Statutes, codes, and regulations
Louisiana Administrative Code
Title 43 - NATURAL RESOURCESPart XIII - Office of Conservation-Pipeline SafetySubpart 3 - Transportation of Natural Gas or Other Gas by Pipeline: Minimum Safety Standards [49 CFR Part 192]
Chapter 11 - Design of Pipeline Components [49 CFR Part 192 Subpart D]
Section XIII-1127 - Compressor Stations: Emergency Shutdown [49 CFR 192.167]

La. Admin. Code tit. 43 § XIII-1127

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Current through Register Vol. 50, No. 9, September 20, 2024
Section XIII-1127 - Compressor Stations: Emergency Shutdown [49 CFR 192.167]
A. Except for unattended field compressor stations of 1,000 horsepower (746 kilowatts) or less, each compressor station must have an emergency shutdown system that meets the following. [ 49 CFR 192.167(a)]
1. It must be able to block gas out of the station and blow down the station piping. [ 49 CFR 192.167(a)(1)]
2. It must discharge gas from the blowdown piping at a location where the gas will not create a hazard. [ 49 CFR 192.167(a)(2)]
3. It must provide means for the shutdown of gas compressing equipment, gas fires, and electrical facilities in the vicinity of gas headers and in the compressor building, except, that: [ 49 CFR 192.167(a)(3)]
a. electrical circuits that supply emergency lighting required to assist station personnel in evacuating the compressor building and the area in the vicinity of the gas headers must remain energized; and [ 49 CFR 192.167(a)(3)(i)]
b. electrical circuits needed to protect equipment from damage may remain energized. [ 49 CFR 192.167(a)(3)(ii) ]
4. It must be operable from at least two locations, each of which is: [ 49 CFR 192.167(a)(4)]
a. outside the gas area of the station; [ 49 CFR 192.167(a)(4)(i)]
b. near the exit gates, if the station is fenced, or near emergency exits, if not fenced; and [ 49 CFR 192.167(a)(4)(ii) ]
c. not more than 500 feet (153 meters) from the limits of the station. [ 49 CFR 192.167(a)(4)(iii) ]
B. If a compressor station supplies gas directly to a distribution system with no other adequate source of gas available, the emergency shut-down system must be designed so that it will not function at the wrong time and cause an unintended outage on the distribution system. [ 49 CFR 192.167(b)]
C. On a platform located offshore or in inland navigable waters, the emergency shutdown system must be designed and installed to actuate automatically by each of the following events: [ 49 CFR 192.167(c)]
1. in the case of an unattended compressor station: [ 49 CFR 192.167(c)(1)]
a. when the gas pressure equals the maximum allowable operating pressure plus 15 percent; or [ 49 CFR 192.167(c)(1)(i)]
b. when an uncontrolled fire occurs on the platform; and [ 49 CFR 192.167(c)(1)(ii) ]
2. in the case of a compressor station in a building: [ 49 CFR 192.167(c)(2)]
a. when an uncontrolled fire occurs in the building; or [ 49 CFR 192.167(c)(2)(i)]
b. when the concentration of gas in air reaches 50 percent or more of the lower explosive limit in a building which has a source of ignition. [ 49 CFR 192.167(c)(2)(ii) ]
D. For the purpose of Subparagraph C.2.b of this Section, an electrical facility which conforms to Class 1, Group D of the National Electrical Code is not a source of ignition. [ 49 CFR 192.167(c)(2)(ii) ]

La. Admin. Code tit. 43, § XIII-1127

Promulgated by the Department of Natural Resources, Office of Conservation, LR 9:224 (April 1983), amended LR 10:517 (July 1984), LR 27:1540 (September 2001), LR 30:1235 (June 2004).
AUTHORITY NOTE: Promulgated in accordance with R.S. 30:501 et seq.