Hazards Analysis Deviation Records

HAZOP Deviation records store details on the condition within a process that deviates from the normal behavior during that process, resulting in a risk. This topic provides an alphabetical list and description of the fields that exist for the HAZOP Deviation family. These fields appear on the HAZOP Deviation datasheet, unless otherwise specified. The information in this table reflects the baseline state and behavior of these fields.

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Field	Data Type	Description	Behavior and Usage
Deviation/Guideword	Character	A brief description of the deviation.	This field contains the description of the System Codes that exist in the MI_HAZOP_DEVIATIONS_TYPE System Code table. You can choose from the following baseline values: More Pressure Less Pressure More Temperature Less Temperature More Flow Less Flow No Flow This value appears in the list of Deviations in the hierarchical view of the components of the System/Node.
Deviation/Guideword Number	Character	A set of numeric values, separated by a decimal point, which represents the location in which the Deviation appears in the hierarchical view of the components of the System/Node.	This field is disabled and populated with a set of numeric values, separated by a decimal point. The first number is the value that exists in the System/Node Number field in the System/Node record to which the Deviation is linked. The second number is the value that exists in the Sequence Number field in the Deviation.
Sequence Number	Number	A numeric value that represents the sequence in which the Deviation appears in the hierarchical view of the components of the System/Node, relative to the other Deviations that are linked to the same System/Node.	This field does not appear on the datasheet by default. This value in this field is used to populate the Deviation/Guideword Number field.

Field

Data Type

Description

Behavior and Usage

Deviation/Guideword

Character

A brief description of the deviation.

This field contains the description of the System Codes that exist in the MI_HAZOP_DEVIATIONS_TYPE System Code table. You can choose from the following baseline values:

More Pressure
Less Pressure
More Temperature
Less Temperature
More Flow
Less Flow
No Flow

This value appears in the list of Deviations in the hierarchical view of the components of the System/Node.

Deviation/Guideword Number

Character

A set of numeric values, separated by a decimal point, which represents the location in which the Deviation appears in the hierarchical view of the components of the System/Node.

This field is disabled and populated with a set of numeric values, separated by a decimal point.

The first number is the value that exists in the System/Node Number field in the System/Node record to which the Deviation is linked.
The second number is the value that exists in the Sequence Number field in the Deviation.

Sequence Number

Number

A numeric value that represents the sequence in which the Deviation appears in the hierarchical view of the components of the System/Node, relative to the other Deviations that are linked to the same System/Node.

This field does not appear on the datasheet by default. This value in this field is used to populate the Deviation/Guideword Number field.