Page 95 - CAPE Green Engineering Syllabus 2016.docx_Neat

-4- 02165020/CAPE/KMS 2015 SPEC

GREEN ENGINEERING
UNIT 1 - PAPER 02
KEY AND MARK SCHEME

Question 2.

S.O Suggested Response Mark Marks
Allocation KC AK PS

1:1:11 (a) LCA is a tool used to determine the raw 22
materials, energy use, wastes, and
emissions associated with the product's
life cycle.

1:1:11 (b)  To minimize the magnitude of 2 marks 4
pollution. each for

 To identify processes, ingredients, any 2
and systems that are major.
contributors to environmental impacts

 To compare different options within a
particular process with the objective
of minimizing environmental impacts.

 To provide guidance in long-term
strategic planning concerning trends
in product design and materials.

 To optimize recycling of materials and
waste.

 To apply the most appropriate
pollution prevention and/or abatement
techniques.

1:1:11 (c)  Life cycle inventory (1): Determine 8 26
the emissions that occur and the raw
materials and energy that are used
during the life-cycle of a product.
(3)

 Life cycle impact assessment: Assess
what the impacts of these emissions
and raw material depletions are.

 Improvement analysis or
interpretation: Interpret the results
of the impact assessment in order to
suggest improvements. When LCA is
conducted to compare products this
step may consist of recommending the
most environmentally desirable
product.