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Elements and Performance Criteria
Required Skills
Evidence Required
Range Statement
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10) This relates to the unit of competency as a whole providing the range of contexts and conditions to which the Performance Criteria apply. It allows for different work environments and situations that will affect performance.Plant and equipment may include boiler and auxiliary plant; fuel and fuel delivery system; fuel management system; flame detection equipment; steam temperature control plant; boiler heating surfaces; draft system; ash and dust removal system; combustion waste extraction system; electric motors (a.c. and d.c., high and low voltage); station water distribution systems; hydraulic power oil system; compressed air systems; computers with equipment control functions; and supervisory, alarm, protection and control equipment; steam water cycle.Safety standards may include relevant sections of Occupational Health and Safety legislation, enterprise safety rules, electricity workers act and national standards for plantInformation and documentation sources may include verbal or written communications; enterprise isolation documentation; site operating instructions; plant limit book; equipment and alarm manuals; crippled plant book; daily log book; dedicated computer equipment; and local and general documented enterprise instructions.Technical and operational indicators may include stimuli (audio, smell, touch, visual), remote or local indicators and recorders, computers and alarms (visible and or audible).Communications may be by means of telephone, two way radio, pager, facsimile, computer (electronic mail) and operating log (written or verbal).Tests may include loss of major auxiliary controls response checks, stand-by plant “cut-in” tests, dampers/valves operating checks and performance tests.Appropriate personnel to consult, give or receive direction may include supervisor/team leader or equivalent; other coordinators of energy production or equivalent; technical and engineering officers or equivalent; maintenance staff; other operating staff and contractor staff.Operating environment may be remote from plant and equipment being operated; (operation is assisted by remote indicators of plant status and other parameters monitored); in wet/noisy/dusty/hot areas or during continuous operation.Plant operations (systems requirements) may include normal operating/ generating mode.Faults and abnormal operating conditions may include loss of a major auxiliary (e.g. boiler combustion air fan); loss of electrical supply to switchboard(s), motors; boiler water chemical operating limits exceeded; automatic control loop(s) malfunctions; boiler heating surfaces dust removal system malfunctions (high/low pressure/temperature, control equipment faults, jammed sootblowers); high temperatures on/in, boiler heating surfaces/tubes/headers, boiler exhaust (back end), steam to turbine, ex superheater or reheater, motor, fan, pump bearings and lubricating oil, motor windings; boiler tube leaks; air heater cold end temperatures low; air heater/combustion air ductwork fires; fuel preparation and delivery systems fires; fuel system malfunction; excessive drum water level split; excessively high heating/cooling rates; high/low furnace dp; high dp’s on oil/air filters and strainers; failed field devices (pressure/level switches/transmitters, thermocouples); failed/malfunctioning actuators/dampers/ valves; boiler feedwater pumps malfunctions (high bearing vibration, high suction strainer dp, low NPSH, high temperature differentials, pump trip, lubricating oil/electric motor cooler tube leak.Generic terms are used throughout this Training Package for vocational standard shall be regarded as part of the Range Statement in which competency is demonstrated. The definition of these and other terms are given in Section 2.1 Preliminary Information and Glossaries. |