Learning outcome

Perform mass and energy

balances, identify all key

and utility streams and

specify their flow,

composition data.

Use of computer based

flow sheet software to

perform mass and energy

balances.

Make an assessment of

potential hazards

Make an assessment of

sustainability of the plant

Make a material selection

for chemical engineering

equipment

Mark

0-5

Limited and uncomplete

mass and energy balances.

Calculations not given and

explained.

Limited or no Hysys flow

sheet has been created.

Poor selection of process

safety aspects and no

details given on how these

related to the overall design.

Report lacks any discussion

and criticism of the process

safety methods used.

0-3

A poor report, lacking logical

and systematic assessment

of positive and negative

impacts on all three pillars of

sustainability, or not

assessing all three pillars.

Generally incorrect or

missing identification of risks

and mitigations. Shows lack

of understanding of lecture

content.

0-3

A poor report, where only

some of the mechanical,

thermal and chemical

demands on the 3 key units

are appraised. Following a

poor assessment of the

materials properties

necessary to meet these

demands, some materials

are identified for each of the

3 key units. A discussion of

these materials is missing

and/or selection is poor or

incorrect. Shows lack of

understanding of lecture

6-10

Mass and energy balances for

the process with major errors

or omissions. Process

assumptions not given or

unrealistic.

6-10

Hysys flow sheet does not

include all the process units

(e.g. some units not working)

No comparison with manual

calculations is presented.

5-8

A basic report with limited

evidence of understanding of

how the chosen aspects of

safety relate to the design

process. Some discussion of

the process safety aspects is

provided, but this is largely

superficial and contains

misconceptions.

4-6

A basic report, assessing

positive and negative impacts

on all three pillars of

sustainability in a logical and

systematic way. Some risks

are mentioned, but mitigation

and prioritization is incorrect

or missing. Generally shows an

understanding of lecture

content.

4-6

A basic report, where most of

the mechanical, thermal and

chemical demands on the 3

key units are appraised.

Following an incomplete

assessment of the materials

properties necessary to meet

these demands, some

engineering materials are

identified for each of the 3 key

units. A discussion of these

materials leads to the

selection of an appropriate

one. Generally shows an

understanding of lecture

11-15

Complete mass and energy

balances for the whole process

with some errors and omissions.

11-15

Hysys flow sheet for the whole

process has been created with

some errors or omissions. Some

comparison with manual

calculations is presented.

9-12

An acceptable report with an

appropriate selection of multiple

aspects of process safety. A

range of potential process

hazards are identified and

properly considered within the

context of design. Discussion

and criticism of the process

safety methods is provided.

References are used to support

discussion

7-9

An acceptable report, assessing

positive and negative impacts on

all three pillars of sustainability

in a logical and systematic way.

Good identification of risks, with

evidence of prioritization and

proposed mitigation. Some

mention of either temporal,

geographical scales, or unusual

or emergency operations are

present.

7-9

An acceptable report, where the

mechanical, thermal and

chemical demands on the 3 key

units are fully appraised, with

consideration of unusual or

emergency operations. Following

an assessment of the materials

properties necessary to meet

these demands, some

engineering materials are

identified for each of the 3 key

units. A discussion of these

materials leads to the selection

of the most appropriate one.

Quantification and referencing

16-20

Complete mass and energy

balances with no obvious errors

Utility are specified completely.

16-20

Hysys flow sheet has been

created with minor errors.

Advanced features (ie.

adjustment) have been used.

Detailed comparisons (with

manual calculatons) and good

discussion are presented.

13-16

An excellent report with a well

thought out, systematic and

critical review outlining how

design decisions were related to

the chosen process safety

aspects. A clear summary of

process hazards is provided with

a discussion outlining the

challenges and benefits,

advantages and disadvantages

of the methods. Report is well-

referenced throughout

10-12

An excellent report, fully

assessing positive and negative

impacts on all three pillars of

sustainability in a logical and

systematic way (e.g. using the 4

P's). Important risks are

identified based on a

prioritisation of likelihood and

impact, and sensible mitigations

are proposed. Quantitative

targets for improvement are

provided. Examples of

consideration of temporal and

geographical scales, as well as

unusual and emergency

operations are present.

10-12

An excellent report, where the

mechanical, thermal and

chemical demands on the 3 key

units are fully appraised, with

consideration of unusual and

emergency operations. Following

a convincing assessment of the

materials properties necessary

to meet these demands, an

appropriate range of engineering

materials are identified for each

of the 3 key units. An analytical

discussion of these materials

leads to the selection of the

most appropriate one.

Newcastle

University

21-25

Complete mass and energy

balances presented in a highly

professional and informative

format beyond expectation at this

stage

21-25

Sophisticated Hysys sheet for the

whole process has been created

demonstrating knowledge beyond

the lecture content. Detailed

comparisons with excellent

discussion is presented.

17-20

As before, but with additional signs

of creativity and innovation

beyond the lecture content.

Original and inciteful discussion

presented in a highly professional

and informative format.

13-15

An exemplary report incorporating

all points from the previous

descriptor, but additionally

demonstrating knowledge beyond

the lecture content, and/or

showing signs of engineering flair

and professionalism beyond

expectation at this stage.

13-15

An exemplary report incorporating

all points from the previous

descriptor, but additionally

demonstrating knowledge beyond

the lecture content, and/or

showing signs of engineering flair

and professionalism beyond

expectation at this stage.