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SOUTH AFRICAN QUALIFICATIONS AUTHORITY

REGISTERED UNIT STANDARD THAT HAS PASSED THE END DATE:

Maintain static seals in machines and / or equipment

SAQA US ID	UNIT STANDARD TITLE
13219	Maintain static seals in machines and / or equipment
ORIGINATOR
SGB Manufacturing and Assembly Processes
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-
FIELD			SUBFIELD
Field 06 - Manufacturing, Engineering and Technology			Manufacturing and Assembly
ABET BAND	UNIT STANDARD TYPE	PRE-2009 NQF LEVEL	NQF LEVEL	CREDITS
Undefined	Regular	Level 2	NQF Level 02	4
REGISTRATION STATUS		REGISTRATION START DATE	REGISTRATION END DATE	SAQA DECISION NUMBER
Passed the End Date - Status was "Reregistered"		2018-07-01	2023-06-30	SAQA 06120/18
LAST DATE FOR ENROLMENT		LAST DATE FOR ACHIEVEMENT
2026-06-30		2029-06-30

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

Learners in the field of engineering require the skills, values and knowledge reflected in this unit standard.

The learning outcomes in this unit standard also contribute to the exit level outcomes required for the National Certificate in Engineering Fitting (NQF level 2) and related qualifications.

Qualifying learners are able to identify types of static seals, select for specific use, replace, and test static seals used in machines and equipment.

LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING

This unit standard has been designed as part of a progression. It is one of a series of unit standards for machine maintenance in the engineering area.

The credits allocated to this unit standard assume that a learner has already learned to use engineering hand tools, power tools and measuring equipment and maintain a safe and productive work area.

UNIT STANDARD RANGE

The ranges as indicated under the specific outcomes determine the scope and level of this unit standard.
Work is generally, but not exclusively, carried out in a team environment.

All work is performed under supervision and according to worksite and manufacturer specifications and occupational safety, health and environmental legislation.

Specific Outcomes and Assessment Criteria:

SPECIFIC OUTCOME 1

Plan and prepare for seal replacement.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. Site and equipment are prepared for installation.

ASSESSMENT CRITERION NOTES

Indicators:

1. Seal types are accurately identified and seal assembly inspected according to manufacturer specifications
2. Appropriate tools and correct replacement method is determined relevant to seal assembly
3. Seal assemblies are correctly removed from machine / equipment and component parts inspected for conformance with manufacturer specifications
4. Appropriate seals and replacement parts required are selected and obtained
5. Seal and seal assemblies are prepared for installation in accordance with manufacturer requirements
6. Equipment is prepared and inspected for installation
7. Seals and seal assemblies are correctly fitted to machines and / or equipment
8. Seal assemblies are tested for conformance with specifications
9. Appropriate lubrication is applied where necessary to manufacturer specifications
10. Work is carried out in a safe manner in accordance with schedules and manufacturer specifications
11. Replacement process cycle time meets workplace requirements
12. A clean and tidy work environment is maintained
13. No delays are caused as a result of poor planning for replacing seals and identifying problems
14. Seal replacement report is accurate and clear
15. Applicable health, safety and environmental procedures are adhered to

Understanding confirmed:

Respond to 'what if' and 'why' questions covering:

The installation process - sequence, procedures and techniques

Mechanical aids used

Quality awareness: implications of seal replacements that do not comply with operational requirements

Applicable replacement theory

Safety

Reporting and documentation requirements

Explain the implications of not adhering to sequence of activities and operations as described in the specific outcomes and making decisions inappropriate to the task.

ASSESSMENT CRITERION 2

2. Static seal is maintained.

ASSESSMENT CRITERION NOTES

The installation process - sequence, procedures and techniques

Mechanical aids used

Quality awareness: implications of seal replacements that do not comply with operational requirements

Applicable replacement theory

Safety

ASSESSMENT CRITERION 3

3. Installation is checked for compliance.

ASSESSMENT CRITERION NOTES

The installation process - sequence, procedures and techniques

Mechanical aids used

Quality awareness: implications of seal replacements that do not comply with operational requirements

Applicable replacement theory

Safety

SPECIFIC OUTCOME 2

Prepare site and equipment for seal replacement.

OUTCOME RANGE

Preparation includes making system safe.

Making system safe includes isolation and applying protective equipment.

Isolation includes electrical and mechanical energy.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. Site and equipment are prepared for installation.

ASSESSMENT CRITERION NOTES

The installation process - sequence, procedures and techniques

Mechanical aids used

Quality awareness: implications of seal replacements that do not comply with operational requirements

Applicable replacement theory

Safety

ASSESSMENT CRITERION 2

2. Static seal is maintained.

ASSESSMENT CRITERION NOTES

The installation process - sequence, procedures and techniques

Mechanical aids used

Quality awareness: implications of seal replacements that do not comply with operational requirements

Applicable replacement theory

Safety

ASSESSMENT CRITERION 3

3. Installation is checked for compliance.

ASSESSMENT CRITERION NOTES

The installation process - sequence, procedures and techniques

Mechanical aids used

Quality awareness: implications of seal replacements that do not comply with operational requirements

Applicable replacement theory

Safety

SPECIFIC OUTCOME 3

Maintain static seals.

OUTCOME NOTES

Identify problems and take corrective action

OUTCOME RANGE

Seal types include gaskets, "O" rings, sealing compounds, sheet, metallic and spiral wound, oil seals.

Replacement parts include making of "O" ring seals.

Problems include leaks, burning of seals, non-compatibility, leaks, thickness and size of seal

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. Site and equipment are prepared for installation.

ASSESSMENT CRITERION NOTES

The installation process - sequence, procedures and techniques

Mechanical aids used

Quality awareness: implications of seal replacements that do not comply with operational requirements

Applicable replacement theory

Safety

ASSESSMENT CRITERION 2

2. Static seal is maintained.

ASSESSMENT CRITERION NOTES

The installation process - sequence, procedures and techniques

Mechanical aids used

Quality awareness: implications of seal replacements that do not comply with operational requirements

Applicable replacement theory

Safety

ASSESSMENT CRITERION 3

3. Installation is checked for compliance.

ASSESSMENT CRITERION NOTES

The installation process - sequence, procedures and techniques

Mechanical aids used

Quality awareness: implications of seal replacements that do not comply with operational requirements

Applicable replacement theory

Safety

SPECIFIC OUTCOME 4

Check equipment for compliance with operational requirements.

OUTCOME RANGE

Operational requirements include current static seal used, current tightening of static seal, correct, compatibility with different fluids and pressure capacity, suitable seal type for the application.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. Site and equipment are prepared for installation.

ASSESSMENT CRITERION NOTES

The installation process - sequence, procedures and techniques

Mechanical aids used

Quality awareness: implications of seal replacements that do not comply with operational requirements

Applicable replacement theory

Safety

ASSESSMENT CRITERION 2

2. Static seal is maintained.

ASSESSMENT CRITERION NOTES

The installation process - sequence, procedures and techniques

Mechanical aids used

Quality awareness: implications of seal replacements that do not comply with operational requirements

Applicable replacement theory

Safety

ASSESSMENT CRITERION 3

3. Installation is checked for compliance.

ASSESSMENT CRITERION NOTES

The installation process - sequence, procedures and techniques

Mechanical aids used

Quality awareness: implications of seal replacements that do not comply with operational requirements

Applicable replacement theory

Safety

SPECIFIC OUTCOME 5

Record information on work done.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. Site and equipment are prepared for installation.

ASSESSMENT CRITERION NOTES

The installation process - sequence, procedures and techniques

Mechanical aids used

Quality awareness: implications of seal replacements that do not comply with operational requirements

Applicable replacement theory

Safety

ASSESSMENT CRITERION 2

2. Static seal is maintained.

ASSESSMENT CRITERION NOTES

The installation process - sequence, procedures and techniques

Mechanical aids used

Quality awareness: implications of seal replacements that do not comply with operational requirements

Applicable replacement theory

Safety

ASSESSMENT CRITERION 3

3. Installation is checked for compliance.

ASSESSMENT CRITERION NOTES

The installation process - sequence, procedures and techniques

Mechanical aids used

Quality awareness: implications of seal replacements that do not comply with operational requirements

Applicable replacement theory

Safety

SPECIFIC OUTCOME 6

Discuss and explain incidents and problems related to replacing static seals.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. Site and equipment are prepared for installation.

ASSESSMENT CRITERION NOTES

The installation process - sequence, procedures and techniques

Mechanical aids used

Quality awareness: implications of seal replacements that do not comply with operational requirements

Applicable replacement theory

Safety

ASSESSMENT CRITERION 2

2. Static seal is maintained.

ASSESSMENT CRITERION NOTES

The installation process - sequence, procedures and techniques

Mechanical aids used

Quality awareness: implications of seal replacements that do not comply with operational requirements

Applicable replacement theory

Safety

ASSESSMENT CRITERION 3

3. Installation is checked for compliance.

ASSESSMENT CRITERION NOTES

The installation process - sequence, procedures and techniques

Mechanical aids used

Quality awareness: implications of seal replacements that do not comply with operational requirements

Applicable replacement theory

Safety

SPECIFIC OUTCOME 7

Work safely with care for self, fellow workers, machines, equipment, materials and environment.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. Site and equipment are prepared for installation.

ASSESSMENT CRITERION NOTES

The installation process - sequence, procedures and techniques

Mechanical aids used

Quality awareness: implications of seal replacements that do not comply with operational requirements

Applicable replacement theory

Safety

ASSESSMENT CRITERION 2

2. Static seal is maintained.

ASSESSMENT CRITERION NOTES

The installation process - sequence, procedures and techniques

Mechanical aids used

Quality awareness: implications of seal replacements that do not comply with operational requirements

Applicable replacement theory

Safety

ASSESSMENT CRITERION 3

3. Installation is checked for compliance.

ASSESSMENT CRITERION NOTES

The installation process - sequence, procedures and techniques

Mechanical aids used

Quality awareness: implications of seal replacements that do not comply with operational requirements

Applicable replacement theory

Safety

UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS

The assessment will be governed by the policies and guidelines of the MERSETA Education and Training Quality Assuror who has jurisdiction over this field of learning. The assessor will (at the very least) be accredited and have a technical qualification in this learning area.

The learner can be assessed in the language of his/her choice although s/he has to report incidents or conditions to someone else. The learner will be assessed on his/her ability to report in the language commonly used in his/her working environment.

The learner will be assessed in the workplace but s/he can submit documents, projects, test results and assignments that were not produced in the workplace.

The learner can be assessed against this unit standard to obtain credits or as part of an integrated assessment for a qualification.

UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE

Names & functions of:

Static seals and seal assemblies

Tools and equipment used in replacement and fitting process

Engineering drawings

Quality terminology and concepts

Defects on static seals and seal assemblies

Attributes, descriptions, characteristics & properties:

End users of machine / equipment

Characteristics of static seal material

Sensory cues:

Sensory cues (what I see, hear, smell, feel) utilised for identifying static seal related problems

Purpose of:

Preparing site and equipment for replacement

Testing seal assemblies

Quality checks and procedures

Reporting problems

Processes, events, causes and effects, implications:

Implications of non-conformance

Causes and responses to common problems

Replacement sequence and process

Implications and consequences of situations such as, e.g. poor quality, using damaged or faulty tools equipment, using poor quality, damaged or faulty equipment in the replacement process, delaying reports about problems in work area

Procedures and techniques:

Identifying seals and seal assemblies

Removing seal / seal assembly

Preparing seal assembly for installation

Seal installation techniques

Quality checks and procedures

Reporting procedures

Reason for leaks on static seals

Regulations, legislation, agreements, policies, standards:

Applicable safety, health and environmental protection legislation and standards

Applicable company policies and procedures

Theory: rules, principles, laws:

Applicable mechanical theory covering the replacement of seals and seal assemblies, e.g. pressure, heat (expansion and contraction), heat calculations

Applicable mathematical concepts

Relationships, systems:

The relationship of the replaced seal to the production process

Critical Cross-field Outcomes (CCFO):

UNIT STANDARD CCFO IDENTIFYING

Identify and solve problems:

Recognise and respond to non-conforming seals

UNIT STANDARD CCFO WORKING

Work effectively with others as a member of a team:

Interact with colleagues and team members in order to replace seals

UNIT STANDARD CCFO ORGANISING

Organise and manage my activities and myself:

According to procedures, following regular, consistent methodical work patterns

Manage resources and my time

UNIT STANDARD CCFO COLLECTING

Collect, analyse, organise and critically evaluate information:

Collect sensory and numeric information from the seal replacement process

Classify the information and identify deviations from the norm

UNIT STANDARD CCFO COMMUNICATING

Communicate effectively:

Record outputs and incidents

UNIT STANDARD CCFO SCIENCE

Use science and technology effectively and critically:

Understand and explain mechanical theory relevant to the seal replacement process

UNIT STANDARD CCFO DEMONSTRATING

Demonstrate an understanding of the world as a set of related systems:

Understand and explain the purpose of replacing seals to the production process

Justify my actions as appropriate

REREGISTRATION HISTORY

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

QUALIFICATIONS UTILISING THIS UNIT STANDARD:

	ID	QUALIFICATION TITLE	PRE-2009 NQF LEVEL	NQF LEVEL	STATUS	END DATE	PRIMARY OR DELEGATED QA FUNCTIONARY
Core	58269	National Certificate: Electro-Mechanics	Level 2	NQF Level 02	Passed the End Date - Status was "Reregistered"	2023-06-30	As per Learning Programmes recorded against this Qual
Core	59689	National Certificate: Mechanical Engineering	Level 2	NQF Level 02	Passed the End Date - Status was "Reregistered"	2023-06-30	As per Learning Programmes recorded against this Qual
Core	23273	National Certificate: Mechanical Engineering: Fitting	Level 2	NQF Level 02	Passed the End Date - Status was "Reregistered"	2008-06-25	MERSETA
Core	23254	National Certificate: Mechanical Engineering: Fitting and Machining	Level 2	NQF Level 02	Passed the End Date - Status was "Reregistered"	2008-06-25	MERSETA
Elective	65809	National Certificate: Automotive Manufacturing and Assembly	Level 2	NQF Level 02	Passed the End Date - Status was "Reregistered"	2023-06-30	MERSETA
Elective	78523	National Certificate: Automotive Repair and Maintenance	Level 2	NQF Level 02	Passed the End Date - Status was "Reregistered"	2023-06-30	As per Learning Programmes recorded against this Qual

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.

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