(a) In addition to NFPA 52 §5.3.1, all appurtenances and equipment placed into CNG service shall be certified, marked, or listed by a nationally recognized laboratory such as Underwriters Laboratory (UL), Factory Mutual (FM), CSA International, or such other laboratories approved by AFS unless:
  (1) it is specifically prohibited for use by another section of this chapter; or
  (2) there is no test specification or procedure developed by the testing laboratory for the appurtenance or equipment.
(b) In addition to NFPA 52 §1.4.1, appurtenances and equipment that cannot be listed but are not prohibited for use by the rules in this chapter shall be acceptable for CNG service provided the appurtenances and equipment are installed in compliance with the applicable rules in this chapter.
(c) In addition to NFPA 52 §1.4.1.2, the licensee or operator of the appurtenances or equipment shall maintain documentation sufficient to substantiate any claims made regarding the safety of any valves, fittings, and equipment and shall, upon request, furnish copies to AFS.
(d) Compliance under this section does not ensure conformity with other state and federal regulations, such as those of the Texas Commission on Environmental Quality or its successor agencies.
(e) Components of CNG stationary installations which are not specifically covered by the rules in this chapter shall not be placed into service until AFS has determined the installation complies with the rules in this chapter. AFS may require any change to a proposed stationary installation which the Commission may consider necessary to ensure the CNG installation is safe for CNG service. If the affected party disagrees with AFS' determination, the party may request a hearing as described in §13.15 of this title (relating to Penalty Guidelines and Enforcement). However, the installation shall not be placed into CNG operation until the Commission has determined the installation complies with the rules of this chapter.

Source Note: The provisions of this §13.37 adopted to be effective February 15, 2021, 46 TexReg 1035