Mark Bartlett Fatigue

7/27/2019 Mark Bartlett Fatigue

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www.fcx.com

Connecting the World

Testing and Implementation of aFatigue Monitor System for Haul

Truck Operators

Mark W Bartlett, Ph.D.


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Program Objectives

Identify and implement a tool for haul truck drivers

that:- Reduces or eliminates fatigue-related injuries and

fatalities

- Reduces accidents and equipment damage Following evaluation period, apply tool where most

effective


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Why do We Need a Fatigue MonitoringTool?

Everyone has probably fallen asleep while driving

Driver fatigue is a major source of property damageand serious haul truck serious incidents

To protect ourselves from the other tired driver

To know when to ask for relief

To know when we are seriously distracted from driving

To measure improvements in sleep incidents based on

shift changes and intervention

To help prevent incidents like the following:


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Probable Fatigue Accidents


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Known Fatigue Accidents


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Large Equipment Statistics

High Altitude Mine 2006-2009

128

17

131

22

109

20

96

18

0

15

30

45

60

75

90

105

120

135

2006 2007 2008 2009

HE Acc. vs Sleepy Acc.

Total Eqp Acc. Total Sleeping Acc.


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Accident Times

0

2

4

6

8

10

12

14

16

18

23

-24

24

-1

1-

2

2-

3

3-

4

4-

5

5-

6

6-

7

7-

8

8-

9

9-

10

10

-11

11

-12

12

-13

13

-14

14

-15

15

-16

16

-17

17

-18

18

-19

19

-2

0

20

-21

21

-2

2

22

-23

Sleepy Acc. - TimeJan 2006 - 27 Nov 2009

0

2

4

6

8

10

12

14

16

18

2

3-

24

24

-1

1-

2

2-

3

3-

4

4-

5

5-

6

6-

7

7-

8

8-

9

9-

10

1

0-

11

1

1-

12

1

2-

13

1

3-

14

1

4-

15

1

5-

16

1

6-

17

1

7-

18

1

8-

19

1

9-

20

2

0-

21

2

1-

22

2

2-

23

Sleepy Acc. - Time

Jan 2006 - 27 Nov 2009

Night Shift Day Shift Swing Shift


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The DSS Technology


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The Technology

Cat 793 Installation


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The Technology

1. Microsleeps > 4 mph / 2.0s

2. Distraction > 14 mph / 6.0s


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Cab Integration

DSSAudio Warning

Sensor

Microsleep

Detection

Drowsy Eyes

Driver

Seat Vibration


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Supervisor Integration

DSS

Microsleep

DriverDispatcher/Supervisor

Intervention

Wireless Communications

MicrosleepEvent

Display

Data

Server


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The DSS Technology

Safford Data


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Fatigue Events by Hour of Day n

HourofDayHour1=1:00AM

1:59:59AM


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Speed(mph)

Fatigue Events Frequency by Speed

n = 3,286


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n=3,286

Longitude,East

GPS Location of Fatigue Events


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Distraction Events(11/23/09 - 4/11/10)

0

100

200

300

400

500

600

700

800

900

1000

Coun

t

Week

EventCountbyWeekn=9,607

AlarmswereturnedofffromtheeveningofJanuary2nd

throughFeb26th.

0

1

2

3

4

5

6

7

8

Seconds

Date

AverageDistractionDurationOverTimen=9,607


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People

Technology Process

Change Management Plan

Technology Test to make sure it works

False positives/eye glass

interference Work with IS to get real-time info Trial with supportive mine site

Process Design real-time intervention plan Assign roles & responsibilities

Anticipate problems & responses

People Complete stakeholder analysis

Formulate communications plan

Site management commitment

Tell operators everything

Do what we say we are going to do

Success


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People Communicated

Message

We want everyone to go home to their family whole

Driver fatigue is a major source of property damageand serious haul truck serious incidents

We run 12-hour shifts 24/7, but what are the

best/safest shift hours?- Need to measure to improve

Employees will not be fired for falling asleep while

driving Operators will be disciplined for tampering with device

Operators may be disciplined for PPE violations


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The Process

Intervention Strategy Ask operator to call dispatch if fatigue alarm sounds First two events handled by dispatcher and operator Pit supervisor involved at 3rd confirmed micro-sleep

- Park up truck/conversation with driver- Put driver back on if alert; provide nap if needed

Any further confirmed events

- Assign other work if necessary

Tampering with device Dispatcher call to clear view Progressive discipline process

PPE/Policy violations Progressive discipline process

DSS

Micro-sleep

Dispatcher/Supervisor

Intervention

Wireless

Communications

Micro-sleep

Event

Display


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Legal, Safety & HR Concerns

Questions?

Will MSHA approve and will they use our data against us? Expectations of privacy?

Consistency in application of intervention process bysupervisors?

Answers

Proactive measure to improve employee safety

Experimental at this time

Employees responsibility to remain alert and exercisesufficient motor skills, coordination, and mental attention todo the job safely

Strategy and procedures will be uniformly applied at all

sites


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Fatigue and Distraction Events(By Week, Normalized)

BothAlarmsOn

DistractionAlarmsOff

BothAlarms

BothAlarmsOn + FMPImplementedDistractionThresholdRaised

n = 3,286


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Micro-Sleeps By Shift Rotation


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Fatigue Monitor Results


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Challenges Tracking

Drivers cannot be tracked all the time- Tracking usually 60-80%

Why not?- PPE interference

- Dust masks & certain eye wear interfere

- Short/Tall drivers

- Driver movement in/out of FOV

- High contrast AM/PM light

- Facial hair

- Cell phones/Personal entertainment devices- Tampering


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Conclusions

The DSS system works most of the time for most operators Provides virtual driving buddy for the operator Can provide site supervision near real-time notice of potential

fatigued operators Highly effective if used with supervisor intervention procedure The communications plan about the technology and how it will be

used is critical Complete management support and ownership of the process

(from the mine manager to front-line supervisor) Your own test data is helpful (including the video clips) in

showing other drivers the issue Consequences are clearly defined; do what you say you are going

to do Listen to complaints and fix issues/problems early Site champions required


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Conclusions

However

Not a Fatigue Management System, just one component GPS dependent; no notification or alarm if GPS disabled or unavailable

Facial hair, some safety glasses, and tampering will limit % of tracking


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Questions?

Documents

Mark Bartlett Fatigue