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1 Introduction INSTALLATION GUIDE FOR STATIONARY, ELECTRIC-MOTOR- DRIVEN, CENTRIFUGAL LIQUID OXYGEN PUMPS IGC Document 148/14/E Revision EIGA Doc 148/08 EUROPEAN INDUSTRIAL GASES ASSOCIATION AISBL AVENUE DES ARTS 3-5 • B – 1210 BRUSSELS Tel: +32 2 217 70 98 • Fax: +32 2 219 85 14 E-mail: [email protected] • Internet: www.eiga.eu IGC Doc 148/14 INSTALLATION GUIDE FOR STATIONARY, ELECTRIC-MOTOR- DRIVEN, CENTRIFUGAL LIQUID OXYGEN PUMPS Disclaimer All technical publications of EIGA or under EIGA's name, including Codes of practice, Safety procedures and any other technical information contained in such publications were obtained from sources believed to be reliable and are based on technical information and experience currently available from members of EIGA and others at the date of their issuance. While EIGA recommends reference to or use of its publications by its members, such reference to or use of EIGA's publications by its members or third parties are purely voluntary and not binding. Therefore, EIGA or its members make no guarantee of the results and assume no liability or responsibility in connection with the reference to or use of information or suggestions contained in EIGA's publications. EIGA has no control whatsoever as regards, performance or non performance, misinterpretation, proper or improper use of any information or suggestions contained in EIGA's publications by any person or entity (including EIGA members) and EIGA expressly disclaims any liability in connection thereto. EIGA's publications are subject to periodic review and users are cautioned to obtain the latest edition. Reproduced with permission from the Compressed Gas Association. All rights reserved EUROPEAN INDUSTRIAL GASES ASSOCIATION AISBL Avenue des Arts 3-5 B 1210 Brussels Tel +32 2 217 70 98 Fax +32 2 219 85 14 E-mail: [email protected] Internet: www.eiga.eu IGC DOC 148/14 Table of Contents 1 Introduction ............................................................................................................................................ 1 2 Scope and purpose ............................................................................................................................... 1 2.1 Scope ............................................................................................................................................. 1 2.2 Purpose .......................................................................................................................................... 2 3 Definitions .............................................................................................................................................. 2 3.1 Buffer gas ....................................................................................................................................... 2 3.2 Cold end ......................................................................................................................................... 2 3.3 Containment enclosure .................................................................................................................. 2 3.4 Distance piece ................................................................................................................................ 2 3.5 Incident ........................................................................................................................................... 2 3.6 Publication terminology .................................................................................................................. 2 3.7 Pump system .................................................................................................................................. 3 3.8 Purge gas ....................................................................................................................................... 3 3.9 Qualified technical personnel ......................................................................................................... 3 3.10 Warm end ................................................................................................................................... 3 4 Safety considerations ............................................................................................................................ 3 4.1 Properties of oxygen ...................................................................................................................... 3 4.2 Oxidation hazards .......................................................................................................................... 4 4.3 Cryogenic hazards ......................................................................................................................... 4 4.4 Vaporisation and pressure hazards ............................................................................................... 5 4.5 Incidents ......................................................................................................................................... 5 4.6 Reapplication of used equipment ................................................................................................... 6 5 Pump design .......................................................................................................................................... 6 5.1 User caution ................................................................................................................................... 6 5.2 Materials of construction ................................................................................................................ 7 5.3 Cold-end components .................................................................................................................... 8 5.4 Mechanical design........................................................................................................................ 11 5.5 Shaft bearings .............................................................................................................................. 12 5.6 Pump motors ................................................................................................................................ 13 6 Installation............................................................................................................................................ 13 6.1 Primary installation safety method ............................................................................................... 13 6.2 Hazard zones ............................................................................................................................... 14 6.3 Barriers ......................................................................................................................................... 17 6.4 Layout ........................................................................................................................................... 18 6.5 Pipework ....................................................................................................................................... 19 6.6 Additional considerations ............................................................................................................. 20 7 Controls and instrumentation............................................................................................................... 20 7.1 General ......................................................................................................................................... 20 7.2 Controls ........................................................................................................................................ 21 7.3 Maintenance and analytical tools ................................................................................................. 22 8 Operation and maintenance ................................................................................................................ 22 8.1 Warning signs ............................................................................................................................... 22 8.2 Training ........................................................................................................................................ 22 8.3 Startup and operation ................................................................................................................... 23 8.4 Condition assessment .................................................................................................................. 24 8.5 Maintenance and repair ............................................................................................................... 24 8.6 Filters/screens .............................................................................................................................. 25 9 References .......................................................................................................................................... 25 IGC EIGA 148/14 Amendments to 148/08 Section Change Editorial to align style with IHC associations 1 Introduction rewritten 3 Definitions expanded 4.5.1 More detail on incidents 5.2.1 Clarification on materials 6.5.1 Section rewritten 7.2.2 New section 8.5.2 Additional requirements for repair procedures Note: Technical changes from the previous edition are underlined 2 IGC DOC 148/14 1 Introduction Pumping liquid oxygen, like many current processes, is accompanied by some degree of hazard that needs to be recognised and addressed. The hazards include liquid under pressure, cryogenic
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