OTIF/RID/CE/GTP/2022-B
21 December 2022
Original: German
TO THE MEMBER STATES AND ASSOCIATE MEMBERS OF OTIF
AND TO REGIONAL ORGANISATIONS WHICH HAVE ACCEDED TO COTIF
_________________________________________________________________
Final report of the 15th session of the RID Committee of Experts’
standing working group
(Berne/hybrid, 23 and 24 November 2022)
OTIF/RID/CE/GTP/2022-B
Table of contents
Para- Page
graphs
ITEM 1: Approval of the agenda 1 3
ITEM 2: Presence 2-3 3
ITEM 3: Interpretation of RID 4-8 3
ITEM 4: Proposals to amend RID 9 - 26 4
A. Pending issues 9 - 25 4
B. New proposals 26 6
ITEM 5: Report of the working group on tank and vehicle technology 27 - 29 6
ITEM 6: Harmonisation of RID and SMGS Annex 2 30 6
ITEM 7: Information from the European Union Agency for Railways (ERA) 31 - 32 6
ITEM 8: Any other business 33 - 40 6
Annex I: Texts adopted by the 15th session of the RID Committee of Experts' standing working
group
Annex II: List of participants
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OTIF/RID/CE/GTP/2022-B
ITEM 1: Approval of the agenda
Document: RID-22010-CE-GTP15 (Secretariat)
1. The provisional agenda contained in calling notice RID-22010-CE-GTP15 dated 19 September
2022 was adopted.
ITEM 2: Presence
2. The following RID Contracting States took part in the work of the 15th session of the standing
working group (see also Annex II):
Austria, Belgium, Denmark, Finland, France, Germany, Italy, Latvia, Luxembourg, Nether-
lands, Poland, Spain, Sweden, Switzerland, Türkiye and United Kingdom.
The European Union (European Commission and the European Union Agency for Railways
(ERA)) was also represented.
The following non-governmental international organisations were represented: the European
Chemical Industry Council (Cefic), the International Association of Dangerous Goods Safety
Advisers (IASA), the International Union of Railways (UIC), the International Union of Wagon
Keepers (UIP), the International Union of Combined Road-Rail Transport Companies (UIRR)
and the Association of the European Rail Industry (UNIFE).
3. At the 6th session of the standing working group, Ms Caroline Bailleux (Belgium) was elected
as Chair until further notice. At the 10th session, Mr Othmar Krammer (Austria) was elected as
Deputy Chair until further notice.
ITEM 3: Interpretation of RID
Placarding of containers, bulk containers, MEGCs, tank-containers and portable tanks
Informal document: INF.1 (IASA)
4. In his informal document, the representative of IASA proposed to include a Note in RID 5.3.1.2,
which deals with the affixing of placards to large containers, bulk containers, MEGCs, tank-
containers and portable tanks, to clarify that this sub-section also applies to swap bodies.
5. He explained that according to ADR 5.3.1.5, placards only have to be affixed to swap bodies
containing substances of Class 1 or 7 that are only carried by road. The aim of the proposal
was not to align with ADR, but to clarify RID.
6. The representative of Austria explained that the Notes in RID 5.2.2, which equate small con-
tainers with packages for the purposes of labelling, and in ADR 5.3.1.2, which exempt swap
bodies carried exclusively by road from having to bear placards, were of a constitutive nature.
However, IASA’s proposed Note in 5.3.1.2 would not be of a constitutive nature, because it
would regulate something that already applied anyway and could be derived from the defini-
tions in 1.2.1.
7. The representatives of UIRR, UIC and CEFIC were also of the view that the current text was
sufficient and did not cause any problems.
8. The standing working group asked the Secretariat to submit a text to the next session of the
standing working group setting out a corresponding interpretation of RID that could be pub-
lished on OTIF’s website once the standing working group had approved it.
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OTIF/RID/CE/GTP/2022-B
ITEM 4: Proposals to amend RID
A. Pending issues
Draft list of corrections to the notification texts OTIF/RID/NOT/2023 of 1 July 2022
Document: OTIF/RID/CE/GTP/2022/11 (Secretariat)
9. Document 2022/11 from the Secretariat contained a list of corrections of errors in the notifica-
tion texts OTIF/RID/NOT/2023, which had been noticed when finalising the 2023 edition of
RID.
10. The standing working group instructed the Secretariat to publish this list of corrections, which
included an additional amendment to 1.1.4.7.1 of the French version, in a depositary notifica-
tion. The Secretariat was asked to inform the UNECE Secretariat that the amendment to
1.1.4.7.1 had been adopted as a correction because it is an obvious translation error of the
original English text.
112th Session of WP.15 (Geneva, 8 - 11 November 2022)
Document: OTIF/RID/CE/GTP/2022/12 (Secretariat)
11. The standing working group noted document 2022/12 submitted by the Secretariat, which re-
produced the most important discussions at the last session of WP.15 that might also be of
interest to the standing working group.
12. Following the example of ADR, Member States were asked, if they so wish, to send the Sec-
retariat a link to their national translation of RID so that it could be published on OTIF’s website
(see paragraph 20 of document 2022/12). The representatives of Belgium and the Netherlands
said they were prepared to send the Secretariat a link to the Dutch version.
13. For RID, the standing working group also adopted the clarification adopted by WP.15 for the
transitional measure in 1.6.4.59 (see paragraphs 27 to 29 of document 2022/12) (see Annex
I). Until this amendment entered into force (1 January 2025), it asked the Secretariat to publish
on OTIF’s website the interpretation that the provisions of Chapter 4.4 in force until 31 Decem-
ber 2022 apply to tank-containers made of fibre-reinforced plastics that continue to be used in
accordance with the transitional measure in 1.6.4.59.
14. In view of the fact that in RID, net explosive mass does not have the same importance as in
ADR, the standing working group did not consider it necessary to publish on OTIF’s website
the interpretation that the quantities of pyrotechnic substances should be taken into account
when calculating the net explosive mass (see paragraphs 43 and 44 of document 2022/12).
15. The standing working group did not consider it necessary to include a new standing agenda
item on the subject of sustainable development goals and the circular economy (see para-
graphs 50 to 56 of document 2022/12). However, in new proposals, the respective authors
could specifically point out any links to these topics.
16. The Secretariat of OTIF informed the standing working group that it would also check whether
it would be possible to obtain an Arabic translation of the 2023 edition of RID (see paragraph
58 of document 2022/12). This translation might be of use to the Arabic-speaking RID Con-
tracting States and might encourage the accession of Arabic-speaking states interested in ac-
ceding to COTIF (e.g. GCC States).
17. The representative of Spain pointed out that for RID, a lasting solution would also have to be
found with regard to the translation of amendments that had to be made every two years, and
for the preparation of consolidated versions.
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OTIF/RID/CE/GTP/2022-B
Declarations of occurrences involving dangerous goods
Document: OTIF/RID/CE/GTP/2022/9 (Belgium)
Informal document: INF.3 (ERA)
18. In document 2022/9, the representative of Belgium wished to initiate a discussion on ERA’s
proposed alignment of the criteria for triggering reports in the future CSM ASLP Regulation on
the one hand and in RID 1.8.5.3 on the other (see ERA’s informal document INF.8 for the
autumn session of the RID/ADR/ADN Joint Meeting). She also welcomed the principle that
data concerning dangerous goods can be entered into the ISS (Information Sharing System).
19. Several delegations questioned the purpose of the extensive data collection planned by ERA.
They only saw a few, limited advantages in harmonising the two systems of reporting and
preferred to maintain the existing system under RID 1.8.5, although they did not rule out pos-
sible improvements to the provisions if there were any proven legal gaps.
20. The representative of Germany also doubted whether different versions of reports were of any
use (simple report/detailed report) and criticised the format of a simple form with tick boxes
that did not include any further explanations. He also questioned whether there was any guar-
antee that the data collected would be anonymous.
21. The representative of Austria drew attention to the different objectives of the two reporting
systems. The existing RID system was about assessing and improving the regulations where
necessary, whereas the data in the system planned by ERA would also be used for risk as-
sessment and to assess undertakings. He was also critical of extending the ERA system to
other modes of transport, as other modes would have a quite different target audience.
22. UIC pointed out that the available data showed that occurrences relating to the carriage of
dangerous goods from the time of acceptance for carriage to the time of delivery to the con-
signee affected both train movements and stops made necessary by transport conditions. Less
than 2% of occurrences came under RID 1.8.5. Dangerous goods were involved in about 8%,
but did not meet the criteria of 1.8.5. A further 10% could be classified as safety-relevant oc-
currences, as the risk of a product leaking was significant from the outset. The remaining 80%
should be regarded as non-safety-relevant occurrences that affected the “quality of the con-
signment”.
23. In view of the different expectations of the competent authorities and the economic and tech-
nical constraints on railway undertakings, UIC was of the view that the purpose of RID 1.8.5
should be examined before deciding on the form and content of the data collection. This view
did not call into question the declared aim of harmonising RID 1.8.5 with European railway
legislation.
24. The representative of ERA explained that the purpose of collecting accident data was a kind
of collective learning in order to obtain a better understanding of the causes of accidents. In
order to avoid duplication, harmonised data collection was important. A uniform reporting sys-
tem would be advantageous for all parties concerned. He underlined that the new CSM ASLP
Regulation takes EU data protection legislation into account. He invited delegates to the next
coordination meeting organised by ERA on the reporting of occurrences in the transport of
dangerous goods, which would take place on 15 December 2022.
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OTIF/RID/CE/GTP/2022-B
25. The Chair pointed out that there would be a new system of reporting under the CSM ASLP
Regulation. The important question to be asked by the standing working group and the
RID/ADR/ADN Joint Meeting was whether and how a link should be established between the
existing and the newly proposed system. In her view, a situation with two independent systems
of reporting would be unfortunate. The bodies concerned should work together step-by-step to
find a solution.
B. New proposals
26. No documents were submitted for this agenda item.
ITEM 5: Report of the working group on tank and vehicle technology
27. The Chairman of the working group on tank and vehicle technology, Mr Kogelheide, presented
the results of the 19th session of the working group, as set out in report OTIF/RID/CE/GTT/
2022-A, which had taken place on 22 November in the form of a hybrid meeting,
28. With regard to the finding that DAC met the requirements of special provision TE 25 (a) by
virtue of its construction, the representative of the Netherlands was of the view that a further
discussion on maintaining one of the measures set out in paragraphs (b) to (d) of special pro-
vision TE 25 for very dangerous substances was essential (see paragraphs 29 to 32 of report
OTIF/RID/CE/GTT/2022-A).
29. The standing working group was informed that an extract from the draft report of the working
group on tank and vehicle technology would be submitted to the ERA workshop on 1 December
2022.
ITEM 6: Harmonisation of RID and SMGS Annex 2
30. No documents were submitted for this agenda item.
ITEM 7: Information from the European Union Agency for Railways (ERA)
Informal documents: INF.2 and INF.2/Add.1 (ERA)
31. The standing working group noted the information contained in ERA’s informal documents
INF.2 and INF.2/Add.1.
32. With regard to paragraphs 20 and 21 (Progress on the development of the Inland TDG Risk
Management Platform), the representative of ERA referred to the risk management platform
web application at http://tdg-dev0.westeurope.cloudapp.azure.com/ and a webinar on the risk
management platform at https://www.youtube.com/watch?v=2Xi40Wa-Tao&t=2339s. Ques-
tions regarding the platform could be addressed to
[email protected].
ITEM 8: Any other business
Recommendation on involving stakeholders in OTIF’s work
Document: OTIF/RID/CE/GTP/2022/10 (Secretariat)
33. Document 2022/10 submitted by the Secretariat reproduced a “Recommendation on involving
stakeholders in OTIF’s work” adopted by OTIF’s ad hoc Committee on Legal Affairs and Inter-
national Cooperation. The Secretariat asked whether and how this recommendation should
also be implemented for the RID Committee of Experts.
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OTIF/RID/CE/GTP/2022-B
34. The standing working group was of the view that the past had shown that the current provisions
of the Rules of Procedure, and the RID Committee of Experts' decision to invite those organi-
sations and associations to the meetings of the RID Committee of Experts that are also ap-
proved for the RID/ADR/ADN Joint Meeting, were sufficient. However, OTIF’s website could
contain a list of the international associations and organisations that have been accredited so
far and a form for those stakeholders who do not currently participate in the work of the RID
Committee of Experts and its working groups and who do not wish to apply for accreditation at
the RID/ADR/ADN Joint Meeting. When a form was submitted, the standing working group
should decide at its next meeting whether to accredit these stakeholders.
Tribute to Ms Valérie Blanchard
35. The representative of Switzerland informed the standing working group that she would be mov-
ing from the Federal Office of Transport to the Federal Roads Office and would in future be
dealing with the regulations on the carriage of dangerous goods by road. Although she would
no longer be taking part in the meetings of the RID Committee of Experts and its working
groups, she would continue to represent Switzerland at the RID/ADR/ADN Joint Meeting and
the UN Sub-Committee of Experts on the Transport of Dangerous Goods.
36. The standing working group thanked her warmly for her valuable contributions to the work of
the RID Committee of Experts and wished her every success in her new field of activity.
Thanks
37. The Chair thanked the Secretariat for the good preparation of the meeting. She thanked the
interpreters for their important contribution to the successful running of the meeting. Lastly,
she thanked the delegations for their active participation in the discussions.
38. The deputy Chair thanked the Chair for her excellent conduct of the meeting. He included in
his thanks the Chairman of the working group on tank and vehicle technology, who had confi-
dently guided the discussions on the new digital automatic coupling.
Next session
39. The 16th session of the RID Committee of Experts' standing working group will provisionally be
held in the week from 20 to 24 November 2023. The deadline for the submission of documents
to the meeting of the standing working group is 6 October 2023.
40. The Secretariat expressed the wish to return to the pre-pandemic method of working and to
hold the meetings of the standing working group in an RID Contracting State. Representatives
of states wishing to invite delegates to a session of the RID Committee of Experts were asked
to contact the Secretariat.
__________
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OTIF/RID/CE/GTP/2022-B
Annex I
Texts adopted by the 15th session of the RID Committee of Experts' standing working
group
Draft amendments to RID for entry into force on 1 January 2025
Chapter 1.6
1.6.4.59 Amend to read as follows:
“1.6.4.59 Fibre-reinforced plastics tank-containers constructed before 1 July 2033 in accord-
ance with the requirements of Chapter 6.9 in force up to 31 December 2022, may still
be used, in accordance with the provisions of Chapter 4.4 in force up to 31 December
2022.”
[Reference document: OTIF/RID/CE/GTP/2022/12]
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OTIF/RID/CE/GTP/2022-B
Annex II
Liste des participants
Teilnehmerliste
List of participants
I. États parties au RID/RID-Vertragsstaaten/RID Contracting States
Allemagne/Deutschland/Germany
Mr Alfons Hoffmann
Ms Linda Rathje-Unger
Mr Luciano Inama
Mr Andreas Würsig
Autriche/Österreich/Austria
Mr Othmar Krammer
Belgique/Belgien/Belgium
Ms Caroline Bailleux
Danemark/Dänemark/Denmark
Mr Carsten Nielsen
Espagne/Spanien/Spain
Mr Luis del Prado Arévalo
Ms Silvia García Wolfrum
Ms Francisca Rodríguez Guzmán
Finlande/Finnland/Finland
Mr Jouni Karhunen
France/Frankreich/France
Ms Ariane Roumier
Italie/Italien/Italy
Ms Mariella di Febbo
Mr Benedetto Legittimo
Mr Salvatore Ullo
Mr Mattia Madrigale
Mr Rocco Cammarata
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OTIF/RID/CE/GTP/2022-B
Mr Valentino Rinaldi
Lettonie/Lettland/Latvia
Mr Dainis Lācis
Mr Juris Pakalns
Mr Valerijs Stuppe
Luxembourg/Luxemburg/Luxembourg
Mr Iliass Zerktouni
Pays-Bas/Niederlande/Netherlands
Mr Henk Langenberg
Ms Sam van de Snepscheut
Pologne/Polen/Poland
Mr Krzysztof Irmiński
Royaume-Uni/Vereinigtes Königreich/United Kingdom
Ms Anita Moinizadeh
Mr Arne Bale
Suède/Schweden/Sweden
Mr Henric Strömberg
Suisse/Schweiz/Switzerland
Ms Valérie Blanchard
Türkiye
Mr Bülent Eyyüpoğlu
Mr Saim Kemal Erol
Mr Nejmi Ergücü
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OTIF/RID/CE/GTP/2022-B
II. Organisations internationales gouvernementales/
Internationale Regierungsorganisationen/International governmental organisations
Union européenne/Europäische Union/European Union
Commission européenne/Europäische Kommission/ European Commission
Mr Roberto Ferravante
Mr Mircea Ionescu
Agence de l’Union européenne pour les chemins de fer /Eisenbahnagentur der Europäischen
Union / European Union Agency for Railways (ERA)
Mr Francesco Rotoli
Mr Oscar Martos
Ms Ellen Rogghé
III. Organisations internationales non gouvernementales
Internationale Nichtregierungsorganisationen
International non-governmental organisations
Cefic
Mr Jörg Roth
Mr Marc Frederic Schroeder
IASA
Mr Ernst Winkler
UIC
Mr Jean-Georges Heintz
UIP
Mr Rainer Kogelheide
Mr Oliver Behrens
Mr Philippe Laluc
UIRR
Mr Ullrich Lück
IV. Secrétariat/Sekretariat/Secretariat
Mr Jochen Conrad
Ms Katarina Burkhard
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OTIF/RID/CE/GTP/2022-B
V. Interprètes/Dolmetscher/Interpreters
Mr David Ashman (OTIF)
Mr Werner Küpper
Ms Laura Keller
__________
12
OTIF/RID/CE/GTT/2022-A
15 December 2022
Original: German
TO THE MEMBER STATES AND ASSOCIATE MEMBERS OF OTIF AND
TO REGIONAL ORGANISATIONS WHICH HAVE ACCEDED TO COTIF
_______________________________________________________________
Final report of the 19th session of the RID Committee of Experts’
working group on tank and vehicle technology
(Berne/hybrid, 22 November 2022)
OTIF/RID/CE/GTT/2022-A
1. The 19th session of the RID Committee of Experts’ working group on tank and vehicle technol-
ogy was held as a hybrid meeting in Berne on 22 November 2022. Delegates were able to
attend in person or take part remotely.
2. The following RID Contracting States took part in the work of the 19th session of the working
group on tank and vehicle technology (see also Annex I):
Austria, Belgium, Finland, France, Georgia, Germany, Italy, Latvia, Luxembourg, Netherlands,
Spain, Switzerland, Türkiye and United Kingdom.
The European Commission and the European Union Agency for Railways (ERA) were also
represented.
The following non-governmental international organisations were represented: the European
Chemical Industry Council (Cefic), the International Union of Railways (UIC), the International
Union of Wagon Keepers (UIP) and the International Union of Combined Road-Rail Transport
Companies (UNIFE).
Mr Stefan Hagenlocher (hwh Gesellschaft für Transport- und Unternehmensberatung mbH)
and Mr Christian Radewagen (Voith Group) were invited as guests.
3. As decided at the 44th session of the RID Committee of Experts (see report OTIF/RID/CE/2007-
A, paragraph 108), Mr Rainer Kogelheide (UIP) is the Chairman of this working group until
further notice.
ITEM 1: Approval of the agenda
Document: RID-22009-CE (Secretariat)
4. The provisional agenda contained in circular letter RID-22009-CE dated 19 September 2022
was adopted.
5. The Secretary General of OTIF, Mr Wolfgang Küpper, opened this session of the working
group. He recalled the long history of the working group, whose work had led to enormous
safety gains in the carriage of dangerous goods by rail. He welcomed the intended introduction
of digital automatic coupling, which represented an important technological advance for rail
transport and would significantly increase the competitiveness of rail as a mode of transport.
Even if the new technology could not be compared with the existing technology in terms of
safety and parts of the technical vehicle regulations contained in RID are adapted to the current
state of the art, falling below the existing safety level should be avoided. Although the overrid-
ing of buffers could no longer occur, other risks could arise as a result of the new technology,
and these risks would certainly have to be eliminated in advance.
ITEM 2: Extra-large tank-containers
Informal document: OTIF/RID/CE/GTT/2022/INF.2 (Germany)
6. In his informal document INF.2, the representative of Germany informed the meeting that the
research project on the effects of surge movements in rail traffic would be awarded in 2023.
7. The representative of Germany explained that the research project was intended to provide a
fundamental understanding of surge behaviour. In particular, various conditions, such as the
geometry of the route, the speed, the tank design type, viscosity of the substance and the
interaction of transverse to longitudinal surge would be considered. The work was expected to
take two years, so the result could be presented at the beginning of 2025.
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OTIF/RID/CE/GTT/2022-A
8. Delegations were again asked to indicate quickly which further investigations they wished to
be included in this research work. The representative of Cefic said that he would contact the
German delegation in this regard.
Informal document: OTIF/RID/CE/GTT/2022/INF.4 (Cefic)
9. The representative of Cefic introduced his informal document INF.4, which reported on expe-
rience with using extra-large tank-containers. He explained that the tank-containers used for
the transport of dangerous goods were designed for 3g.
10. The Chairman was of the view that for hump shunting, it had to be ensured that the container
carrying wagons were equipped with L buffers and with spigots that were also designed for 3g.
It would also have to be ensured that no acceleration values above 3g could occur.
11. The working group agreed that this value should be prescribed in RID 6.8.2.1.2. The repre-
sentatives of Cefic and UIP said they were prepared to submit a proposal to this effect to the
next session of the RID/ADR/ADN Joint Meeting.
ITEM 3: Definition of protective aims in RID replacing the provisions of 6.8.2.1.29
(minimum distance between the headstock plane and the shell) and special
provisions TE 22 (energy absorption elements) and TE 25 (protection against
overriding)
12. The working group decided not to formulate definitions of protective aims in RID to replace the
provisions of 6.8.2.1.29 and special provisions TE 22 and TE 25 until it was known which reg-
ulations would contain the corresponding technical provisions.
ITEM 4: Requirements for wagons equipped with digital automatic coupling or re-
quirements for these couplings (see report OTIF/RID/CE/GTP/2022-A, para-
graphs 23 to 27).
13. Mr Radewagen from Voith introduced the new digital automatic coupling (DAC) technology.
He pointed out that in contrast to wagons with buffers, where the energy is absorbed on both
sides, the energy dissipation of wagons with DAC took place in the middle, in the so-called
UIC pocket. He explained that when the DAC is coupled, the claw of one wagon goes under
the front plate of the next wagon and can also compensate for a difference in height between
the two adjacent wagons.
14. In order to be able to meet the requirements of special provision TE 22 applicable to gas tank-
wagons for wagons equipped with DAC, he proposed to use DAC AX, i.e. standard DAC with
an elastic (reversible) energy absorption capacity of 75 kJ and an energy absorption element
with a plastic (irreversible) energy absorption capacity of 600 kJ.
15. In response to a question, Mr Radewagen explained that the previous requirements for the
energy absorption capacity of A buffers, C buffers and long-stroke buffers had been carried
over to the requirements for DAC A, DAC C and DAC L.
16. The Chairman explained that the so-called UIC pocket had already been taken into account
on most freight wagons, so that the wagons could be fitted with central buffer couplings at a
later date. For newer wagons already built in accordance with the requirements of the TSI
WAG, this free space was not available, which made retrofitting with DAC somewhat more
complex.
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OTIF/RID/CE/GTT/2022-A
Informal documents: OTIF/RID/CE/GTT/2022/INF.1 (ERA)
OTIF/RID/CE/GTT/2022/INF.3 (Germany)
17. The working group discussed ERA’s informal document INF.1, which reflected the discussions
at ERA’s workshop on 12 October 2022. In so doing, it took into account the protective aims
set out in Germany’s informal document INF.3, which had been established at previous meet-
ings of the working group.
RID 6.8.2.1.29 – Minimum distance between the buffer beam and the tank
18. 6.8.2.1.29 requires a minimum distance of 300 mm between the headstock plane and the most
protruding point at the shell extremity on tank-wagons.
19. The representative of ERA explained that this provision was intended to prevent the buffer
from penetrating the tank in the event of the buffers overriding. As the overriding of buffers
could be ruled out with DAC, this gap was no longer necessary. In addition, the buffer beam
that used to be on wagons would no longer appear on new-build wagons because the transfer
of energy would take place in the middle.
20. Those participants who took the floor saw no need to maintain this requirement for wagons
equipped with DAC because the overriding of buffers would not occur.
RID 6.8.3.1.6 – C buffers on gas tank-wagons
21. Tank-wagons and battery-wagons for the carriage of gases must be fitted with buffers with a
minimum energy absorption capacity of 70 kJ (C buffers). In the past, this requirement was
carried over into RID from a UIC leaflet. C buffers could be dispensed with if the wagon is
already equipped with an energy absorption element in accordance with special provision
TE 22.
22. The representative of UIP pointed out that the energy absorption capacity of a DAC C (140 kJ),
which was the equivalent of C buffers, was achieved by a hydraulic element, but it was very
expensive to maintain. In addition, the effectiveness of the hydraulic element depended very
much on the impact speed.
23. The working group was of the view that it would make sense also to stipulate DAC AX for the
few tank-wagons and battery-wagons for the carriage of gases for which energy absorption
elements are not prescribed at present, as this solution was more cost-effective and in the
past, the industry had already chosen energy absorption elements instead of C buffers.
24. The participants who took the floor also agreed with this proposal from a cost point of view.
Special provision TE 22 – Energy absorption capacity of 800 kJ at each end of the wagon
25. The Chairman explained that the UIC pocket allowed for DAC AX with a total energy absorption
capacity of 675 kJ (see paragraph 14). Owing to the limited space, it was not possible to have
a greater energy absorption capacity without having to impinge on the construction of the chas-
sis.
26. The representative of UIP was of the view that the energy absorption capacity of 800 kJ for
conventional wagons would only be achieved in ideal cases. On curves, only a considerably
lower value could be achieved because the main load is absorbed by a single buffer.
27. The representative of Germany reminded the meeting that in the past, when specifying re-
quirements, the meeting had always been guided by the components available on the market.
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OTIF/RID/CE/GTT/2022-A
28. Those participants who spoke were of the view that a DAC AX should be required for the
carriage of those substances to which special provision TE 22 currently applies. The energy
absorption capacity of 125 kJ less was justifiable from a safety point of view.
Special provision TE 25 – devices to protect against the overriding of buffers
29. Special provision TE 25, which applies to tank-wagons for toxic gases and for liquids requiring
a calculation pressure of 15 or 21 bar, allows several measures to be taken to prevent over-
riding of buffers or to limit the damage caused by overriding of buffers. One of the measures
described in paragraphs (a) to (e) has to be selected. The measure in special provision TE 25
(a) requires, among other things, that overriding buffer protection devices withstand a vertical
force of 150 kN.
30. The Chairman recalled that according to Voith, DAC would achieve the required 150 kN. Fur-
thermore, safe locking of DAC up to a speed of 36 km/h is ensured. The requirement of special
provision TE 25 (a) was therefore met and all wagons equipped with DAC could be marked
“TE 25”.
31. The representative of Belgium criticised the fact that this would mean that the measures in
paragraphs (b), (c) and (d) of special provision TE 25, i.e. increasing the wall thickness of tank
ends, sandwich covers on tank ends and protective shields, would no longer be implemented
in future. She was concerned that this would reduce safety.
32. The Chairman reminded the meeting of the additional measures required in Switzerland for
the carriage of chlorine, which had resulted from risk analyses. He noted that DAC complied
with the current wording of special provision TE 25. Discussions on further measures under
paragraphs (b) to (d) of special provision TE 25 would have to take place on the basis of a
separate document. He invited those delegations that were interested to prepare such a doc-
ument.
Electrical energy supply for wagons
33. Mr Hagenlocher from the consulting firm hwh explained that the electrical energy system pro-
vided by DAC is operated with 400 V alternating current. On each wagon, this was transformed
to 48 V direct current with buffering in a battery. He specified that the European DAC Delivery
Programme (EDDP) had already defined use cases in connection with the introduction of DAC,
e.g. automatic detection of wagon order, electronic brake test, automated train integrity check.
It was clear to the developers that protection from explosions had to be ensured for dangerous
goods wagons. New operational instructions would also have to ensure that the electrical
power supply was switched off when entering filling facilities.
34. The representative of ERA reiterated that the specific risks resulting from high voltage would
be dealt with at the ERA workshop on 1 December 2022.
35. The representative of Cefic explained that his association was also dealing with the issue of
explosion protection and would submit a document on this to the next session of the working
group.
Domino effect on trains with central buffer coupling
36. The representative of the United Kingdom asked whether the domino effect observed in de-
railments in North America, in which many wagons in the train set had overturned because of
the rigid coupling, had been taken into account in the development of DAC. He explained that
these accidents had led to a revision of the design of North American couplings, which now
allow the coupler to twist or rotate reducing the transmission of torque.
5
OTIF/RID/CE/GTT/2022-A
37. The Chairman explained that the Scharfenberg coupling chosen for DAC was different from
the North American coupling. In addition, the centre of gravity of North American wagons is
higher, which results in the wagons overturning more easily.
38. Mr Radewagen from Voith explained that calculations in this respect were still being carried
out in connection with DAC. If the same risks were to arise as in North America, a torque limit
would have to be set.
ITEM 5: Any other business
39. The working group decided not yet to set a date for the next meeting of the working group.
__________
6
OTIF/RID/CE/GTT/2022-A
Annex I
Liste des participants
Teilnehmerliste
List of participants
I. États parties au RID/RID-Vertragsstaaten/RID Contracting States
Allemagne/Deutschland/Germany
Mr Alfons Hoffmann
Ms Linda Rathje-Unger
Mr Valeri Voth
Mr Luciano Inama
Mr Andreas Würsig
Mr Thomas Buder
Autriche/Österreich/Austria
Mr Othmar Krammer
Belgique/Belgien/Belgium
Ms Caroline Bailleux
Mr Luc Opsomer
Espagne/Spanien/Spain
Ms Monica Perez
Mr Ignacio Álvarez
Finlande/Finnland/Finland
Mr Jouni Karhunen
France/Frankreich/France
Ms Ariane Roumier
Mr Patrick Caillet (Magyar)
Mr Robert Stawinski (Magyar)
Géorgie/Georgien/Georgia
Mr Giorgi Katsitadze
7
OTIF/RID/CE/GTT/2022-A
Italie/Italien/Italy
Ms Mariella di Febbo
Mr Benedetto Legittimo
Ms Stefania Fabozzi
Mr Mattia Madrigale
Mr Valentino Rinaldi
Mr Andrea Giuseppe Ercole
Lettonie/Lettland/Latvia
Mr Dainis Lācis
Mr Juris Pakalns
Mr Valerijs Stuppe
Luxembourg/Luxemburg/Luxembourg
Mr Iliass Zerktouni
Pays-Bas/Niederlande/Netherlands
Mr Soedesh Mahesh
République tchèque/Tschechische Republik/Czech Republic
Ms Alena Zátopková
Royaume-Uni/Vereinigtes Königreich/United Kingdom
Ms Anita Moinizadeh
Mr Arne Bale
Suisse/Schweiz/Switzerland
Mr Claude Despont
Türkiye
Mr Bülent Eyyüpoğlu
Mr Saim Kemal Erol
Mr Nejmi Ergücü
II. Organisations internationales gouvernementales/
Internationale Regierungsorganisationen/International governmental organisations
Commission européenne/Europäische Kommission/European Commission
Mr Roberto Ferravante
8
OTIF/RID/CE/GTT/2022-A
Agence de l’Union européenne pour les chemins de fer/Eisenbahnagentur der Europäischen
Union/European Union Agency for Railways(ERA)
Mr Oscar Martos
III. Organisations internationales non gouvernementales
Internationale Nichtregierungsorganisationen
International non-governmentalorganisations
Cefic
Mr Marc Frederic Schroeder (BASF)
UIC
Mr Jean-Georges Heintz
Mr Joost Overdijkink
UIP
Mr Rainer Kogelheide (Président/Vorsitzender/Chairman) (selbstständiger Berater)
Mr Oliver Behrens (GATX)
Mr Philippe Laluc (Ermewa)
IV. Invités
Gäste
Guests
Mr Stefan Hagenlocher (hwh Gesellschaft für Transport- und Unternehmensberatung mbH)
Mr Christian Radewagen (Voith Group)
VI. Secrétariat/Sekretariat/Secretariat
Mr Jochen Conrad (OTIF)
Ms Katarina Burkhard (OTIF)
VII. Interprètes/Dolmetscher/Interpreters
Mr David Ashman (OTIF)
Ms Laura Keller
__________
9
Saatja: Jochen Conrad <
[email protected]>
Saadetud: 21.12.2022 11:43
Teema: 15th session of the RID Committee of Experts' standing working
group and 19th session of the working group on tank and vehicle
technology; final reports
Ladies and Gentlemen,
Please find attached the final reports of the 19th session of the working
group on tank and vehicle technology and the 15th session of the RID
Committee of Experts' standing working group, which were held from 22 to
24 November 2022 as hybrid conferences.
The corrections and additions made by the participants are highlighted in
red.
The entire OTIF Secretariat sends you best wishes for the New Year!
Kind regards,
Jochen Conrad
Head of Dangerous Goods Department
Organisation intergouvernementale pour les transports internationaux
ferroviairesZwischenstaatliche Organisation für den internationalen
EisenbahnverkehrIntergovernmental Organisation for International Carriage
by Rail
Gryphenhübeliweg 30
CH-3006 Bern/Berne
Tel: + 41 31 359 10 17
Mobile: + 41 79 555 10 17
Fax: + 41 31 359 10 11
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