TIME STUDY

1. Time Study Presented by:- Chhavi Narayan Khushboo singh Abhishek sahoo Dhondup

2. CONTENTS Introduction Objectives of Time study Advantages Time study by stop watch Diff between Time and Motion study Type of Elements Methods Sample calculation Computation of NT & ST Applications C onclusion

3. INTRODUCTION WORK STUDY:- Motion study Time study:- A qualified, well trained operator Normal pace Doing a specific task

4. OBJECTIVES OF TIME STUDY To increase productivity To set labour standard for satisfactory performance. To determine basic times/normal times. To determine the number of machines an operator can handle. To determine standards costs.

5. A dvantages To develop suitable working conditions To improve utilization of resources To reduce human effort by proper design of processes

6. TIME STUDY MOTION STUDY N otes the time involved in carrying out each element of operation. A ims at fixing the standard time for carrying out a job. I s not suitable for workers where quality is prime consideration S tudy of motions on an operation T o reduce wastage of time S uitable for all types of jobs. Diff between time & motion study

7. Types of elements involved in a job Repetitive element:- Occurs in every work cycle of the job. Occasional element:- Occurs at intervals. Constant element :- B asic or normal time remains constant. Variable element:- B asic or normal time varies. Manual element:- Performed manually. Governing element :- Occupies a longer time than any other element.

8. Methods 1.Predetermined time standard system 2.Stop watch reading a ) Continuous b ) Snap-back 3.Work sampling

9. Sample calculation E=2   P=proportion of phoning of activity E=error n=sample size Que . A preliminary study indicates that the proportion of idle time of a machine is 30% ; rest of the time it is working . To get a good estimate of the idle time with a precision of % , then what should be the sample size?   n = =8400  

10. Computation of NT & ST Work element a b c d* Obs. rating 0.56min 0.25min 0.50min 1.10min Performance rating 100% 80% 110% 100% * Irregular element performed every 5 cycles PFD allowance=15% Normal time=0.56(1.0)+0.25(0.80)+0.50(1.10)+1.10(1.0)/5=1.53min Standard time=1.53(1+0.15)=1.76

11. Applications In decision making Provides accuracy Organisation and method

12. Conclusion