A. A gas shut-off device is not required to be installed downstream of the gas utility meter where a gas shut-off device has been installed by the gas utility or a contractor authorized by the gas utility upstream of the gas utility meter and downstream of the meter service regulator and such installation is in accordance with this ordinance and with the manufacturer's specifications.
B. Gas shut-off devices installed on a building prior to the effective date of this chapter, are exempt from the requirements of this section provided they remain installed on the building or structure and are maintained for the life of the building or structure.
C. Gas shut-off devices installed on a gas distribution system owned or operated by a public utility shall not be subject to the requirements of this chapter (Health & Safety Code § 19201(b)).
D. A gas shut-off device shall not be required where the gas piping system contained in the building or structure is designed to withstand seismic effects of earthquakes..
E. This chapter shall not apply to mechanical or process equipment used in manufacturing.
F. This chapter shall not apply to gas shutoff devices installed within gas lines (Health & Safety Code § 19204). (Ord. 01-101 § 2(part), 2001).