28696 Demonstrate Knowledge of Planning for Blending and Applying Bituminous Binders With

Explanatory notes

1 Competence in this unit standard requires knowledge of the current editions of the following references:

RNZ 9803, Quality Assurance for Bituminous Binders: A Code of Practice developed by Roading New Zealand, RNZ 9803:2013, Roading New Zealand, available at http://www.nzcontractors.co.nz;

New Zealand Transport Agency specifications at http://www.nzta.govt.nz:

NZTA M1: Specification for Roading Bitumens;

NZTA M13: Specification for Adhesion Agents;

NZTA M13 Notes: Notes to Specification for Adhesion Agents;

NZTA Q1: Specification for Quality Assurance for Chipsealing;

Bitumen Emulsion Users Guide, Roading New Zealand, at http://www.nzcontractors.co.nz;

Chipsealing in New Zealand, New Zealand Transport Agency, available at http://www.nzta.govt.nz/resources/chipsealing-new-zealand-manual/;

Guide to the Manufacture, Storage and Handling of Polymer Modified Binders (AAPA Code of Practice), June 2004, Australian Asphalt Pavement Association, available at http://www.aapa.asn.au

2 Definition

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.

Outcomes and evidence requirements

Outcome 1

Demonstrate knowledge of planning for blending binders in a bitumen distributor.

Evidence requirements

1.1 Planning for blending in a bitumen distributor is explained in terms of determining requirements for the blend through communication with relevant parties.

Range requirements – recipe, technical data, input qualities, quantities required for heating and distribution, delivery times, sealing chip source.

1.2 Planning for blending in a bitumen distributor is explained in terms of checking stocks and ordering supplies of materials to ensure that sufficient stock of materials is available on time and on site for blending the required quantity of binder.

Range planning – weekly, daily;

materials – bitumen grades, cutter, flux, additive, adhesion agent.

1.3 Planning for blending bituminous binders is explained in terms of selecting a safe site for operations.

1.4 Planning for blending is explained in terms of determining suitability of using tank contents to manufacture a blend for which the formula uses a different grade of bitumen and obtaining an amended blend formula.

Range calculating what is in tank and what needs to be added to make the new brew.

1.5 Sampling and testing requirements for bituminous binders are described in accordance with NZTA specifications, contract requirements, and company procedures.

Range sampling – bitumen grades, cutter, flux, additive, adhesion agent;

process control tests – evidence testing, calibrations, viscosity, temperature, volumes, weights, tolerances.

Outcome 2

Demonstrate knowledge of planning for applying bituminous binders.

Evidence requirements

2.1 Planning for applying bituminous binders is explained in terms of application rates, binder temperatures, and volumes of binder required for seal designs.

Range three seal designs.

2.2 Bituminous binder application is explained in terms of planning runs and minimising downtime.

Range run patterns, applications rates for each run, coordination with chip trucks;

planning for at least three sites.

2.3 Planning for bituminous binder application is explained in terms of inventory controls to maintain quantities for a sealing site.

Range quantities for – heating, distribution.

2.4 Planning for bituminous binder application is explained in terms of rescheduling.

Range rescheduling for impact of – weather, material delays, plant breakdown, product failure.

2.5 Planning for bituminous binder application is described in terms of scheduling samples and tests to meet contract quality requirements.

Range sampling and testing plans for two contracts.

Status information and last date for assessment for superseded versions

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 (CMRs). 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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