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SOUTH AFRICAN QUALIFICATIONS AUTHORITY 
REGISTERED UNIT STANDARD: 

Demonstrate understanding of vibration control 
SAQA US ID UNIT STANDARD TITLE
252379  Demonstrate understanding of vibration control 
ORIGINATOR
SGB Environmental Sc/Mgt & Waste Mgt 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 10 - Physical, Mathematical, Computer and Life Sciences Environmental Sciences 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 6  Level TBA: Pre-2009 was L6 
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 will be useful for people working in local authorities and charged with noise control, as appointed Noise Control Officers. They facilitate the generation of policy, develop procedures, apply the by-laws, ensure that issues between complainants and offenders are resolved, and initiate further action where this becomes necessary, including notices and legal proceedings.

More specifically this standard recognizes skill and knowledge to include vibration as a noise generator, and vibration control in planning provision.

People credited with this unit standard are able to:
  • Demonstrate understanding of vibration and noise.
  • Assess vibration and interpret results.
  • Recommend measures to limit vibration-related noise. 

  • LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
    The credit calculation is based on the assumption that learners are already competent in terms of the following outcomes or areas of learning when starting to learn towards this unit standard:
  • Competence equivalent to that described in the National Certificate: Environmental Noise, NQF Level 4. 

  • UNIT STANDARD RANGE 
    Specific range statements are provided in the body of the unit standard where they apply to particular Specific Outcomes or Assessment Criteria. 

    Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Demonstrate understanding of vibration and noise. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Sources of vibration in industrial settings are identified and discussed in terms of the propagation and transmission of noise to other industries and buildings. 

    ASSESSMENT CRITERION 2 
    The relationship between noise and vibration is discussed with reference to mechanical energy, physical impact and transmission of sound by vibration of molecules in the medium. 

    ASSESSMENT CRITERION 3 
    Different types of vibration in industrial settings are identified and discussed in terms of the impact on individuals operating machinery, those in close proximity, and those who experience vibration as noise. 
    ASSESSMENT CRITERION RANGE 
    Types of vibration include:
  • Direct vibration (jack hammer); machinery (unaligned bearings); structure born vibration; environmental (source affects others).
     

  • ASSESSMENT CRITERION 4 
    Sources of vibration are investigated for cause, and possibilities for reducing and/or dampening the vibration. The investigation confirms causes to be either design faults or oversights, or maintenance and repair issues. 
    ASSESSMENT CRITERION RANGE 
    Design faults include:
  • Space, location, base/mountings, building acoustics, foundation depth.
     

  • ASSESSMENT CRITERION 5 
    The impact of vibration on health and structures is discussed with reference to physical and psychological effects. 
    ASSESSMENT CRITERION RANGE 
    Health effects include:
  • Fatigue (settling of red blood cells, lower oxygen).

    Structural effects include:
  • Structural damage; translation of vibration into noise.
     

  • ASSESSMENT CRITERION 6 
    Different methods for measuring and assessing vibration are identified and described with reference to required instruments, methods, and interpretation. 

    SPECIFIC OUTCOME 2 
    Assess vibration and interpret results. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The accelerometer is described and explained in terms of its component parts, and their function and purpose, in accordance with manufacturer's specifications. 

    ASSESSMENT CRITERION 2 
    SANS guidelines for the operation of the instrument are identified and explained with reference to the guidance they provide and the consequences for measurement accuracy. 

    ASSESSMENT CRITERION 3 
    The accelerometer is used in accordance with its design and purpose, and in compliance with procedures guiding placement of sensors, taking readings, and general operation. 

    ASSESSMENT CRITERION 4 
    Interpretation of results accurately determines which vibration sources are tolerable, acceptable or harmful and damaging, in accordance with established levels in SANS codes. Relevant calculations are used to verify readings where required. 

    ASSESSMENT CRITERION 5 
    Use and care of the equipment complies with standard operating procedures and manufacturer's specifications. 

    SPECIFIC OUTCOME 3 
    Recommend measures to limit vibration-related noise. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Different options for vibration control are identified and explained in terms of their characteristics, typical application and cost effectiveness. 
    ASSESSMENT CRITERION RANGE 
    Options include:
  • Dampening; use of oscillating springs; whole structures mounted on anti-vibration foundations; specialised rubber pads; type of material as a base; link to/separation from foundations.
     

  • ASSESSMENT CRITERION 2 
    Input into building planning identifies potential sources of vibration. Advice and/or recommendations are appropriate to the particular context, and consistent with best practice in limiting vibration. 

    ASSESSMENT CRITERION 3 
    Input into Environmental Impact Analyses is relevant and appropriate to the potential for vibration and resulting noise, and consistent with best practice in the field. 

    ASSESSMENT CRITERION 4 
    Particular geological conditions susceptible to vibration are identified, and noted for reference in zoning and planning for buildings and infrastructure. Decisions are informed by awareness of prevailing conditions. 
    ASSESSMENT CRITERION RANGE 
    Conditions include:
  • Dolomite-awareness of geological base/soil types.
     

  • ASSESSMENT CRITERION 5 
    Sources of vibration in current structures are identified, and recommendations are consistent with best practice in vibration control. 


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
    Accreditation Options:
  • Providers of learning towards this unit standard will need to meet the accreditation requirements of the relevant ETQA.

    Moderation Option:
  • The moderation requirements of the relevant ETQA must be met in order to award credit to learners for this unit standard. 

  • UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
    The following essential embedded knowledge will be assessed through assessment of the Specific Outcomes in terms of the stipulated Assessment Criteria. Candidates are unlikely to achieve all the Specific Outcomes, to the standards described in the Assessment Criteria, without knowledge of the listed embedded knowledge. This means that for the most part, the possession or lack of the knowledge can be directly inferred from the quality of the candidate's performance. Where direct assessment of knowledge is required, Assessment Criteria have been included in the body of the unit standard. 

    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.

    Note: Critical in identifying and applying materials to solve noise related problems. 

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

    Note: Work is directed towards the public and the greater good of the community. 

    UNIT STANDARD CCFO ORGANISING 
    Organise and manage themselves and their activities responsibly and effectively.

    Note: Essential in identifying and applying principles across a range of contests. 

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

    Note: Essential in identifying and applying principles across a range of contests. 

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

    Note: Important in working to influence decision making a council level. 

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

    Note: Critical in identifying and applying materials to solve noise related problems. 

    UNIT STANDARD CCFO DEMONSTRATING 
    Demonstrate an understanding of the world as a set of related systems by recognising that problem-solving contexts do not exist in isolation.

    Note: Noise and its impact, and noise management implies an understanding of the "big" picture and the impact of decisions on the broader community. 

    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 
    Notes to Assessors:

    Assessors should keep the following general principles in mind when designing and conducting assessments against this unit standard:
  • Focus the assessment activities on gathering evidence in terms of the main outcome expressed in the title to ensure assessment is integrated rather than fragmented. Remember we want to declare the person competent in terms of the title. Where assessment at title level is unmanageable, then focus assessment around each Specific Outcome, or groups of Specific Outcomes.
  • Make sure that evidence is gathered across the entire range, wherever it applies. Assessment activities should be as close to the real performance as possible, and where simulations or role-plays are used, there should be supporting evidence to show the candidate is able to perform in the real situation.
  • Do not focus the assessment activities on each assessment criterion. Rather make sure the assessment activities focus on outcomes and are sufficient to enable evidence to be gathered around all the Assessment Criteria.
  • The Assessment Criteria provide the specifications against which assessment judgements should be made. In most cases, knowledge can be inferred from the quality of the performances, but in other cases, knowledge and understanding will have to be tested through questioning techniques. Where this is required, there will be Assessment Criteria to specify the standard required.
  • The task of the assessor is to gather sufficient evidence, of the prescribed type and quality, as specified in this unit standard, that the candidate can achieve the outcomes again and again and again. This means assessors will have to judge how many repeat performances are required before they believe the performance is reproducible.
  • All assessments should be conducted in line with the following well documented principles of assessment: appropriateness, fairness, manageability, integration into work or learning, validity, direct, authentic, sufficient, systematic, open and consistent.

    Definition of Terms:

    Terms have been clarified as far as possible through the use of range statements. 

  • QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Core  59325   National Certificate: Environmental Noise Control  Level 5  Level TBA: Pre-2009 was L5  Passed the End Date -
    Status was "Reregistered" 
    2015-06-30  LG SETA 


    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. Avenida (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.