SAQA

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.

SOUTH AFRICAN QUALIFICATIONS AUTHORITY

REGISTERED UNIT STANDARD THAT HAS PASSED THE END DATE:

Maintain dynamic seals in machines and / or equipment

SAQA US ID	UNIT STANDARD TITLE
13279	Maintain dynamic 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 3	NQF Level 03	3
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
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

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 3) and related qualifications.

Qualifying learners are able to identify types of dynamic seals, select for specific use, install and test dynamic 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:

Maintain static seals and bearings in machines and equipment.

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.

OUTCOME RANGE

Planning and preparation includes obtaining documentation, interpreting engineering drawings, maintenance schedules and procedures and selecting appropriate tools and equipment.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

Results achieved
1. Site and equipment are prepared for installation
2. Dynamic seal is maintained
3. Installation site is restored to a safe and serviceable condition
4. Appropriate personal protective equipment is worn and used

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

Understanding confirmed
1. Respond to 'what if' and 'why' questions covering:

Dynamic seals and their characteristics

The installation process ż sequence, procedures and techniques

Mechanical aids used

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

Applicable dynamic seal theory

Safety

Reporting and documentation requirements

Handling and care of dynamic seals

Costs regarding seals and seal replacement

Use of sealing medium

Purpose of cooling medium (where applied)

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

SPECIFIC OUTCOME 2

Prepare site and equipment for seal replacement.

OUTCOME RANGE

Preparation includes ensuring system is safe .

Making system safe includes isolation, depressurisation and using protective equipment.

Isolation includes electrical and mechanical energy.

Equipment preparation includes decontamination of equipment

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

Dynamic seals and their characteristics

The installation process ż sequence, procedures and techniques

Mechanical aids used

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

Applicable dynamic seal theory

Safety

Reporting and documentation requirements

Handling and care of dynamic seals

Costs regarding seals and seal replacement

Use of sealing medium

Purpose of cooling medium (where applied)

SPECIFIC OUTCOME 3

Maintain dynamic seals.

OUTCOME NOTES

Identify problems and take corrective action

OUTCOME RANGE

Seal types include balanced and unbalanced mechanical seals.

Maintenance includes checking / measuring shaft run-out, shaft float, sharp edges, shaft finish, stuffing box sealing surfaces and condition of studs.

Maintenance includes seal setting where applicable.

Problems include vibration, low cooling / sealing fluid volumes, excessive wear, leaks and overheating.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

Dynamic seals and their characteristics

The installation process ż sequence, procedures and techniques

Mechanical aids used

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

Applicable dynamic seal theory

Safety

Reporting and documentation requirements

Handling and care of dynamic seals

Costs regarding seals and seal replacement

Use of sealing medium

Purpose of cooling medium (where applied)

SPECIFIC OUTCOME 4

Check equipment for compliance with operational requirements.

OUTCOME RANGE

Operational requirements include no leaks and adequate sealing / cooling medium

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

Dynamic seals and their characteristics

The installation process ż sequence, procedures and techniques

Mechanical aids used

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

Applicable dynamic seal theory

Safety

Reporting and documentation requirements

Handling and care of dynamic seals

Costs regarding seals and seal replacement

Use of sealing medium

Purpose of cooling medium (where applied)

SPECIFIC OUTCOME 5

Care for and store system maintenance tools and equipment.

OUTCOME RANGE

Tools and equipment include absorbent material, hand tools and cleaning equipment and fluids

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

Dynamic seals and their characteristics

The installation process ż sequence, procedures and techniques

Mechanical aids used

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

Applicable dynamic seal theory

Safety

Reporting and documentation requirements

Handling and care of dynamic seals

Costs regarding seals and seal replacement

Use of sealing medium

Purpose of cooling medium (where applied)

SPECIFIC OUTCOME 6

Record information on work done.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

Dynamic seals and their characteristics

The installation process ż sequence, procedures and techniques

Mechanical aids used

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

Applicable dynamic seal theory

Safety

Reporting and documentation requirements

Handling and care of dynamic seals

Costs regarding seals and seal replacement

Use of sealing medium

Purpose of cooling medium (where applied)

SPECIFIC OUTCOME 7

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

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

Dynamic seals and their characteristics

The installation process ż sequence, procedures and techniques

Mechanical aids used

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

Applicable dynamic seal theory

Safety

Reporting and documentation requirements

Handling and care of dynamic seals

Costs regarding seals and seal replacement

Use of sealing medium

Purpose of cooling medium (where applied)

SPECIFIC OUTCOME 8

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

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

Dynamic seals and their characteristics

The installation process ż sequence, procedures and techniques

Mechanical aids used

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

Applicable dynamic seal theory

Safety

Reporting and documentation requirements

Handling and care of dynamic seals

Costs regarding seals and seal replacement

Use of sealing medium

Purpose of cooling medium (where applied)

UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS

My 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. My assessor will (at the very least) be accredited and have a technical qualification in this learning area.

I can be assessed in the language of my choice although if I have to report incidents or conditions to someone else, I will be assessed on my ability to report in the language commonly used in my working environment.

I will be assessed in the workplace but I can submit documents, projects, test results and assignments that were not produced in the workplace.

I 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:

Dynamic seals and seal assemblies

Tools and equipment used in replacement and fitting process

Engineering drawings

Quality terminology and concepts

Attributes, descriptions, characteristics & properties:

End users of machine / equipment

Typical dynamic seal defects

Properties of sealing face material and their application

Sensory cues:

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

Purpose of:

Preparing site and equipment for maintenance

Testing seal assemblies

Quality checks and procedures

Reporting problems

Cooling medium

Sealing medium

Ensuring system is safe

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. using poor quality, damaged or faulty equipment in the maintenance process, delaying reports about problems in work area

Cost implication of dynamic seal abuse

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

Dynamic seal handling and installation

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 relating to dynamic seals and their assemblies, e.g. pressure, friction, heat, properties of polymers

Applicable mathematical concepts

Relationships, systems:

The relationship of the maintained seal to the production process

UNIT STANDARD DEVELOPMENTAL OUTCOME

N/A

UNIT STANDARD LINKAGES

N/A

Critical Cross-field Outcomes (CCFO):

UNIT STANDARD CCFO IDENTIFYING

Identify and solve problems:

Recognise and respond to non-conforming dynamic 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 dynamic 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 dynamic 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 dynamic 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 dynamic seals to the production process

Justify my actions as appropriate

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
Core	58288	National Certificate: Electro-Mechanics	Level 3	NQF Level 03	Passed the End Date - Status was "Reregistered"	2023-06-30	As per Learning Programmes recorded against this Qual
Core	23274	National Certificate: Mechanical Engineering: Fitting	Level 3	NQF Level 03	Passed the End Date - Status was "Reregistered"	2008-06-25	MERSETA
Core	23255	National Certificate: Mechanical Engineering: Fitting and Machining	Level 3	NQF Level 03	Passed the End Date - Status was "Reregistered"	2023-06-30	MERSETA
Elective	48727	National Certificate: Sugar Manufacturing and Refining Technical Maintenance	Level 3	NQF Level 03	Passed the End Date - Status was "Reregistered"	2023-06-30	AgriSETA
Elective	59709	Further Education and Training Certificate: Mechanical Engineering: Fitting	Level 4	NQF Level 04	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.

1.	ADCORP TECHNICAL TRAINING (PTY) LTD
2.	ALLOYS HEAD OFFICE
3.	FOSKOR (PTY) LTD
4.	HARMONY GOLD MINING CO LTD
5.	KUMBA IRON ORE (SISHEN)
6.	PALABORA COPPER (PTY) LTD
7.	SASOL GLOBAL LEARNING
8.	SIBANYE GOLD ACADEMY PROPRIETARY LIMITED