Is it necessary to install a downhole safety valve in a subsea ... - NTNU
Is it necessary to install a downhole safety valve in a subsea ... - NTNU
Is it necessary to install a downhole safety valve in a subsea ... - NTNU
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Appendix E<br />
This appendix presents the four basic sequential steps of a HAZOP accord<strong>in</strong>g <strong>to</strong> the<br />
IEC 61882 [2]. Figure E-1 illustrates the basic steps.<br />
Def<strong>in</strong><strong>it</strong>ion<br />
Def<strong>in</strong>e scope and objectives<br />
Def<strong>in</strong>e responsibil<strong>it</strong>y<br />
Select team<br />
Plan the study<br />
Collect data<br />
Agree style of record<strong>in</strong>g<br />
Estimate the time<br />
Arrange a schedule<br />
Preparation<br />
Exam<strong>in</strong>ation<br />
Divide system <strong>in</strong><strong>to</strong> parts<br />
Select a part and def<strong>in</strong>e design <strong>in</strong>tent<br />
Identify deviation by us<strong>in</strong>g guide-words on each element<br />
Identify consequences and causes<br />
Identify whether a significant problem exists<br />
Identify protection, detection and <strong>in</strong>dicat<strong>in</strong>g mechanisms<br />
Identify possible remedial/m<strong>it</strong>igat<strong>in</strong>g measures (optional)<br />
Agree actions<br />
Repeat for each element and then each part of the system<br />
Documentation and follow-up<br />
Record the exam<strong>in</strong>ation<br />
Sign off the documentation<br />
Produce the report of the study<br />
Follow up that actions are implemented<br />
Re-study any parts of system if <strong>necessary</strong><br />
Produce f<strong>in</strong>al output report<br />
Figure E-1 The four basic sequential steps of a HAZOP [2]<br />
E-1