BS EN ISO 21789:2022

$215.11

Gas turbine applications — Safety

Published By	Publication Date	Number of Pages
BSI	2022	108

Guaranteed Safe Checkout

Category: BSI

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. We’re here to assist you 24/7.
Email:[email protected]

Description

This document covers the safety requirements for aero derivative and industrial gas turbine prime mover applications using liquid or gaseous fuels and the safety related control and detection systems and essential auxiliaries for all types of open cycles (simple, combined, regenerative, reheat, etc.) used in onshore and offshore applications including floating production platforms. This document applies to mechanical, electrical, and pressure equipment components and systems necessary for the functionality of the prime mover. For example, but not limited to, a core gas turbine auxiliary gearbox, an output transmission gear box, combustion system, air filtration, gas turbine controls, oil systems, and fuel system. This document also covers integration of safety risks within the overall installation, e.g. exhaust purging or drainage. This document details the anticipated significant hazards associated with aero derivative and industrial gas turbine prime movers and specifies the appropriate preventative measures and processes for reduction or elimination of these hazards. This document addresses the risks of injury or death to humans and risks to the environment. Equipment damage without risk to humans or the environment is not covered. The overall objective of this document is to ensure that equipment is designed, constructed, operated and maintained throughout its life in accordance with ISO 12100:2010. This document approaches gas turbine safety from an international perspective based on the content of existing, recognized ISO and IEC standards to the greatest extent possible. Where no ISO or IEC standard exists, other codes or standards (such as EN, NFPA, etc.) have been included. Minimum functional safety levels cannot be addressed in this document, as minimum functional safety levels are both application and site specific. This document excludes the following items; — exhaust-system structural design; — driven equipment; — micro turbines as covered by ISO 19372:2015; — gas turbines used primarily for direct and indirect propulsion; — gas turbines used for mobile applications; — special heat source applications; — gas turbines in research and development programs; — compressed-air energy storage plants. Where appropriate, this document can be used to give general guidance in such applications. This document is not applicable to machinery or safety components manufactured before the date of its publication.

PDF Catalog

PDF Pages	PDF Title
2	undefined
5	European foreword Endorsement notice
6	Annex ZA (informative) Relationship between this European Standard and the essential requirements of Directive 2006/42/EC aimed to be covered Table ZA.1 — Correspondence between this European Standard and Annex I of Directive 2006/42/EC
8	Annex ZB (informative) Relationship between this European Standard and the essential requirements of EU Directive 2014/34/EU Table ZB.1 — Correspondence between this European Standard and Directive 2014/34/EU
16	Foreword
17	Introduction
18	1 Scope
19	2 Normative references
21	3 Terms and definitions
23	4 List of significant hazards 5 Safety requirements 5.1 General 5.2 Risk assessment
24	5.2.1 Risk assessments requirements
25	5.2.2 As low as reasonably practical 5.3 Modifications and replacement parts 5.4 Foreseeable misuse 5.5 Lifetime 5.6 Hazard combinations 5.7 Noise reduction at design stage
26	5.8 Mechanical 5.8.1 Guarding 5.8.2 Accessibility for maintenance
27	5.8.3 Casing design 5.8.4 Gas turbine compressor surge 5.8.5 Stability and handling
28	5.8.6 Overload of couplings, rotating shafts and gears due to torque 5.8.7 Vibration 5.8.8 Mechanical failure caused by corrosion 5.8.9 Design methods and materials
29	5.8.10 Gas turbine temperatures 5.8.11 Environmental loads 5.8.12 Assembly features 5.8.13 Couplings 5.8.14 Rotor bearings 5.8.15 Rotating part failure
30	5.8.16 Foreign object damage (FOD) screen 5.8.17 Gearbox 5.8.18 Starting systems
31	5.8.19 Low ambient temperature conditions 5.9 Gas turbine compressor air inlet system 5.9.1 General 5.9.2 Inlet air contamination 5.9.3 Icing monitoring and prevention
32	5.9.4 Implosion protection 5.9.5 Inlet explosion protection
33	5.9.6 Waste disposal through combustion 5.9.7 Recirculation 5.9.8 Gas turbine compressor air inlet ducting
34	5.10 Fuel systems 5.10.1 General 5.10.2 Fuel supply quality and supply conditions 5.10.3 Pressure (leakage) testing 5.10.4 Fuel supply heating 5.10.5 Gas fuel systems
38	5.10.6 Liquid fuel systems
42	5.10.7 Multi-fuel systems 5.10.8 Fuel purging
43	5.10.9 Fuel drainage 5.11 Combustion supervision 5.11.1 General 5.11.2 Requirements for ignition
44	5.11.3 Extinction safety time 5.12 Exhaust system 5.12.1 Damper controls 5.12.2 Flexible joint location 5.12.3 Exhaust outlet 5.12.4 Explosion protection
45	5.13 Enclosures 5.13.1 General
46	5.13.2 Enclosure structure 5.13.3 Enclosure fire precautions 5.13.4 Explosion prevention and protection — Area classification — Ventilation 5.13.5 Gas detection
47	5.13.6 Enclosure purging 5.13.7 Flammable mist 5.13.8 Access and doors
48	5.13.9 Entrapment 5.14 Lighting 5.15 Fire precautions 5.15.1 General 5.15.2 Structural fire risk reduction 5.15.3 Flammable fluids mitigation and containment
49	5.15.4 Fire protection 5.15.5 Fire detection
50	5.15.6 Fire extinguishing systems
51	5.15.7 Water mist extinguishant 5.15.8 Extinguishing system controls
53	5.15.9 Escape 5.15.10 Uncontrolled release of media and loss of propellant pressure 5.15.11 Vessel thermal relief (burst disc) 5.15.12 Propellant vessels 5.15.13 Release of extinguishant into gas turbine halls, control rooms, etc.
54	5.16 Hazardous area classification and explosion prevention and protection 5.16.1 General 5.16.2 Area classification 5.16.3 Explosion prevention
55	5.16.4 Avoidance or reduction of effective ignition sources
56	5.16.5 Reduction of explosion effects in an enclosed space
58	5.17 Ventilation 5.17.1 General 5.17.2 Cooling 5.17.3 Heating 5.17.4 Hazardous area control 5.17.5 Hot surfaces
59	5.17.6 Ventilation inlet location 5.17.7 Ventilation inlet filtration 5.17.8 Ventilation inlet ducting 5.17.9 Ventilation outlet location 5.17.10 Ventilation monitoring
60	5.18 Fans 5.18.1 Fan guards and structural failure 5.18.2 Air blast oil coolers 5.18.3 Sparking of fan blades 5.19 Flammable gas detection 5.19.1 Type / selection principles 5.19.2 Location principles
61	5.19.3 Settings 5.19.4 Enclosures containing hot surfaces — Screening tool 5.19.5 Maintenance and calibration 5.20 Control and automatic protection systems 5.20.1 General
62	5.20.2 Environmental suitability 5.20.3 Ergonomics 5.20.4 Failure 5.20.5 Calibration 5.20.6 Testing
63	5.20.7 Speed control 5.20.8 Gas turbine emergency shutdown system
64	5.20.9 Interlocks 5.20.10 Cyber security 5.21 Electrical 5.21.1 Design/Installation 5.21.2 Isolation and stored energy
65	5.21.3 Electrostatic energy and bonding 5.21.4 Water ingress
66	5.21.5 Lightning 5.21.6 Electromagnetic compatibility (EMC) 5.21.7 Battery installations 5.21.8 Electrical overload 5.21.9 Electrical power failure
67	5.22 Drains, vents and bleeds 5.22.1 General 5.22.2 Vents for flammable gases 5.22.3 Toxic and hazardous emissions
68	5.22.4 Gas turbine compressor bleeds 5.23 Pressure equipment 5.23.1 General 5.23.2 Design 5.23.3 Hazards 5.23.4 Misuse 5.23.5 Handling and operation
69	5.23.6 Isolation, draining and venting 5.23.7 Fluid injection 5.23.8 Assemblies
71	5.23.9 Safety accessories 5.23.10 Flexible piping (and metal hoses)
72	5.23.11 External fire 5.23.12 Material embrittlement and corrosion 5.23.13 Ultra-violet (UV) resistant pipework 5.24 Auxiliary systems 5.24.1 Lubrication systems
73	5.24.2 Water systems 5.24.3 Hydraulic and pneumatic systems 5.24.4 Utility air supplies 5.25 Installation in a hazardous area
74	5.26 Unenclosed gas turbines in a hall
75	5.27 Decommissioning and disposal 6 Compliance verification 6.1 Quality assurance 6.2 Verification of safety requirements 7 Information for use 7.1 General
76	7.2 Language 7.3 Packaging 7.4 Commissioning
77	7.5 Operation 7.5.1 General 7.5.2 Safety instructions and emergency procedures
78	7.6 Enclosure access 7.6.1 General
79	7.6.2 Risk assessment for accessing enclosures 7.6.3 Limitations under operational conditions 7.6.4 Limitations under non-operational conditions 7.6.5 Access during commissioning and re-commissioning
80	7.6.6 Installations in a hazardous area 7.6.7 Stray electric currents 7.7 Maintenance 7.7.1 General 7.7.2 General maintenance hazards
81	7.7.3 Accessibility, isolation and energy dissipation 7.7.4 Pressure equipment
82	7.7.5 Fire protection systems 7.7.6 Gas detectors 7.7.7 Control systems: maintenance, calibration and testing
83	7.7.8 Hazardous materials and substances 7.8 Warning signs and notices
84	7.9 Noise 7.10 Permit to work (PTW) 7.11 Training
85	7.12 Decommissioning and disposal
86	Annex A (informative) List of significant hazards
98	Annex B (normative) Verification of safety requirements and/or measures
103	Bibliography

Additional information

Status	Definitive
Pages	108
Publication Date	2022-10-31
ISBN	978 0 580 99648 1
Standard Number	BS EN ISO 21789:2022
Title	Gas turbine applications — Safety
Identical National Standard Of	EN ISO 21789, ISO 21789
Replaces	BS ISO 21789:2009
Descriptors	Explosive atmospheres, Gas turbines, Pollution, Exhaust gases, Safety devices, Fire safety, Control systems, Occupational safety, Equipment safety, Turbines, Verification, Risk assessment, Electrical safety, Flammable atmospheres, Hazards
Publisher	BSI
Committee	MCE/16
ICS Codes	27.040 - Gas and steam turbines. Steam engines

Preview PDF


PDF Format	Searchable	Printable	Preview Now

BS EN ISO 21789:2022

PDF Catalog

Related products