Confirm log grades and scale logs

Transcription

1 Page 1 of 5 Confirm log grades and scale logs Level 3 Credits 10 Purpose People credited with this unit standard are able to: manage hazards associated with confirming log grades and scaling logs; demonstrate knowledge of the reasons for log grading; identify and confirm log grades; describe log scaling procedures; describe features of log scaling; scale logs and use conversion factors to calculate log volumes. Subfield Domain Status Wood Handling and Distribution Wood Preparation Registered Status date 18 December 2006 Date version published 18 December 2006 Planned review date 31 December 2011 Entry information Accreditation Standard setting body (SSB) Recommended: Unit 8008, Demonstrate knowledge of log yard operations; and Unit 736, Demonstrate knowledge of tree growth and physical characteristics of wood; or demonstrate equivalent knowledge and skills. Evaluation of documentation and visit by NZQA and industry. Competenz Accreditation and Moderation Action Plan (AMAP) reference 0173 This AMAP can be accessed at Special notes 1 Definitions Industry best practice refers to minimum standards for forest operations as described in: Forest Industry Best Practice Guidelines (Auckland: Competenz, 2000) and available from Competenz, PO Box 9005, Newmarket, Auckland Log scaling refers to the measurement of log dimensions and calculation of log volumes.

2 Page 2 of 5 Worksite documentation refers to instructions to staff on policy and procedures (including the application of legislation to worksite situations), which are formally documented, and are available for reference at the worksite. Examples are standard operating procedures, specifications, manuals, and manufacturer's information. 2 Reference in this unit standard to the Code of Practice refers to the Approved Code of Practice for Safety and Health in Forest Operations (Wellington: Occupational Safety and Health Service, Department of Labour, 1999) available at 3 The following apply to the performance of all elements of this unit standard: a All work practices must meet recognised codes of practice and documented worksite health and safety and environmental procedures (where these exceed the code) for personal, product and worksite health and safety, and must meet the obligations required under current legislation, including the Health and Safety in Employment Act 1992, the Resource Management Act 1991, and their subsequent amendments. b All work practices must meet documented worksite operating procedures. This includes the recording (by electronic or non-electronic means) of activities, events, and decisions. c All evidence of communications gathered in relation to this unit standard must be in accordance with worksite procedures for content, recipient, timing and method. Elements and performance criteria Element 1 Manage hazards associated with confirming log grades and scaling logs. 1.1 Hazards associated with confirming log grades are identified and actions to be taken to isolate, minimise or eliminate the hazard are described in accordance with the code of practice and worksite documentation. mobile plant, dust, noise, moving logs. 1.2 Safe work practices associated with confirming log grades are identified and used in accordance with the code of practice, legislative requirements and worksite documentation. practices may include but are not limited to isolation procedures, lock-outs, working around mobile plant, wearing appropriate safety equipment.

3 Page 3 of 5 Element 2 Demonstrate knowledge of the reasons for log grading. 2.1 Reasons for purchasing to a uniform log size and quality are explained. production throughput, recovery, saleable product mix, profitability. 2.2 Relative values of current log grades are identified. economic, grade and conversion recovery. Element 3 Identify and confirm log grades. 3.1 Log grade specifications are interpreted in terms of log characteristics. log characteristics may include but are not limited to length, pruned or unpruned, small end diameter, largest single branch, sweep class and minimum internode length index, mechanical or insect damage, draw wood, sapstain, decay, butt flare, nodal swelling, wobble. 3.2 Grade marks are identified from suppliers marks, brands and delivery dockets. 3.3 Log characteristics are measured, calculated, and compared with log grade specifications in accordance with worksite purchasing requirements. 3.4 Supplied log grades and lengths are confirmed according to customer specifications. Element 4 Describe log scaling procedures. 4.1 Procedures for rule, tape, and calliper placement are described in accordance with industry best practice. 4.2 Methods for determining log volume are described. evidence of two methods is required. 4.3 Interpretation of loader and weighbridge weigh scales are described in accordance with industry best practice.

4 Page 4 of 5 Element 5 Describe features of log scaling. 5.1 Calibration of log scaling equipment is described in accordance with industry best practice. tapes, rules, callipers. 5.2 Checks for accuracy of log scaling data using scaling equipment and recording methods are described in accordance with worksite documentation and industry best practice. 5.3 Description explains how sample loads for weight scale factors are planned and identified in accordance with worksite documentation and industry best practice. 5.4 The requirement for weight-to-volume conversion factors is explained in accordance with industry best practice. 5.5 Derivation of weight-to-volume conversion factors is explained in accordance with industry best practice. Element 6 Scale logs and use conversion factors to calculate log volumes. 6.1 Log dimensions are measured, and the volume is calculated from the dimensions. volumes of five logs are calculated from data obtained using computer and/or calculator. 6.2 Volume is calculated from weight using a weights scale factor. three weights of log loads. Please note Providers must be accredited by the Qualifications Authority, or an inter-institutional body with delegated authority for quality assurance, before they can report credits from assessment against unit standards or deliver courses of study leading to that assessment. Industry Training Organisations must be accredited by the Qualifications Authority before they can register credits from assessment against unit standards. Accredited providers and Industry Training Organisations assessing against unit standards must engage with the moderation system that applies to those standards.

5 Page 5 of 5 Accreditation requirements and an outline of the moderation system that applies to this standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The AMAP 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. Comments on this unit standard Please contact the Competenz at info@competenz.org.nz if you wish to suggest changes to the content of this unit standard.