voc and no x rules related to the oil and natural gas industries air quality division bob gifford...
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VOC and NOx RulesRelated to the
Oil and Natural Gas Industries
Air Quality Division
Bob GiffordAir Quality Specialist, Air Quality Division
Presented to Environmental Trade Fair2013
Air Quality Division • Oil and Gas Rules • BG • May 1, 2013• Page 2
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.
Air Quality Division • Oil and Gas Rules • BG • May 1, 2013• Page 3
Water Separators
Control to 0.5 pounds per square inch (psia) vapor pressure or less if emissions are over 100 pounds/day
Chapter 115, Subchapter B, Division 3, §115.132
Beaumont – Port Arthur (BPA) Area
Dallas – Fort Worth (DFW) Area:
El Paso County
Houston-Galveston-Brazoria (HGB) Area
Air Quality Division • Oil and Gas Rules • BG • May 1, 2013• Page 4
Liquid Loading and Transport Vessels
Control by 90% or vapor balance if loading over 20,000 gallons/day
Chapter 115, Subchapter C, Division 1, §115.212
BPA
DFW
HGB
Air Quality Division • Oil and Gas Rules • BG • May 1, 2013• Page 5
Storage Tanks
90% control of crude oil and condensate tanks in HGB 95% in DFW
Chapter 115, Subchapter B, Division 1, §115.112
Air Quality Division • Oil and Gas Rules • BG • May 1, 2013• Page 6
Gas Dehydrators
Control by 90% or to 20 parts per million by volume (ppmv) if emissions are over 100 pounds/day
Chapter 115, Subchapter B, Division 2, §115.122
Air Quality Division • Oil and Gas Rules • BG • May 1, 2013• Page 7
Vents at Gas Processing Plants
Control by 90% or to 20 ppmv if emissions are over 100 pounds/day
If not regulated by another rule in Chapter 115
Chapter 115, Subchapter B, Division 2, §115.122
Air Quality Division • Oil and Gas Rules • BG • May 1, 2013• Page 8
Leak Repair at Gas Processing Plants
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
Chapter 115, Subchapter D, Division 3,
Air Quality Division • Oil and Gas Rules • BG • May 1, 2013• Page 9
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
Air Quality Division • Oil and Gas Rules • BG • May 1, 2013• Page 10
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
Air Quality Division • Oil and Gas Rules • BG • May 1, 2013• Page 11
Statewide NOx Regulations
• Chapter 117, Subchapter E, Division 3• Gas-fired heaters rated 0.4 to 2 MMBtu/hr
– 0.037 lb NOx/MMBtu– §117.3205
Air Quality Division • Oil and Gas Rules • BG • May 1, 2013• Page 12
East Texas Engines
Chapter 117, Subchapter E, Division 4, §117.3310
33 East Texas Counties
Air Quality Division • Oil and Gas Rules • BG • May 1, 2013• Page 13
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
Air Quality Division • Oil and Gas Rules • BG • May 1, 2013• Page 14
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
Air Quality Division • Oil and Gas Rules • BG • May 1, 2013• Page 15
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
Air Quality Division • Oil and Gas Rules • BG • May 1, 2013• Page 16
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
Air Quality Division • Oil and Gas Rules • BG • May 1, 2013• Page 17
Industrial Cleaning Solvents
New rules in Chapter 115, Subchapter E, Division 6
Compliance required by March 1, 2013
Air Quality Division • Oil and Gas Rules • BG • May 1, 2013• Page 18
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
Air Quality Division • Oil and Gas Rules • BG • May 1, 2013• Page 19
Contact
Bob Gifford
512-239-3149