NZQA unit standard 8916 version 8 Page 1 of 5

Transcription

1 Page 1 of 5 Title Operate secondary and tertiary crushing plant Level 4 Credits 15 Purpose People credited with this unit standard are able to: plan secondary and tertiary crushing plant operations; set up secondary and tertiary crushers; carry out pre-start procedures for secondary and tertiary crushing plant; crush material using a secondary and tertiary crushing plant; and complete shut-down procedures and maintenance checks for a secondary and tertiary crushing plant. Classification Extractive Industries > Surface Extraction Available grade Achieved Guidance Information 1 Performance of the outcomes of this unit standard must comply with the following: Health and Safety at Work Act 2015 (HSW); Health and Safety at Work (General Risk and Workplace Management) Regulations 2016; Health and Safety at Work (Mining Operations and Quarrying Operations) Regulations 2016; Health and Safety at Work (Worker Engagement, Participation, and Representation) Regulations 2016; approved codes of practice issued pursuant to the HSW Act; WorkSafe NZ s Good Practice Guidelines for the extractives industries, including Health and Safety at Opencast Mines, Alluvial Mines and Quarries Good Practice Guidelines 2015, available from 2 Any new, amended, or replacement Acts, regulations, standards, codes of practice, guidelines, or authority requirements or conditions affecting this unit standard will take precedence for assessment purposes, pending review of this unit standard. 3 Definition Company procedures mean the documented methods for performing work activities and include health and safety, operational, environmental, and quality management requirements. They may refer to legislation, regulations, guidelines, standard operating procedures, manuals, codes of practice, or policy statements. 4 This unit standard is intended for, but is not limited to, workplace assessment.

2 Page 2 of 5 Outcomes and performance criteria Outcome 1 Plan secondary and tertiary crushing plant operations. 1.1 Production requirements for the day are determined in accordance with customer requirements and company procedures. may include but is not limited to sealing chip grade, basecourse, grade and size, asphalt sand, concrete sand, concrete aggregates, specifications, quantities. 1.2 Feed material for primary crusher is determined in accordance with production requirements and output capabilities of secondary and tertiary crushers. may include but is not limited to rock source, fractured, hard, scalping before primary crusher. 1.3 Feed material for secondary crusher is determined in accordance with production requirements and output material supplied by the primary crusher. may include but is not limited to product size, scalping, screen size, primary crusher setting, feed material size and quality. Outcome 2 Set up secondary and tertiary crushers. 2.1 Secondary crusher is set up in accordance with production requirements, manufacturer s recommendations, company procedures, and size of material supplied by primary crusher. includes but is not limited to crusher type, settings opened, settings closed, operation speed. 2.2 Any screens required are set up in accordance with production requirements, company procedures, and manufacturer s recommendations. may include but is not limited to production requirements, feed material from secondary crusher, open circuit system, closed circuit system.

3 Page 3 of Tertiary crusher is set up in accordance with production requirements, company procedures, and manufacturer s recommendations. may include but is not limited to feed material from secondary crusher, open circuit system, closed circuit system, operational speed. Outcome 3 Carry out pre-start procedures for a secondary and tertiary crushing plant. 3.1 Personal protective equipment is selected, fitted, and worn in accordance with manufacturer s recommendations and company procedures. may include but is not limited to overalls, safety boots, hard hat, earmuffs, safety glasses, gloves. 3.2 Stockpiling areas below belts are cleaned in accordance with company procedures. 3.3 Secondary and tertiary crusher pre-start checks are carried out in accordance with manufacturer s recommendations and company procedures. may include but is not limited to grease shaft bearings, visual checks on wear components, electric motors. Outcome 4 Crush material using a secondary and tertiary crushing plant. 4.1 Operation of secondary and tertiary crushers is monitored in accordance with manufacturer s recommendations or instructions, production specifications, and/or company procedures. may include but is not limited to read-out systems, feed rates, electrical gauges, reset of overloads. 4.2 Quality and sizing of crushed products are monitored in accordance with company procedures and production specifications. may include but is not limited to sealing chip grade and cleanness, basecourse size and grading.

4 Page 4 of Operation of screens is monitored in accordance with manufacturer s recommendations or instructions, production specifications, and company procedures. may include but is not limited to feed quantities, worn spots, broken wires, loose screen, tension rail nuts and bolts, discharge chutes clear. 4.4 Procedures for safe operation of secondary and tertiary crushers are followed in accordance with manufacturer s instructions, company procedures, and production specifications. may include but is not limited to belt picker platform areas, guard rails, feed rates, removal of foreign and unspecified materials, emergency procedures, hazards, machinery defects, lighting, quarry safety plan. Outcome 5 Complete shut-down procedures and maintenance checks for a secondary and tertiary crushing plant. 5.1 Conveyor system is shut down in accordance with plant configuration and company procedures. may include belt picking area. 5.2 Conveyors are cleared of material in accordance with company procedures. may include belt picking area. 5.3 Daily or periodic maintenance due at the time of shutdown is carried out in accordance with plant maintenance schedule and manufacturer s instructions. Planned review date 31 December 2022

5 Page 5 of 5 Status information and last date for assessment for superseded versions Process Version Date Last Date for Assessment Registration 1 26 November December 2017 Revision 2 17 December December 2017 Revision 3 18 December December 2017 Revision 4 17 April December 2017 Review 5 27 January December 2017 Rollover and Revision 6 16 July December 2017 Review 7 18 June 2015 N/A Rollover and Revision 8 25 January 2018 N/A Consent and Moderation Requirements (CMR) reference 0114 This CMR can be accessed at Comments on this unit standard Please contact info@mito.org.nz if you wish to suggest changes to the content of this unit standard.