FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 24252
ISO/TC 255
Biogas systems — Non-household and
Secretariat: SAC
non-gasification
Voting begins on:
20210903
Installations de méthanisation — Non domestique et sans
gazéification
Voting terminates on:
20211029
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO
ISO/FDIS 24252:2021(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. ISO 2021
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ISO/FDIS 24252:2021(E)
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ISO/FDIS 24252:2021(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................vi

Introduction ..............................................................................................................................................................................................................................vii

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Abbreviated terms .............................................................................................................................................................................................. 2

5 Guide for reading this document ......................................................................................................................................................... 2

6 Safety principles ................................................................................................................................................................................................... 3

7 Safety studies ........................................................................................................................................................................................................... 4

7.1 General ........................................................................................................................................................................................................... 4

7.2 Risk assessment and evaluation .............................................................................................................................................. 4

7.2.1 Risk assessment construction, startup and maintenance .......................................................... 4

7.2.2 HAZOP/HAZID ................................................................................................................................................................... 4

7.3 Explosion protection document (EPD) .............................................................................................................................. 5

7.4 Environmental requirements ..................................................................................................................................................... 5

8 General design requirements ................................................................................................................................................................. 6

8.1 Materials and structures ......... ........................................................................................................................................................ 6

8.1.1 General...................................................................................................................................................................................... 6

8.1.2 Materials ................................................................................................................................................................................. 6

8.1.3 Structures, weight and stability calculations .......................................................................................... 7

8.1.4 Use of used materials and equipment ........................................................................................................... 7

8.2 Process system facilities ................................................................................................................................................................. 7

8.2.1 General...................................................................................................................................................................................... 7

8.2.2 Gas-side part of the system ..................................................................................................................................... 7

8.2.3 Cooling systems ................................................................................................................................................................ 8

8.3 Pressure protection ............................................................................................................................................................................ 8

8.4 Safety distances ...................................................................................................................................................................................... 9

8.5 Electronic monitoring of the process ...............................................................................................................................11

8.5.1 General...................................................................................................................................................................................11

8.5.2 Monitoring of the process .....................................................................................................................................11

8.6 Buildings and building services ............................................................................................................................................12

8.6.1 General...................................................................................................................................................................................12

8.6.2 Gas detection and electronic monitoring inside buildings .......................................................12

8.6.3 Ventilation ..........................................................................................................................................................................13

8.7 Noise protection..................................................................................................................................................................................14

8.8 Odour prevention ..............................................................................................................................................................................14

8.9 Soil and surface water protection ........................................................................................................................................14

8.10 Condensate and particle removal ........................................................................................................................................15

8.11 Storage of hazardous substances .........................................................................................................................................15

8.11.1 Storage hazardous substances in general ...............................................................................................15

8.12 Facilities at power failure ...........................................................................................................................................................15

8.13 Air pollution control devices for removal of superfluous biogas (flares, thermal

oxidizers gas, etc.) .............................................................................................................................................................................16

8.14 Unwanted venting and discharges of hazardous gases .....................................................................................17

8.15 Flame protection and mitigation ..........................................................................................................................................17

8.16 Fire-fighting and extinguishing .............................................................................................................................................17

8.17 Earthing and lightning protection .......................................................................................................................................18

8.18 Emergency routing ...........................................................................................................................................................................18

8.19 Anticollision ..........................................................................................................................................................................................18

8.20 Access control .......................................................................................................................................................................................18

8.21 Electrical, instrumentation and process control ....................................................................................................18

9 Biogas pipelines for untreated biogas ........................................................................................................................................19

9.1 General ........................................................................................................................................................................................................19

9.2 Materials ....................................................................................................................................................................................................19

9.3 Civil design...............................................................................................................................................................................................20

9.4 Removal of moisture and contaminants ........................................................................................................................20

10 Technical specifications and requirements biogas production........................................................................20

10.1 General ........................................................................................................................................................................................................20

10.2 Biomass supply and storage .....................................................................................................................................................21

10.3 Desulphurization ................................................................................................................................................................................21

10.4 Biogas buffer ..........................................................................................................................................................................................21

10.5 Storage, removal and stabilizing digestate ..................................................................................................................21

10.6 Specific attention points and requirements landfill sites ...............................................................................22

10.7 Specific requirements additional to Clause 8 ............................................................................................................22

10.7.1 Materials and structures ........................................................................................................................................22

10.7.2 Equipment, pipes, valves and other process system facilities ...............................................23

10.7.3 Pressure protection ....................................................................................................................................................23

10.7.4 Foam ........................................................................................................................................................................................23

10.7.5 Safety distances .............................................................................................................................................................24

10.7.6 Electronic monitoring of the process ..........................................................................................................24

10.7.7 Buildings and building services .......................................................................................................................24

10.7.8 Noise protection ............................................................................................................................................................24

10.7.9 Soil and surface water protection ..................................................................................................................24

10.7.10 Condensate and particle removal ...................................................................................................................25

10.7.11 Storage of hazardous substances....................................................................................................................25

10.7.12 Facilities at power failure ......................................................................................................................................25

10.7.13 Air pollution control devices for removal of superfluous biogas (flares,

thermal oxidizers gas etc.)....................................................................................................................................25

10.7.14 Venting ...................................................................................................................................................................................25

10.7.15 Flame protection and mitigation ....................................................................................................................25

10.7.16 Firefighting and extinguishing ..........................................................................................................................25

10.7.17 Earthing and lightning protection .................................................................................................................26

10.7.18 Emergency routing ........................................................................................................................................... ...........26

10.7.19 Anticollision ....................................................................................................................................................................26

10.7.20 Electrical, instrumentation & process control ....................................................................................26

11 Technical specifications and requirements biogas treatment, CHP, upgrading and

liquefaction .............................................................................................................................................................................................................26

11.1 General ........................................................................................................................................................................................................26

11.2 Desulphurization ................................................................................................................................................................................26

11.3 Biogas upgrading and liquefaction .....................................................................................................................................27

11.4 Process system facilities ..............................................................................................................................................................27

11.4.1 General...................................................................................................................................................................................27

11.4.2 Gas-side part of the system ..................................................................................................................................27

11.4.3 Cooling systems .............................................................................................................................................................27

11.5 Specific requirements additional to Clause 8 ............................................................................................................28

11.5.1 Materials and structures ........................................................................................................................................28

11.5.2 Pressure protection ....................................................................................................................................................28

11.5.3 Safety distances .............................................................................................................................................................28

11.5.4 Electronic monitoring of the process ..........................................................................................................28

11.5.5 Buildings and building services .......................................................................................................................28

11.5.6 Noise protection ............................................................................................................................................................28

11.5.7 Soil protection .................................................................................................................................................................28

11.5.8 Condensate and particle removal ...................................................................................................................29

11.5.9 Storage of hazardous substances....................................................................................................................29

11.5.10 Facilities at power failure ......................................................................................................................................30

11.5.11 Air pollution control devices for removal of superfluous biogas (flares,

thermal oxidizers gas etc.)....................................................................................................................................30

11.5.12 Venting ...................................................................................................................................................................................30

iv © ISO 2021 – All rights reserved
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ISO/FDIS 24252:2021(E)

11.5.13 Flame protection and mitigation ....................................................................................................................30

11.5.14 Fire-fighting and extinguishing ........................................................................................................................30

11.5.15 Earthing and lightning protection .................................................................................................................30

11.5.16 Emergency routing ........................................................................................................................................... ...........30

11.5.17 Anticollision ....................................................................................................................................................................30

11.5.18 Electrical, instrumentation & process control ....................................................................................30

12 Construction and testing ...........................................................................................................................................................................31

12.1 General ........................................................................................................................................................................................................31

12.2 Construction ...........................................................................................................................................................................................31

12.2.1 Safety during construction ...................................................................................................................................31

12.2.2 Prefabrication ..................................................................................................................................................................31

12.2.3 Construction on site ...................................................................................................................................................31

12.3 Testing and commissioning.......................................................................................................................................................31

12.4 Startup .......................................................................................................................................................................................................32

12.5 Requirements for commissioning and start-up of specific systems ......................................................32

12.5.1 Biogas production systems ..................................................................................................................................32

12.5.2 Biogas treatment, CHP, upgrading and liquefaction systems .................................................32

13 Operations and maintenance ...............................................................................................................................................................32

13.1 General ........................................................................................................................................................................................................32

13.2 Supplier of the biogas system .................................................................................................................................................33

13.3 System owner ........................................................................................................................................................................................33

13.4 Emergency plan ...................................................................................................................................................................................34

13.5 Service technician ..............................................................................................................................................................................35

13.6 Requirements for commissioning and start-up of specific systems ......................................................35

13.6.1 Biogas production systems ..................................................................................................................................35

13.6.2 Biogas treatment, CHP, upgrading and liquefaction systems .................................................35

13.7 Requirements for shut-down of biogas system .......................................................................................................36

Annex A (informative) Explanation to the scope ..................................................................................................................................37

Annex B (informative) Biogas characteristics, processes and classifications ........................................................40

Annex C (informative) Guidelines to prevent risks from gases and explosive atmospheres

in buildings ..............................................................................................................................................................................................................48

Bibliography .............................................................................................................................................................................................................................50

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

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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

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iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 255 Biogas.

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.
vi © ISO 2021 – All rights reserved
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ISO/FDIS 24252:2021(E)
Introduction
0.1 General

The technical committee on biogas (ISO/TC 255) was established in 2011 in order to:

— provide liberalization and facilitation for international trade of biogas systems;

— contribute to international cooperation on technical regulations, standards and assessment

procedures;

— curb discriminatory technical requirements as the main form of trade protectionism; and

— reduce and eliminate the technical barriers for international trade of biogas systems.

This document about biogas systems is applicable for biogas production by anaerobic digestion, biogas

conditioning, biogas upgrading and biogas utilization. The main purpose of this document is the safe

operation of biogas systems without damaging the environment.
The availability of a standard for biogas systems is necessary in order to:
— ensure that biogas systems are built, operated and ma
...

ISO/FDIS 24252

Biogas systems -- Non-household and non-gasification

Biogas systems -- Non-household and non-gasification

Installations de méthanisation -- Non domestique et sans gazéification

General Information

Buy Standard

Standards Content (sample)

Questions, Comments and Discussion

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Biogas systems -- Non-household and non-gasification

Installations de méthanisation -- Non domestique et sans gazéification

General Information

Buy Standard

Standards Content (sample)

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

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