User:Milton Beychok/Sandbox: Difference between revisions

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imported>Milton Beychok
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{| class = "wikitable" align="left"
 
|+ Definitions
|-
!Term !!Definition
|-
|Hazard
|A source, situation, event, circumstance or condition with the potential to cause harm,<br/>
including ill health, injury or death, production losses, or damage to the [[Natural environment|environment]].
|-
|Study nodes<br/>(or process sections)
|Section of the process equipment with definite boundaries (for example, the [[piping]]<br/>from a process vessel to a [[pump]]) within which ''process parameters'' are investigated<br/>to determine the effect of ''deviations''s from the ''design intention''.
|-
|Process parameter
|A physical or chemical property involved in a ''study node'', including items such as<br/>[[temperature]], [[pressure]], [[pH]], [[concentration]], [[chemical reaction|reaction]].
|-
|Deviation
|Departures from the ''design intention'' that are discovered by systematically applying<br/>the pertinent ''guide words'' applicable for each study node.
|}






{{Image|Hazop sequence.png|right|400px}}
{{Image|Hazop sequence.png|right|400px}}

Revision as of 06:26, 7 July 2010

Risk Ranking Matrix
   Severity    Liklihood
 Frequent   Probable  Occasional     Remote    
Major Unacceptable Unacceptable Unacceptable High
Moderate Unacceptable High High Medium
Small High Medium Low Low
Insignificant Medium Low Low low
Frequent = Once or more per year
Probable = Between once or more per year and once per 10 years
Occasional = Between once per 10 years and once per 30 years
Remote = less than once per 30 years
Definitions
Term Definition
Hazard A source, situation, event, circumstance or condition with the potential to cause harm,

including ill health, injury or death, production losses, or damage to the environment.

Study nodes
(or process sections)
Section of the process equipment with definite boundaries (for example, the piping
from a process vessel to a pump) within which process parameters are investigated
to determine the effect of deviationss from the design intention.
Process parameter A physical or chemical property involved in a study node, including items such as
temperature, pressure, pH, concentration, reaction.
Deviation Departures from the design intention that are discovered by systematically applying
the pertinent guide words applicable for each study node.


(PD) Diagram: Milton Beychok