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SOUTH AFRICAN QUALIFICATIONS AUTHORITY 
REGISTERED UNIT STANDARD: 

Describe properties of wood related to drying 
SAQA US ID UNIT STANDARD TITLE
263719  Describe properties of wood related to drying 
ORIGINATOR
SGB Forestry 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 01 - Agriculture and Nature Conservation Forestry and Wood Technology 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 3  NQF Level 03 
REGISTRATION STATUS REGISTRATION START DATE REGISTRATION END DATE SAQA DECISION NUMBER
Reregistered  2018-07-01  2023-06-30  SAQA 06120/18 
LAST DATE FOR ENROLMENT LAST DATE FOR ACHIEVEMENT
2024-06-30   2027-06-30  

In all of the tables in this document, both the pre-2009 NQF Level and the NQF Level is shown. In the text (purpose statements, qualification rules, etc), any references to NQF Levels are to the pre-2009 levels unless specifically stated otherwise.  

This unit standard does not replace any other unit standard and is not replaced by any other unit standard. 

PURPOSE OF THE UNIT STANDARD 
This unit standard reflects the skills, values and knowledge required by people in the sub-field of Forestry and/or wood technology who must be able to describe the properties of wood related to drying.

People credited with this Unit Standard are able to:
  • Describe the microscopic structure of wood.
  • Explain how wood holds water using the correct terminology.
  • Explain why and how wood shrinks and swells ("moves").
  • Describe the influence of all the above factors on the distortion of wood. 

  • LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
    A Learner who wishes to enter a learning programme for this Unit Standard must be able to demonstrate:
  • Communication and Mathematical Literacy at NQF Level 2 or equivalent.
  • Lumber drying knowledge and skills equivalent to NQF Level 1 requirements.
  • Knowledge of workplace procedures, safety and health measures and environmental.
  • Management principles in the lumber drying area relevant to NQF Level 1 requirements. 

  • UNIT STANDARD RANGE 
  • The scope of this unit standard covers the "Range" as mentioned in the specific outcomes above.
  • The typical context of this unit standard relates to the training of a learner at NQF Level 3 in the activity of Lumber Drying.
  • The level assigned to this Unit Standard, i.e. NQF Level 3, is appropriate because:
    > For foundational competence the learner has to demonstrate a well developed range of skills and ability to make comparisons and interpret available information.
    > For practical competence the learner has to demonstrate the ability to operate in a number of contexts, some of which may be non-routine, make significant choices from a wide range of procedures and co-ordinate with others.
    > For reflexive competence he/she has to demonstrate the ability to handle significant responsibility for quantity and quality of one's own output and in this case, i.e. lumber milling, for those of others. 

  • Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Describe the microscopic structure of wood. 
    OUTCOME RANGE 
    Cells include:
  • Cell walls, cell openings; different cell types.

    Planes include:
  • 3 planes of wood i.e. tangential, radial and longitudinal, knots, reaction wood, spiral grain, juvenile wood. 

  • ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Wood structure is described in terms of cell types, cell walls and cell openings in relation to its drying behaviour during the drying process. 

    ASSESSMENT CRITERION 2 
    Wood structure is described in terms of types of planes and the influence of each plane on the drying process. 

    ASSESSMENT CRITERION 3 
    The differences among the different wood planes are explained in terms the effect of each on the wood structure in relation to moisture absorption. 

    SPECIFIC OUTCOME 2 
    Explain how wood holds water using the correct terminology. 
    OUTCOME RANGE 
    Free water, bound water, cell structure, relative humidity; equilibrium moisture content. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The differences between free water and bound water are explained in terms of the chemistry of wood. 

    ASSESSMENT CRITERION 2 
    The concept of relative humidity is described in relation to how wood hold water. 

    ASSESSMENT CRITERION 3 
    The concept of equilibrium moisture content is explained in terms of how wood holds water. 

    SPECIFIC OUTCOME 3 
    Explain why and how wood shrinks and swells ("moves"). 
    OUTCOME RANGE 
    Moisture content, relative humidity, equilibrium moisture content; cell structure -cell walls, wood density, three planes of wood. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Wood shrinkage is explained in terms of cell structure and the effect of wood plane in terms of humidity and moisture content. 

    ASSESSMENT CRITERION 2 
    Reasons for wood shrinkage are given in terms of moisture content and equilibrium moisture content. 

    ASSESSMENT CRITERION 3 
    The swelling of wood is explained in terms of cell structure, wood plane and relative humidity. 

    ASSESSMENT CRITERION 4 
    Reasons for the swelling of wood are given in terms of moisture content and equilibrium moisture content and relative humidity. 

    SPECIFIC OUTCOME 4 
    Describe the influence of all the above factors on the distortion of wood. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The concept of wood distortion is explained in terms of humidity, moisture content, cells structure and wood planes. 

    ASSESSMENT CRITERION 2 
    The effect of moisture content in wood on its shape is explained according to quality requirements. 

    ASSESSMENT CRITERION 3 
    The effect of relative humidity and cell structure of wood on its shape is explained according to quality requirements. 

    ASSESSMENT CRITERION 4 
    The influence of moisture content, relative humidity, cell structure and type of plane of wood on the distortion of wood during drying is described according to quality requirements. 


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
  • An assessor, accredited with a relevant NQF Level 4 or higher qualification, will assess the learner's competency. Only an Assessor with suitable first hand experience in process operations will assess the learner's competency.
  • Anyone assessing a learner or moderating the assessment of a learner against the qualification must be registered as an assessor with the relevant Education, Training, Quality, Assurance (ETQA) Body, or with an ETQA that has a Memorandum of Understanding with the relevant ETQA.
  • Any institution offering learning that will enable the achievement of this qualification must be accredited as a provider with the relevant Education, Training, Quality, Assurance (ETQA) Body, or with an ETQA that has a Memorandum of Understanding with the relevant ETQA.
  • Assessment and moderation of assessment will be overseen by the relevant Education, Training, Quality, Assurance (ETQA) Body, or by an ETQA that has a Memorandum of Understanding with the relevant ETQA, according to the ETQA's policies and guidelines for assessment and moderation.
  • Moderation must include both internal and external moderation of assessments, unless ETQA policies specify otherwise. Moderation should also encompass achievement of the competence described in the associated unit standards.
  • Anyone wishing to be assessed against this qualification may apply to be assessed by any assessment agency, assessor or provider institution that is accredited by the relevant ETQA. 

  • UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
    Learners can understand and explain, and apply where relevant:
  • Workplace procedures, safety and health measures and environmental management principles relevant to NQF Level 3 activities in lumber drying.
  • The properties of wood related to drying. 

  • UNIT STANDARD DEVELOPMENTAL OUTCOME 
    N/A 

    UNIT STANDARD LINKAGES 
    N/A 


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Identify and solve problems and make decisions using critical and creative thinking. 

    UNIT STANDARD CCFO WORKING 
    Work effectively with others as a member of a team, group, organisation or community. 

    UNIT STANDARD CCFO COLLECTING 
    Collect, analyse, organise and critically evaluate information. 

    UNIT STANDARD CCFO COMMUNICATING 
    Communicate effectively, using visual, mathematical and/or language skills in the modes of oral and/or written presentations. 

    UNIT STANDARD CCFO SCIENCE 
    Use science and technology effectively and critically showing responsibility towards the environment and health of others. 

    UNIT STANDARD ASSESSOR CRITERIA 
    N/A 

    REREGISTRATION HISTORY 
    As per the SAQA Board decision/s at that time, this unit standard was Reregistered in 2012; 2015. 

    UNIT STANDARD NOTES 
    N/A 

    QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Elective  66329   National Certificate: Lumber Milling  Level 3  NQF Level 03  Reregistered  2023-06-30  FPMSETA 


    PROVIDERS CURRENTLY ACCREDITED TO OFFER THIS UNIT STANDARD: 
    This information shows the current accreditations (i.e. those not past their accreditation end dates), and is the most complete record available to SAQA as of today. Some Primary or Delegated Quality Assurance Functionaries have a lag in their recording systems for provider accreditation, in turn leading to a lag in notifying SAQA of all the providers that they have accredited to offer qualifications and unit standards, as well as any extensions to accreditation end dates. The relevant Primary or Delegated Quality Assurance Functionary should be notified if a record appears to be missing from here.
     
    1. MINERAL MINING TRAINING INSTITUTE (PTY) LTD 
    2. VEB CELE & Associates (Pty) Ltd 
    3. York Timbers Pty Ltd 



    All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source.