
Question:
2. during the test, the source of the test vacuum shall be disconnected from the piping system
3. standing vacuum test is performed after successful completion of an initial pressure test of
positive pressure and vacuum systems
who shall witness the installer perform both the standing pressure test and the standing vacuum
test?
Answer:
the authority having jurisdiction, or its designee
and Answers | Latest Updated Study Material 2026
Question:
MED GAS NFPA 99 WORKSHEET #5 Exam | Comprehensive
NFPA99 points out that inspection and testing shall be carried through for all EXCEPT the
following operations
Answer:
after annual maintenance
Question:
which of these operations would NOT breach the vacuum system?
Answer:
testing the system component with a leak detectant solution
Question:
the removal of components within a source system for repair and reinstallation, or for
replacement, shall be treated as new work, for the purposes of testing whenever such work
involves which of the following?
Answer:
cutting and/or brazing new
piping
Question:
who is the individual responsible for reviewing all inspections and testing reports prior to the use
of the new, renovated, or temporary medical gas and vacuum installations?
Answer:
responsible facility authority
Question:
when is the initial pressure test conducted by the installer?
Answer:
after
blow down of the distribution piping
, Question:
the installer shows documentation that the initial pressure test for the vacuum system was
conducted at 50 PSI. at what pressure should the installer have performed the test?
Answer:
150 PSI
Question:
in a dental gas system, the initial cross-connection test of copper medical gas distribution piping
requires the piping to be pressurized by how many PSI?
Answer:
50 PSI
Question:
the standing pressure test for positive pressure medical gas piping shall be conducted with the
source valve closed and the piping system subjected to which test time and pressure?
Answer:
24 hours at 20% above normal operating pressure
Question:
in a category 1 facility, what 3 items are correct regarding the standing vacuum test for vacuum
piping? what are the 3 most essential things to remember when testing?
Answer:
1. leakage attributed to specific changes in ambient temperature over .5
percent of the starting pressure may be allowed
Question:
2. during the test, the source of the test vacuum shall be disconnected from the piping system
3. standing vacuum test is performed after successful completion of an initial pressure test of
positive pressure and vacuum systems
who shall witness the installer perform both the standing pressure test and the standing vacuum
test?
Answer:
the authority having jurisdiction, or its designee
