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BSI PD IEC TR 63226:2021

BSI PD IEC TR 63226:2021

$142.49

Managing fire risk related to photovoltaic (PV) systems on buildings

Published By Publication Date Number of Pages
BSI 2021 30
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This document, which is a Technical Report, is intended for use as guidance for reducing fire risks in general and for site-specific needs for buildings with PV systems. In addition to the general recommendations, technical, installation, and maintenance measures can be selected to reach the intended safety level of the PV system and building, depending on the results of a risk assessment. This document contains general information about building related risks and includes measures for reducing those risks. These measures are not general requirements or recommendations. They are explained as a guide for selecting suitable measures depending on the on-site needs.

PDF Catalog

PDF Pages PDF Title
2 undefined
4 CONTENTS
6 FOREWORD
8 INTRODUCTION
9 1 Scope
2 Normative references
3 Terms and definitions
4 Risk evaluation
4.1 General
4.2 Site selection
4.3 Aspects for building risk evaluation
4.3.1 Roofing materials
10 4.3.2 Building construction
4.3.3 Building contents
11 4.3.4 Use of building
4.3.5 Building type considerations regarding financial risks
4.4 Measures for supporting firefighter and rescue service operations
4.4.1 General
12 4.4.2 Response times of emergency responders and available apparatus
4.4.3 Geometry, height, accessibility of building
13 4.4.4 Coordination with fire alarm systems
4.5 Other organizational aspects
4.5.1 Briefing fire services in on-site specific aspects
Figures
Figure 1 – Cable routing related to pathways
14 4.5.2 Harmonize measures with fire protection measures of building
4.5.3 Harmonize measures with owner, user and building and inventory insurance
5 Technical PV system design measures for fire prevention
5.1 General
5.2 Initial PV system design considerations to minimize risk
5.2.1 General
5.2.2 Ventilation
15 5.2.3 Accumulation of flammable material
5.2.4 Cabling
5.3 Arc-fault detection
16 5.4 Earth-fault detection
5.5 Automatic shutdown after first fault
5.6 Coverboard
17 6 Technical PV system design measures for supporting firefighter and rescue service operations
6.1 General
6.2 Initial PV system design considerations to minimize risk
6.2.1 General
6.2.2 DC cable lengths and routing
6.2.3 DC cabling marking
6.2.4 Access pathways and escape routes
6.2.5 Caution board
6.3 Generator/string-level shutdown
18 6.4 Module-level control, ELV-systems, distributed array protection
19 6.5 Cable routing measures
6.6 Fire-resistant cable raceways
7 Installation and commissioning
7.1 General
7.2 Important installation requirements impacting risk
20 7.3 Commissioning procedures
7.4 Documentation – clear installation, owners, fire services and maintenance manuals for PV equipment
8 Operation and maintenance
8.1 General
8.2 Inspection of electric system
21 8.3 Inspection of mounting structure and building influence
8.4 Inspection of pathways
8.5 Cleaning
8.6 Thermography
8.7 Recommendations for empty buildings or systems not under supervision
9 Corrective measures after fire
9.1 General
9.2 Measures to avoid safety risks or further damage
22 9.3 Safety inspection
9.4 Measures to bring PV system into a safe state
23 Annex A (informative)Analysis from fire incidents in PV systems
A.1 General
Figure A.1 – Number of identified incidents and severity of effecton surroundings for a total of about 400 fire reports
Figure A.2 – Distribution of fire reports depending on mounting type
Table A.1 – Number of incidents with a certain damage
24 A.2 Component where fire started
Figure A.3 – For cases of damaged buildings only:distribution of fire reports depending on mounting type
Figure A.4 – Counts of system section where fire started
25 A.3 Cause of incident
Figure A.5 – Counts of component where fire started
Figure A.6 – Distribution of identified causes of fire incidents
27 A.4 When did incidents occur?
Figure A.7 – Number of incidents over operation system age
28 Bibliography

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BSI PD IEC TR 63226:2021
$142.49