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Elements and Performance Criteria

  1. Confirm stack sampling/testing requirements with supervisor
  2. Assist with site liaison
  3. Prepare for stack sampling/testing
  4. Assist with site inspection and preliminary tests
  5. Conduct sampling and in-situ tests
  6. Finalise stack sampling/testing
  7. Process and interpret data
  8. Maintain a safe work environment

Required Skills

Required skills

Required skills include

planning and preparing for field activities

communicating effectively with site personnel and negotiating access and support

observational and descriptive skills

recognising hazards assessing risks and using appropriate safe work methodsequipment

collecting representative samples of stationary source emissions in accordance with a sampling planprocedures standards or instructions

using appropriate techniques to preserve the integrity of samples and transport them safely

demonstrating correct and safe use of stack sampling equipment and analysers including setup preuse checks calibration and performance checks

using stack testing equipmentanalysers to obtain reliable quantitative results

identifying and rectifying basic instrument faults

identifying atypical data and samples and taking appropriate action

solving technical problems and responding effectively to changedunforeseen circumstances

seeking advice when issuesproblems are beyond scope of competenceresponsibility

maintaining cleaning decontaminating sampling equipment

completing accurate records of sampling test data and results

writingcompiling concise and accurate reports

following requirements for the disposal of waste and the preservation of the environment

working safely

Required knowledge

Required knowledge includes

specific legislation policies standards and codes of practice related to air qualitypollution and monitoring of stationary source emissions

terminology for atmospheric science sampling and testing of stationary source emissions

properties of air pollutants such as

particulates eg inorganics and organics and metals

inorganic gases eg CO CO NOx SOx ammonia acid rain and halogens

volatile organics

localised meteorology and dispersion of air pollutants

ideal gas behaviour principles of fluid flow through ducts and effects of bends and orifices

principles of stationary source emissions sampling particles common gases and compounds and associated sampling equipment

stack dimensions source parameters and the selection of sampling planes number and location of sampling points

isokinetic conditions and effect of fluctuations in source parameters on results

principles of emission monitoring particles and common gases and associated analysers

function of key components operating principles of common stack samplinganalyser trains

common procedureequipment problems leading to atypical dataresults

common process problems leading to atypical test results eg high oxygen readings may indicate a hole in the stack

labelling and traceability of samples and management of large volumes of data

hazards and risks associated with stationary source emissions

safe work methods and equipment requirements for safe work platforms and services eg AS Fixed platforms walkways stairways and ladders Design construction and installation personal protective equipment relevant health safety and environment requirements and procedures

Evidence Required

Overview of assessment

Competency must be demonstrated in the ability to perform consistently at the required standard

Critical aspects for assessment and evidence required to demonstrate competency in this unit

Assessors must be satisfied that the candidate can competently and consistently apply the skills covered in this unit of competency in new and different situations and contexts Critical aspects of assessment and evidence include

demonstrating an understanding of the legislative and regulatory framework for air quality

using accurate terminology to describe air quality parameters and stack samplingtesting

interpreting and applying stack samplingmonitoring plans samplingtest methods and standards

operating maintaining andor calibrating stack sampling and testing equipment to obtain representative stack samples and produce consistently valid and accurate results

interpreting gross features of data identifying atypical results and making relevant conclusions

calculating results using appropriate unitsprecision

providing accurate complete records of sampling and testing observations data and results

working safely and follow relevant legislative requirements for the disposal of waste and the preservation of the environment

Context of and specific resources for assessment

This unit of competency is to be assessed in the workplace or a simulated workplace environment

Assessment should emphasise a workplace context and procedures found in the candidates workplace

This unit of competency may be assessed with

MSLA Perform chemical tests and procedures

MSL974003A Perform chemical tests and procedures

MSSA Perform sampling and testing of air

MSS025009A Perform sampling and testing of air.

The competencies covered by this unit would be demonstrated by an individual working alone or as part of a team

Resources may include

Vehicles stack samplingtest equipment analysers reagents gases safety equipment camera consumables logbooks and data loggers and computers

safety procedures samplingtest methods standards and equipment manuals

Method of assessment

The following assessment methods are suggested

inspection of stack samples collected by the candidate

review of stack measurements test results calculations and observations produced by the candidate

review of samplingtesting records and reports completed by the candidate

feedback from supervisor about the candidates ability to consistently apply enterprise procedures and work safely

oral and written questioning to check the candidates understanding of the principles of stack samplingtesting operation of stack sampling equipment test instrumentsanalysers and processing of data

observation of the candidate performing a range of stack sampling and testing tasks

In all cases practical assessment should be supported by questions to assess underpinning knowledge and those aspects of competency which are difficult to assess directly

Where applicable reasonable adjustment must be made to work environments and training situations to accommodate ethnicity age gender demographics and disability

The language literacy and numeracy demands of assessment should not be greater than those required to undertake the unit of competency in a worklike environment

Guidance information for assessment


Range Statement

Codes of practice

Where reference is made to industry codes of practice, and/or Australian/international standards, it is expected the latest version will be used

Legislation, standards, codes, procedures and/or enterprise requirements

Legislation, standards, codes, procedures and/or enterprise requirements may include:

federal legislation, such as

Environment Protection and Biodiversity Conservation Act 1999

state/territory government legislation and regulations and local government by-laws, policies, and plans dealing with:

land use, acquisition, planning and protection

environmental protection

pollution and contaminated sites

Australian and international standards, such as:

AS ISO 14050:1999 Environmental management - Vocabulary

AS/NZS ISO 14000 Basic Set:2007 Environmental management basic set

AS 4323.1:1995 Stationary source emissions - Selection of sampling positions

AS 4323.2:1995 Stationary source emissions - Determination of total particulate matter - Isokinetic manual sampling - Gravimetric method

ISO 10780:1994 Stationary source emissions - Measurement of velocity and volume flowrate of gas stream in ducts

US Environmental Protection Authority (EPA) methods, such as:

Method 4 Determination of moisture content in stack gases

Method 7E Determination of nitrogen oxides emissions from stationary sources (instrumental analyser procedure)

enterprise sampling and monitoring protocols

equipment manuals and warranties, supplier catalogue and handbooks

government policy (e.g. environmental protection and impact assessment)

material safety data sheets (MSDS)

national environment protection measures

occupational health and safety (OHS) national standards and codes of practice

site-specific requirements

Information about the site, industrial activities and emissions

Information about the site, industrial processes and emissions may include:

location of site and nearby buildings, topography and meteorological records

complaints, previous stack testing at site or odour assessments in nearby locations

industrial process inputs/outputs, process flowchart, unit operations, batch, cyclic or continuous operation, predictable variations in process conditions, production rates, and period of operation

air emission control systems, such as scrubbers, bag filters, stacks and bio filters

parameters of emission sources, such as location, geometry, release parameters and weather interaction

previous emissions data, such as:

velocity and temperature of pollutant concentration

moisture content

expected gas composition and likely interfering compounds

high vacuum, high pressure and high temperature gas streams

corrosive or very reactive components

Air pollutants

Air pollutants may include:

inorganic gases:

CO and CO2, NOx, andSOx

acid gases

H2S, HCl

ozone

chlorine, fluorine and fluorides

volatile organic liquids and compounds

particulates:

deposited matter

suspended matter (PM10, PM2.5, and PM1)

particulate fluorides

heavy metals

Stack tests

Stack tests may include, but are not limited to:

measurement of temperature, pressure, velocity and volume flowrate of gas streams

gas analysis for determination of molecular weight

determination of moisture content

determination of particulate matter

determination of concentration of specific gases in emissions (e.g. O2, CO2, SO2, NO and NO2)

Hazards

Hazards may include:

working on elevated platforms

exposure to toxic, corrosive or hot gases

electrical hazards

trip hazards from cables

noise or heat from plant equipment

objects falling from the work platform or into the duct/stack

flammability hazards

Safety procedures

Safety procedures may include:

preparation/approval of site health and safety plan for sampling/testing, and safe work permits/approvals

use of safe work method statements, site safety induction, risk cards, ‘step back’ and safety checks

use of personal protective equipment

ensuring two persons are present

monitoring of atmosphere for hazardous gases

working upwind of known contaminants

prohibition of eating, drinking and smoking

separation of heavy equipment into smaller units/cases for transport

testing and earthing of electrical services, generators, trip out devices and connectors

shielding of hot surfaces and exhausts

careful handling of glass containers

reporting procedures for safety problems

regular medical checks

Safety equipment

Safety equipment may include:

safety harness, personal protective equipment, such as boots, gloves, safety glasses and overalls

gas monitors

communication equipment (e.g. two-way radio and mobile phone)

MSDS

first aid equipment

Stack sampling and testing equipment

Stack sampling and testing equipment may include:

sampling train with in-stack or out-stack collector and components, such as:

sampling nozzles

probe tubes (e.g. glass and stainless steel)

filters, impingers and desiccators for transport of dry filters

flexible bags (e.g. Tedlar, Mylar and Teflon)

particulate matter collectors, accessories (e.g. cyclones and filter bags)

pre-prepared sample containers (e.g. Dioxin and furans), transport containers, eskies and ice

instruments to measure static and differential pressure (e.g. manometer and barometer)

sampling flow rate control devices

pumps

sampling flow meters

water removal device (e.g. condenser and silica gel)

temperature sensors in stack, duct and gas meters

gas velocity instruments (e.g. pitot tube)

heating/cooling elements to prevent condensation of probe tube or collectors

gas analysers (e.g. NOx, CO, CO2, O2 and N2) with components, such as:

sample gas manifolds

analyte specific, dual range and low concentration analysers

data recorder, data logger and/or computer for real-time analysis

reagents and standards (e.g. calibration gases, converter efficiency gases, interference checks and demineralised water)

sample lines, hoses, ropes, bags and winches

electrical extension cords

calibrated rod for measuring stack dimensions

balance, timers and digital camera

tools and spare access hole plugs

cherry picker

Sampling/measurement system performance tests

Sampling/measurement system performance checks may include:

detecting and rectifying leaks (or reducing them to acceptable levels)

analyser 2 or 3 point calibration tests

NO2 to NO conversion efficiency checks

system bias checks

system response time check

interference checks

post-run system bias and zero/span drift checks

quality control (QC) runs

OHS and environmental management requirements

OHS and environmental management requirements:

all operations must comply with enterprise OHS and environmental management requirements, which may be imposed through state/territory or federal legislation - these requirements must not be compromised at any time

all operations assume the potentially hazardous nature of samples and consumables, and require standard precautions to be applied

where relevant, users should access and apply current industry understanding of infection control issued by the National Health and Medical Research Council (NHMRC) and State and Territory Departments of Health