2012 IEHF North West branch - Task risk management
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Transcript of 2012 IEHF North West branch - Task risk management
Tel: (+44) 01492 879813 Mob: (+44) 07984 [email protected]
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Task Risk Management
A Process for Managing Risks with Task Analysis at its Heart
Andy Brazier
Task risk management
A four stage process1. Develop a task list2. Prioritise task analysis according to criticality3. Analyse the most critical tasks4. Use the findings
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Questions for you this evening
Is ‘Task Risk Management’ the a good name?Alternative = Critical Task Analysis
Do you agree with the four stages?Would you add or remove any?
Why do my clients struggle to ‘get’ task analysis? (before asking me to assist!!!)
HSE tell them to do itSome have had bad experience with other consultants – may be because the client asks the wrong questions or does not engage in the process.
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1. Identify tasksPossible approaches
Skip the step – people often want to dive straight into task analysisExisting procedures – assume they cover all tasksStructured brainstorming – process drawing
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FiltersDuty/standby
PumpsDuty/standby
DP
Alarms
LoLoLo
Hi
Trip
Storage tank
Deliverytanker
Group exercise
1. Identify tasksThis step is very simple – but encourages a systematic approachUses for task lists
‘Gap analysis’ of procedures, training/competence systems;‘On the job’ training programmes;Workload estimates;Managing organisational changes.
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2. Prioritise tasks for analysisPossible approaches
‘Gut feel,’ experience or ‘normal’ risk assessmentHAZOP, Process Hazard Review (PHR) etc.Scoring system (see OTO 092 1999 – HSE)
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Hazardousness of systemIgnition/energy sourcesChanging configurationError vulnerabilityImpact on safety devicesOverall criticality
Low Medium High
1 2 3 1 2 3 1 2 3 1 2 3 1 2 30-3 4-8 9-15
2. Prioritise tasks for analysisBenefits of scoring tasks at stage 2
ObjectiveDemonstration of why tasks were selected for analysis – safety reports/casesHighlight ‘anomalies’ without carrying out a detailed task analysis
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Microsoft Excel Worksheet
3. Analyse the most critical tasksTask analysis is tried and tested – but negative perceptions
Time and effortOnly doing it to keep the regulator happy
Discoveries from every analysis - if done ‘properly’
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3. Analyse the most critical tasksGroup exercise – use a data projector
People share experiences and concernsAccept procedure may not reflect realityBuy in to new methodsAn excellent training exercise for people involved
Human error analysisLook at the task with ‘new eyes’Identify where issues have been ‘glossed over’
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4. Use the findings‘Engineer out’ error potential
New projects – human factors integration planProcess design modifications to eliminate task or errorReview and improve performance influencing factors
ProceduresHigh criticality – print, follow and sign every timeMedium criticality – reference proceduresLow criticality – generic procedures and guidance
How do you manage the risks the risks of critical tasks that are performed frequently?
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4. Use the findings
Competence systemHow to perform tasksUnderstanding the risks
Continuous review – proactive and reactiveConsider all stages when examining failures
1. Why is a task missing from the list?2. Why was criticality not assessed correctly?3. Was the task analysis correct?4. Were the findings used?
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Identify tasks
Rank criticality
Analyse the most critical
1. Task analysis
2. Human error
3. PIF
Audit/reviewYes
Risk ALARP?
No
Use the output 1. Design 2. Procedures 3. Competence 4. Incident analysis
Introducing people to task analysis
Recent experience with a group of new graduates in the power industryUse of a ‘flow loop simulator.’
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Flow loop simulator
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Pump A
Pump B
Flow Control
Tank (1m3)
Reservoir Tank (1.5 m3)
PI
PI
TI
TT
FL1/DA/003
FL1/DA/008
FL1/DA/011
FL1/DA/016
FL1/DA/018
FL1/DA/001 FL1/DA/055A
FL1/DA/031A
FL1/DA/055B
FL1/DA/031B
FL1/DA/042
FL1/DA/013
NRV
FL1/DA/029A FL1/DA/026AFL1/DA/027A
NRV
FL1/DA/029B FL1/DA/026BFL1/DA/027B
PRV
FL1/DA/R038
PRV
FL1/DA/R039
FL1/DA/024
Return to reservoir tank
FL1/DA/TW01Liquid Supply
M
Manual valve
Motor operated valve
Non-return valve
Relief valve
PI Pressure indicator
PI
FL1/DA/054
Simplified flow
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Pump A
Pump B
Flow Control
Tank (1m3)
Reservoir Tank (1.5 m3)
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Group 1 – Start circulation
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Pump A
Reservoir Tank (1.5 m3)
Group 2 – Change circulation
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Pump B
Flow Control
Tank (1m3)
Reservoir Tank (1.5 m3)
Group 3 – Fill flow control tank to maximum level then shutdown
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Pump B
Flow Control
Tank (1m3)
Reservoir Tank (1.5 m3)
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The challenge for the groups
Develop a method for performing a defined task (1 hour)Consider the potential for human error (30 minutes)Determine how you will communicate your task method to operators and prepare (1 hour)Operators carry out task (1 hour).
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Questions again
Is ‘Task Risk Management’ a good name?Do you agree with the four stages?How can we help industry to ‘get it?’Any more we can say about using the output?
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