2.3 case study 1 Gulf oil spill
Activity 5.1 Preliminary Hazard List Preliminary Hazard List (PHL)
Equipment-Related Hazards
Project/System: _______________________________________ date: ________________
Prepared by: ____________________________________________________
Hazardous Event Hazard Category Causes Consequences Recommendations
Condition or state that has the potential to cause an injury or property damage
identify the hazard based on the energy type, such as electrical, mechanical, chemical, etc.
identify the potential causes for each hazard
the failure effect on people, property, business, production, environment, etc.
Suggested actions to be taken to reduce haz- ards, such as conduct a job safety analysis (jSa), provide required PPe, training, etc.
Preliminary Hazard List (PHL) Operator-Related Hazards
Project/System: _______________________________________ date: ________________
Prepared by: ____________________________________________________
Hazardous Event Hazard Category Causes Consequences Recommendations
Condition or state that has the potential to cause an injury or property damage
identify the hazard based on the energy type, such as electrical, mechanical, chemical, etc.
identify the potential causes for each hazard
the failure effect on people, property, business, production, environment, etc.
Suggested actions to be taken to reduce haz- ards, such as conduct a job safety analysis (jSa), provide required PPe, training, etc.
Activity 5.2 What if/Checklist analysis Worksheet
Preliminary Hazard List (PHL) Project/System: _______________________________________ date: ________________
Prepared by: ____________________________________________________
Equipment-Related Hazards
What If Statement Hazard Category Cause Consequence Recommendations
Formulate “what if” questions about possible failure scenarios
identify the hazard based on the energy type, such as electrical, mechanical, chemical, etc.
identify the potential causes for each hazard
the failure effect on people, property, business, production, environment, etc.
Suggested actions to be taken to improve the performance and reduce the hazards, such as conduct a job safety analysis (jSa), provide required PPe, training, etc.
Operator-Related Hazards
Formulate “what if” questions about possible failure scenarios
identify the hazard based on the energy type, such as electrical, mechanical, chemical, etc.
identify the potential causes for each hazard
the failure effect on people, property, business, production, environment, etc.
Suggested actions to be taken to improve the performance and reduce the hazards, such as conduct a job safety analysis (jSa), provide required PPe, training, etc.
Activity 5.3 FMeCa Worksheet Potential Failure Mode, effects, and Criticality analysis (FMeCa)
System Name: air Nibbler
date:
Prepared By:
Start date:
Severity ranking table 5 Catastrophic: a failure results in
death and/or major losses and cost 4 Critical: a failure results in a
serious injury or property damage 3 Major: a failure results in minor
injury to personnel and/or property damage
2 Minor: a failure results in minor system damage but does not cause injury
1 Negligible: Near miss without injury, property damage, or delay
Occurance rating table 5 a high probability of occurrence 4 a moderate probability of
occurrence 3 an occasional probability of
occurrence 2 a remote probability of occurrence 1 Minor: a failure results in minor
system failure but does not cause injury to property damage
detection ranking table 1 Very high probability that the
failure will be detected 2 High probability that the failure
will be detected 3 Moderate probability that the
failure will be detected 4 Low probability that the failure
will be detected 5 Very low probability that the
failure will be detected
Part Name & Number
Part Function
Failure Mode
Consequences S e V
Potential Causes O C C
d e t
r P N
recommended actions
responsible individual/ Party & due
date
S e V
O C C
d e t
r P Naction
results
1-
2-
3-
Activity 5.4 etBa Worksheet Energy Source
Hazard Category Cause Target Barrier
Initial Risk Index Recommendations Final Risk Index
the
subsystem
responsible
for the
energy
identify
the hazard
based on
the energy
type,
such as
electrical,
mechanical,
chemical,
etc.
identify
the
potential
causes
for each
hazard
Such as:
operator,
property, the
environment,
etc.
Known as the
current controls
in place.
Examples: Physical: PPe, guard,
insulation, etc.
Administrative: training, SOPs,
procedures, etc.
Multiply
the
frequency
by severity
Suggested actions
to be taken to
improve the
performance and
reduce the hazards,
such as conduct a
job safety analysis
(jSa), provide
required PPe, etc.
Multiply the
frequency by
severity; expected
to be lower than
the initial one
based on the
implemented
recommendations
Activity 5.5 HaZOP Worksheet
Node/ Subsystem
Parameter Guide Word Deviation Possible Causes
Consequences Safeguards Recommended
Actions
Actions Assigned To/Date
insert node/ subsystem
Provide a parameter, such as temperature, pressure, volume, time, etc.
There could be more than one parameter for each subsystem.
Guide word, such as high, low, more, less, no, etc.
Make sure to investigate all possible guide words for each parameter.
Use a guide word and a parameter, such as more pressure
Provide possible causes
Provide the effects here, such as injury, property damage, downtime, etc.
Current controls
Provide solutions to eliminate or reduce the risk
Who is responsible for completing this task?