Elements describe the essential outcomes. | Performance criteria describe the performance needed to demonstrate achievement of the element. |
1 | Analyse open and closed loop systems | 1.1 | Open loop systems are distinguished from closed loop systems |
1.2 | Closed loop manual, time based automatic open loop and feed forward open loop are explained |
2 | Explain principles and operation of pneumatic control element and systems | 2.1 | Operation of a nozzle flapper and pneumatic amplifier unit is analysed and applied to transmitters, basic controllers and valve positioners |
2.2 | Control air supply system is defined |
2.3 | Principle of operation of direct and reverse acting pneumatic relays and application is clarified |
2.4 | Application of computing relays is analysed |
3 | Compare temperature transmitters | 3.1 | Pneumatic temperature transmitter is defined |
3.2 | Effect of changes in ambient temperature on thermocouples and resistance temperature detectors (RTD) is explained |
3.3 | Testing procedures and methods of simulation for both RTDs and thermocouples are explained |
3.4 | Characteristics and application of thermistors are outlined |
4 | Analyse application of differential pressure transmitters | 4.1 | Application of differential pressure transmitters on board ships is confirmed |
4.2 | Arrangements of differential pressure transmitters for measurement of liquid levels in both closed and open tanks are explained |
4.3 | Mechanics for viscosity measurement using a differential pressure transmitter are analysed |
4.4 | Principle of using a differential pressure transmitter for flow measurement and the need for a square root extractor is explained |
4.5 | Use of a differential pressure transmitter for flow measurement is compared and contrasted with other types of meters |
5 | Explain engine room monitoring systems | 5.1 | Application of different speed sensing systems is analysed |
5.2 | Operating principles of torque monitoring systems applied to propeller shafting are explained |
5.3 | Arrangements of shaft power and indicated power monitoring are compared |
5.4 | Horizontal and vertical float level systems are compared with other tank level monitoring system in common use |
5.5 | Operating principle of oil-water interface sensor is explained |
5.6 | Methods of bearing temperature monitoring applied to diesel engine rotating parts are outlined |
5.7 | Machinery space monitoring and alarm system from a central control room are outlined |
6 | Explain procedure for transmitter calibration | 6.1 | Procedure for transmitter calibration for both pneumatic and electronic transmitters is applied |
6.2 | Test equipment is used for transmitter calibration |
6.3 | Relationship between process variables and output signals is demonstrated in a graph |
6.4 | Effects of transmitter dead band are defined |
7 | Explain operation of pneumatic 3 term controller and controller adjustment procedures | 7.1 | Common controller actions and applications are outlined |
7.2 | Operating principle of pneumatic 3 term controllers is outlined |
7.3 | Procedure for adjusting 3 term pneumatic controllers is applied and effects if incorrectly adjustment are explained |
7.4 | Typical controller settings for a PID controller are detailed |
7.5 | Integrated hand/auto station and 3 term controller are outlined and bumpless transfer is demonstrated |
8 | Explain actuators and control valves | 8.1 | Arrangements to provide fail safe requirements are outlined |
8.2 | Control valve and actuator are explained |
8.3 | Different types of actuators are identified |
8.4 | Operating principle of pneumatic valve positioners is explained |
9 | Analyse operation of hydraulic governors | 9.1 | Operating principle of proportional action hydraulic governors is explained |
9.2 | Importance of spring stiffness in relation to response is clarified |
9.3 | Purpose of an isochronous governor is outlined |
9.4 | Principle of operation of an isochronous hydraulic governor is outlined |
9.5 | Governor droop and its requirements for stable load sharing and engine stability is explained |
10 | Interpret electronic systems circuit diagrams | 10.1 | Electrical symbols commonly used in electronic circuits and sub-circuits are defined |
10.2 | Printed and colour codes used in electronic circuits are defined |
10.3 | Operation and maintenance manuals commonly used in the fault finding electronic circuits are used correctly |
11 | Explain basic operation of programmable logic controllers | 11.1 | Principles and operation of integrated circuit gates are explained |
11.2 | Operational function of input/output devices connected to a digital programmable logic controller is detailed |
11.3 | Methods of operation of flip flops, adders, counters, multiplexers and decoders are outlined |
11.4 | Methods employed when changing set point values in a digital programmable logic controller are outlined |
12 | Explain typical machinery space control loops and unmanned machinery spaces requirements | 12.1 | Fuel oil heating, LO cooling and JW cooling loop showing cascade and split range systems are outlined |
12.2 | Fuel oil viscosity control loop is outlined |
12.3 | Common methods of boiler water control and simple combustion control with burner management for an auxiliary boiler are outlined |
12.4 | Requirements and system arrangements for bridge control of main propulsion machinery including change over from local to bridge are explained |
12.5 | Common pressure control loops found in a ship’s engine room are identified |
12.6 | Unmanned machinery spaces (UMS) requirements are outlined |
12.7 | Troubleshooting procedures associated with control systems are outlined |
12.8 | Procedures for software version control are outlined |