Question

Hello, could you help me solve this question, please?

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Question:

(a) A project has EIGHT (8) activities listed in the following table:

Activity	Immediate Predecessor (s)	Time (Weeks)	Activity	Immediate Predecessor (s)	Time (Weeks)
A	-	2	E	C	3
B	A	5	F	C	7
C	A	3	G	D, E	2
D	B	4	H	F	3

(i) Use the GRAPH PAPER provided to construct a Gantt chart for the above project. [Note: You are to attach the graph paper to the page where this question is answered].

(ii) What is the expected project duration in weeks?

(b) Explain the following TWO (2) terms in lean operations:

(i) Kanban.

(ii) Toyota production system (TPS)

Answer 1

Answer

Part a)

As per problem statement

Activity	Immediate predecessors	Time (Weeks)
A		2
B	A	5
C	A	3
D	B	4
E	C	3
F	C	7
G	D,E	2
H	F	3

• I have laid down the data considering the constraints of immediate predecessors such that we can get the project timeline.
• What is the expected project duration in weeks? = 15 weeks

Duration
Steps	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
Activities		A			C		B				D		G
					C			E
					C							F			H

• I have use MS excel's Gantt chart template and keyed in the values to create Gantt chart below considering
• Immediate predecssors and their duration as shown in table above
• assumed Planned time = Actual time

A B D E F G H I J K L M N O P Q R S T U V W X Y Z AA AB AC AD AE AF AG AH AI AJ AK AL AMAN AO AP AQ AR AS Project Planner 1 2 Select a period to highlight at right. A legend describing the charting follows. Period Highlight: 1 Plan Duration Actual Start % Complete Actual (beyond plan % Complete (beyond pli ACTIVITY PLAN START PLAN DURATION ACTUAL START ACTUAL DURATION PERCENT COMPLETE 3 4 PERIODS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 100% 5 A 1 2 1 2 100% 6 В 3 5 3 5 100% 7 C 3 3 3 3 100% 8 D 8 4 8 4. 100% 9 E 6 3 6 3 100% 10 F 6 7 6 7 100% 11 G 12 2 12 2 12 100% 13 H 3 13 3

Part b)

Explain the following TWO (2) terms in lean operations:

a. Kanban –

Kanban is a visual system for work management as it moves through system processes i.e.

• A concept related to Just in time.
• A Kanban card indicating standard quantity (of production).
• Derived from two-bin inventory system
• Maintain discipline of pull production
• Authorize production and movement of goods
• There are 6 types of Kanban: production , Withdrawal , Kanban square , signal , material & supplier.

b. Toyota production system (TPS)

• This production system methodology was designed by Toyota motors , a Japanese company , which helps to increase the production efficiency by organizing the supply chain , logistics , minimize wastes and improve manufacturing processes.
• This system was developed from 1948 until 1975 by Toyoda , Shingo & Ohno and helped Toyota be a market leader in automobile industry by removing many production inefficiencies.
• TPS helps to work in the direction to remove obstacles i.e. muri , mura and muda.
• There are 2 pillars of TPS as Just in time principle (Make what is needed , when it is needed and how much it is needed) and Jidoka (automation with a human touch).

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