Programmable Logic Controllers, SCADA and Distributed Control Systems, Industrial Data Communication

Advanced Diploma of Electrical and Instrumentation (E & I) Engineering for Oil and Gas Facilities

(DEI 52684WA)

Module 19 : SCADA and DCS Systems

Practical Assignment

V1.4

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1. 1. 1. AGREEMENT DATE: 2-9-17

Created By:		Date:
Reviewed By:		Date:
Reviewed By:		Date:

Programmable Logic Controllers, SCADA and Distributed Control Systems, Industrial Data Communication 1

General Information for Candidates

How is this task assessed?

After completion of this assessment task, you will be assessed as ‘satisfactory’ or ‘not satisfactory’. You will be given feedback via Moodle and have an opportunity to submit additional evidence.

For a ‘satisfactory’ result in this task, all sections must be answered to a ‘satisfactory’ standard with a mark of 50% or above achieved.

At Advanced Diploma level a ‘satisfactory’ standard, as stipulated by the Australian Qualifications Framework (AQF), means that you will demonstrate the application of knowledge and skills:

with depth in areas of specialisation, in contexts subject to change
with initiative and judgment in planning, design, technical or management functions with some direction
to adapt a range of fundamental principles and complex techniques to known and unknown situations
across a broad range of technical or management functions with accountability for personal outputs and
personal and team outcomes within broad parameters

Assessors also make decisions based on the following considerations:

all parts of the assessment task/s have been completed to a standard that satisfactorily meets the requirements set out in all of the assessment criteria (as set out in the unit/module outlines).
the assessment tasks are the student’s own work, except as appropriately acknowledged by the use of referencing.
the evidence is recent and knowledge is up-to-date
the evidence is consistent showing competency over a period of time suggesting sustained performance (i.e. not just a one off).

Assessment Task Instructions:

The best marks can be earned by giving concise brief answers that addresses the questions as put to you.
The time indicated is tentative and is not meant to restrict your answers
The main idea behind the use of assignment questions are for you the student to learn and understand the material by reading it and answering the questions as put. Cutting and pasting from internet sites or the study material does not enhance that learning process. However, appropriate diagrams can be pasted if you cannot draw them.
Attempt ALL questions
Use this document also for furnishing your answers by typing the answers after each question without deleting the question. Use this Microsoft Word document as it stands. Make sure that you preserve the original question number format and that you don’t change the question numbers by adding extra lines or deleting existing ones.
Do not add extra pictures etc as Annexures but add the pictures and diagrams directly into this main answer sheet by pasting. Handrawn sketches can be inserted after scanning but please ensure that the assignment filesize does not become big (more than 10 MB).

Refer in the text to diagrams and pictures etc that you have drawn or pasted in. Do not only paste them into the document without referring to them in the text.

Finally when saving your document (must be WORD FORMAT), ensure you save the title to include your name : COURSECODE_MODULE#_ASSIGNMENT_VERSION#_YOURNAME

e.g. DMC_Module9_Assignment_v3_BOB_BROWN

Please ensure that all answers must be in your own words. Copying and pasting is not allowed.

Please ensure you sign and date the below statement to verify your assessment submission as your own material.

Module 19 Practical Assignment

Assessment Points:

Supply the required answers below in blue font (not red or black).
You must submit this assessment along with the written component.
You must answer all questions.

PLEASE NOTE:

To access the lab for Question 3, refer to the “Citect Install Setup Instructions” pdf.

Citect SCADA & Citect OPC are located in Lab 2 on Electromeet

Date
Marks Achieved:				Percentage:
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Question 1

(15 marks)

The following is very much an open-ended question. I would expect your answer to cover around three to five pages (drawings included) but if you want to do more, it’s your call. However, one page will not be accepted!

If you did not get the answers from the webinar or cannot find it in the notes, please ‘Google’. Alternatively chat to a vendor or to your IT guys, if you are not a ‘networking person’ yourself.

Use a free screen capture utility such as Screenhunter Free for snagging.

A water utility in a city has its control center located in a house in the suburbs. The water main, running in a circular fashion around the city, has 4 pumping/filtration stations (A, B, C and D), spaced approximately 12 km apart.
Single mode fiber is available between all the pumping stations.
It has been decided that, as a matter of policy, Ethernet will be used throughout for data communications, with a star topology at the control center and a ring topology for linking the pumping stations. Redundancy to and from the RTUs is considered mandatory.
A fifth station, E, monitors the water level in a dam, situated on top of a mountain overlooking the city. There is no cabling available in this case and point-to-point wireless is problematic because of a few skyscrapers in the way.

At the control center there are three HMI stations.
At each pumping station there is an RTU with analog inputs, digital inputs, and digital outputs. Do not worry too much about the numbers here; let’s assume that a few of each will do.
The SCADA network needs to be connected to the corporate WAN, since the utility has operations in other cities as well. Keep security issues in mind.

Draw a DETAILED diagram of your system, showing all components and inter-connections. Please do not draw diagrams by hand.

Download an evaluation copy of Lanflow (or similar), and snag your drawings in JPG format, then paste them into the Word document.

Please draw star configurations as stars, and rings as rings. If your software forces you to represent all topologies as buses, please make appropriate comments on the drawing.

Your Answer

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Question 2

( refer to mark allocation below)

Note – This question is mandatory. All 4 sections must be answered and students must obtain at least 10/15 in order to be deemed competent

This is a very open-ended question. Consider a SCADA system with the following configuration.

SCADA system


SCADA server(s)		1
Historian(s)		1
Router to WAN		1
HMIs		1
Firewall(s)/DMZ		1
Redundancy to RTUs		1
Switch(es) in control room		1
Connection to switches		1
3G/Vsat or suitable alternative		1
RTUs correctly interfaced to fiber		1

The following picture may serve as a guide.

Programmable Logic Controllers, SCADA and Distributed Control Systems, Industrial Data Communication 2

( 5 marks)

a) Provide a description of your system, pointing out any assumptions you have made.

About 1 page will be sufficient.

Your Answer

Assessor Feedback

( 6 marks)

b) Give full details of the Ethernet and wireless components you are using. Include brand name, model number and picture (snag) of the particular device you are using.
6 Marks: 3 marks each (1 for brand, 1 for model #, 1 for picture) for
(i) the ring switches, and
(ii) the wireless/3G devices.

Your Answer

Assessor Feedback

( 4 marks)

c) Give full details of the RTUs you are using. Include brand name, model number, I/O configuration and snag of the particular device you are using.
Info for RTU to include (1 mark each) brand, model number, I/O configuration, picture.

Your Answer

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Question 3

( 20 marks)

Follow the “Citect Install Setup Instructions” pdf (This software is available in Lab 2 on Electromeet).

Run the animated plant view, and then use the OPC client (also Lab 2) to extract and display the value of LOOP2_PV.

Snag the desktop showing both Citect and the OPC client.

For additional help, refer to the ‘M19 Practical Assignment Instructions” document on Moodle.

Marks 20 - (10 marks for snag showing Citect running, 10 marks for snag showing values on OPC client)

Your Answer

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