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Air Discharges


Air Discharges

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									                                    AIR DISCHARGES

    n addition to the requirements set out in the       PROCESS DETAILS
    general instructions, the following information,
    where applicable, should be provided as part of     Describe the manufacturing processes to be
    EPA works approval or licence application           employed including:
relating to AIR discharges.
                                                        (a)    Flowsheet
OUTLINE OF PROPOSAL                                     (b)    Process and instrumentation diagrams
                                                        (c)    Material balance
(a)    Process description                              (d)    Material safety data sheets for all chemicals
(b)    Treatment plant description                             used or manufactured.
(c)    The proposed source, nature, composition         (e)    Contingency procedures to avoid
       and rate of waste input and/or discharge                discharges resulting from process failure
(d)    Impact of the proposal on the environment               and shutdown.
                                                        (f)    Chemical storage and handling
                                                        WASTE MINIMISATION
In addition to the A4 site plan (requested in general
instructions) please provide two (2) large scale        (a)    A preferred waste management plan by
drawings. All plans should be drawn to scale and               which the proponent will minimise the
indicate the following:                                        production of waste.
                                                        (b)    Information on different process options
(a)    Dimensions of boundaries and site features              applicable to the industry and details of the
(b)    Scale and direction of north                            options examined.
(c)    The exact location of proposed discharge         (c)    Details of proposed waste reclamation and
       points to the environment (on A4 site plan              recycling.
       as indicated above). Please number all
       discharge points.                                RISK ASSESSMENT
(d)    Elevations of buildings and discharge
       points.                                          (a)    An assessment of the likely risk of plant
(e)    Name and exact location of equipment used               failure causing and environmental hazard.
       in the processing, treatment and/or              (b)    A description of plant safety measures to
       discharge of waste.                                     avoid an environmental hazard.
(f)    Name and exact location of equipment
       giving rise to such waste.                       STACK EMISSION DETAILS
(g)    Land use within 2000 metres of the site
       boundary.                                        For each discharge point being applied for, please
(h)    Location of nearest residences.                  complete the table attached.
Please note, all discharge points on scheduled         • Engineering drawings and manufacturers'
premises require works approval. Refer to the            brochures.
Environment Protection (Scheduled Premises and         • Instrumentation to monitor performance (i.e.
Exemptions) Regulations 1995 for further                 emissions and satisfactory operation of unit).
definitions.                                           • Any pre or post treatment needed to supplement
                                                         main control device, e.g. condensers, cyclones,
ENVIRONMENTAL IMPACT OF THE                              mist eliminators.
                                                       Please note, specific information for fabric filters,
Provide details of:                                    afterburners and wet scrubbers is listed later.

The calculated ground level concentration of every     The disposal of any collected material (i.e. what
waste proposed to discharged to air under normal       happens to bag filter dust or scrubbing liquor from
and maximum operating conditions and start up          a wet scrubber etc.).
and shutdown conditions.
                                                       Arrangements for the operation and management of
Ground level concentrations are to be calculated       the systems, training of plant operators and the
using the procedure described in the Authority's       ongoing involvement of consultants and equipment
publication 'The Ausplume Gaussian Plume               suppliers (if any).
Dispersion Model' (Computer package).
                                                       Maintenance procedures, in particular, precautions
Copies of the Model may be purchased from the          to avoid occasional additional discharges to the
Authority or alternatively, a consultant who has the   environment resulting from plant breakdowns,
model may be employed to do the calculations. The      power failures, accidental discharges and other
data should be presented for each discharge and for    reasonably foreseeable situations. (Include details
a multistack arrangement which would lead to           of process instrumentation, alarms and interlocks
maximum potential emission characteristics at the      to control or stop processes).
boundary of the premises.
                                                       CONTROL EQUIPMENT - Specific details for
Results must be presented with all relevant input      commonly used devices.
data, including any assumptions made in
establishing model conditions, effects of existing     FABRIC FILTER
on-site discharges and existing loadings from
neighbouring industries.                               (a)    Model number
                                                       (b)    Cleaning mechanism: dust collection and
Summary of the environmental impact of the                    disposal.
proposal, e.g. what effects will emissions have on     (c)    Air to cloth ratio
the receiving environment.                             (d)    Bag material
                                                       (e)    Air flow rate
POLLUTION CONTROL EQUIPMENT                            (f)    Inlet gas temperature
                                                       (g)    Moisture content of air/dew point
Provide details of control equipment with              (h)    Mass loading
discharges to the environment.                         (i)    Particle size distribution
                                                       (j)    Opacity/pressure drop monitoring
Pollution control equipment (see under CONTROL         (k)    Type/nature of particles to be filtered
EQUIPMENT)                                             (l)    Noise level (particularly during cleaning)

•   Type.                                              AFTERBURNER
•   Manufacturer.
•   Performance: destruction or removal efficiency.    (a)    Foul air flow and quality (calorific value if
•   Design basis: calculations, empirical data from           any)
    similar applications.                              (b)    Dimensions of combustion chamber
                                                              (primary and secondary)
(c)    Inlet temperature                               (b)     Scrubbing liquor:
(d)    Temperature and residence time                  • flow rate
(e)    Calculated gas flow rate                        • pH
(f)    Burner size                                     • temperature
(g)    Instrumentation and interlock specifications    • quality (concentration of scrubbing liquid)
(h)    Excess air requirement                          • means of disposal
(i)    Will solid or liquid particles be incinerated   (c)     Scrubber:
(j)    Details of waste heat recovery, including       • materials of construction
       gas temperatures                                • dimensions
(k)    Fan specifications                              • spray mechanism
(l)    Ducting design
                                                       • mist elimination mechanism
                                                       • packing: type, size, material, depth
                                                       (d)     Design basis:
                                                       • calculation for Htu and Ntu equilibrium data
(a)   Gas stream:
                                                       • empirical data results from units operating
• flow rate
• wastes to be scrubbed including dust loading
                                                       • throat velocity if venturi
• temperature
                                                       Where an application contains insufficient
                                                       information, the Authority will request further
                                                       information.. The application cannot be acted
                                                       upon until the further information sought is
                                                       received and accepted as adequate.
                                                 AIR DISCHARGES

                                             AIR DISCHARGES – PART 1

       T hi s t ab l e i s a n at tac hm e nt t o t h e ‘ Add i ti o na l I n f o rma t i o n ’ s h e et s r el a t i n g t o A IR

                   D ET A ILS OF D ISC HA R GE P O IN TS ( DP) A S N UMB ER E D O N S ITE PLA N

                               DP 1                      2                    3                     4                    5
Fuel used and alternative (if any)

Maximum sulphur content of fuels, as % by weight

Maximum fuel mass rates, in kilograms per hour

Calorific value of fuels, in kilojoules per kilogram

Power rating of all electrical equipment, in kilovolt-amperes

Grate area (of solid fuel boiler, heater or incinerator), in square metres (to two decimal places)

Incinerator – maximum rate of disposal, in kilograms per hour

Volume of stationary container, in cubic metres

Aggregate number of hours of discharge per week

Height of discharge point above ground level in metres (to one decimal place)

Temperature of exhaust gases at the outlet in oC

Volume of water vapour in cubic metres per minute at discharge temperature

Volume of dry gas in cubic metres per minute at discharge temperature

Geometric shape of outlet cross-section (circular, rectangular or square)

Cross-sectional area of outlet in square metres (to two decimal places)

Velocity of discharge at point of discharge in metres per second (to one decimal place)

Provide details of wastes which are not discharged freely and vertically

Describe odorous wastes, e.g. ‘phenolic’

*Process weights in kilograms per minute

*PROCESS WEIGHT is the total weight of all materials introduced into any specific process, which may
discharge contaminants into the atmosphere. Solid fuels charged will be considered as part of the process
weight, but liquid and gaseous fuels and air shall not. To arrive at a process weight in terms of kilograms per
minute, divide the total (maximum) process weight by the number of minutes in ONE COMPLETE OPERATION
from the beginning of any given process to the completion thereof, excluding any time during which the
equipment is idle. Continuous process weights should be based on daily values obtained over a 1440 minute
(24 hour) period. Operations such as a paint spray booth or grinding stations are best indicated by the
maximum total time of ACTUAL USE per day.

                                                      EPA Victoria
                                             AIR DISCHARGES

                                        AIR DISCHARGES – PART 2

                   P RO V ID E D ETA I L S OF A L L CAL C ULATI O N S O N A S EP A RAT E SHE ET

  R at e o f dis ch a rg e of wast e i n g rams p e r mi n ute ( t o t h re e si g ni fi can t di git s, b ut n ot mo r e
                                            than one decimal place)
  Waste Type               DP 1                   2                    3                     4                    5

Where the particulate wastes contain silica, asbestos or the elements fluorine, chlorine, antimony, arsenic,
cadmium, lead, mercury, beryllium, nickel or their compounds, or carbon black, indicate the type and rate of
discharge for each (to three significant digits but not more than one decimal place)

Enter size          Rate of discharge of particulate waste in grams per minute for each size fraction in terms
fraction in         of aerodynamic diameter (to three significant digits, but not more than two decimal
micrometres         places)

* ODOUR LEVEL refers to the ration obtained when the discharge is emission tested according to the EPA
approved method. If this information is not available, the words ‘NOT KNOWN’ should be entered under this

                                                 EPA Victoria

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