A systematic analysis of the hazards (and their potential causes and consequences)
relevant to a particular process.
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Process Hazard Analysis (PHA)
What are the 5 types of start-up/shut-down?
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Planned; unplanned; emergency; staged; delayed
Friction on a microscopic level, pulling of electrons
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Tribocharging
Planned closure of plant for periodical maintenance and replacements
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Turnaround shut-down
Shut-down that happens when a hazardous situation develops and action is taken
(either manually or automatically) to shut the plant down
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Emergency shut-down
In what terms is the 'reliability' measure of FARSI often expressed?
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, Answer: Probability of failure on demand (PFD)
e.g. Spark discharges; corona; brush' propagating brush; conical pile (maurer);
streaming current charge
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Types of static
Which type of steam is invisible?
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Answer: Superheated steam
frequency measure for cyclically varying things. like mains electricity
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hertz
Reactive measures that look at failures, such as the number of injuries, the number of
near misses etc
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, Lagging indicators
Gas is forced into pipework/vessels and air is forced out as a fire supressant
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Inerting
A very thorough analysis of a process to identify ways in which the process could
deviate from its design intention
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HAZOP
What hazard is caused by water entrained in steam being rapidly moved through a
pipe (as condensate)?
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Answer: water hammer
symbol: εx
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relevant to a particular process.
Give this one a try later!
Process Hazard Analysis (PHA)
What are the 5 types of start-up/shut-down?
,Give this one a try later!
Planned; unplanned; emergency; staged; delayed
Friction on a microscopic level, pulling of electrons
Give this one a try later!
Tribocharging
Planned closure of plant for periodical maintenance and replacements
Give this one a try later!
Turnaround shut-down
Shut-down that happens when a hazardous situation develops and action is taken
(either manually or automatically) to shut the plant down
Give this one a try later!
Emergency shut-down
In what terms is the 'reliability' measure of FARSI often expressed?
Give this one a try later!
, Answer: Probability of failure on demand (PFD)
e.g. Spark discharges; corona; brush' propagating brush; conical pile (maurer);
streaming current charge
Give this one a try later!
Types of static
Which type of steam is invisible?
Give this one a try later!
Answer: Superheated steam
frequency measure for cyclically varying things. like mains electricity
Give this one a try later!
hertz
Reactive measures that look at failures, such as the number of injuries, the number of
near misses etc
Give this one a try later!
, Lagging indicators
Gas is forced into pipework/vessels and air is forced out as a fire supressant
Give this one a try later!
Inerting
A very thorough analysis of a process to identify ways in which the process could
deviate from its design intention
Give this one a try later!
HAZOP
What hazard is caused by water entrained in steam being rapidly moved through a
pipe (as condensate)?
Give this one a try later!
Answer: water hammer
symbol: εx
Give this one a try later!
