REFERENCE NO: E64 - AUTO 2
1. COURSE NAME: - Instrumentation and Control
2. COURSE DESCRIPTIONS: The course includes the Controlling elements,
Safety and Emergency Procedures, Fault Location and Fault
Protection
3. NUMBER OF UNITS FOR LECTURE AND LABORATORY:
3 LECTURE, 0 LABORATORY = 3 UNITS
4. NUMBER OF CONTACT HOURS PER WEEK:
3 LECTURE, 0 LABORATORY = 3 HOURS
5. PREREQUISITE: Fundamentals of Automation and Control
6. COURSE OBJECTIVES: The students shall be able to receive sufficient
knowledge in instrumentation and control, understand and
supervise the use of the systems normally installed in the ships
FUNCTION: F2 - Electrical and Electronics and Control Engineering at the
Operational Level and F3 - Maintenance and Repair at
operational level
7. COURSE OUTLINE:
7.1. Controlling Elements
7.1.1 Pneumatic
7.1.2 Electrical Servomotors
7.1.3 Hydraulic Servomotors
7.2. Safety and Emergency Procedures
7.3. Fault Location
7.4. Fault Protection
LEARNING OBJECTIVES/OUTCOMES:
The students shall be able to . . . . . .
7.1 Controlling Elements
7.1.1 Pneumatic
7.1.1.1 state that the final controller might be operated
pneumatically, hydraulically or electrically
7.1.1.2 sketch a diaphragm-operated control valve
7.1.1.3 describe the characteristics and applications of:
7.1.1.3.1 mitre valve
7.1.1.3.2 vee-ported valves
7.1.1.4 explain what is meant by “turn-down ratio”
7.1.1.5 describe the conditions which may dictate the need for
a positioner
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7.1.1.6 describe the principal feature of a positioner
7.1.1.7 explain the circumstances when piston actuators might
be used
7.1.1.8 describe the conditions where butterfly valves might be
used
7.1.1.9 describe the wax-element temperature-control valve
and state its normal temperature range
7.1.2 Electrical Servomotors
7.1.2.1 describe the dc servomotor and explains how it varies
from the common motor
7.1.2.2 explain the problems of using a three-phase ac machine
as a servomotor
7.1.2.3 describe the applications of a two-phase ac servomotor,
explaining how its characteristics can be varied
7.1.3 Hyrdaulic Servomotor
7.1.3.1 describe the principles of swash plate pump
7.1.3.2 explain the advantage of using a high pressures
7.1.3.3 explain the applications of a hydraulic ram servomotor
7.2 Safety And Emergency Procedures
7.2.1 state the safety precautions necessary before repair
commencing work
7.2.2 state the isolation procedures required for electrical equipment
7.2.3 state the safety and isolation precautions necessary before
commencing work
7.2.4 explain the purpose of interlocks fitted to circuit breakers
7.2.5 explain the danger associated with the spaces in the vicinity of
busbars
7.2.6 explain the potential danger of instrument voltage/current
transformer circuits and safe for working on such circuits
7.2.7 describe the procedure if a fault develops with a miniature
circuit breaker
7.2.8 describe the protection normally provided on the doors of
switchboard cubicles
7.2.9 explain that safety and emergency procedures are documented
in the ship’s safety management system
7.3 Fault Location
7.3.1 describe the essential requirements for the automatic operation
of marine machinery
7.3.2 use control and instrumentation terminology in its correct
context
7.3.3 compare pneumatic, hydraulic and electronic-electrical control
systems
7.3.4 describe a simple control loop
7.3.5 name analogue and digital devices
7.3.6 locate faults in simple control systems
7.3.7 on locating fault takes actions to best prevent damage
7.4.
Fault Protection
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7.4.1
7.4.2
7.4.3
7.4.4
explain why fault protection is essential
name the component parts of fault-protection equipment
explain why fault currents can be extremely high
name the three types of over current-protection relay and describes
the principles of operation of each
7.4.5 explain the advantages and disadvantages of high-rupturingcapacity fuses
7.4.6 name the protection provided against:
7.4.6.1 short circuits
7.4.6.2
small overloads
7.4.7 describe the procedure when replacing a blown fuse
7.4.8 explain in simple terms, preferential tripping when overloaded
occurs
7.4.9 explain the purpose of under voltage protection of generators and of
motors
7.4.10 explain the purpose of reverse power protection
7.4.11 sketch the layout of a typical main switchboard, indicating the
function of the main parts
7.4.12 explain the danger associated with the spaces in the vicinity of
busbar
7.4.13 explain the use of transformers for switchboard instruments, stating
the voltages and current produced
7.4.14 describe the earthing of instruments
7.4.15 explain the potential danger of instrument voltage/current
transformer circuits and the safe procedure for working on such
circuits
7.4.16 explain how status indicator lamps are usually supplied with power
7.4.17 describe the procedure if a fault develops with a miniature circuit
breaker describes the protection normally provided on the doors of
switchboard cubicles
7.4.18 adjust, maintains and tests the types of fault protection normally
encountered
8. EQUIPMENT, MATERIALS, CHEMICALS, TEACHING AIDS:
The equipment, materials, chemicals, teaching aids needed in this course
is listed in the attached APPENDIX 1
9. REFERENCES:
9.1 Jackson, L. “Instrumentation and Control Systems”.
(Sunderland, Thomas Reed Publications Ltd., 1979).
9.2 Heinmann Newues. “Notes on Instrumentation and Control”.
revised ed. Oxford, 1983
9.3 Malvino. “Electronic Instrumentation”.
9.4 Tomal. “Electrical Instrumentation Troubleshooting”.
9.5 Jackson. “Instrumentation and Control System”.
9.6 Roy. “Notes and Instrumentation and Control”.
9.7 Patrick. “Electronic Instruments” 1992.
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