LNG TASK FORCE
6 JUNE 2012
UNITED NATIONS, PALAIS NATIONS
I. Welcome & introduction of the members
1. The chairman welcomed the participants, who introduced themselves around the table.
II. Approval of the minutes of the previous meeting (Document LNG-TF-04-03)
2. No comments on the meeting minutes. The minutes are approved.
III. Approval of the agenda for today’s meeting (Document LNG-TF-05-01)
3. No comments on the agenda for today.
IV. Review of the current work
4. Would like to send the document for editorial review prior to the deadline of 6th July
5. A question from the delegate from India is raised if these meetings can be coordinated
with the GRSG and GRPE because that is when their delegates are in Europe. The
Chairman indicates that this is difficult due to the amount of meetings, most of which are
in Brussels due to the amount of work and the proximity of most of the involved
stakeholders. But he will keep in mind the request and try and coordinate these
meetings, as this one is, with the GRPE.
V. Proceeding with working on the document R110 LNG version:
6. Annex 4A. Provisions regarding the approval of the automatic valve, non-return valve,
the pressure relief valve, pressure relief device and the excess flow valve. These are all
for CNG parts exclusively
7. Annex 4B. Flexible fuel lines need to be updated so they are applicable for LNG
8. Class 5 is defined for parts in contact with a temperature lower than minus 40 degrees
Celsius so hoses for liquid gas are applicable. Mr Murray indicates that ISO does not
address this so maybe we should not create a new standard, which is agreed by the
9. Annex 4C: Provisions regarding the approval of the CNG filter. Normally this is used
after the vaporizer, so it is not necessary for LNG
10. Annex 4D. Provisions regarding the approval of the CNG (inserted) in the title Pressure
Regulator and have a separate annex for the LNG component. ‘CNG’ is added in this
Annex in various sections to identify that these provisions are for CNG only.
11. Annex 4E. Approval of Pressure and Temperature Sensors. ‘CNG’ is added to make it
clear these provisions apply to CNG and do not apply to LNG, which will be included in a
12. Annex 4F: Provisions regarding the approval of the filling unit. ‘CNG’ added to make
clear these provisions apply to CNG and not to LNG. ‘CNG’ is added throughout the
13. Annex 4G remains without change.
14. Annex 4 H: Provisions regarding the approval of the electronic control unit applies to
both CNG and LNG
15. Annex 4I: Provisions regarding the approval of LNG heat exchanger- vaporizer.
Subparts of this section are reviewed in accordance with the LNG-TF 04-02 modified.
Specific points that include extra discussion are provided below.
16. Annex 4I, 2.3: Class 5, uses -40c for all CNG products. Every part having a lower
testing temperature than -40 should still be tested in accordance with Class 5.
17. Discussion of provisions in Annex 50 Operating Temperatures are specified for LNG at -
162c referenced in the 4I text: The timing of the test was an issue discussed at ISO.
The Chairman indicates that once the low temperature is reached it is held for half an
hour. A question is raised if this provision belongs in this section on Operating
Temperatures since it is referenced throughout the R.110 regulation. Decision is made
not to add additional text in this section.
18. Discussion of Annex 4I provisions on LNG Vaporizer, and conditions that might arise if
water is in the system, which expands when it freezes and damages the vaporizer.
Glycol is not an issue because it doesn’t expand as it freezes. So the temperature is left
as it is at -40c.
19. In ISO there are other tests mentioned at pressures of 1.5 times the working pressure,
which is deemed suitable, for example, in the hydrostatic test. Provisions for 100,000
cycles is removed, as it has been done in ISO.
20. Annex 4J: Provisions regarding the approval of LNG filling receptacle. This also has
been discussed by ISO, which is not in total agreement on the various connectors
between Zodiak, JC Carter, and Parker. Mr. Murray believes adding this is premature
since it has not been finalized in ISO. Mr. Ursan indicates that the ISO code specifies
components of ‘an approved’ type. Mr. Renaudin suggests that sizes not be specified
but should comply with Test 5 provisions only and keep to the basic safety principles. At
a future time an amendment is possible when it is mentioned in the ISO standard. Mr.
Renaudin suggests that text is added indicating these provisions are provisional until
they are more clearly specified in ISO. Mr. Murray indicates that R.110 should stick with
vehicle components and that discussion of a connector is part of the fuelling station.
21. Mr. Dijkhof suggests a change in the Scope (added) to Annex 4J that the filling ‘unit’
shall comply with the requirements laid down in paragraph 3. The definitions need to be
checked (2.1). A discussion occurs on the use of the words ‘receptacle’ versus ‘unit’
which is used throughout R.110. ‘Receptacle’ also has been used to apply to the fuel
storage unit. Therefore, we can use the term ‘filling receptacle’ to ensure that it is clear
that we are talking about the filling unit on the vehicle (receiving, i.e. receptacle).
22. Discussion on metallic and non-metallic parts, which also are referenced in Annex 5D. It
is suggested that this annex needs to be changed as well.
23. Annex 4J (new): Additional language is added, line-by-line, referencing: leakage testing
at 1.5 times working pressure; references to annexes 5D, 5F and 5G; temperatures
specified in Annex 5O; cycling tests not at 10,000, which is based on CNG (3x fills per
day x 10 years) and instead reference is to LNG calculated at 1 fill per day x 365 days
per year at 20 years, or 7000 cycles; (For details, reference the updated document
LNG-TF-04-02 modified 30-05-2012 v4, to become LNG-TF-05-02); reference to all
cycles tested at low temperatures, referencing Annex 5L; decision to add in 5L a list of
references to cryogenic testing that could apply to LNG, nitrogen, etc. and not create a
new annex; duration test is added.
24. Annex 4M (new) Provisions regarding the approval of the pressure control regulator. The
cycles are aligned with the previous 7000 cycles and not 10,000; added that the
regulator shall comply with tests mentioned in Class 5; External leakage issues at
various pressures were discussed; pressure control regulator shall be leak proof and
designed to operate at temperatures specified in Annex 5O.
25. Annex 4N (New) Approvals of LNG pressure or temperature sensor. Reference is made
to LNG trapping.
26. Annex 5 Test Procedures. Added in 1.1 ‘LNG components for use in vehicles shall be
classified with regards to the minimum temperature;’ Table 5.1 LNG specific ‘Class 5’
column added to the table;
27. Annex 5C. Internal Leakage Test. Question whether this is applicable for LNG. Item 6,
internal leakage of valves is not applicable to LNG;
28. Annex 5D. CNG Compatibility Test. Add ‘LNG’ and ‘non-metallic’ part in line 1.
VI. Any other business
29. There are no further items.
VII. Next meeting: date and venue
30. 2nd and 3rd of July is proposed for a final drafting session for the LNG provisions of R.110
in advance of the deadline to submit a final document by 6th July. Mr. Del Alamo has
received confirmation that the Task Force can meet at Eurogas/NGVA Europe.
VIII. Meeting Close
31. The Chairman thanks everyone for their participation and looks forward to final editorials
prior to submitting a Formal Document to the GRSG by 6th July 2012.
Paul Dijkhof, Chairman (KIWA)
Jeff Seisler (NGV Global/Clean Fuels Consulting) (co-secretariat)
Jaime Del Alamo (NGVA Europe) (co-secretariat)
Mihai Ursan (Westport)
Jean-François Renaudin (Volvo)
Peter Murray (Chart)
Wang Shi Long (Jinan Automobile Test Centre, China)
Ravi Muthachari (Ashok Leyland)
Nathaneal Crut (Volvo)
Andrew Whitehouse (CAP) via conference call-in
Ian Bacon (SMMT-Society of Motor Manufacturers and Traders)
Bernardo Martínez (European Commission – DG ENTR)