Other - Compressors
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Last updated: 10 months ago
Other - Compressors
- Q560. For Component Count Methodology 1 (98.233(r)), are one half inch in diameter tubing systems included in the totals shown on Tables W-1B and W-1C? May actual component counts be used instead of average component counts in Tables W-1B and W-1C?
- Q561. In regard to emissions calculations for reciprocating compressor venting, specifically for production, using Equation W-29, why and how would I use Section 98.233(u) to estimate volumetric GHGi emissions from volumetric natural gas emissions?
- Q562. What are the procedures for using 98.233(o) equations W-22 and W-23 for calculating emissions for centrifugal compressor venting? Are the calculations used independently of each other?
- Q563. Is the reference in 98.233(p)(10) to paragraph (u) correct?
- Q564. For reciprocating compressor venting emissions controlled by a device other than a VRU (e.g., flared), must they be measured or estimated under Subpart W? Should these emissions be estimated using the flare stack methodology in 98.233( n )?
- Q565. How should vented emissions be determined for compliance with 98.233 where emissions from multiple vents on a compressor are routed through the same vent line such that the individual vent emissions cannot be measured?
- Q566. In regards to developing the compressor emission factors for measurements conducted in the "as found" mode and applied to other compressors, is the "reporter" the facility, or all facilities operated by the same company?
- Q567. Does a rotary screw compressor meet the definition of a centrifugal compressor in subpart W?
- Q568. If centrifugal and reciprocating compressor seals, rod packing, isolation valves, and blowdown valves all vent to a flare, must these emissions still be measured or can the flare gas composition and volume be used to estimate emissions?
- Q569. Do we have to calculate and report emissions from dry seals?
- Q570. Where should we use the emission factor determined using equations W-27 and W-28 to calculate the emissions from reciprocating compressors?
- Q571. For centrifugal compressors where should to emission factor calculated in equations W-23 and W-24 be used in the calculation of final emissions?
- Q572. Should direct measurements be taken if a centrifugal compressor is found in non-operating pressurized mode during the leak survey? Are emissions from this mode subject to reporting?
- Q573. If a site has EOR compressors that handle critical phase CO2 for EOR, are they included?
- Q574. If a site has EOR compressors that handle to sub-critical phase CO2 for EOR, are they excluded?
- Q575. Do vapors leaving sour seal oil traps need to be measured? What is the measurement requirement for a compressor where a blind flange is installed before is taken off-line during a year but not kept in place for the entire 3-year period?
- Q718. Will EPA approve the use of BAMM relating to the measurement of isolation valves at compressors in the shut down depressurized mode that are to be measured at least once every three calendar years?
- Q750. Will EPA approve the use of Subpart W Best Available Monitoring Methods (BAMM) relating to the measurement of compressor vents routed to flare?