Texas Administrative Code
Title 30 - ENVIRONMENTAL QUALITY
Part 1 - TEXAS COMMISSION ON ENVIRONMENTAL QUALITY
Chapter 115 - CONTROL OF AIR POLLUTION FROM VOLATILE ORGANIC COMPOUNDS
Subchapter H - HIGHLY-REACTIVE VOLATILE ORGANIC COMPOUNDS
Division 3 - FUGITIVE EMISSIONS
Section 115.787 - Exemptions

Universal Citation: 30 TX Admin Code § 115.787

Current through Reg. 50, No. 13; March 28, 2025

(a) Components that contact a process fluid containing less than 5.0% highly-reactive volatile organic compounds by weight on an annual average basis are exempt from the requirements of this division (relating to Fugitive Emissions), except for § 115.786(e) and (g) of this title (relating to Recordkeeping Requirements).

(b) The following are exempt from the shaft sealing system requirements of § 115.783(3) of this title (relating to Equipment Standards):

(1) submerged pumps or sealless pumps (e.g., diaphragm, canned, or magnetic-driven pumps); and

(2) pumps, compressors, and agitators installed before July 1, 2003.

(c) The following components are exempt from the requirements of this division:

(1) conservation vents or other devices on atmospheric storage tanks that are actuated either by a vacuum or a pressure of no more than 2.5 pounds per square inch gauge (psig);

(2) components in continuous vacuum service;

(3) valves that are not externally regulated (such as in-line check valves);

(4) any site as defined in § 122.10 of this title (relating to General Definitions) with less than 250 components in volatile organic compound (VOC) service;

(5) components that are insulated, making them inaccessible to monitoring with a hydrocarbon gas analyzer;

(6) sampling connection systems, as defined in 40 Code of Federal Regulations (CFR) §63.161 (January 17, 1997), that meet the requirements of 40 CFR §63.166(a) and (b) (June 20, 1996); and

(7) instrumentation systems, as defined in 40 CFR §63.161 (January 17, 1997), that meet the requirements of 40 CFR §63.169 (June 20, 1996).

(d) All pumps, compressors, and agitators that are equipped with a shaft sealing system that prevents or detects emissions of VOC from the seal are exempt from the monitoring requirement of § 115.781(b) and (c) of this title (relating to General Monitoring and Inspection Requirements). These seal systems may include, but are not limited to, dual seals with barrier fluid at higher pressure than process pressure, seals degassing to vent control systems kept in good working order, or seals equipped with an automatic seal failure detection and alarm system. Submerged pumps or sealless pumps (including, but not limited to, diaphragm, canned, or magnetic driven pumps) may be used to satisfy the requirements of this subsection.

(e) Each pressure relief valve equipped with an upstream rupture disk is exempt from the requirements of § 115.781(b)(8) of this title, provided that the pressure relief valve complies with § 115.725(c) of this title (relating to Monitoring and Testing Requirements). The rupture disk must be replaced as soon as practicable, but no later than 30 calendar days after a failure is detected.

(f) The following valves are exempt from the requirements of § 115.783(5) of this title:

(1) pressure relief valves;

(2) open-ended valves or lines in an emergency shutdown system that are designed to open automatically in the event of an emissions event;

(3) open-ended valves or lines containing materials that would autocatalytically polymerize or would present an explosion, serious overpressure, or other safety hazard if capped or equipped with a double block and bleed system; and

(4) valves rated greater than 10,000 psig.

(g) Any site as defined in § 122.10 of this title with less than 100 valves in highly-reactive volatile organic compound service is exempt from § 115.788 of this title (relating to Audit Provisions).

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