ISO/PRF TS 21480
(Main)Glass in building -- General technical requirements of building integrated photovoltaic modules recycling
Glass in building -- General technical requirements of building integrated photovoltaic modules recycling
Titre manque
General Information
Standards Content (sample)
TECHNICAL ISO/TS
SPECIFICATION 21480
First edition
Glass in building — General technical
requirements of building integrated
photovoltaic modules recycling
PROOF/ÉPREUVE
Reference number
ISO/TS 21480:2021(E)
ISO 2021
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ISO/TS 21480:2021(E)
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ISO/TS 21480:2021(E)
Contents Page
Foreword ........................................................................................................................................................................................................................................iv
1 Scope ................................................................................................................................................................................................................................. 1
2 Normative references ...................................................................................................................................................................................... 1
3 Terms and definitions ..................................................................................................................................................................................... 1
4 Fundamental principles ................................................................................................................................................................................ 3
5 Classification ............................................................................................................................................................................................................ 3
5.1 It can be classified according to the type of cell: ....................................................................................................... 3
5.2 It can be classified according to the structure of encapsulation: ................................................................ 3
5.3 It can be classified according to abandoned condition: ....................................................................................... 4
6 Dismantlement ....................................................................................................................................................................................................... 4
7 Collection, transportation and storage ......................................................................................................................................... 6
7.1 General provisions ............................................................................................................................................................................... 6
7.2 Collection ..................................................................................................................................................................................................... 6
7.3 Transportation ........................................................................................................................................................................................ 6
7.4 Storage ........................................................................................................................................................................................................... 7
8 Disassembly ............................................................................................................................................................................................................... 7
8.1 General provisions ............................................................................................................................................................................... 7
8.2 Termination ............................................................................................................................................................................................... 7
8.3 Frame .............................................................................................................................................................................................................. 7
8.4 PV laminate ................................................................................................................................................................................................ 8
9 Treatment .................................................................................................................................................................................................................... 8
9.1 General provisions ............................................................................................................................................................................... 8
9.2 Glass ................................................................................................................................................................................................................. 8
9.3 Interlayer ..................................................................................................................................................................................................... 8
9.4 Solar cell ....................................................................................................................................................................................................... 9
9.5 Welding strip ............................................................................................................................................................................................ 9
9.6 Plastic back sheet ...............................................................................................................................................................................10
10 Recovery .....................................................................................................................................................................................................................10
10.1 Semiconductor materials recovery ....................................................................................................................................10
10.2 Metal materials recovery ......... ....................................................................................................................................................11
10.3 Glass recovery .......................................................................................................................................................................................11
10.4 Polymer materials recovery ......................................................................................................................................................11
11 Management ...........................................................................................................................................................................................................12
Annex A (informative) Data collected for the information statistic system .............................................................13
Annex B (informative) Matters needing attention for recycling ...........................................................................................14
Annex C (informative) Common requirements for work at height ....................................................................................15
Annex D (informative) Examples of requirements applicable to pollutants' emissions .............................16
Bibliography .............................................................................................................................................................................................................................17
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ISO/TS 21480:2021(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.This document was prepared by Technical Committee ISO/TC 160, Glass in building, Subcommittee SC 1,
Product considerations.Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.iv PROOF/ÉPREUVE © ISO 2021 – All rights reserved
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TECHNICAL SPECIFICATION ISO/TS 21480:2021(E)
Glass in building — General technical requirements of
building integrated photovoltaic modules recycling
1 Scope
This document specifies requirements for the recycling of building integrated photovoltaic (BIPV)
modules. It is suitable for crystalline silicon PV modules and thin film modules.
2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 472, Plastics — VocabularyISO 11469, Plastics — Generic identification and marking of plastics products
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp— IEC Electropedia: available at https:// www .electropedia .org/
3.1
waste photovoltaic module
waste PV module
photovoltaic module that the holder discards, or intends to discard, or is required to be discarded
3.2laminated solar photovoltaic glass
laminated solar PV glass
double glass photovoltaic module
double glass PV module
laminated glass that integrates the function of photovoltaic power generation
Note 1 to entry: This term covers both laminated glass (see ISO 12543-3) and laminated safety glass (see
ISO 12543-2).[SOURCE: ISO/TS 18178:2018, 3.1, modified - Photovoltaic has been changed to PV.]
3.3hazardous material
item, element or substance with a potential for harm in terms of human injury or ill health (both short
and long term), damage to property, damage to the environment, or a combination of these
[SOURCE: ISO 30000:2009, 3.5]© ISO 2021 – All rights reserved PROOF/ÉPREUVE 1
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ISO/TS 21480:2021(E)
3.4
collection
logistical process of moving waste photovoltaic module from its source to a place where it can be
recovered[SOURCE: ISO 472:2013, 2.1682, modified — Domain of application has been deleted, and "plastics
waste" has been changed to "waste photovoltaic module".]3.5
storage
temporary storing activity of waste photovoltaic modules at a special place which meets the
requirements for the purpose of collection (3.4), transportation, treatment (3.10) and disposal (3.11)
3.6disassembly
set of activities of demounting and disintegrating waste photovoltaic modules by a manual or
mechanical way for the convenience of treatment (3.10)3.7
re-use
use of a product more than once in its original form
[SOURCE: ISO 472:2013, 2.1708, modified — Note to entry has been deleted.]
3.8
recycling
processing of waste materials for the original purpose or for other purposes, excluding energy recovery
[SOURCE: ISO 472:2013, 2.1706]3.9
recovery
processing waste material for the original purpose or for other purposes, including energy recovery
[SOURCE: ISO 472:2013, 2.1704]3.10
treatment
set of activities of decontamination, disassembly (3.6), comminution and recycling (3.8) of waste
photovoltaic modules3.11
disposal
set of activities for diminishment or elimination of the danger of waste photovoltaic modules
Note 1 to entry: This can be by means of changing physical, chemical and biological characteristics.
Note 2 to entry: The activities of final placement for waste photovoltaic modules in a place or facility that meets
the requirements for environmental protection.3.12
termination
component that is used to extract the direct current from photovoltaic module
3.13
photovoltaic laminate
PV laminate
portion of a photovoltaic module consisting of substrate, encapsulant, complete photovoltaic cell circuit,
and superstrateNote 1 to entry: A photovoltaic module includes a laminate and a junction box. A frame and other accessories can
also be added.2 PROOF/ÉPREUVE © ISO 2021 – All rights reserved
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ISO/TS 21480:2021(E)
[SOURCE: IEC/TS 61836:2016, 3.1.50, modified — The preferred term has been changed to photovoltaic
laminate.]3.14
photovoltaic modules that lose safety performance
PV modules that lose safety performance
photovoltaic modules that have structural, electrical and other types of the safety risk
3.15recovery rate
ratio of the weight of the recovery materials or components to the whole weight of the waste
photovoltaic modules4 Fundamental principles
4.1 The fundamental principles are the maximizing of resource utilization and the minimizing of
environmental pollution.4.2 The treatment shall be conducted according to the following order: re-use, recycling and energy
recovery. The re-use and energy recovery should meet the requirements of related standards or
specifications.4.3 Treatment and disposal shall adopt the current optimal feasible technology. All necessary
measures shall be employed in order to ensure that the effect of recycling process on personnel and the
environment are in accordance with relevant standards during treatment and disposal.
4.4 The participants, including dismantlement, transportation and recycling organizations, shall
establish appropriate information statistic systems for the collection, treatment and disposal of waste
PV modules. The relevant data/information (see Table A.1) shall be saved and be available to competent
departments or organizations.4.5 Waste PV modules should not be landfilled or burnt directly.
4.6 Recovery materials or components should be used in PV modules.
4.7 Matters needing attention for recycling should be given (see Annex B) in the documentation of PV
module.5 Classification
5.1 It can be classified according to the type of cell:
a) Crystalline silicon PV module;
b) Copper indium gallium selenide (CIGS) PV module;
c) Cadmium telluride (CdTe) PV module;
d) Silicon-based thin film PV module;
e) Other types of PV module.
5.2 It can be classified according to the structure of encapsulation:
a) Single glass PV module;
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b) Laminated solar PV glass;
c) Multi-layer glass PV module.
5.3 It can be classified according to abandoned condition:
a) PV module that lose safety performance;
b) PV module with damaged appearances, but the power generation performance works properly;
c) PV module where the power generation performance shows obvious attenuation, but the
appearances are not damaged;d) PV module with undamaged appearances and proper power generation performance, which the
holder discards, or intends to discard for other causes.NOTE Such PV modules can be reused without recycling.
6 Dismantlement
6.1 Dismantlement of waste PV modules shall avoid excessive emissions of pollutants, such as screw,
rubber and metal components.6.2 According to the methods of ISO 15928, the safety level of building after dismantlement of waste
PV module should not be lower than that of building before dismantlement.6.3 The electrical safety of the whole dismantlement should conform with the requirements of
IEC 60364-7-704, IEC 60364-5-54 and IEC 60364-5-55.6.4 The requirements related to the dismantlement of waste PV module can be found in national or
local building safety codes.6.5 Structure safety of buildings and safety of users shall be ensured during dismantlement process.
6.6 The system shall be electrically isolated before dismantlement, and it shall not be powered on until
the whole system is repaired after being partly dismantled.6.7 Safety nets should be installed in the working area to avoid tools and materials falling. Workers
should be equipped with the safety devices such as safety helmets, safety ropes, safety shoes and safety
clothes.6.8 The integrity of PV modules should be ensured during the dismantlement process.
6.9 In order to avoid electric shock accidents, after the waste PV module is separated from the inverter,
the cables of the module and inverter shall be insulated with insulating materials.
6.10 For cracked module, in order to prevent electric shock, the surface of the cracked waste PV module
should be insulated in advance, if it is necessary to dismantle in rain and snow weather. Condition a) and
b) should not be met at the same time:a) sunlight irradiates directly on module illumination side;
b) human gets in contacts with the internal electrode of module directly or through conductive fluid.
6.11 For cracked module, before dismantlement, safety measures should be set to prevent the broken
parts from falling.4 PROOF/ÉPREUVE © ISO 2021 – All rights reserved
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6.12 The inner side of the building where waste PV module is disassembled shall be properly secured.
6.13 According to the disassembly height of the waste PV module, the appropriate size of the no walking
area on the ground shall be set referring to Table 1.Table 1 — Determination of the size of the no walking area
Dismantlement height, h No walking area radius
m m
2 ≦ h ≦ 5 3
5 < h ≦ 15 4
15 < h ≦ 30 5
h > 30 6
6.14 During the entire dismantlement process, safety measures for waste PV module should be taken to
avoid accidents such as module falling, severely swinging, and bursting, caused by operation, wind and
rain, etc.6.15 For waste PV module on the side of the building, if conditions permit, dismantlement work should
be operated from the interior of the building rather than from outside the building.
6.16 If traffic is too heavy, the operation time should select the daytime period when traffic is not heavy.
If the above condition cannot be met, the road can be temporarily closed, or the radius of the no walking
area can be expanded.6.17 In the case of wind speed greater than 10 m/s or other bad weather such as rain, thunder, snow
and fog, the waste PV module dismantlement work should not be operated, unless authorized by national
or local regulations.6.18 Before dismantlement, workers shall clean the work area, and remove water, snow, oil, dust and
other slippery materials from the surface of waste PV module components.6.19 Before dismantlement, a safety plan shall be set according to building conditions. The workers
shall track the safety of both the tool and the dismantling worker in real time during dismantlement
process, avoiding accidents such as tool falling, rope breaking, unstable fixed point. The communication
between the workers shall be clear.6.20 Safety and construction equipment shall be fully prepared before waste PV module dismantlement
work.6.21 If the building of disassembled waste PV modules is in use, it should install new BIPV modules or
materials with building function to repair the building immediately.6.22 The dismantled modules should be recorded into the information statistics system to form a
complete information system with the transportation and recycling parts.6.23 The dismantlement of photovoltaic insulating glass units with PV power generation should avoid
glass breakage caused by operation.6.24 The accessories of BIPV modules should be removed during the dismantlement processing. If
the accessories cannot be removed on the spot, these modules should be collected separately, and the
accessories should be removed before recycling processing.© ISO 2021 – All rights reserved PROOF/ÉPREUVE 5
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6.25 The requirements related to dismantlement work can be found in national or local regulations for
work at height.NOTE Refer to Annex C for common requirements for work at height.
7 Collection, transportation and storage
7.1 General provisions
7.1.1 In the process of collection, transportation and storage, the harm caused by electric leakage of
solar cell shall be prevented.7.1.2 For PV modules that lose safety performance, these shall be classified prior to collection,
transportation and storage. This shall be conducted in a manner that ensures personal injury is avoided.
7.1.3 For PV modules having risk of heavy metals leakage, these shall be classified prior to collection,
transportation and storage. This shall be conducted in a manner that ensures environmental pollution is
avoided.7.1.4 PV modules shall avoid secondary pollution influencing the recycling, such as oil pollution and
saline-alkali corrosion.7.1.5 Sort waste PV modules according to the size and shape of waste PV modules before transportation
and storage.7.2 Collection
7.2.1 Waste PV modules shall be prohibited from being mixed with domestic garbage or industrial
solid waste.7.2.2 Collected waste PV modules shall be stored according to the requirements of 7.4.
7.2.3 Collector shall deliver collected waste PV modules to qualified organizations for disassembly and
treatment.7.2.4 Protection measures shall be set up to avoid harming of modules and broken components falling
in the process of collection, such as broken glass, interlayer, termination, cable and solar cell, which can
cause injury or pollute the environment.7.3 Transportation
7.3.1 The waste PV module should be recorded in the statistical information management system
before transportation.7.3.2 In the process of transportation, unauthorized disassembly and treatment to waste PV modules
shall not be conducted in any form.7.3.3 Protective measures shall be set up to avoid harming of modules and broken components falling
in the process of transportation, such as broken glass, interlayer, termination, cable and solar cell, which
can cause injury or pollute the environment.7.3.4 Secondary pollution to waste PV modules shall be prevented in the process of transportation,
especially oil pollution and saline-alkali corrosion. Transportation organization should connect with a
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recycling organization to ensure whether the recycling process requires avoiding secondary damage to
PV modules or other requirements.7.4 Storage
7.4.1 Requirements for the storage site of waste PV modules can be found in the relevant regulations,
i.e. national and local laws and regulations.7.4.2 All kinds of waste PV modules shall be classified prior to storage and all module types (see 5.1)
shall be appropriately marked at prominent positions.7.4.3 It shall be guaranteed that pollutants, such as broken glass, solar cell, termination and cable,
cannot drop down during storage, avoiding pollution to environment.7.4.4 Secondary pollution, especially oil pollution and saline-alkali corrosion, should be prevented
during storage. Storage organization should connect with a recycling organization to confirm whether
the recycling process requires avoiding secondary damage to PV modules or other requirements.
8 Disassembly8.1 General provisions
8.1.1 It shall be strictly prohibited to discard any part of waste PV modules, which are taken out in
advance.8.1.2 Materials and all the taken-out parts shall be stored in appropriate classified containers and be
marked clearly. Hazardous material should be classified correctly and stored carefully avoiding dangers
to personnel and pollutants to environment.8.2 Termination
8.2.1 The gas containing dust, which is produced in the process of sorting and crushing, shall be dealt
with by the waste gas processing system. After treatment, waste gas should conform with the relevant
requirements shown in Table D.1.8.2.2 After the treatment of scrap wire and cable, all metals, plastic and rubber shall be recycled.
8.2.3 Termination waste should not be landfilled directly.8.2.4 Waste water, produced in the process of waste termination cleaning, should be dealt with by the
waste water treatment system, and should be recycled. After treatment, waste water should conform
with the relevant requirements shown in Table D.1.8.3 Frame
8.3.1 The frame should be mechanically disassembled before other recycling processing.
8.3.2 Mechanical disassembly shall be performed in a manner that prevents disassembled metal
components from hurting workers.8.3.3 After disassembly, the metal components that can be directly recycled should be subjected to
cleaning, polishing and edge grinding.© ISO 2021 – All rights reserved PROOF/ÉPREUVE 7
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8.3.4 After disassembly, the metal components that cannot be directly recycled shall be subjected to
other environmentally friendly processes, e. g. melting, extraction, etc., and the processes shall guarantee
no leakage.8.4 PV laminate
8.4.1 Hot-melt methods or chemical techniques can be used to decompose interlayer while recycling
PV laminate. Then the glass or organic back sheet should be peeled from the PV laminate. The integrity of
the PV laminate should be ensured as far as possible.8.4.2 A mechanical or chemical method can be used to separate the welding strip and the solar cell.
8.4.3 A mechanical method can be used to break the left PV laminate parts into small pieces. A dust
collection system should be used during this process.8.4.4 Multi-layer glass PV modules should be disassembled to glasses and laminated solar PV glass,
then following the recycling processing of laminated solar PV glass.8.4.5 The disassembly of photovoltaic insulating glass units should take the desiccant collection
into consideration, avoiding desiccant pollution to environment. If the heat method is adopted, the
disassembly should also consider poisonous gases during the high temperature processing during which
the following should not be adopted: too high temperature or poisonous gases treatment.
9 Treatment9.1 General provisions
9.1.1 When a hot-melt method and other heating methods are used to treat waste PV modules or parts
of PV modules, waste gas treatment facilities shall be employed and the emissions of pollutants should
meet the relevant requirements shown in Table D.1.9.1.2 When an incinerating method is used to treat waste PV modules or parts of them, the emissions
of pollutants should meet the relevant requirements shown in Table D.1.9.1.3 Waste water and liquid produced in the process of treatment shall be disposed, and the emission
of pollutant should meet the relevant requirements shown in Table D.1.9.2 Glass
9.2.1 In the treatment process of thermal decomposition of glass, waste gas treatment system shall be
employed to control the amount of impurity in waste gas. Any contaminants/pollutants produced shou
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