Glossary of Safety Management Terms

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Glossary of Safety Management Terms

The following terms are used throughout the safety management topics. For a full glossary of APM terms, see Glossary

Term

Definition

Change Set

A change set value in APM is usually a reference to a change request generated by a Management of Change (MOC) system. It provides a basic reference between the request and the change made in APM. You can assign change sets to safety provision versions and strategy development analyses.

HAZOP Checklist

A HAZOP checklist item represents an abnormal operating condition, such as high flow, low level, or incorrect valve positioning. Checklist items are listed in SIF and HAZOP analyses, where failure modes can be created to assess causes, effects, consequence severity, risk levels, and more.

Safety Instrumented Function Analysis

Safety instrumented function (SIF) analysis is one of the strategy development methodologies available in APM. The safety analysis team studies system-level and related assets to determine loss of containment scenarios, identify risk levels, and identify the safety provisions that protect against, or mitigate, loss of containment.

Safety Integrity Level

The design team assigns a safety integrity level (SIL) to each safety provision. This numeric value, usually on an ascending scale between 0 and 4, is a measure of the amount of risk inherent in the failure that the provision prevents or mitigates. The provision’s SIL is used in SIF analyses to calculate the impact of a possible failure.

Safety Override

A provision version’s safety override identifies the procedures that an operator or technician should follow when a safety device malfunctions in order to keep the facility operating safely while the device is being fixed or replaced.

When a safety device fails, an APM user (for example, an engineer, manager, or operator) creates an override incident in the system that records the details and recommendations.

Safety Provision

The safety design team identifies the safety processes, systems, and procedures that prevent or mitigate hazards. Safety provisions record the actions to be performed, the checklist of items, and instructions.

The provision version defines the safety override that identifies the procedures that an operator or technician should follow when a safety device malfunctions in order to keep the facility operating safely while the device is being fixed or replaced. It also defines a table of protected assets and the assets (for example, safety devices and control equipment) that protect them.

The team assigns a safety integrity level (SIL) to each safety provision version. This numeric value, usually on an ascending scale between 0 and 4, is a measure of the amount of risk inherent in the failure that the provision prevents or mitigates. The provision’s SIL is used in SIF analyses to calculate the impact of a possible failure.

Safety Regulation

In APM, safety regulations are typically identified by reference numbers. On SIF analyses, the team identifies the related safety regulation when performing risk analysis.

Safety Type

Safety types are user-defined settings that control the status, approval options, and appearance of the objects to which they are applied. The type’s definition specifies whether it can be used with safety override incidents, safety provisions, or both.

Unwanted Situation

An unwanted situation describes the result of a hazard scenario such as loss of containment. Examples are “Explosion in venting system” and “Emission of toxic gases”. In SIF and HAZOP analyses, the team identifies an unwanted situation, along with the HAZOP checklist item and inspection regime, on each failure mode.

Term	Definition
Change Set	A change set value in APM is usually a reference to a change request generated by a Management of Change (MOC) system. It provides a basic reference between the request and the change made in APM. You can assign change sets to safety provision versions and strategy development analyses.
HAZOP Checklist	A HAZOP checklist item represents an abnormal operating condition, such as high flow, low level, or incorrect valve positioning. Checklist items are listed in SIF and HAZOP analyses, where failure modes can be created to assess causes, effects, consequence severity, risk levels, and more.
Safety Instrumented Function Analysis	Safety instrumented function (SIF) analysis is one of the strategy development methodologies available in APM. The safety analysis team studies system-level and related assets to determine loss of containment scenarios, identify risk levels, and identify the safety provisions that protect against, or mitigate, loss of containment.
Safety Integrity Level	The design team assigns a safety integrity level (SIL) to each safety provision. This numeric value, usually on an ascending scale between 0 and 4, is a measure of the amount of risk inherent in the failure that the provision prevents or mitigates. The provision’s SIL is used in SIF analyses to calculate the impact of a possible failure.
Safety Override	A provision version’s safety override identifies the procedures that an operator or technician should follow when a safety device malfunctions in order to keep the facility operating safely while the device is being fixed or replaced. When a safety device fails, an APM user (for example, an engineer, manager, or operator) creates an override incident in the system that records the details and recommendations.
Safety Provision	The safety design team identifies the safety processes, systems, and procedures that prevent or mitigate hazards. Safety provisions record the actions to be performed, the checklist of items, and instructions. The provision version defines the safety override that identifies the procedures that an operator or technician should follow when a safety device malfunctions in order to keep the facility operating safely while the device is being fixed or replaced. It also defines a table of protected assets and the assets (for example, safety devices and control equipment) that protect them. The team assigns a safety integrity level (SIL) to each safety provision version. This numeric value, usually on an ascending scale between 0 and 4, is a measure of the amount of risk inherent in the failure that the provision prevents or mitigates. The provision’s SIL is used in SIF analyses to calculate the impact of a possible failure.
Safety Regulation	In APM, safety regulations are typically identified by reference numbers. On SIF analyses, the team identifies the related safety regulation when performing risk analysis.
Safety Type	Safety types are user-defined settings that control the status, approval options, and appearance of the objects to which they are applied. The type’s definition specifies whether it can be used with safety override incidents, safety provisions, or both.
Unwanted Situation	An unwanted situation describes the result of a hazard scenario such as loss of containment. Examples are “Explosion in venting system” and “Emission of toxic gases”. In SIF and HAZOP analyses, the team identifies an unwanted situation, along with the HAZOP checklist item and inspection regime, on each failure mode.