Property Handling Process

Transcription

1 Property Handling Process Insert Picture of Defect or Process Project Start: 10 / 2009 Project Revision: 8 / 2010 Project Champion: Diannia Jackson Black/Green Belt: Jimmy Toler 1

2 Define Phase 1. Select Output Characteristics The Property Handling Process was identified in order to improve the long term storage, inventory, and tracking of property items submitted to the Tyler Police Department. 2

3 Define Phase 1. Select Output Characteristics Property Process Breakdown 1. Initial Documentation and Handling of Property 2. Storage and Tracking of Property 3. Disposition of Property 3

4 Define Phase 1. Select Output Characteristics Initial Documentation and Handling of Property: Includes: Identification Initial Handling and Collection Transportation Documentation Packaging Storage 4

5 Define Phase 1. Select Output Characteristics Types of Data 1. Number of Cases Processed 2. Number of Items Processed 3. Number of Defects a. Type of Defect 5

6 Define Phase 1. Select Output Characteristics Week Cases 349 Property Items 51 Defects 48 Documentation Defects 3 Packaging Defects 14.6% Defect Rate 6

7 Define Phase 1. Select Output Characteristics Week 2 96 Cases 313 Property Items 72 Defects 71 Documentation Defects 1 Packaging Defects 22.7% Defect Rate 7

8 Define Phase 1. Select Output Characteristics 5 10 Summary for Percent Defective Per Day % Confidence Intervals A nderson-darling Normality Test A -Squared 0.17 P-V alue Mean StDev V ariance Skew ness Kurtosis N 7 Minimum st Q uartile Median rd Q uartile Maximum % C onfidence Interv al for Mean % C onfidence Interv al for Median % C onfidence Interv al for StDev Average defects per day = Standard Deviation = Mean Median

9 Define Phase 1. Select Output Characteristics Percent Defective Time Series Plot of Percent Defective Time Series Chart reflects the percent (%) of defects per day /2/ /9/ /10/ /11/2009 Date 11/12/ /16/ /17/2009 9

10 Define Phase 2. Define Performance Standards The problem statement identifies the purpose of the project. The project objective identifies a goal of a 75% reduction in defects.

11 Measure Phase 4. Establish Baseline Process Capability Initial Capability Analysis Initial Process represented a Sigma Level of.92 11

12 Measure Phase 6. Identify Variation Sources Take Possession of Property Package to Protect Item Property Log Book Identify Property CSI Processing Y/N Transport Property List Items on Property Page (s) Property Handling Secure Item for Transportation Narcotics Log Book Property Locker D.P.S. Lab Submission Form Narcotics Locker Property Lot Store Property Package Item: Paper Plastic Envelope C.D. Holder Paper Tag Metal Tag Box (Yes) CSI Request Sheet CSI Processing Y/N (No) (Dry) Dry / Wet Item Wet Special Handling Procedures for Wet Items Drying Shed Mailbox CSI 12

13 Measure Phase 6. Identify Variation Sources Measurement Packaging Personnel Paper Tags I.D. Data Item Description Signature Supplies Paper Plastic Metal Boxes Area Officer Initials and Date Shift Supervisor Date Case Number Staplers Heat Sealer Training Refrigerator Small / Medium / Large Training Common Sense Machine Size of Item Tape Digital Scales Packaging Evidence DPS Lab Submission Sheet CSI Submission Form Improper Storage Cause Facility Room Size Log Book Drug Log Sheet Inaccurate Data 2 Copies left in Property Property Sheet Type of Item CSI Locker Large Property Lot Property Log Sheet Incomplete data Size of Item Explosive Mailbox Drying Shed Drug Locker Location Documentation Storage 13

14 Measure Phase 6. Identify Variation Sources Preparing FMEA 14

15 Analyze Phase 7. Screen Potential Causes Defect Percentage Percent Classification of Defects Pareto Chart of Defect Type The highest rate of defect is associated with documentation errors (88%). Defect Type 20 0 Incorrect Submittal of Paperwork Incomplete Info on Property Sheet Impoper Pack aging Inco rrect Information Pro perty Sheet O ther Defect Percentage Percent Cum %

16 Improve Phase 9. Implement Improvements Sort, Stabilize, Shine, Standardize, Sustain 16

17 Improve Phase 9. Implement Improvements Sort 17

18 Improve Phase 9. Implement Improvements Stabilize 18

19 Improve Phase 9. Implement Improvements Shine After Before 19

20 Improve Phase 9. Implement Improvements Standardize 20

21 Improve Phase 9. Implement Improvements Property Log Book 21

22 Improve Phase 9. Implement Improvements Packaging Materials / Supplies / Equipment 22

23 Improve Phase 9. Implement Improvements Property Page Submission 23

24 Improve Phase 9. Implement Improvements Property Corrections List 24

25 Percent Defective Improve Phase 11. Determine Final Process Capability Overall Trend (Percent Defective / Day) Trend Analysis Plot for Percent Defective Linear Trend Model Yt = *t Variable Actual Fits Accuracy Measures MAPE MAD MSD /11/ /17/ /25/ /3/ /9/ /15/ /21/ /29/2009 1/5/2010 1/11/2010 Date 25

26 Improve Phase 11. Determine Final Process Capability Proportion Percent Defect for Each Phase of Project Baseline Project Improvement 1 1 P Chart of Defect Count by C6 1 The green line represents the average daily defect rate in each phase of the project /2/ /17/ /2/ /11/ /22/2009 1/5/2010 Tests performed with unequal sample sizes 1 1 Date 1/14/2010 1/26/2010 2/4/2010 2/16/ UCL=0.211 _ P=0.053 LCL=0 The average daily defect rate has decreased to 5.3% over time. This represents a 71.9% improvement. 26

27 Improve Phase 11. Determine Final Process Capability Current Sigma Level of 1.66 % Defective PPM (ST) CPK Sigma Initial 18% 179, Goal 4.8% 44, Improvement 4.8% 48,

28 Control Phase 12. Implement Process Controls Control Plan 28

29 Control Phase 12. Implement Process Controls Control Plan 29

30 Control Phase 12. Implement Controls Property Manual Updates 30

31 Control Phase 12. Implement Process Controls Sustain 31

32 Control Phase 12. Implement Process Controls Cost The potential savings based on a 75% improvement equal $10, In addition, a 75% reduction in defects would provide time savings to officers and property technicians. 32

33 Control Phase 1. Implement Process Controls Percent Defect for Each Phase of Project The average daily defect rate has decreased to 3.6% over time. This represents a 80.9% improvement. 33

34 Control Phase 12. Implement Process Controls Current LT Sigma Level of

35 Control Phase 12. Implement Process Controls Property Data Costs and Savings Initial Cost $ 14,539 Hard Time Savings $ 1,253 Soft Savings $ 14,876 Total Savings $ 16,129 Time Saved (Hrs) 84 Data Soft Dollar Calculations Hard Savings Time Savings Month Number of Property Items Number of Defects Percent Defect Baseline Defect Rate Estimated Defects Based on Baseline Evidence Cost for all Categories Cost Calculated Costs per Actual Defect Soft Savings Old labor Cost Cost of Time Cost Hard Savings for Time Saved Average Cycle Time to Repair (Hrs) Estimated Time To Repair Estimated Defects (Hrs) Estimated Time to Repair for Actual Defects (Hrs) Time Saved (Hrs) Jan % 19.38% 98 $ 6.44 $ 630 $ 180 $ 450 $ $ 53 $ 15 $ Feb % 19.38% 143 $ 6.44 $ 922 $ 225 $ 697 $ $ 78 $ 19 $ Mar % 19.38% 212 $ 6.44 $ 1,367 $ 142 $ 1,225 $ $ 115 $ 12 $ Apr % 19.38% 126 $ 6.44 $ 809 $ 129 $ 680 $ $ 68 $ 11 $ May % 19.38% 94 $ 6.44 $ 608 $ 84 $ 524 $ $ 51 $ 7 $ Jun % 19.38% 167 $ 6.44 $ 1,076 $ 167 $ 908 $ $ 91 $ 14 $ Jul % 19.38% 187 $ 6.44 $ 1,204 $ 135 $ 1,069 $ $ 101 $ 11 $ Aug % 19.38% 160 $ 6.44 $ 1,028 $ 90 $ 938 $ $ 87 $ 8 $ Sep % 19.38% 114 $ 6.44 $ 735 $ 32 $ 703 $ $ 62 $ 3 $ Oct % 19.38% 192 $ 6.44 $ 1,234 $ 58 $ 1,176 $ $ 104 $ 5 $ Nov % 19.38% 172 $ 6.44 $ 1,111 $ 45 $ 1,066 $ $ 94 $ 4 $ Dec % 19.38% 157 $ 6.44 $ 1,011 $ 77 $ 934 $ $ 85 $ 7 $ Jan % 19.38% 143 $ 6.44 $ 922 $ 58 $ 864 $ $ 78 $ 5 $ Feb % 19.38% 144 $ 6.44 $ 925 $ 90 $ 835 $ $ 78 $ 8 $ Mar % 19.38% 271 $ 6.44 $ 1,747 $ 52 $ 1,696 $ $ 147 $ 4 $ Apr % 19.38% 178 $ 6.44 $ 1,143 $ 32 $ 1,111 $ $ 96 $ 3 $