Hawaii Administrative Rules › Title 11 - DEPARTMENT OF HEALTH › Subtitle 1 - GENERAL DEPARTMENTAL PROVISIONS › Chapter 261.1 - HAZARDOUS WASTE MANAGEMENT: IDENTIFICATION AND LISTING OF HAZARDOUS WASTE › Part 261 - IDENTIFICATION AND LISTING OF HAZARDOUS WASTE › Subpart AA - Air Emission Standards for Process Vents › Section 11-261.1031 - Definitions

Current through June, 2024
As used in this subpart, all terms not defined herein
						shall have the meaning given them in the Resource Conservation and Recovery Act
						and parts 260-266.
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. Packed 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.
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.
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.
Condenser
means a heat-transfer device
						that reduces a thermodynamic fluid from its vapor phase to its liquid
						phase.
Connector
means flanged, 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.
Continuous recorder
means a
						data-recording device recording an instantaneous data value at least once every
						15 minutes.
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 solvents or other organics for
						use, reuse, or sale (e.g., a primary condenser on a solvent recovery unit) is
						not a control device.
Control device shutdown
means the
						cessation of operation of a control device for any purpose.
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.
Distillation operation
means an
						operation, either batch or continuous, separating one or more feed stream(s)
						into two or more exit streams, each exit stream having component concentrations
						different from those in the feed stream(s). The separation is achieved by the
						redistribution of the components between the liquid and vapor phase as they
						approach equilibrium within the distillation unit.
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.
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 this subpart.
Flame zone
means the portion of the
						combustion chamber in a boiler occupied by the flame envelope.
Flow indicator
means a device that
						indicates whether gas flow is present in a vent stream.
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.
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.
Hazardous secondary material management unit
						shutdown
means a work practice or operational procedure that stops
						operation of a hazardous secondary material management unit or part of a
						hazardous secondary material management unit. An unscheduled work practice or
						operational procedure that stops operation of a hazardous secondary material
						management unit or part of a hazardous secondary material management unit for
						less than 24 hours is not a hazardous secondary material management unit
						shutdown. The use of spare equipment and technically feasible bypassing of
						equipment without stopping operation are not hazardous secondary material
						management unit shutdowns.
Hot well
means a container for
						collecting condensate as in a steam condenser serving a vacuum-jet or steam-jet
						ejector.
In gas/vapor service
means that the
						piece of equipment contains or contacts a hazardous secondary material stream
						that is in the gaseous state at operating conditions.
In heavy liquid service
means that the
						piece of equipment is not in gas/vapor service or in light liquid
						service.
In light liquid service
means that the
						piece of equipment contains or contacts a material stream where the vapor
						pressure of one or more of the organic components in the stream is greater than
						0.3 kilopascals (kPa) at 20 °C, the total concentration of the pure organic
						components having a vapor pressure greater than 0.3 kilopascals (kPa) at 20
						°C is equal to or greater than 20 percent by weight, and the fluid is a
						liquid at operating conditions.
In situ sampling systems
means
						nonextractive samplers or in-line samplers.
In vacuum service
means that equipment
						is operating at an internal pressure that is at least 5 kPa below ambient
						pressure.
Malfunction
means any sudden failure of
						a control device or a hazardous secondary material management unit or failure
						of a hazardous secondary material management unit to operate in a normal or
						usual manner, so that organic emissions are increased.
Open-ended valve or line
means any
						valve, except pressure relief valves, having one side of the valve seat in
						contact with hazardous secondary material and one side open to the atmosphere,
						either directly or through open piping.
Pressure release
means the emission of
						materials resulting from the system pressure being greater than the set
						pressure of the pressure relief device.
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.
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 secondary material distillation, fractionation,
						thin-film evaporation, solvent extraction, or air or steam stripping
						operations.
Repaired
means that equipment is
						adjusted, or otherwise altered, to eliminate a leak.
Sampling connection system
means an
						assembly of equipment within a process or material management unit used during
						periods of representative operation to take samples of the process or material
						fluid. Equipment used to take non-routine grab samples is not considered a
						sampling connection system.
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.
Separator tank
means a device used for
						separation of two immiscible liquids.
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.
Startup
means the setting in operation
						of a hazardous secondary material management unit or control device for any
						purpose.
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.
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.
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.
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.
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.