Guideline Mechanical and Process Isolations （指导机械和过程分解动作）.pdfVIP

WMC Environment, Health Safety Management System Guideline Mechanical and Process Isolations Major Hazard Standard MHS-07 DocsOpen Ref: 161146, 13/10/2004 Uncontrolled copy – check web for latest revision Revision Reviewed Description of Changes Date Approved 0 First Issue 13/10/2004 D Batchler © WMC Resources Ltd WMC has developed this document for internal use, specific to circumstances and conditions within its operations. It is intended to provide general information and its applicability to external parties may therefore be limited. WMC makes no representations as to the applicability of the information for use by any party other than WMC and should not be relied upon as such. WMC provides no representation or warranty as to safety or business outcomes arising from application of this document and its requirements by third parties. Guideline – Mechanical and Process Isolations CONTENTS 1 PURPOSE AND SCOPE 3 2 DEFINITIONS 3 3 REFERENCES 3 4 DETAILS 4 4.1 Overview 4 4.2 General 4 4.3 Risk Assessment 5 4.4 Isolation Standards 6 4.5 Isolation Methods 7 4.6 Proving Positive Isolation 8 4.7 Long Term Isolations 9 4.8 Process De-isolation 10 5 APPENDICES 12 Isolation Selection Tool 13 Isolation Devices 17 Special Precautions 21 DocsOpen Ref: 161146 Last Updated: 13/10/2004 © WMC Resources Ltd Page 2 of 23 Guideline – Mechanical and Process Isolations 1 PURPOSE AND SCOPE This