R 336.1643 Emission of volatile organic compounds from existing compressors in the oil and natural gas industry located in the 2015 ozone nonattainment areas.

Rule 643. (1) As used in this rule: (a) “Centrifugal compressor” means any machine for raising the pressure of a natural gas by drawing in low-pressure natural gas and discharging significantly higher-pressure natural gas by means of mechanical rotating vanes or impellers. Screw, sliding vane, and liquid ring compressors are not centrifugal compressors for the purposes of this rule. (b) “Reciprocating compressor” means a piece of equipment that increases the pressure of a process gas by positive displacement, employing linear movement of the driveshaft. (2) A person shall not cause or allow the emission of any volatile organic compound from the use of existing compressors utilized in oil and natural gas production and natural gas processing segments of the oil and natural gas industry, in excess of the limitations of this rule that are both: (a) Located in the 2015 ozone nonattainment areas. (b) Located between the wellhead and point of custody transfer to the natural gas transmission and storage segment, and are either of the following: (i) A single centrifugal compressor using wet seals. (ii) A reciprocating compressor. (3) The provisions of this rule do not apply to the following: (a) Individual reciprocating compressor, or an individual centrifugal compressor using wet seals located at a well site, or an adjacent well site, and is servicing more than 1 well site. (b) Individual centrifugal compressor using dry seals. (4) A person shall not cause or allow the emission of any volatile organic compound from the centrifugal compressors, unless the following provisions are met: (a) Emissions from a centrifugal compressor wet seal fluid degassing system must be reduced by 95%. (b) When emissions from a centrifugal compressor are controlled by a control device, the following requirements must be met: (i) The wet seal fluid degassing system must be equipped with a cover that meets the following requirements: (A) The cover and all openings on the cover must form a continuous impermeable barrier over the entire surface area of the liquid in the wet seal fluid degassing system. (B) Each cover opening must be secured in a closed, sealed position, for example, covered by a gasketed lid or cap, except during those times when it is necessary to use an opening as follows: (1) To inspect, maintain, repair, or replace equipment. (2) To vent gases or fumes from the unit through a closed vent collection system that meets the cover requirements and closed vent system requirements of R 336.1640. (ii) The closed vent system must be routed to a process or a control device that is designed to route all gases, vapors, and fumes emitted from the volatile organic compound emissions source to a control device or to a process. (iii) A continuous parameter monitoring system must be properly installed and operated to monitor all relevant control device operational variables. (5) A person shall not cause or allow the emission of any volatile organic compound from reciprocating compressors, unless either of the following provisions are met: (a) Compressor rod packing must be replaced within 36 months from the date of the most recent rod packing. (b) Rod packing emissions must be routed to a process by using a closed vent collection system that operates under negative pressure and meets the cover requirements and closed vent system requirements of R 336.1640. The closed vent system must be designed to route all volatile organic compound containing gases, vapors, and fumes to the process. (6) A person operating a compressor shall obtain current information and maintain records for all requirements in sufficient detail to determine compliance, which must be made available to the department upon request. The following methods must be used: (a) An identification of each existing centrifugal compressor using a wet seal system. (b) Records of deviations where the centrifugal or reciprocating compressor was not operated in compliance with requirements. (c) Inlet gas flow rate. (d) Records of the maintenance and repair log. (e) Records of the visible emissions test following return to operation from a maintenance or repair activity. (f) Records of the cumulative number of hours of operation or number of months since the previous replacement of the reciprocating compressor rod packing. (g) Records of any control device operational variables monitored as part of the required continuous parameter monitoring system.