// CODE SNIPPET
Section 916 Gas Detection Systems
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Documentation of the
gas detection system design and equipment to be used that is
adequate to demonstrate compliance with the requirements of
this code shall be provided with the application for permit.
Gas detection system equipment shall
be designed for use with the gases being detected and shall be
installed in accordance with manufacturers' instructions.
Gas detection systems shall be
permanently connected to the building electrical power supply
or shall be permitted to be cord connected to an
unswitched receptacle using an approved restraining means
that secures the plug to the receptacle.
Where standby or
emergency power is not required elsewhere by this code,
standby or emergency power shall be provided or the gas
detection system shall initiate a trouble signal at an approved
location if the power supply is interrupted.
Where a specific location for
sensors is not specified elsewhere by this code, sensors shall
be installed in approved locations where leaking gases are
expected to accumulate.
Gas sampling shall be performed
continuously. Sample analysis shall be processed immediately
after sampling, except as follows:
- For HPM gases, sample analysis shall be performed at intervals not exceeding 30 minutes.
- For toxic gases that are not HPM, sample analysis shall be performed at intervals not exceeding 5 minutes in accordance with Section 6004.2.2.7 of the International Fire Code.
- Where a less frequent or delayed sampling interval is approved.
A gas detection alarm shall be
initiated where any sensor detects a concentration of gas
exceeding the following thresholds:
- For flammable gases, a gas concentration exceeding 25 percent of the lower flammable limit (LFL).
- For non-flammable gases, a gas concentration exceeding the threshold specified by the section of this code requiring a gas detection system.
Signs shall be provided adjacent to gas
detection system alarm signaling devices that advise occupants
of the nature of the signals and actions to take in
response to the signal.
Gas sensors and
gas detection systems shall not be connected to fire alarm
systems unless approved and connected in accordance with
the fire alarm equipment manufacturer's instructions.
Gas
detection systems and sensors shall be inspected, tested and
calibrated in accordance with the International Fire Code.
Related Code Sections
1406.3.3 Process Piping, Gas-Detection System
the accepted permissible exposure limit
for the gas, a continuous gas-monitoring system shall be
provided to detect the presence of a short-term hazard ...
Los Angeles Mechanical Code > 14 Process Piping > 1406.0 Pipe, Tubing, and Fittings > 1406.3 Special Requirements for HPP Gases > 1406.3.3 Gas-Detection System
1406.3.3 Process Piping, Gas-Detection System
the accepted permissible exposure limit
for the gas, a continuous gas-monitoring system shall be
provided to detect the presence of a short-term hazard ...
Los Angeles Mechanical Code > 14 Process Piping > 1406.0 Pipe, Tubing, and Fittings > 1406.3 Special Requirements for HPP Gases > 1406.3.3 Gas-Detection System
2702.2.18 Electrical, Gas Detection Systems
Emergency or
standby power shall be provided for gas detection systems
in accordance with the California Fire Code ...
Los Angeles Building Code > 27 Electrical > 2702 Emergency and Standby Power Systems > 2702.2 Where Required > 2702.2.18 Gas Detection Systems
406.8.2 Special Detailed Requirements Based on Occupancy and Use, Gas Detection System
with a gas detection system that complies with Section 916. The gas detection system shall be designed to detect leakage of nonodorized gaseous fuel ...
Los Angeles Building Code > 4 Special Detailed Requirements Based on Occupancy and Use > 406 Motor-Vehicle-Related Occupancies > 406.8 Repair Garages > 406.8.2 Gas Detection System
406.8.5 Special Detailed Requirements Based on Use and Occupancy, Gas Detection System
be provided with a gas detection system that
complies with Section 916. The gas detection system shall
be designed to detect leakage of nonodorized gaseous ...
Los Angeles Building Code > 4 Special Detailed Requirements Based on Use and Occupancy > 406 Motor-Vehicle-Related Occupancies > 406.8 Repair Garages > 406.8.5 Gas Detection System