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Process Simulation to Improve Custody Throughput
Alan Jackson
Hampshire Constabulary
Overview:Overview: Hampshire Constabulary have Hampshire Constabulary have employed employed
Business PBusiness Process rocess MManagement, together anagement, together wwith ith appropriate tools, as an essential part appropriate tools, as an essential part of their continuance improvement ethos of their continuance improvement ethos since 2002.since 2002.
iGrafx Process Improvement Solutions are iGrafx Process Improvement Solutions are an essentialan essential part of process management part of process management within the Constabularywithin the Constabulary
Custody Process Simulation TaskCustody Process Simulation Task
In support of plans to combine three older In support of plans to combine three older custody suites into one large purpose built custody suites into one large purpose built suite analysis support was required to suite analysis support was required to review the following areas prior to GO LIVE;review the following areas prior to GO LIVE;
Demonstrate impact of combined custody Demonstrate impact of combined custody volumes from 3 sites volumes from 3 sites
Create simulation model to demonstrate Create simulation model to demonstrate impact of these custody volumes on impact of these custody volumes on business processes and staffing levelsbusiness processes and staffing levels
Challenges:Challenges:
Mixture of electronic and manual data.Mixture of electronic and manual data. Manual data sometimes inaccurateManual data sometimes inaccurate Utilising the data set from 3 different sitesUtilising the data set from 3 different sites Ensuring correct mix of data set – no bail Ensuring correct mix of data set – no bail
returnsreturns Tight TimescalesTight Timescales
Simulation Model:Simulation Model:Custody Data for simulation model based on November 09.Custody Data for simulation model based on November 09.
Daily resource availability capped at 85% (allowing for Meal breaks, Daily resource availability capped at 85% (allowing for Meal breaks, Housekeeping etc.) Housekeeping etc.)
No provision made for Abstractions and Annual LeaveNo provision made for Abstractions and Annual Leave
2 Custody operations were simulated:-2 Custody operations were simulated:-
Simulation 1:- 3,1,3 RatioSimulation 1:- 3,1,3 Ratio - 3 Custody Sergeants (2 booking in, 1out)- 3 Custody Sergeants (2 booking in, 1out) - 1 CCTV / Security operator - 1 CCTV / Security operator - 3 CDO’s (1 dedicated floor walker, 2 booking in / out )- 3 CDO’s (1 dedicated floor walker, 2 booking in / out )
Simulation 2 :- 4,1,4 RatioSimulation 2 :- 4,1,4 Ratio 4 Sergeants (3 in 1 out)4 Sergeants (3 in 1 out)
- 1 CDO (CCTV etc)- 1 CDO (CCTV etc) - 4 CDO’s (dedicated floor walker and 3 alternating).- 4 CDO’s (dedicated floor walker and 3 alternating).
5 OCU New Build (Custody Process)
Holding cells
Custody Desk
Custody Detention
Officer
CPS
Custody reception and detention Custody Disposal
Solicitor
PND BailCharge
CPS advice
NFACaution
F/W
Promat
Cells initial holding 2
Prepare Disposal
Cells awaiting disposal
Cells following interview
PACE Re-Rights or Appropriate
Adult
Pre-charge advise
required?
Charge (28%)
Bail (33%)
PND (2%)
Caution F/W (8%)
No (88%)
Cells initial holding
No (95%)
No, Await disposal (90%)
NFA (16%)
Custody until Court av ailable
No solicitor
Investigation Process
No interview
Investigation Progression
Solicitor (33%)
No (67%)
Interview (81%)
No (19%)
Promat (2%)
Interview
CPS advice (10%)
Charge DeskEnd
End
Holding cells
Reasons for arrest
explained. Wand search
DNA, Livescanand escort to
cell
Yes (12%)
Medical (5%)
CUSTODY PROCEDURECustody Sgts (2)
Custody (15%) Release (85%)
Custody Sgt advice and progression
OIC
No (98%)
CDO 3Cell BlockSupervision
CDO 3Cell BlockSupervision
CDO 3Cell BlockSupervision
CDO 3Cell BlockSupervision
CDO 3Cell BlockSupervision
Average transaction (detention) time 3, 1, 3 = 10.44Average transaction (detention) time 4, 1, 4 = 10.04
Escort back to cell
Other Disposal
Other Disposal (13%)
Main arrest reasons;Minor Assaults 15%Thefts 13%Serious Assaults 10%Public Order 8%Burglary 7%Criminal Damage 6%Drugs 5%Drink Drive 4%
Smart Water check (by OIC)
CDO 4
CDO 2
CDO 1
CDO 2
CCTV & Security
Fast track for intoximeter
Detentionauthorised?
Yes (99%)
Release
No (1%)
Security and meal break
coverEnd
17/02/14
Process Description
Process name
Owner
Developer
Type and level
Completed date
Reviewed date
New Custody
5 OCU
Alan Jackson
Resource Simulation
05/07/10
Re-Rights or/and A/A
CDO 2
No (96%)
Drink Drive (4%)
1
6
7
8
9
5
4
3
2
10
15
16
17
18
14
13
12
11
19
24
25
26
27
23
22
21
20
28
33
34
35
36
32
31
30
29
Cell Block Supervision
Simulation Results:Simulation Results:Average Custody arrivals in November = 2 per hour Average Custody arrivals in November = 2 per hour
Simulation 1 :- Staffing Profile : 3,1,3 (3 Custody Sergeants, 1 CCTV, 3 CDO’s)Simulation 1 :- Staffing Profile : 3,1,3 (3 Custody Sergeants, 1 CCTV, 3 CDO’s) Results from simulation :-Results from simulation :- - 10 hrs 44 mins = Average time spent in custody - 10 hrs 44 mins = Average time spent in custody - Custody Desk unable to keep pace with intake and despatch (increasing - Custody Desk unable to keep pace with intake and despatch (increasing pressure on limited holding area)pressure on limited holding area) - Prolonged periods of time with excessive queues- Prolonged periods of time with excessive queues
Simulation 2:- Staffing Profile : 4,1,4 (4 Custody Sergeants, 1 CCTV, 4 CDO’s)Simulation 2:- Staffing Profile : 4,1,4 (4 Custody Sergeants, 1 CCTV, 4 CDO’s) Results from simulation :-Results from simulation :- - Average time spent in custody reduced to 10hrs 04 mins - Average time spent in custody reduced to 10hrs 04 mins - More consistent flow (from intake to despatch).- More consistent flow (from intake to despatch).
Comment: Custody Processes require reviewing / streamlining (in line with Comment: Custody Processes require reviewing / streamlining (in line with pace) with a view to reducing the time spent in detentionpace) with a view to reducing the time spent in detention