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// CODE SNIPPET

Section 916 Gas Detection Systems

Los Angeles Building Code > 9 Fire Protection Systems > 916 Gas Detection Systems
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[F] 916.1 General

Gas detection systems required by this code shall comply with Sections 916.2 through 916.11.

[F] 916.2 Construction Documents

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.

[F] 916.3 Equipment

Gas detection system equipment shall be designed for use with the gases being detected and shall be installed in accordance with manufacturers' instructions.

[F] 916.4 Power Connections

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.

[F] 916.5 Emergency and Standby Power

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.

[F] 916.6 Sensor Locations

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.

[F] 916.7 Gas Sampling

Gas sampling shall be performed continuously. Sample analysis shall be processed immediately after sampling, except as follows:
  1. For HPM gases, sample analysis shall be performed at intervals not exceeding 30 minutes.
  2. 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.
  3. Where a less frequent or delayed sampling interval is approved.

[F] 916.8 System Activation

A gas detection alarm shall be initiated where any sensor detects a concentration of gas exceeding the following thresholds:
  1. For flammable gases, a gas concentration exceeding 25 percent of the lower flammable limit (LFL).
  2. For non-flammable gases, a gas concentration exceeding the threshold specified by the section of this code requiring a gas detection system.
Upon activation of a gas detection alarm, alarm signals or other required responses shall be as specified by the section of this code or the International Fire Code requiring a gas detection system. Audible and visible alarm signals associated with a gas detection alarm shall be distinctive from fire alarm and carbon monoxide alarm signals.

[F] 916.9 Signage

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.

[F] 916.10 Fire Alarm System Connections

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.

[F] 916.11 Inspection, Testing and Sensor Calibration

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
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