PHAST软件介绍及应用
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PHAST
Tutorial Manual
DNV SOFTWARE Palace House, 3 Cathedral Street, London SE19DE, UK http://www.dnv.com/software © Copyright Det Norske Veritas. All Rights Reserved. No reproduction or broadcast of this material is permitted without the express written consent of DNV. Contact software.risk@dnv.com for more information. Contents
Chapter 1 An Introduction to PHAST 1
In the first chapter you open an example analysis provided with the program,
explore its main features, and run the calculations and view the results –
without having to enter or change any input data.
Chapter 2 Setting up your own Analysis 18
The second chapter guides you through the process of setting up a Study
Folder for performing consequence calculations for a range of common types
of hazardous event. The tutorial supplies all of the input values that you will
need to complete the analysis.
Chapter 1: Introduction
Chapter 1
An Introduction to PHAST What to Expect of this Tutorial
The aim of this tutorial is to make you familiar with the ideas and techniques involved in performing a consequence analysis with PHAST, and to give you practice in
defining a range of common types of hazardous events. By the time you have finished
the tutorial you should have a firm understanding of the issues involved, and be ready
to start work on an analysis of your own.
The tutorial is divided into two chapters. In this first chapter you will open an example
analysis provided with the program, explore its main features, and run the calculations and view the results – without having to enter or change any input data. In the second
chapter you will create a new analysis, defining a range of hazardous events and
performing a consequence analysis for them.
The tutorial should take 1-2 hours to complete. You do not have to complete it in a
single sitting, and can take a break between chapters if you prefer. Starting the Program Running
When you install the program, the installation process places a DNV Software folder
under Programs in your Start menu, and also adds a PHAST shortcut to your Desktop.
You can use either method to start the program running. The Main Window When you start the program running, the main window will open as shown.
The Main Window on Startup
1 Chapter 1: Introduction
The first line in the Message Log should state that the “Licence is valid”. You must have a valid license for PHAST set up on your computer in order to be able to enter
data and run the calculations. If the Message Log says that you do not have a valid
license, you should contact product support using the details given under Product
Support in the Help menu.
The window will normally open with no Study Folder loaded – where a “Study
Folder” is a file that contains the definition of a consequence analysis – and you must
open or create a Study Folder file before you can perform any modelling work with the
program. If you wish, you can change the Installation Preferences under the Options
menu so that the program starts by automatically opening a Study Folder (e.g. the
Study Folder you worked on most recently). Opening the PHAST Example Study Folder
The program is supplied with an example Study Folder called “PHAST Example
Study”, which is used in this chapter to give a quick introduction to the terminology
and approach used in the program.
To open the Study Folder, choose Open
Example… from the File menu. A File Open dialog will appear as shown,
displaying the contents of the Examples
folder installed with the program files.
There are several file-formats available for Study Folder files, but the default
format is the *.psu format, and the
PHAST Example Study file is in this format. Select the file, and click on
Open
.
The appearance of the main window changes when a Study Folder is open: there are many more toolbars, and there is a pane with five tab sections at the left side of the
window, as shown. The pane is known as the “Study Tree” pane, and you work in its various tab sections to set up the input data for the analysis.
The Main Window with a Study Folder Open
2 Chapter 1: Introduction The Study Tree Pane
The Study Tree pane allows you to organise and edit the input data for your
consequence analysis. The pane contains a number of tab sections, each of which
covers a different type of input data, and these tab sections are described below.
The Models Tab Section
The term “Model” is used in two different ways in
PHAST, though these different meanings are unlikely
to cause you confusion.
“Model”: a set of available calculations
The program has several different sets of calculations
