Application
This unit of competency defines the skills and knowledge required to create new commercial master key systems and expand existing keying systems, using even cut and rotating constant progression methods.
It applies to master key systems written manually and using a computer master keying package for high security cylinders, primarily for commercial operations.
Where a security survey/site assessment is required unit MEM20035 Perform a site security survey should also be selected.
No licensing, legislative or certification requirements apply to this unit at the time of publication.
Band: This unit has dual status and is to be regarded as both a Specialisation Band A unit and Specialisation Band B unit for progression to C5 (AQF level V).
Unit Weight: 6
What You'll Learn
1. Determine job requirements
- 1.1 Follow standard operating procedures (SOPs)
- 1.2 Comply with work health and safety (WHS) requirements at all times
- 1.3 Select and use personal protective equipment (PPE) in accordance with SOPs
- 1.4 Identify job requirements from specifications
2. Assess customer requirements
- 2.1 Consider physical characteristics of existing locks and other security devices and determine requirement for additional site inspection
- 2.2 Discuss customer access and task requirements and clarify in accordance with SOPs
- 2.3 Interpret architectural plans, floor plans and charts when planning and preparing a master key system in line with scope of job requirements
- 2.4 Evaluate customer requirements with respect to current capacity, and make recommendations for the design of new or expanded system
- 2.5 Identify personal limitations in assessing requirements for master key system and seek assistance from appropriate personnel in accordance with SOPs
3. Design master key system and system modifications
- 3.1 Design commercial master key system to meet customer complex access requirements
- 3.2 Check system for interchange based on specifications
- 3.3 Apply principles and processes of master keying in accordance with industry practice and organisational requirements
4. Finalise system design
- 4.1 Review final system design and keying requirements and confirm with appropriate personnel in accordance with organisational requirements
- 4.2 Prepare documentation to allow for future interpretation and design requirements
- 4.3 Prepare documentation, and process and store in accordance with client, legislative requirements and SOPs
Assessment Requirements
Performance Evidence
Evidence required to demonstrate competence in this unit must be relevant to and satisfy the requirements of the elements and performance criteria and include:
following work instructions, standard operating procedures (SOPs) and safe work practices
discussing customer access and task requirements and clarifying in accordance with SOPs
interpreting architectural plans, floor plans and charts when developing and implementing a master key system
evaluating system and expansion requirements
determining and designing the required structure of a commercial master keying system and key matrix based on customer requirements on at least two occasions
recognising personal limitations in assessing requirements for key and master key systems and seeking assistance from appropriate personnel in accordance with SOPs
undertaking numerical operations and calculations including mathematical patterns associated with developing and implementing a master key system
developing and reading progression charts for in-line key systems using even cut and rotating constant methods, rotating disc, radial pin and pin sidebar key systems on at least two occasions
developing and reading progression charts and selecting codes that maximise system security
identifying incidental masters in a key system, selecting a group of codes to form a maisioned cylinder, determining the maximum number of codes that can be produced and identifying any unused codes in an existing system on at least two occasions
expanding the existing key system by using multi-broached plugs/barrels and by converting the progression from even cut to rotating constant
checking system for interchange, including accidental interchange, in accordance with SOPs
completing all documentation in accordance with SOPs.
Note: Where a volume and/or frequency is not specified, demonstration must be provided at least once.
Knowledge Evidence
Evidence required to demonstrate the required knowledge for this unit must be relevant to and satisfy the requirements of the elements and performance criteria and include knowledge of:
safe work practices and procedures and use of personal protective equipment (PPE)
ethical considerations in locksmithing work
record keeping and management
types of manufacturer standards, Australian Standards and building standards that impact master key work
product knowledge and limitations
key matrixes and schedules
allowances for expansion
operation and limitations of master key systems
tiers of systems including:
keyed different (KD)
keyed alike (KA)
master key (MK)
grand master key (GMK)
great grand master key (GGMK)
door handing and cylinder types
principles of construction keying, sub-master keying, cross-keying, selective keying and maison keying
criteria for key code selection
strategies for checking key systems for interchange and incidental masters
strategies for using incidental masters to create sub-master keys, cross-keys and selective keys
strategies for selecting groups of codes to form a maisioned cylinder.
Assessment Conditions
Assessors must:
have vocational competency in developing and implementing a master key system at least to the level being assessed with relevant industry knowledge and experience
satisfy the assessor requirements in the Standards for Registered Training Organisations 2015 or its replacement and comply with the National Vocational Education and Training Regulator Act 2011, its replacement or equivalent legislation covering VET regulation in a non-referring state/territory as the case requires.
Where possible, assessment must occur in operational workplace situations. Where this is not possible or where personal safety or environmental damage are limiting factors, assessment must occur in a sufficiently rigorous simulated environment that reflects realistic operational workplace conditions. This must cover all aspects of workplace performance, including environment, task skills, task management skills, contingency management skills and job role environment skills.
Conditions for assessment must include access to all tools, equipment, materials and documentation required, including relevant workplace procedures, product and manufacturing specifications.
Assessment processes and techniques must be appropriate to the language, literacy and numeracy requirements of the work being performed and the needs of the candidate.
Foundation Skills
- text: This section describes those language, literacy, numeracy and employment skills that are essential to performance. Foundation skills essential to performance are explicit in the performance criteria of this unit of competency.
Prerequisite Units
- {'code': 'MEM12024', 'title': 'Perform computations'}
- {'code': 'MEM13015', 'title': 'Work safely and effectively in manufacturing and engineering'}
- {'code': 'MEM16006', 'title': 'Organise and communicate information'}
- {'code': 'MEM18001', 'title': 'Use hand tools'}
- {'code': 'MEM20023', 'title': 'Assemble and test lock mechanisms'}
- {'code': 'MEM20028', 'title': 'Plan and prepare a master key system'}
- {'code': 'MEM20015', 'title': 'Produce hand cut keys'}
- {'code': 'MEM20016', 'title': 'Produce keys by cutting to code'}
- {'code': 'MEM20017', 'title': 'Produce keys by duplication'}
Parent Qualifications
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Request Early AccessLast updated from training.gov.au: 25 February 2026