Faculty of Engineering, the Built Environment and Information Technology
Department of Engineering: Industrial
TEST 2
10 May 2022
MODULE: Engineering Systems 2 - SUBJECT CODE: ISEV201
INSTRUCTIONS:
All Questions are compulsory
Writing – if I can’t read it, I can’t mark it!
Work to 2 decimal places for all calculations
Show your calculations
Only PDF and Moodle submissions will be marked
QUESTION 1 [16]
A local engineering shop is responsible for producing small metal items (e.g. washers, inserts
and spacers) for the hardware industry to supply with nuts and bolts. The following time study
details were provided for one of the stamping presses.
The following notes were made on the time study:
Fifty (50) washers can be produced from one (1) sheet metal strip
The company also indicated that the policy allowance is 5% of basic time.
Complete the following:
1.1 The time study sheet based on the data provided (Use Addendum A) (8)
1.2 If the machine is run for a 9-hour shift each day, determine the output of completed
washers for a week, if the company works 5 days per week. (1)
The production manager for the engineering shop has approached you to revise the time study.
The item produced is currently in high demand and to speed up the process in line with
customer demand, the production manager has requested a tool change. The change will allow
for the item to be produced on a tool that cuts two parts per cutting stroke instead of the one
part per cutting stroke (as above). Assume that the process, material and the process times will
remain the same (as above) for all elements and all allowances will remain the same (as
above). The tool orientation allows for sixty (60) washers to be produced from one (1) sheet
metal strip as compared the fifty pieces from before.
1.3 Calculate the new standard time for the process (Use Addendum B) (6)
1.4 If the machine is run for a 9-hour shift each day, determine the output of completed
washers for a week, if the company works 5 days per week. (1)
[14]
QUESTION 2
Using Addendum “E” compile a Multiple Activity Chart for the following process:
You have collected the information in the “Stores Department” unloading of metal strips.
The operation consists of the following elements:
Elements Manning used Time (minutes)
Unloading from truck Two stores operators 3.5
Counting stock Stores supervisor 0.5
Transport to stores Two stores operators 1.5
Pack stock Forklift driver 2.0
Recheck stock Stores supervisor 1.5
Categorise stock Two stores operators 3.5
You have made the following notes whilst collecting the information:
The operators always have to look for the stores supervisor which takes on average 1.5
minutes.
The operators must be in attendance whilst the forklift drive packs the stock
2.1 Construct a multiple activity chart on the information collected. (7)
2.2 Calculate all the percentage utilizations (4)
2.3 Suggest improvements (3)
[20]
QUESTION 3
After completing the required time study for the engineering company (Question 1) you have
noted that the company does not analyse any of its work processes surrounding the machine
support activities, you have collected the following data on the process on the shop floor where
a support operator assists the machine operator in question 1.
Note: The support operator (serviceman) services seven machines in the department and you
have calculated that one metre is equivalent to 1.2 seconds.
Here is the information you have collected on the task:
Checks stock availability of all machines on start-up (14 minutes), waits for supervisor to get the
daily production requirements (6 minutes), goes to stores (350 metres), informs storeman of
daily requirements (3 minutes), returns to production department, looks for scrap trolley (8
minutes), collects all scrap material from machines (8 minutes), takes scrap material to waste
area (550 metres), returns scrap trolley to designated area (450 metres), get material trolley
from designated area (60 metres) return to stores to collect 1st order (350 metres), waits for
order (5 minutes), loads order onto trolley (15 minutes), and returns, unload 20 metal strips and
placed at each machine (20 minutes per machine), returns material trolley (130 metres), returns
to machines (200 metres), collect scrap at each machine and put in allocated scrap area for
each machine (5 minutes per machine) gets scrap trolley to designated area (30 metres),
collects all scrap material from machines (8 minutes), takes scrap material to waste area (550
metres), return scrap trolley to designated area (450 metres), gets material trolley from
designated area (60 metres) return to stores to collect 2nd order (350 metres), loads order onto
trolley (5 minutes), and returns, unload 20 metal strips and placed at each machine (20 minutes
per machine), returns material trolley (130 metres).
3.1 Use “Addendum C” and complete the chart on the information collected. (10)
3.2 Suggest improvements and calculate the savings (4)
3.3 The production supervisor is constantly changing the layout on the floor, explain
to the supervisor when and why we should re-examine the space we are utilising. (6)
Total [50]
SURNAME:___________________ STUDENT NO:___________________
Addendum A
SURNAME:___________________ STUDENT NO:___________________
Addendum B
Input your Total time and Average time from Addendum A into the template below and recalculate the
new standard time for a 2-piece tool.
SINGLE COLUMN PROCESS SHEET
STEP DETAILS OF OPERATION OPE INS DE TRA STO DISTANCE TIME REMARKS
NO L
SUMMARY TOTAL NO OF INSPECTI DELAYS TRANSPORT STO
STEPS OPEATIO ON RA
N GES
NO NO NO NO DISTANCE
TIME TIME TIME
OLD METHOD
Addendum C
Student Name: Student No.
Addendum "D"
MULTIPLE ACTIVITY CHART
