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The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included. |
Cultured or held stock may include: | adults, broodstock (ready to breed), seedstock or stockers, eggs and sperm, fertilised eggs, larvae, post-larvae, seed, spat, hatchlings, yearlings, juveniles, fry, fingerlings, yearlings, smolt, sporophytes, seedlings and tissue culturesfinfish, crustaceans, molluscs, aquatic reptiles, amphibians, polychaete and oligochaete worms, plankton, micro-algae, seaweed, aquatic plants, live rock, sponges and other aquatic invertebratesfor human consumption (seafood), stockers for other farms, stockers for conservation or recreational fishing, display or companion animals (ornamentals), and other products, including pearls, skins, shells, eggs, chemicals and pigmentswild caught, hatchery or nursery reared. |
Relevant government regulations, licensing and other compliance requirements may include: | biodiversity and genetically modified organismsbiosecurity, translocation and quarantine business or workplace operations, policies and practicesenvironmental hazard identification, risk assessment and controlfood safety/Hazard Analysis Critical Control Points (HACCP), hygiene and temperature control along chain of custody, and Australian Quarantine Inspection Service (AQIS) Export Control (Fish) ordershealth and welfare of aquatic animalsOHS hazard identification, risk assessment and control. |
OHS guidelines may include: | appropriate workplace provision of first aid kits and fire extinguishersclean, uncluttered, hygienic workplacecodes of practice, regulations and/or guidance notes which may apply in a jurisdiction or industry sectorenterprise-specific OHS procedures, policies or standardshazard and risk assessment of workplace and maintenance activities and control measuresinduction or training of staff, contractors and visitors in relevant OHS procedures and/or requirements to allow them to carry out their duties in a safe manner OHS training registersafe lifting, carrying and handling techniques, including manual handling, and the handling and storage of hazardous substancessafe systems and procedures for outdoor work, including protection from solar radiation, fall protection, confined space entry and the protection of people in the workplacesystems and procedures for the safe maintenance of property, machinery and equipment, including hydraulics and exposed moving partsthe appropriate use, maintenance and storage of PPE. |
Food safety and hygiene regulations and procedures may include: | Australian Shellfish Sanitation programequipment design, use, cleaning and maintenance exporting requirements, including AQIS Export Control (Fish) ordersHACCP, food safety program, and other risk minimisation and quality assurance systemslocation, construction and servicing of seafood premises people, product and place hygiene and sanitation requirementsPrimary Products Standard and the Australian Seafood Standard (voluntary) product labelling, tracing and recallreceipt, storage and transportation of food, including seafood and aquatic productsrequirements set out in Australian and New Zealand Food Authority (ANZFA) Food Standards Code and state and territory food regulationstemperature and contamination control along chain of custody. |
ESD principles may include: | applying animal welfare ethics and procedurescontrol of effluents, chemical residues, contaminants, wastes and pollution control of weeds, pests, predators and diseases, and stock health maintenance improving energy efficiencyincreasing use of renewable, recyclable and recoverable resourcesminimising noise, dust, light or odour emissionspreventing live cultured or held organisms from escaping into environmentreducing emissions of greenhouse gasesreducing energy usereducing use of non-renewable resourcesundertaking environmental hazard identification, risk assessment and control undertaking facility quarantine, biosecurity and translocation of livestock and genetic materialusing and recycling water, and maintaining water quality. |
PPE may include: | hard hat or protective head covering hearing protection (e.g. ear plugs and ear muffs)non-slip and waterproof boots (gumboots) or other safety footwearprotective eyewear, glasses and face maskprotective hair, beard and boot coversuniforms, overalls or protective clothing (e.g. mesh and waterproof aprons). |
High technology water treatment components may include: | aeration or oxygenation equipment, such as aerators, aspirators, airlifts and fanscomponents that regulate environmental and climate control factors, such as temperature, photoperiod and light intensitydegassing systems for removing carbon dioxide and ozone, including the use of specialised air filtersfacilities and processes designed for health management, such as quarantine area, sterilising using ultraviolet (UV) light and ozone, and pasteurising using heat or steammechanical/physical/solid, chemical and biological filtration devices (or a combination of two or more different types):chemical filter:examples include activated carbon, zeolites and other ion-exchange mediumsis where a variety of chemical substances are used to treat water passing through themozone and chemical, such as pH and alkalinity, adjustments are also made, sometimes in a separate area to the chemical filterbiological filter:is part of an RAS where dissolved metabolic by-products are converted to less toxic forms by microbial action from a range of different bacteria, fungi and other microorganismsthe most important function is the oxidation of ammonia to nitrite, and nitrite to nitrate (often called nitrification)mechanical/physical/solid filter:includes swirl separators, hydrocones, protein skimmers or foam fractionators, drum filters, belt filters, bead and other suspended media filters and screen filtersis important to ensure organic loads going into biofilters are as low as possible to prevent the more competitive heterotrophic bacteria from taking over and reducing nitrification capacityis part of an RAS that removes solid organic matter and other wastesreduces the biological oxygen demand (BOD) for the systemsome degassing or carbon dioxide stripping can also take placeventilation systems, fans, blowers and humidifiers/ dehumidifierswater treatment devices, such as those that maintain pH (acid/alkaline) balance. |
A recirculating aquaculture system (RAS) is: | a system in which at least some of the water is recycled one or more times back into the system after some form of treatmentalso called a closed system (which is the opposite to a flow through or open system where there is little residence time for the culture water)where generally some form of water treatment with equipment or structures, particularly aeration or oxygenation and processing of nitrogenous wastes, is undertakenwhere a water exchange (replacement) rate of 5-10% per day is used to assist in maintaining water quality (particularly nitrate control). |
Other aquaculture equipment and infrastructure may include: | alarm and monitoring systems, including loss of pressure, burglar, loss of electricity and critical parameterscounters and microscopes, pipettes and syringes, measuring cylinders and dissecting kitseffluent and waste disposal, such as sewage, septic and compost pitsheating or cooling systems, such as heat exchange equipment, geothermal, gas, hydro, electric and solar (can also include insulated buildings and greenhouses)husbandry equipment, such as graders, feeders, fish pumps, nets, fish bins and transporterslighting, such as skylights, fluorescent, incandescent, metal halide and mercury vapourpipes and reticulation systems, including siphons, both for supply and disposalpumps:airliftaxialcentrifugalhydraulic ram or helical drivemagnetic drivemechanicalperistaltic or dosingpistonpressurepowered by:batterycablediesel or petrolelectricity (single or 3-phase)hydraulicspneumatic or air drivensolarwindregenerative turbinescrew pumpself-priming or non-primingsludge or surgesubmersibleventuriwashing, disinfecting and sterilising equipment, such as autoclaveswater quality test equipment, including pH, dissolved oxygen, temperature and salinity. |
Work plan or schedule may include information on: | contingencies for responding to partial or full system shutdown, stock stress or mortalitiescontingency plan to address staffing and equipment supply problemscosts and budget detailsdate and time tasks are to be undertakendesignated jobs tasks, directions or designsenvironmental impact control measuresexpected time required to complete activitieshazard identification, risk assessment and risk control measureslocal, state, territory and federal government regulationslocationmaintenance schedule for particular items of equipmentmanufacturer guidelines or instructionsmaterials, supplies, tools, equipment or other resources requiredmonitoring and reporting requirements and procedures, including logs or checklistsnon-conformance or incident/fault reporting proceduresOHS procedures, including PPE requirementsorder of activitiesother members of work team and their roles, responsibilities and skillsperson in chargepre- and post-operational and safety checkspreferred supplier list and resources required by external workers and tradespeopleroutine maintenance proceduresspecific structures or componentsstandard for completed activities. |
Worksite may include: | depotshatchery, nursery, grow out and holding facilitieslaboratoriespost-harvest or processing facilitiesstaff amenitiesstock and quarantine treatment facilitiesstorage areasworkshops. |
Routine pre-operational checks and calibrations may include: | appropriate use of PPEchecking and confirming equipment calibration settings and operating methods for turbo-charged engineschecking for design problems or equipment modificationschecking for wear, corrosion and incorrect usechecking fuel, oils and lubricants, electrolyte levels, wheels, tyre pressure, fan belts, leads, lines, connections, air filters, brakes, clutch, gearbox, steering, lighting and transmissionidentifying and segregating unsafe or faulty equipment for repair or replacementinspecting safety guards, power take-off (PTO) stubs and shafts, and hitch and towing pointsobserving and monitoring noise levels for correct operationpreparing independently powered tools, which may include cleaning, priming, tightening, and basic repairs and adjustmentspre-start and safety checks, including the service and maintenance of cooling system. |
Abnormal or non-standard conditions may include: | critical flow rates down due to obstructions or damage to lines or pipescritical water quality parameters outside safe operating conditionsmoving parts making unusual noises or movement being hamperedplant or equipment failure resulting in leaks or non-operation of systempower not on, water not flowing or aeration offsmoke, fumes or other emissionssparks or obvious signs of electrical shortsstock showing signs of stress, such as:aggression or cannibalismcolour changesgasping at surfacelesions or other signs of damage to skinno reproduction or courtshipnot feedingpiping, darting, flashing or whirling movementschooling activityswimming or moving erraticallywater levels too high or low in culture system. |
Culture or holding structures or systems may include: | display tanks, aquaria and aquascapes (ornamental industry)grow out facilities, hatcheries and nurseriesharvested stock holding structures, tanks, bins and cageslive holding systemspest, predator and disease control structurespurging or depurating systemstanks, raceways and RASwater supply and disposal systems for closed and semi-closed systems. |
Environmental parameters may include: | activity of pests, competitors and predatorslight levelsturbiditywater flowwater level or depth. |
Water quality parameters may include: | alkalinitychlorine or chloraminesdissolved carbon dioxidedissolved oxygengeneral water hardnesslevel of nitrogenous wastes, such as ammonia, nitrite and nitrate, and contaminants and pollutantspH (acid/alkaline balance)phosphatessalinity or conductivitytemperaturetotal dissolved solids. |
Adjustments to operating components may include: | alkalinity additionback flushing or changing of filtersbiofilter start-up and maintenancechanges in light and dark regimesdegassingdigital or analog control systemsfoam fractionator or protein skimmerheating or coolingmanaging shock-loadingmanual or computer controlledUV or ozone systemswater or air flow changes. |
Other risks may include those associated with: | environmentfood safety and product qualityinfrastructure, plant and equipmentstock. |
Contingency plans to address: | adverse weather conditions and acts of nature, such as flood or firebreakdown of componentsbypass of componentscompromised water sourcedisease outbreaksemergency proceduresnon-standard water quality parametersrisks to culture stock during emergency shutdowns or breakdownsrisks to environmentrisks to infrastructure and equipmentrisks to product quality and food safety. |
Basic tools and equipment may include: | cleaning rags, solvents and chlorineconcreting tools, including wheelbarrow, cement mixer and trowelelectric or battery operated tools, including heat gun, drill, angle grinder, drill press, circular saw and drop sawglue, primer, sandpaper and wire brushhand tools, including screwdrivers, spanners or socket set, stilson, hacksaws, clamps, chisels and hammersmeasuring tape, string-line, level and squareoil or grease gunplugs or repair patchessafety equipment (e.g. goggles, mask or breathing equipment)silicon or similar sealantspade, shovel, pick and crowbarthread or plumber's tape and Teflon pastetools for working with fibreglass. |
Spare parts and repair materials may include: | earth, stones and fillingsfibreglass webbing, gels, flow coat and hardenersfittings, such as joints, valves, mark boards, barrel unions and reducersglass panes, off-cuts and sealantsnylon strips, netting and wire ropepipe lengthspipe saddles or clampsprotection stripsPVC, polyethylene and other plasticssand, gravel, cement, concrete, bricks and paversstainless steel and treated metalswood. |
Worn or damaged parts or areas may include: | chemical and biological filtersdepth gaugeselectronic monitorsfittings, such as joints, valves and boardsflow control devices, such as taps, valves, float valves, monks, dykes, weirs and gatesmechanical components in treatment structures, such as sieves, filters and aeratorspipespumps and mechanical componentssides or bottoms of earthen, concrete, fibreglass or plastic-lined supply and disposal systems or structureswood or metal structures. |
Repair techniques may include: | applying plugs or patchesfibreglassinglaying and joining pipes (with or without glue or other fixatives)metal weldingmixing, pouring and curing concreteplastic weldingsealing or gluing glasswoodworking, screwing, nailing and gluing. |
Records or reports may include: | associated equipment and infrastructurechecklists, data sheets, inventory and stocktakesculture or holding stock speciesdates, times and progress against timelines of activities or eventsdetails related to culture or holding structures or systemselectronic or hard copyGantt chartgraphs, charts and tableskey performance indicators (KPIs)operation and maintenance details and other outcomes achievedpersonnel and subcontractor performance dataproblems experienced and strategies to overcome them. |