Texas Administrative Code
Title 16 - ECONOMIC REGULATION
Part 1 - RAILROAD COMMISSION OF TEXAS
Chapter 13 - REGULATIONS FOR COMPRESSED NATURAL GAS (CNG)
Subchapter D - CNG COMPRESSION, STORAGE, AND DISPENSING SYSTEMS
Section 13.93 - System Protection Requirements
Current through Reg. 50, No. 13; March 28, 2025
(a) In addition to NFPA 52 §7.3.2, and NFPA 55 §§4.11 and 7.1.9, equipment related to a compression, storage, or dispensing installation, shall be protected from tampering and damage in accordance with subsections (b) and (c) of this section. These protections shall be maintained in good condition at all times.
(b) Fencing at CNG stationary installations shall comply with the following.
(c) Guardrails at CNG stationary installations shall comply with the following:
(d) Dispenser protection. Each dispenser shall be secured to a concrete island a minimum of six inches above the normal grade and two inches above the grade of any other fuel dispenser(s). Each dispenser shall be protected against collision damage. Support columns or other such protection installed at the approach end(s) of the concrete island shall prevent collision with the dispenser. If such protection cannot be provided, then the requirements of subsection (c) of this section shall apply.
(e) The provisions of this section notwithstanding, AFS may require an installation to be protected in accordance with this section when evidence exists that because of exceptional circumstances, added safeguards are needed to adequately protect the health, safety, and welfare of the general public. If a person owning or operating such an installation disagrees with the determination of AFS made under this subsection, then that person may request a public hearing on the matter. However, until a determination is issued subsequent to a hearing on the matter, the subject automatic dispenser(s) shall be either protected in the manner described by AFS or removed from CNG service and/or all of the product withdrawn from it.
(f) At least two monitoring sensors shall be installed at all stationary installations where methane can be trapped to detect hazardous levels of methane. Sensors shall activate prior to the methane level exceeding 25% of the lower flammability limit (LFL). If the level exceeds 25% of the LFL, the sensor shall either shut the system down or activate an audible and visual alarm. The number of sensors to be installed shall comply with the area of coverage for each sensor and the size of the installation. The sensors shall be installed and maintained in accordance with the manufacturer's instructions.
(g) In addition to NFPA 52 §§7.4.3.11, 7.11.5.2, and 7.14.12 and NFPA 55 §§4.10 and 7.1.8.3, all CNG storage installations, and installations protected by guardrails only, must comply with the sign and/or lettering requirements of Table 1 of this section.