Page 1 of 7 Title Demonstrate knowledge of bitumen gangbar sprayers and operations Level 4 Credits 10 Purpose People credited with this unit standard are able to demonstrate knowledge of: features of bitumen gangbar sprayers; health and safety hazards and adverse effects on the environment associated with bitumen gangbar sprayers and describe requirements for their control; E/2 Specification and quality assurance for gangbar sprayer operations; preparations for, and operation of, sprayer transfer, heating, circulating, and blending equipment on a gangbar sprayer; gangbar sprayer equipment inspection and maintenance; and bitumen gangbar sprayer support plant. Classification Pavement Surfacing > Chipseal Surfacing Available grade Achieved Entry information Critical health and safety prerequisites Unit 20450, Describe safe heating, blending, modification, and transfer of bulk bituminous liquids, or demonstrate equivalent knowledge and skills. Explanatory notes 1 The following legislation and requirements apply to this unit standard, and must be complied with: Hazardous Substances and New Organisms Act 1996; Land Transport Rule: Dangerous Goods 2005 (Rule 45001/1) amendment 2010, 45001/2; BCA E/2:97 Performance of Bitumen Distributors (E/2 Specification), Roading New Zealand, available on request at http://www.roadingnz.org.nz; The Safe Handling of Bituminous Materials Used in Roading Code of Practice RNZ 9904:2006, available for purchase at http://www.roadingnz.org.nz/pubs.html; The Bitumen Safety Handbook; Roading New Zealand, available for purchase at http://www.roadingnz.org.nz/pubs.html; Chipsealing in New Zealand, New Zealand Transport Agency, available at http://www.nzta.govt.nz/resources/chipsealing-new-zealand-manual/; Gangbar sprayer Any legislation or other requirements superseding any of the above will apply, pending the review of this unit standard.
Page 2 of 7 2 Assessment against this unit standard must be based on evidence from a workplace context. 3 Definitions Company procedures refers to all documented policies, procedures and methodologies of the candidate s employer at the time of training including but not limited to those relating to health, safety, environment, quality, and operations. Gangbar sprayer means tank wagon specifically built for automatically controlled spraying of bituminous materials on pavement surfaces. The equipment on a gangbar sprayer includes a handbar. Outcomes and evidence requirements Outcome 1 Demonstrate knowledge of features of bitumen gangbar sprayers. 1.1 Safety equipment is located and identified on a gangbar sprayer and its operation is described in accordance with the gangbar sprayer manufacturer s manual, and Code of Practice RNZ 9904:2006. 1.2 Gangbar sprayer tank components are located and identified, and their purpose and operation are described in accordance with the gangbar sprayer components include but are not limited to access hatch, baffle, internal pipework, vents, heaters, valves, dipstick, thermometer pockets. 1.3 Bitumen heating, pumping, blending, and flushing systems and their controls are located and identified, and their purpose and operation are described in accordance with The Bitumen Safety Handbook and the gangbar sprayer 1.4 Bitumen spraying equipment and its controls are located and identified, and their purpose and operation are described in accordance with The Bitumen Safety Handbook and the gangbar sprayer equipment includes but is not limited to gangbar, handbar; controls include but are not limited to application rate, number of nozzles, gangbar height, gangbar width, pump speed, road speed, air pressure, valves. 1.5 Sensors and process control equipment are located and identified on a sprayer and their functions are described in accordance with the gangbar sprayer
Page 3 of 7 1.6 Bitumen gangbar sprayers are described in terms of operational limitations. includes but is not limited to tank volume, spraying width, travel speed relative to nozzle output, truck length and width, rear axle configuration, accuracy of binder application rate control, length of handbar hose. Outcome 2 Demonstrate knowledge of health and safety hazards and adverse effects on the environment associated with bitumen gangbar sprayers and describe requirements for their control. operations include transferring, heating, blending, spraying. 2.1 Health hazards and the procedures and equipment to control them are described in accordance with Code of Practice RNZ 9904:2006 and company procedures. 2.2 Safety hazards and the procedures and equipment to control them are described in accordance with Code of Practice RNZ 9904:2006 and company procedures. includes but is not limited to access into tanks. 2.3 Adverse effects on the environment and the procedures and equipment to control them are described in in accordance with Code of Practice RNZ 9904:2006 and company procedures. 2.4 Monitoring of health, safety, and adverse effects on the environment is described in terms of company procedures. 2.5 Causes and prevention of water contamination of hot bitumen are described in accordance with Code of Practice RNZ 9904:2006 and company procedures. includes but is not limited to process of adding additives. 2.6 Procedures for determining whether tanks and equipment have been contaminated with water and for dealing with water contamination of hot bitumen are described in accordance with Code of Practice RNZ 9904:2006 and company procedures. 2.7 Criteria for the selection of suitable sites for transferring, heating, and blending bitumen in the field are described in accordance with company procedures.
Page 4 of 7 2.8 Procedures for dealing with emergencies during transfer, circulation, heating, or spraying of bitumen are described in terms of personal safety, public safety, environmental safety, fire fighting, control of spillage, security, and communications, and in accordance with Code of Practice RNZ 9904:2006 and company procedures. emergencies include but are not limited to explosion, fire, bitumen spill, tank rupture, electrical fault, mechanical malfunction. Outcome 3 Demonstrate knowledge of E/2 Specification and quality assurance for gangbar sprayer operations. excludes technical details of testing. 3.1 Safety and performance requirements for annual and triennial certification of bitumen gangbar sprayers are outlined in accordance with E/2 Specification. performance includes but is not limited to transverse distribution, longitudinal distribution, application rate, instrument calibration, dipstick calibration, road speed test. 3.2 On-going compliance with performance requirements of E/2 Specification is explained in terms of critical maintenance required between certifications. 3.3 Quality assurance requirements for the operation of bitumen gangbar sprayers are described in accordance with company procedures. Outcome 4 Demonstrate knowledge of preparations for, and operation of, sprayer transfer, heating, circulating, and blending equipment on a gangbar sprayer. 4.1 Preparations for operating transfer equipment are described in accordance with company procedures, Code of Practice RNZ 9904:2006, and the gangbar sprayer transfer from storage tank, road tank wagon; transfer to storage tank or road tank wagon. 4.2 Operation of transfer equipment is described in accordance with The Bitumen Safety Handbook and the gangbar sprayer transfer of hot bitumen, cutback bitumen, emulsified bitumen; transfer from storage tank, road tank wagon; transfer to storage tank or road tank wagon.
Page 5 of 7 4.3 Preparations for, and operation of heating and circulating equipment are described in accordance with The Bitumen Safety Handbook and the gangbar sprayer 4.4 Parameters for heating bulk bituminous liquids are detailed in accordance with spray temperature charts in Code of Practice RNZ 9904:2006, and the effects on binder of incorrect operation of the heating equipment are explained. parameters include but are not limited to spraying temperatures, limitations on heating rates, maximum temperatures; effects too rapid heating, slow overheating, rapid overheating; liquids straight bitumen 80/100, straight bitumen 180/200, 5 parts per 100 kerosene, 10 parts per 100 kerosene, 20 parts per 100 kerosene, polymer-modified bitumen, standard cationic emulsion, high binder content polymer-modified emulsion. 4.5 Preparations for, and operation of, blending equipment are explained in accordance with The Bitumen Safety Handbook company procedures, and the gangbar sprayer includes but is not limited to restrictions, precautions, blending of additives on site. Outcome 5 Demonstrate knowledge of gangbar sprayer equipment inspection and maintenance. 5.1 Maintenance inspection of gangbar sprayer equipment is described in accordance with The Bitumen Safety Handbook and the gangbar sprayer inspection includes but is not limited to first aid equipment, tank, valves, bitumen pump, pipework, hoses, gangbar, spray nozzles, bitumen filter, heating systems, bitumen pump, sensors, controls, hydraulic systems. 5.2 Requirements for reporting of specialist maintenance requests are described in accordance with company procedures. 5.3 Processes for clearing blockages in gangbar sprayer valves and pipework are described in accordance with Code of Practice RNZ 9904:2006 and company procedures. 5.4 Processes for emptying, flushing, and decontaminating gangbar sprayer equipment, and disposal of waste materials are described in accordance with company procedures, legislation, The Bitumen Safety Handbook, and the gangbar sprayer equipment tank, hoses, pipes, bar, handbar.
Page 6 of 7 Outcome 6 Demonstrate knowledge of bitumen gangbar sprayer support plant. support plan bitumen storage, heating, and blending facility, bitumen tank wagon. 6.1 Support plant is described in terms of layout. 6.2 Support plant is described in terms of operation. Replacement information This unit standard and unit standard 20451 replaced unit standard 1497. Planned review date 31 December 2016 Status information and last date for assessment for superseded versions Process Version Date Last Date for Assessment Registration 1 27 October 2005 31 December 2013 Revision 2 25 May 2007 31 December 2013 Review 3 15 March 2012 N/A Consent and Moderation Requirements (CMR) reference 0101 This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do. Please note Providers must be granted consent to assess against standards (accredited) by NZQA, before they can report credits from assessment against unit standards or deliver courses of study leading to that assessment. Industry Training Organisations must be granted consent to assess against standards by NZQA before they can register credits from assessment against unit standards. Providers and Industry Training Organisations, which have been granted consent and which are assessing against unit standards must engage with the moderation system that applies to those standards. Requirements for consent to assess and an outline of the moderation system that applies to this standard are outlined in the Consent and Moderation Requirements (CMR). The CMR also includes useful information about special requirements for organisations wishing to develop education and training programmes, such as minimum qualifications for tutors and assessors, and special resource requirements.
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