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OPNAV INSTRUCTION 3500.39B
ORM
ORM is a method to
identify hazards, assess risks and implement controls to reduce the risk associated with any operation.
Any real or potential that can cause personal injury or death, property damage or mission degradation or damage to enviorment.
Hazard
An assessment of the expected consequence, defined by degree of injury or occupational illness that could occur from exposure to a hazard.
Hazard Severity
An assessment of the likelihood that, given exposure to a hazard, an accident will result
Mishap Probability
Chance of adverse outcome or bad consequences; such as injury, illness, or loss.
Risk
A structured process to identify and assess hazards.
Risk Assessment
Risk remaining after controls have been identified and selected.
Residual Risk
The process of dealing with risk associated within military operations, which includes risk assessment, risk decision making and implementation of effective risk controls.
Operational Risk Management (ORM)
An expression of the risk associated with a hazard that combines the hazard severity and mishap probability into a single arabic numeral.
Risk Assessment Code (RAC)
The five-step process is:
Identify Hazards (Step 1)
Assess Hazards (Step 2)
Make Risk Decisions (Step 3)
Implement Controls (Step 4)
Supervise (Step 5)
reduce risks by design, material selection or substitution when technically or economically feasible.
Engineering Controls
Controls that reduce risks through specific administrative actions
Administrative Controls
Serves as a barrier between personnel and a hazard. It should be used when other controls do not reduce the hazard to an acceptable level.
Personal Protective Equipment
An "on the run" mental or oral review of the situation using the five step process without recording the information on paper.
Time-Critical
Application of the complete five-step process as depicted in enclosure (3), will aid in planning an operation or evaluating procedures. It primarily uses experience and brainstorming to identify hazards and develop controls, and is therefore most effective when done in a group.
Deliberate
Deliberate process involving a very thorough risk assessment (first two of the five steps).
In-Depth
Principles of ORM
1. Accept Risk When Benefits Outweigh The Cost.
2. Accept No Unnecessary Risk.
3. Anticipate And Manage Risk By Planning.
4. Make Risk Decisions At The Right Level.
Risk Assessment Matrix. A matrix can be used to accomplish the what of the ORM process
second step
Category I -
The hazard may cause death, loss of facility/asset or result in grave damage to national interests.
Category II -
The hazard may cause severe injury, illness, property damage, damage to national or service interests or degradation to efficient use of assets.
Category III -
The hazard may cause minor injury, illness, property damage, damage to national, service or command interests or degradation to efficient use of assets
Category IV -
The hazard presents a minimal threat to personnel safety or health property, national, service or command interests or efficient use of assets
Sub-category A -
Likely to occur immediately or within a short period of time. Expected to occur frequently to an individual item or person or continuously to a fleet, inventory or group
Sub-category B -
Probably will occur in time. Expected to occur several times to an individual item or person or frequently to a fleet, inventory or group.
Sub-category C -
May occur in time. Can reasonably be expected to occur some time to an individual item or person or several times to a fleet, inventory or group.
Sub-category D -
Unlikely to occur.
RAC Definitions:
1 -
2 –
3 –
4 –
5 –
1 - Critical risk
2 – Serious risk
3 – Moderate risk
4 – Minor risk
5 – Negligible risk