HINDUSTAN ZINC

Jumbo Utilization and Productivity

Submitted By:

SHALENDERB. Tech Part-II,IIT (BHU), Varanasi.

Project Guide:

Mr. Nathu Singh Choudhary,Associate General Manager- MiningRampura Agucha Underground Mine.

Objective of the Project

Identifying parameters affecting utilization and productivity of Jumbo

Identifying major causes of operational delays

Proposing suggestions to increase utilization and productivity

Methodology

Collecting data and calculating % Availability, % Utilization and Idle Time

Identifying major factors causing Jumbo to remain Idle Identifying factors affecting productivity of Jumbo Proposing ways to minimize Idle Time and Increase

Utilization Proposing ways to improve productivity

BD + Maintenance16%

Available Time84%

Total Time Pie Chart

BD + Maintenance Available Time

23%

12%

65%

Available Time Pie Chart

Operation Time Engine + Setup + Removal TimeIdle Time

Analysis

53%

30%

2%

13%

3%

Idle Time Pie Chart

Operator Unavailable Face UnavailableGEB Problem Water Hose & Supply ProblemDrill Consumables Unavailable

76%

20%

4%

Operator Unavailable

Shift Change Losses In-Shift Losses Excessive Heat

Time Analysis of a ShiftTotal Time Available Time BD + Daily Maintenance

Time

480 403.2 76.8

Available Time Operation Time Idle Time Engine + Setup + Removal Time

403.2 92.74 262.08 48.38

Idle Time Operator Unavailable

Face Unavailable

Gate End Box Problem

Water Hose & Supply Problem

Drill Consumables Unavailable

262.08 136.28 78.62 5.24 34.08 7.86

TIME CONSUMED IN VARIOUS OPERATIONS

*Time shown in above table does not include Travelling + Setup + Removal Time.Time consumed in various operations in South Section (as per Shubham Bansal’s report); in crosscut:Loose Scaling= 70 min, Rock Bolt Drilling= 72.5 min, Face Drilling= 137.5 min.

Cluster active faces near each other (Average Engine Time=33.2 minutes per shift)

Increase number of available faces Ensure better communication between operators of various machines

and mining mates Adequate number of jumbos, neither more nor less than required

(ensure one jumbo for two active faces)

SUGGESTIONS TO INCREASE UTILIZATION

Improve the quality of daily maintenance `to improve machine health

Improve operator skills Improve ventilation at the working face

SUGGESTIONS TO INCREASE PRODUCTIVITY

THANK YOU!