North Dakota Administrative Code › Title 33.1 - Department of Environmental Quality › Article 33.1-24 - Hazardous Waste Management › Chapter 33.1-24-05 - Standards for Treatment, Storage, and Disposal Facilities and for the Management of Specific Hazardous Wastes and Specific Types of Hazardous Waste Management Facilities › AIR EMISSION STANDARDS FOR PROCESS VENTS › Section 33.1-24-05-401 - Definitions

Current through Supplement No. 393, July, 2024
As used in sections
					 33.1-24-05-400 through
					 33.1-24-05-419, all terms not
					 defined herein have the meaning given in North Dakota Century Code chapter
					 23.1-04 and 33.1-24-01 through 33.1-24-05 of this article.
1. "Air stripping operation" is a desorption
				  operation employed to transfer one or more volatile components from a liquid
				  mixture into a gas (air) either with or without the application of heat to the
				  liquid. Pack towers, spray towers, and bubble-cap, sieve, or valve-type plate
				  towers are among the process configurations used for contacting the air and a
				  liquid.
2. "Bottoms receiver" means
				  a container or tank used to receive and collect the heavier bottoms fractions
				  of the distillation feed stream that remain in the liquid phase.
3. "Closed-vent system" means a system that
				  is not open to the atmosphere and that is composed of piping, connections, and,
				  if necessary, flow-inducing devices that transport gas or vapor from a piece or
				  pieces of equipment to a control device.
4. "Condenser" means a heat-transfer device
				  that reduces a thermodynamic fluid from its vapor phase to its liquid
				  phase.
5. "Connector" means flange,
				  screwed, welded, or other joined fittings used to connect two pipelines or a
				  pipeline and a piece of equipment. For the purposes of reporting and
				  recordkeeping, "connector" means flanged fittings that are not covered by
				  insulation or other materials that prevent location of the fittings.
6. "Continuous recorder" means a
				  data-recording device recording an instantaneous data value at least once every
				  fifteen minutes.
7. "Control
				  device" means an enclosed combustion device vapor recovery system, or flare.
				  Any device the primary function of which is the recovery or capture of solvent
				  or other organic for use, reuse, or sale (e.g., a primary condenser on a
				  solvent recovery unit) is not a control device.
8. "Control device shutdown" means the
				  cessation of operation of a control device for any purpose.
9. "Distillate receiver" means a container or
				  tank used to receive and collect liquid material (condensed) from the overhead
				  condenser of a distillation unit and from which the condensed liquid is pumped
				  to larger storage tanks or other process units.
10. "Distillation operation" means an
				  operation, either batch or continuous separating one or more feed streams into
				  two or more exit streams, each exit stream having component concentrations
				  different from those in the feed streams. The separation is achieved by the
				  redistribution of the components between the liquid and vapor phase as they
				  approach equilibrium within the distillation unit.
11. "Double-block and bleed system" means two
				  block valves connected in series with a bleed valve or line that can vent the
				  line between the two block valves.
12. "Equipment" means each valve, pump,
				  compressor, pressure relief device, sampling connection system, open-ended
				  valve or line, or flange or other connector, and any control devices or systems
				  required by sections
				  33.1-24-05-400 through
				  33.1-24-05-419.
13. "First attempt at repair" means to take
				  rapid action for the purpose of stopping or reducing leakage of organic
				  material to the atmosphere using best practices.
14. "Flame zone" means the portion of the
				  combustion chamber in a boiler occupied by the flame envelope.
15. "Flow indicator" means a device that
				  indicates whether gas flow is present in a vent stream.
16. "Fractionation operation" means a
				  distillation operation or method used to separate a mixture of several volatile
				  components of different boiling points in successive stages, each stage
				  removing from the mixture some proportion of one of the components.
17. "Hazardous waste management unit
				  shutdown" means a work practice or operational procedure that stops operation
				  of a hazardous waste management unit or part of a hazardous waste management
				  unit. An unscheduled work practice or operational procedure that stops
				  operation of a hazardous waste management unit or part of a hazardous waste
				  management unit for less than twenty-four hours is not a hazardous waste
				  management unit shutdown. The use of spare equipment and technically feasible
				  bypassing of equipment without stopping operation are not hazardous waste
				  management unit shutdowns.
18. "Hot
				  well" means a container for collecting condensate as in a steam condenser
				  serving a vacuum-jet or steam-jet ejector.
19. "In gas or vapor service" means that the
				  piece of equipment contains or contacts a hazardous waste stream that is in the
				  gaseous state at operating conditions.
20. "In heavy liquid service" means that the
				  piece of equipment is not in gas or vapor service or in light liquid
				  service.
21. "In light liquid
				  service" means that the piece of equipment contains or contacts a waste stream
				  where the vapor pressure of one or more of the organic components in the stream
				  is greater than three-tenths kilopascals at twenty degrees Celsius, the total
				  concentration of the pure organic components having a vapor pressure greater
				  than three-tenths kilopascals at twenty degrees Celsius is equal to or greater
				  than twenty percent by weight, and the fluid is a liquid at operating
				  conditions.
22. "In situ sampling
				  systems" means nonextractive samplers or inline samplers.
23. "In vacuum service" means that equipment
				  is operating at an internal pressure that is at least five kilopascals below
				  ambient pressure.
24. "Malfunction"
				  means any sudden failure of a control device or a hazardous waste management
				  unit or failure of a hazardous waste management unit to operate in a normal or
				  usual manner, so that organic emissions are increased.
25. "Open-ended valve or line" means any
				  valve, except pressure release valves, having one side of the valve seat in
				  contact with hazardous waste and one side open to the atmosphere, either
				  directly or through open piping.
26. "Pressure release" means the emission of
				  materials resulting from the system pressure being greater than the set
				  pressure of the pressure release device.
27. "Process heater" means a device that
				  transfers heat liberated by burning fuel to fluids contained in tubes,
				  including all fluids except water that are heated to produce steam.
28. "Process vent" means any open-ended pipe
				  or stack that is vented to the atmosphere either directly, through a
				  vacuum-producing system, or through a tank (e.g., distillate receiver,
				  condenser, bottoms receiver, surge control tank, separator tank, or hot well)
				  associated with hazardous waste distillation, fractionation, thin-film
				  evaporation, solvent extraction, or air or steam stripping
				  operations.
29. "Repaired" means
				  that equipment is adjusted, or otherwise altered, to eliminate a
				  leak.
30. "Sampling connection
				  system" means an assembly of equipment within a process or waste management
				  unit used during periods of representative operation to take samples of the
				  process of waste fluid. Equipment used to take nonroutine grab examples is not
				  considered a sampling connection system.
31. "Sensor" means a device that measures a
				  physical quantity or the change in a physical quantity, such as temperature,
				  pressure, flow rate, pH, or liquid level.
32. "Separator tank" means a device used for
				  separation of two immiscible liquids.
33. "Solvent extraction operation" means an
				  operation or method of separation in which a solid or solution is contacted
				  with a liquid solvent (the two being mutually insoluble) to preferentially
				  dissolve and transfer one or more components into the solvent.
34. "Start-up" means the setting in operation
				  of a hazardous waste management unit or control device for any
				  purpose.
35. "Steam stripping
				  operation" means a distillation operation in which vaporization of the volatile
				  constituents of a liquid mixture takes place by the introduction of steam
				  directly into the charge.
36.
				  "Surge control tank" means a large-sized pipe or storage reservoir sufficient
				  to contain the surging liquid discharge of the process tank to which it is
				  connected.
37. "Thin-film
				  evaporation operation" means a distillation operation that employs a heating
				  surface consisting of a large diameter tube that may be either straight or
				  tapered, horizontal or vertical. Liquid is spread on the tube wall by a
				  rotating assembly of blades that maintain a close clearance from the wall or
				  actually ride on the film of liquid on the wall.
38. "Vapor incinerator" means any enclosed
				  combustion device that is used for destroying organic compounds and does not
				  extract energy in the form of steam or process heat.
39. "Vented" means discharged through an
				  opening, typically an open-ended pipe or stack, allowing the passage of a
				  stream of liquids, gases, or fumes into the atmosphere. The passage of liquids,
				  gases, or fumes is caused by mechanical means such as compressors or
				  vacuum-producing systems or by process-related means such as evaporation
				  produced by heating and not caused by tank loading and unloading (working
				  losses) or by natural means such as diurnal temperature changes.
General Authority:
NDCC 23.1-04-03; S.L.
						2017, ch. 199, § 1
Law Implemented:
NDCC 23.1-04-03,
						23.1-04-05; S.L. 2017, ch. 199, §
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