Page 594 - 2018_IFC

APPENDIX L

L104.14.3 Clear space around connections. A working cylinder refill rate from the exterior mobile air connec-
space of not less than 36 inches (914 mm) in width, 36 tion and, where provided, a stored air pressure supply
inches (914 mm) in depth and 78 inches (1981 mm) in system.
height shall be provided and maintained in front of and to 3. The air quality monitoring system shall be tested to ver-
the sides of external mobile air connections. ify both of the following conditions:
L104.15 Air monitoring system. An approved air monitor- 3.1. Visual indicators required by Section L104.15.1
ing system shall be provided. The system shall automatically function properly.
monitor air quality, moisture and pressure on a continual 3.2. Supervisory signals are transmitted as required
basis. The air monitoring system shall be equipped with not
by Section L104.15.2 for each sensor based on a
less than two content analyzers capable of detecting carbon sensor function test.
monoxide, carbon dioxide, nitrogen, oxygen, moisture and
hydrocarbons. 4. Connections intended for fire department use shall be
confirmed as compatible with the fire department’s
L104.15.1 Alarm conditions. The air monitoring system
mobile air unit, SCBA cylinders and, where provided,
shall transmit a supervisory signal when any of the follow- RIC/UAC connections.
ing levels are detected:
5. Air samples shall be taken from not less than two fill
1. Carbon monoxide exceeds 5 ppm.
stations and submitted to an approved gas analysis lab-
2. Carbon dioxide exceeds 1,000 ppm. oratory to verify compliance with NFPA 1989. The
3. An oxygen level below 19.5 percent or above 23.5 FARS shall not be placed into service until a written
percent. report verifying compliance with NFPA 1989 has been
provided to the fire code official.
4. A nitrogen level below 75 percent or above 81 per-
cent.
5. Hydrocarbon (condensed) content exceeds 5 milli- SECTION L106
grams per cubic meter of air. INSPECTION, TESTING AND MAINTENANCE
6. The moisture concentration exceeds 24 ppm by vol- L106.1 Periodic inspection, testing and maintenance. A
ume. FARS shall be continuously maintained in an operative condi-
tion and shall be inspected not less than annually. Not less
7. The pressure falls below 90 percent of the mainte- than quarterly, an air sample shall be taken from the system
nance pressure specified in Section L104.3.
and tested to verify compliance with NFPA 1989. The labora-
L104.15.2 Alarm supervision, monitoring and notifica- tory test results shall be maintained on site and readily avail-
tion. The air monitoring system shall be electrically super- able for review by the fire code official.
vised and monitored by an approved supervising station,
or where approved, shall initiate audible and visual super-
visory signals at a constantly attended location. SECTION L107
REFERENCED STANDARDS
L104.15.3 Air quality status display. Air quality status
shall be visually displayed at the external mobile air con- L104.2.1,
nection required by Section L104.14. ASME B31.1—2016 Process Piping L105.1
CGA S-1.3—2016 Pressure Relief Device L104.7
Standards—Part 3
SECTION L105 Stationary Storage
ACCEPTANCE TESTS Containers for
L105.1 Acceptance tests. Upon completion of the installa- Compressed Gases
tion, a FARS shall be acceptance tested to verify compliance NFPA 1901—16 Standard for Automotive L104.5.1
with equipment manufacturers’ instructions and design docu- Fire Apparatus
ments. Oversight of the acceptance tests shall be provided by NFPA 1989—13 Breathing Air Quality for L104.2.2,
a registered design professional. Acceptance testing shall Fire Emergency L105.1,
include all of the following: Services Respiratory L106.1
Protection
1. A pneumatic test in accordance with ASME B31.3 of
the complete system at a minimum test pressure of 110
percent of the system design pressure using oil free dry
air, nitrogen or argon shall be conducted. Test pressure
shall be maintained for not less than 24 hours. During
this test, all fittings, joints and system components shall
be inspected for leaks. Defects in the system or leaks
detected shall be documented and repaired.
2. A cylinder-filling performance test shall be conducted
to verify compliance with the required breathing air

2018 INTERNATIONAL FIRE CODE ® 561
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