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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 in the Performance Criteria is detailed below. |
Confined spaces may include | Any compartment or area with limited opening for access and no escape route, and with limited natural ventilation or an atmosphere containing more than 23.5% or less than 19.5% oxygen, and the capability of accumulating a toxic, flammable or explosive atmosphere, or of being flooded Examples of confined spaces may include:fuel tanks (diesoline, gasoline, kerosene, AVCAT) or any other liquid or gaseous fuelwater tanks (feed, fresh, ballast), void spaces, cofferdams, double bottoms/wing compartments, sewagetreatment tanks (CHT system)oil tanks (sludge oil, lubricating, hydraulic), cable lockers (anchor cable stowage)open-topped spaces such as pits or degreasers, pipes, sewers, shafts, ducts and similar structuresboiler drums, steam turbine casing, main condensers, gas turbine rotor casing, piston engine enclosedcrankcase, main circulating water inlet and discharge pipes, pressure vessels |
Duration of and limitations on tasks may include | Climbing equipment or laddersLifelinesLimitations associated with either the task or the environment that require limited time to reduce the exposure risk, or are imposed because of equipment limitations (e.g. breathing apparatus limitations)obstructions that limit access to or from areas within the confined spaceRequirements for special breathing apparatusRestrictions on activities that may be undertaken without specific action such as exhausting volatile gases before weldingWorking at heightsSlippery surfacesSpecial clothingTime limit on exposure necessitating rotation of personnel through confined space in order to complete the task that initiated the entry requirement |
Tasks may include | Any activity that is to be performed inside the confined space |
Organisational policy and procedures may include | Any established contingency plan or any plan formed specifically to counter ill effects of any likely occurrenceAustralian or international standardsConfined space entry permit/permits to workEquipment manufacturers' specificationsExposure standardsJob Safety Analysis (JSA)Legislation, including state/territory/commonwealth OH&S acts, regulations, codes of practice and guidance material relating to hazards present in the workplace and industry, and associated with entry to confined space including legislation specific to confined space workLockout and isolation proceduresMaterial Safety Data Sheets (MSDS)Organisational policies and proceduresRisk assessmentsStanding Operating Procedures (SOPs)Task analysis |
Equipment and resources may include | Detection/monitoring equipment such as used to detect gases, radiationEquipment which is intrinsically safePersonal protective equipment (PPE) such as safety helmets, eye protection, hearing protection, skin protection, belts, special bootsRopes, lifelines, ladders, karabinersSafety equipment such as breathing apparatus |
Preparation of equipment and resources may include | Confined space work permit completed and issuedForced ventilation set-upRecharging air bottles |
Occupational health and safety requirements pertain to all relevant OH&S legislation and include | General duty of care under OH&S legislation and common lawProvisions relating to health and safety representatives and/or OH&S committeesProvisions relating to OH&S issue resolutionState/territory/commonwealth OH&S Acts, regulations, codes of practice and guidance material relating to hazards present in the workplace and the industry |
Preparing a confined space for entry may include | CoolingEmptyingHeatingInstalling appropriate signage and protective barriersIsolationLockoutVentilating |
Pre-entry tests or checks may include | Testing confined space atmosphereTesting equipment for safe operation (confidence testing) prescribed by manufacturerTesting equipment for serviceability |
Monitoring environmental conditions may include | Maintaining testing regime while in confined space, be it continuous or periodic, in accordance with entry plan and work permitMonitoring in response to risk assessmentMonitoring in response to work being undertaken in the space |
Maintaining communications may include | Continuous or periodic verbal and/or visual and/or electronic communication in accordance with work permit/entry planEmergency response procedures |
Cleaning and refurbishing equipment may include | Decontamination proceduresDisposal of PPEDrying harnesses, ropes and safety linesInspecting, servicing and cleaning equipment ready for re-use or storageRecharging of batteries, air bottles, gas bottles |
Documentation and reports may include | Equipment usage reports/logsReports to OH&S officerReports to tasking officerWork permit completion after exitWritten reports required by organisation |
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