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VOC and NO x Rules Related to the Oil and Natural Gas Industries. Bob Gifford Air Quality Specialist, Air Quality Division Presented to Environmental Trade Fair 2013. Air Quality Division . Overview.

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voc and no x rules related to the oil and natural gas industries

VOC and NOx RulesRelated to the Oil and Natural Gas Industries

Bob GiffordAir Quality Specialist, Air Quality Division

Presented to Environmental Trade Fair

2013

Air Quality Division

overview
Overview
  • Control strategies reduce ozone by limiting volatile organic compounds (VOC) and nitrogen oxides (NOx) emissions from stationary sources.
    • Rules in Title 30 Texas Administrative Code
    • Chapters 115 (VOC) and 117 (NOx)
  • Rules affecting oil and gas (O&G) production and gas processing sites limit VOC and NOx emissions from:
  • water separators;
  • liquid loading;
  • dehydrators;
  • storage tanks;
  • gas processing equipment;
  • cleaning solvents;
  • heaters; and
  • engines.
water separators
Water Separators

Dallas – Fort Worth (DFW) Area:

Chapter 115, Subchapter B, Division 3, §115.132

El Paso County

Control to 0.5 pounds per square inch (psia) vapor pressure or less if emissions are over 100 pounds/day

Beaumont – Port Arthur (BPA) Area

Houston-Galveston-Brazoria (HGB) Area

liquid loading and transport vessels
Liquid Loading and Transport Vessels

DFW

Chapter 115, Subchapter C, Division 1, §115.212

Control by 90% or vapor balance if loading over 20,000 gallons/day

BPA

HGB

storage tanks
Storage Tanks

Chapter 115, Subchapter B,

Division 1, §115.112

90% control of

crude oil and condensate tanks

in HGB

95% in DFW

gas dehydrators
Gas Dehydrators

Chapter 115, Subchapter B, Division 2, §115.122

Control by 90% or to 20 parts per million by volume (ppmv) if emissions are over 100 pounds/day

vents at gas processing plants
Vents at Gas Processing Plants

Chapter 115, Subchapter B, Division 2, §115.122

Control by 90% or to

20 ppmv if emissions

are over 100 pounds/day

If not regulated by another rule in Chapter 115

leak repair at gas processing plants
Leak Repair at Gas Processing Plants

Chapter 115, Subchapter D, Division 3,

Rules apply if over 250

components contact material

over 1.0% VOC by weight

Scheduled inspections:

weekly to yearly

Repair schedule: from one day to next shutdown depending on ability to repair while on-line

production compressor gas processing no x regulations
Production, Compressor, & Gas Processing NOx Regulations

Nonattainment Area Minor Sources

  • Gas-fired boilers and heaters over 2 million British thermal units (MMBtu) per hour
    • 0.036 lb NOx/MMBtu
    • §117.2010 HGB, if less than 25 tons per year (tpy) NOx
  • Gas-fired engines rated 50 horsepower (hp) or more
    • 0.5 to 0.7 grams NOx per horsepower-hour (g NOx/hp-hr) depending on design and install date
    • §117.2010 HGB
    • §117.2110 DFW (less than 50 tpy NOx)
  • Diesel engines rated 50 hp or more
    • 2.8 to 11.0 g NOx/hp-hr depending on size, location, and install date
    • §117.2010 HGB, §117.2110 DFW
production compressor gas processing no x regulations1
Production, Compressor, & Gas Processing NOx Regulations

Nonattainment Area Major Sources

  • Boilers and Heaters
    • 0.020 to 0.10 lb NOx/MMBtu depending on design and location
    • §117.110 BPA (50 tpy NOx or more)
    • §117.310 HGB, and §117.410 DFW
  • Gas-fired engines rated 50 hp or more
    • 0.5 to 2.0 g NOx/hp-hr depending on design, size, and location
    • §117.310 and §117.410
  • Diesel engines
    • 2.8 to 11.0 g NOx/hp-hr depending on size and location
    • §117.310 and §117.410
statewide no x regulations
Statewide NOx Regulations
  • Chapter 117, Subchapter E, Division 3
  • Gas-fired heaters rated 0.4 to 2 MMBtu/hr
    • 0.037 lbNOx/MMBtu
    • §117.3205
east texas engines
East Texas Engines

Chapter 117, Subchapter E, Division 4, §117.3310

33 East Texas Counties

east texas engines nox regulations
East Texas Engines NOx Regulations
  • Gas-fired rich-burn engines
  • 240 to 499 hp
    • 1.0 g NOx/hp-hr
    • §117.3310
  • 500 hp or more
    • 0.5 g NOx/hp-hr
    • §117.3310
storage tank rule
Storage Tank Rule
  • Revisions to 30 Texas Administrative Code Chapter 115, Subchapter B, Division 1
  • New rules in the DFW area
    • Require controls on crude oil and condensate tanks prior to custody transfer (upstream)
    • Require 95% control of VOC emissions
    • Restrictions on floating roof tanks
    • Compliance date March 1, 2013
crude oil and condensate
Crude Oil and Condensate
  • Anticipated controls
    • Vapor recovery unit
      • Larger sources
      • Economical
    • Flare
      • Smaller sources
      • Must meet 40 Code of Federal Regulations §60.18
  • Many sources already controlled
  • Testing required for controls
    • Efficiency demonstration
    • Flare design verification
crude oil and condensate1
Crude Oil and Condensate
  • Produced water tanks
    • Applicability explicitly based on condensate rather than liquid throughput in the tank
    • Vaporizes as if all condensate
    • Only applies prior to custody transfer
industrial cleaning solvents
Industrial Cleaning Solvents

New rules in Chapter 115, Subchapter E, Division 6

Compliance required by March 1, 2013

industrial cleaning solvents1
Industrial Cleaning Solvents
  • Applies to solvent cleaning operations on a property with at least 3.0 tpy of cleaning solvent VOC emissions
    • Does not apply to residential or janitorial cleaning
    • Solvent cleaning operations that are subject to or in compliance with another Chapter 115 regulation are exempt from Division 6
  • Control options:
    • 0.42 pound of VOC per gallon of solution
    • 8.0 millimeters of mercury vapor pressure
    • 85% overall control efficiency
contact
Contact

Bob Gifford

[email protected]

512-239-3149

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