2.
The secondary warning location shall be located to assure
continuous surveillance during the working hours of the
facility. Suitable secondary warning locations may include
intensive care nursing unit, fire station, telephone
switchboard, security office or other continuously staffed
location.
3.
Coordinate both master alarm panel locations with the user
facility and the other design services. When deciding upon
alarm locations, consider emergency power circuits,
Engineering Control Center data relay interface locations,
and the facility's established procedures for monitoring
alarm signals. Provide the following on plumbing drawings:
a.
Low voltage wiring and pressure switches associated
with master alarm signals and panels (on floor plans).
b.
Low voltage wiring diagram associated with master
alarm signals and panels.
c.
Tubing runs from piping to area alarm panels (on floor
plans and medical gas and vacuum system diagrams).
B.
Include an area alarm for each system at the nurses station in
all areas where medical gas and vacuum station outlets and
inlets are installed.
11.7
Connection to Existing Medical Gas Systems:
A.
Install shut off valve at the connection of new line to
existing line. The valve assembly should fabricated and brazed
onto the connection line.
B.
Coordinate time for shut down of the existing with the VAMC.
C.
All oxygen zone valves and gas riser valves should be shut off
if the section to be connected to cannot be totally isolated
from the remainder of the system.
D.
Prior to any work being done, the new pipeline should be
checked for particulate or other forms of contamination.
E.
Insure that the correct type of pipe tubing and fittings are
being used.
F.
A spot check of the existing pipelines in the facility should
also be made to determine the level of cleanliness present.
G.
Reduce the pressure of "0", and make the tie-in as quickly as
possible. A nitrogen purge is not required since this would
require another opening in the pipeline.
H.
After the tie in is made and allowed to cool, the source gas,
i.e., oxygen, is slowly bled back into the pipeline. The work
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