Answers> 2025 Marking Scheme New Update
A local alarm shall activate alarm panels when the dew point on instrument air systems
pressure exceeds ______________ indicating high dew point.
-22° F
Each brazed joint shall be
visually examined after the cleaning of the outside of the joint
Medical air central supply systems shall include air dryer(s) that maintains a maximum dew
point of _________ to 50-55 psi at any level of demand.
32° F
Instrument air shall be dry to a dew point of
-40° F
A building or portion thereof used to provide services or treatment simultaneously to four or
more patients on an outpatient basis, where the patients are incapable of taking action for self-
preservation under emergency conditions without the assistance of others is a
ambulatory health care center
During the outlet flow test, nitrogen outlets shall deliver __________ SCFM with a pressure
drop of no more than 5 psi gage and a static pressure of 160 - 180 psi.
5.0
The reserve supply manifold of high pressure cylinders shall consist of ____________
connections.
three or more
Piping underground within buildings or embedded in concrete floors or walls shall be installed
in a
continuous conduit
A building or portion of a building used on a 24 hour basis for the housing of four or more
persons who because of mental or physical incapacity, might be unable to provide for their own
needs and safety without the assistance of another person, is a
, nursing home
For each positive-pressure gas system, the cleanliness of the piping system shall be verified by a
piping particulate test. The gas shall be filtered and shall accrue no more than __________ of
matter from any outlet tested.
1mg
A unit of pressure measurement with zero pressure as the base or reference pressure
PSIA
A building or portion of a building used for minor treatments under the continuous supervision
of a dental professional and no overnight stays for patients or no 24 hours operations take place
is a
Dental Office
_________________________________ is an inorganic compound, that exists as a gas at
atmospheric pressure and temperature, possesses a _________________smell.
Nitrous Oxide, Sweet
PVC dental vacuum piping shall be subjected to a vacuum test of not less than ________ in.
gauge HgV.
12 in. Gauge HgV
Manufactured assemblies shall have a flame spread rating of not greater than
200
Instrument air is designed to have an operating pressure of ____________________ psi gauge
160-185
Flexible connectors of other than all-metal construction that connect manifolds to the gas
distribution piping shall not exceed ______ feet in length and shall not penetrate walls, floors,
ceilings, or partitions.
5ft
Medical air compressors shall be sufficient to serve the peak calculated demand with the
____________ single compressor out of service. But in no case shall there be fewer than
______ compressors.
Largest, 2