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AIAA Hydrogen Committee on Standards
Meeting Minutes
Telecon
January 20, 2011
Meeting Attendees:
Attendee
Amy Barrett
HCOS Role
AIAA Liaison
Darren Cone
Josephine Covino
Member
Member
William St. Cyr
Eric Dirschka
John Jurns
Member
Member
Member
Jonathan Lee
Miguel Maes
Stephen H. McDougle
Timothee Pourpoint
Andy Slifka
Member
Member
Secretary
Member
Member
Steve Summer
Member
Yvonne Tran
Stephen Woods
Joseph Zoeckler
Member
Chairman
Member
Organization
American Institute of Aeronautics and
Astronautics (AIAA), Product Manager,
Domestic Standards
NASA White Sands Test Facility (WSTF)
Department of Defense, Explosives Safety
Board
NASA, John C. Stennis Space Center
NASA, Kennedy Space Center
ASRC Aerospace Corp, NASA Glenn
Research Center
NASA Marshall Space Flight Center
NASA WSTF
MEI Technologies, NASA WSTF
Assistant Professor, Purdue University
National Institute of Standards and
Technology (NIST)
Federal Aviation Administration (FAA)
Fire Safety, Atlantic City
FAA, Office of Commercial Space
Jacobs Technology, Inc, NASA WSTF
NASA Glenn Research Center
Call to Order
Chairman Steve Woods called the meeting to order at 1:05 PM EST with the use of web
conferencing provided by AT Conference under the auspices of the AIAA.
The meeting was conducted according to the following agenda.
 Committee Business
o Introduction of Attendees/Attendance
o Approval of July 2010 Minutes
o Membership
o Review of Action Items
o Review of HCOS Website features
o Review of ANSI standards requirements and AIAA standards process
 Status on revision of the AIAA Hydrogen Safety Guide
 Status of other activities
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o Hydrogen Hazard Analysis Protocol
o AIAA Hydrogen Safety Course
 News & Related Standards Activities
o Status of Hydrogen Flow Control Valve Work at WSTF
o Hydrogen/helium recovery
o Facility review and training for Blue Origin
o Other announcements
 Open Discussion
 Agenda and Schedule For The Next HCOS Meeting
The Powerpoint slides used for the meeting are available on the HCOS website.
Committee Business
Introduction of Attendees
HCOS Chairman Steve Woods welcomed everyone to the meeting asked each individual to
introduce himself. Among the participants were prospective new members Andy Slifka (NIST),
Timothee Pourpoint (Purdue University), Steven Summer (FAA) and Yvonne Tran (FAA),
Darren Cone a materials subject matter specialist working with member Jonathan Lee, and Eric
Dirschka acting for new member Robert Johnson or KSC. Amy Barrett was present as the AIAA
Staff Liaison.
Approval of Minutes From The July 2010 Meeting
Committee business commenced with approval of the minutes from the previous meeting of the
HCOS held July 27, 2010 at the AIAA Joint Propulsion Conference in Nashville, TN. Secretary
McDougle moved to accept the minutes. Miguel Maes seconded the motion. The motion was
subsequently approved by the telecon participants by a unanimous voice vote.
Membership Status
Secretary McDougle welcomed the new members present and Amy Barrett thanked everyone for
the extraordinarily quick response for filling out and returning AIAA CoS Participation forms
distributed just prior to the meeting (17 forms in 24 hours)! Secretary McDougle noted that the
HCOS membership was under review based on member activity and by contacting members to
ascertain their current interests. Although not specifically discussed during the meeting the
following individuals are being considered as inactive:
Name
Disposition
Cavage, William (FAA)
Left AIAA to join Gulf Stream, continued
participation from FAA sought (Steven
Summer and Yvonne Tran)
Chen, Xiahou (Visteon Corp)
No response to repeated attempts to
contact
Iyengar,Venkat (Aerospace)
No response to repeated attempts to
contact
Jarmer, John (Los Alamos National
Laboratory)
No response to repeated attempts to
contact
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Jones, H.P. (Underwriters Laboratories)
Resigned from the HCOS via e-mail. No
other UL staff interested for the time
being
McIntosh, Glen (Cryogenic Technical
Services)
Resigned from the HCOS via e-mail
Mihalik, Edward (ATK GASL)
Resigned from the HCOS via e-mail
Ohi, Jim (National Renewable Energy
Laboratory)
Resigned from the HCOS via e-mail
Qubbaj, Ala (University of Texas Pan
American)
No response to repeated attempts to
contact
Ringrose, Michele (AIAA)
AIAA Staff Liaison, retired
Samadi, Gity (Powertech Labs)
No response to repeated attempts to
contact
Siegwarth, James (NIST)
No response to repeated queriesRetired.
James submitted Andy Slifka as his
replacement.
Smith, Tim (NASA Glenn Research
Center)
Resigned from the HCOS via e-mail
It was pointed out to the prospective members that AIAA membership was not a condition for
participation in the AIAA HCOS.
Action Items Status
Secretary McDougle led a review of the action items that are currently open.
Mohammad Naraghi provided Dr. Pourpoint as a potential contact as a Hydrogen Hazard
Assessment Protocol (HHAP) reviewer. Chairman Woods contacted Dr. Pourpoint at Purdue and
sought his help in reviewing the HHAP (see below).
Item No. 38 to provide a timeline for upcoming work on the Hydrogen Hazard Analysis Protocol
(HHAP) was closed. The update for the Hydrogen Safety Guide will have priority for the time
being. Work on the HHAP will be resumed at a future date.
Item No. 43 to survey the Boeing Materials Group for reviewers for the Hydrogen Safety Guide
was closed due to no contact with the item owner, Michelle McElvaine.
Item No. 44 to publish a draft version of the schedule for the work on the Hydrogen Safety Guide
revision was completed and closed.
There were no other changes to the action item list.
Summary of New Actions Requested

The question of how members should identify their role within the HCOS to meet ANSI
requirements for balanced review of standards documents arose. ANSI rules allow certain
flexibility in the selection criteria for roles. Chairman Woods and Secretary McDougle
will review categories selected previously by the HCOS that might find potential use for
upcoming Guide review work and distribute them for comment to committee members.
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The object would be to identify categories that better fit member roles. This information
will be used to update the AIAA Participation forms.

The question was raised if the Compressed Gas Association (CGA) was accredited with
ANSI. After the meeting Amy Barrett researched the question and confirmed that CGA is
accredited with ANSI.

Electronic text of the current AIAA Guide while available to NASA members of the
HCOS through the NASA Standards website, is not available to non-AIAA HCOS
members through the AIAA website. Amy Barrett will provide electronic text of the
AIAA Hydrogen Guide to any HCOS member who requests a copy.

Amy Barrett will investigate how the “print on demand” option will work and coordinate
any potential issues with the Chairman and Secretary.

John Jurns will work with Joe Zoeckler to complete the update to the Guide on the
purging topic.

The topic of cold-shock recommendations needs contributions from additional authors or
subject matter experts. Eric Dirschka will ask Robert Johnson if he can find KSC
expertise to help. In addition, Bill St Cyr, volunteered to seek if SSC expertise could be
identified to help.
AIAA HCOS Website
Secretary McDougle gave a short presentation showing how to access the HCOS website hosted
by the AIAA and described the benefits of its use. Steve Summer confirmed during the meeting
that the AIAA HCOS website was available to non-AIAA members. Members are encouraged to
become familiar with the website as Secretary McDougle will use the site increasingly as a place
to post information, minutes, etc.. (the Powerpoint slides detailing “how-to” will be attached to
the email distributing these minutes).
ANSI Requirements for AIAA CoS Activities
AIAA was reaccredited recently by ANSI. Amy Barrett reviewed ANSI requirements for
obtaining ANSI certification for standards documents and the AIAA standards process for CoS
activities. Her Powerpoint presentation is available on the AIAA HCOS website.
Status of the AIAA Hydrogen Safety Guide Revision
Chairman Woods provided a status on development of the update to the Guide and invited
authors to describe their progress to date. Work is described by activity:
Guide Format. AIAA is moving to electronic publishing. Improvements in the look and
functionality of the document such as can be implemented in PDF format will be supported by
AIAA Publications. This will include the use of color and simple hyperlinks. Chairman Woods
will provide a draft illustrating functions to authors. Amy Barrett stated that material undergoing
review should be watermarked “DRAFT”. Secretary McDougle pointed out that AIAA is an
international organization with a high percentage of its members residing in foreign countries.
Amy confirmed that and pointed out that everything AIAA publishes is in the public domain with
respect to the International Trafficking in Arms Regulation. Therefore, authors contributing
material to the Hydrogen Safety Guide may be responsible for getting that material cleared
through their respective ITAR reviewers. Subsequent to the meeting, Amy confirmed via e-mail
that AIAA has approximately 18% foreign membership.
Section 1 – Policy. Senior Safety Officer, Art Wood was assigned by NASA Office of Mission
and Safety Assurance (OSMA) to review policy information (Section 1) in the Guide. The only
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recommendation was to add a reference for the recently approved NASA-STD-8719.12 which
covers quantity-distance requirements for the use of propellants. It is NASA’s sister document to
DoD’s 6055.9.
Section 2 – Physical Properties and Combustion updates. The Chairman described his work to
update physical properties and combustion information in the Guide. This includes new physical
properties information, notes on hydrogen behavior in a metallic lattice, expansion of combustion
information (especially regarding deflagration), and new information on leak behavior. The draft
effort is nearing completion.
Section 3 – Materials. Jonathan Lee has proposed a considerable expansion of hydrogen
embrittlement information and practice. He will be assisted by Darren Cone. Because of the
importance and substantial nature of the work the completion date for this effort has been
extended to August-September 2011. This will allow Jonathan to take advantage of material
being developed for the book he is working on with Sandia Laboratories authors. The Chairman
restated the need to identify an author who can contribute in the area of composite materials and
vessels for hydrogen service.
Section 4 – Facilities. The work of Ben Greene (WSTF chemistry subject matter expert) in
adapting and expanding DoE developed guidelines for hydrogen work in laboratory settings was
described by the Chairman. This will be incorporated into the Facilities section within the Guide.
Section 7 – Operations. John Jurns described the content and status of an update on purge
recommendations for the Guide. He has requested the help of Joe Zoeckler and he expects to
complete the effort within one month. The Chairman noted that the effort to update the coldshock recommendations (current author, Miguel Maes) needs support from additional authors or
subject matter experts. KSC and SSC members of the HCOS offered to help find support.
Annex update. An initiative proposed by Joan Hoopes was to improve access to electrical
information. The Chairman is overseeing WSTF Publications to use “indexing” search functions
to identify potential content for a “look-up” table of electrical topics that would be placed in the
Annex. Joan Hoopes will review the draft.
Options for updating exclusion zone information (S. Woods and J. Covino) within the Guide’s
current draft were discussed. This information considered would come from the “Correlation of
Liquid Propellants-NASA Headquarter RTOP”, but it is recognized this document is currently
classified as falling under the restrictions imposed by International Traffic in Arms Regulations
(ITAR). Therefore some work is required to identify material for publication and to seek its
review for release. Yvonne Tran (FAA) and Josephine Covino (DDESB) have expressed interest
in this and will work off-line with the Chairman to explore options. Yvonne mentioned
specifically that she would like to know the rationale behind the exclusion zone requirements.
The Chairman suggests that a second telecon be conducted in March-April with authors to
evaluate progress on the Guide update drafts. The scheduling of the telecon will be coordinated
by email in the intervening time.
Status of Other Activities

Hydrogen Hazard Analysis Protocol
In the previous HCOS meeting Mohammed Naraghi volunteered to seek reviewers from the
AIAA’s Liquid Propulsion Committee and identified Dr. Timothee Pourpoint at Purdue
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University as a potential reviewer. Chairman Woods contacted Dr. Pourpoint and secured a
promise of help which was delivered when Chairman Woods visited Purdue last November.
Dr. Pourpoint and his graduate assistant, Tyler Voskuilen, have already sent comments and
the Chairman thanked them for their efforts. The Chairman recognizes that more review is
needed but that seeking assistance from the HCOS should wait until the higher priority Guide
work is well in hand.

AIAA Hydrogen Safety Course
The need for a Memorandum of Understanding between NASA and AIAA for the NASA
course materials is still under consideration, but there is some question as to whether it is
really needed. The Powerpoint slides for the course remain ready for use in the AIAArequired format. It was noted that the initial offering at last year’s Joint Propulsion
Conference was cancelled due to lack of interest (2 individuals registered, and a minimum of
4 participants are required to conduct a training session). The Chairman said the HCOS
would remind the membership of upcoming course venues in advance. Amy Barrett was
asked to find out from Patricia Carr how much advance notice was needed and when, in
advance of a planned venue, the AIAA would decide to withdraw a course. In a response
provided after the meeting Ms. Carr’s recommendation was to advertise as far in advance as
possible (4 to 5 months) and that AIAA reviews course participation three weeks in advance
of the planned offering.
News and Standards Related Activities

WSTF Hydrogen Flow Control Valve Work
Secretary McDougle noted that WSTF’s test work to investigate the poppet cracking problem
within the hydrogen flow control valves used on the Space Shuttle is nearly complete. There
is likely no further need to process additional flight valves since there is a sufficient stock of
certified valves to last through the end of the Shuttle program.

Hydrogen/Helium Recovery
Chairman Woods provided a status of helium recovery work in progress and hydrogen
recovery planned for the future. Both activities would capture gas that is currently vented to
the atmosphere from many different types of operations.

WSTF Work with Blue Origin
Chairman Woods described how WSTF is assisting Blue Origin, a commercial space
company developing a low Earth orbit (LEO) spacecraft system for space tourist flights.
WSTF has reviewed hydrogen test stand safety at their facility near Van Horn, Texas and will
provide hydrogen safety training.

Hydrogen Embrittlement Book in Progress with Sandia Labs
Jonathan Lee related his work as an author and collaboration with Sandia Laboratories
authors on a book updating the technical community with information on hydrogen
embrittlement in steel alloys used in pipelines. His contribution will cover the state-of-the-art
in fracture toughness research. Publication is planned some 12 to 15 months from now.

Cost Effective Method to Measure Fracture Toughness Using Round Notched
Tensile Specimens.
A rapid and cost effective testing method is under development at NASA-Marshall Space
Flight Center (MSFC) to measure the plane-strain fracture toughness (K1c) of materials using
simple Round Notched Tensile (RNT) specimens. Since 1960’s, the RNT specimens have
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been used as a material screening method to estimate the effects of hydrogen embrittlement
on materials. However, MSFC has recently discovered that the RNT can also be used to
accurately measure the K1c and, perhaps more importantly, how hydrogen can reduce the
K1c values. The conventional method to measure K1c is very complex, time consuming and
expensive, so a rapid and less expensive method to measure K1c would be extremely
desirable, especially for materials that are affected by gaseous hydrogen exposure.

Liquid Acquisition in Microgravity Environments
John Jurns described hydrogen projects at the Glenn Research Center to test transfer activities
for moving LH2 from 1500-1600 gallon vessels into smaller 300 gallon tanks in a
microgravity environment.

Daimler Benz – 125 Anniversary Round-the-World Trip
Eric Dirschka described participation by KSC as a potential east coast refueling location
when Daimler’s fuel cell vehicles travel across the U.S. from Miami to San Diego then north
to Vancouver, Canada. The vehicles require refueling opportunities approximately every 200
miles. Daimler will be using a mobile compressor system that will travel with the entourage.
It was noted that the planned route involved U.S. Hwy 10 and should take the vehicles near
Stennis Space Center in Mississippi and near WSTF which is located outside of Las Cruces,
NM (on Hwy 10).
Open Discussion
The open discussion portion of the agenda was limited because the HCOS had run up to the
planned 2 hour limit scheduled for the WebEx session.
Agenda and Schedule for the Next HCOS Meeting
Decisions regarding the next meeting place and time will be conducted through HCOS
announcements. Current options are for a “face-to-face” meeting to be conducted at the summer
JPC planned for July 31 – August 3rd at the San Diego Convention Center and for a telecon to
discuss author progress in the March to April time frame.
The meeting was adjourned at 3:05 PM EST.
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HCOS Website
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Slide 1
AIAA Hydrogen Committee on Standards
HCOS Website
info.aiaa.org
July 22, 2010
Steve McDougle
NASA WSTF
Slide 2
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Slide 3
Slide 4
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Slide 5
Slide 6
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AIAA Domestic Standards
Procedures and Processes
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Slide 1
Domestic and Standards:
Procedures and Processes
Slide 2
Workshop Overview
• Benefits of standards
• AIAA as an accredited
Standards Development
Organization (SDO)
• Who develops standards
• The process at AIAA
2
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Slide 3
Benefits of Standards
Economies of scale
Expanded trading possibilities
Indirect network effects
Establish a common technology
base/technical integrity
• Support legislation
• http://www.iso.org/benefits
•
•
•
•
3
Slide 4
AIAA as an accredited Standards Development
Organization (SDO)
• Adds value to the standards
process/development
• Ability to add the “American National
Standard” moniker
• Required by certain government
contracts (CCSDS)
4
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Slide 5
Who Develops Standards
• Organizations:




IEEE
SAE
AIA
ASTM
• Within AIAA
 Volunteer SME (industry, gov’t,
academe, consultants)
5
Slide 6
The Process: ANSI/AIAA
• Consensus Body Formed
 Volunteer from TC or other interested party
 Recruit from subject area
 Aim for balanced committee
• Requirements
 Communicate with AIAA Director of
Standards or Program Manager
 Project Proposal Form
 Participation Forms
6
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Slide 7
The Process: ANSI/AIAA
• Proposal submitted to SEC for
approval
 2 week ballot period
 ANSI PINS form submitted within 60
days of SEC approval
• Requirements
 Provide complete documentation about
the proposed project
 Committee must be balanced
7
Slide 8
The Process: ANSI/AIAA
• Project Development
 CoS writes Standard using the Standard
template as a guide
 Draft sent to AIAA Project Manager for
editing/review
 CoS reviews final draft and approves for
Public Review
• Requirements
 Email from CoS Chair to release document for review
and committee ballot (2/3 majority needed)
 For ANSI docs, PM submits form
8
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Slide 9
The Process: ANSI/AIAA
• Comment Disposition
 Comments are submitted to PM
 PM collates PR and CoS ballot
comments and submits to CoS Chair
 CoS resolves comments
• Requirements
 Disposition of comments returned to
commenters and PM
 Unresolved objections recirculated to CoS
9
Slide 10
The Process: ANSI/AIAA
• Acceptance and Final Approval
 Document is submitted to SEC for vote to
accept for publication
 If ANSI document, PM submits form and
other documentation for approval
• Maintenance
 PM initiates review at year 4 of document
and year 9
 Reaffirmed by CoS
10
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Slide 11
ISO
Nick Tongson
Director of Standards
AIAA
1801 Alexander Bell Drive
Suite 500
Reston, Virginia 20191
USA
Tel: +1-703-264-7515
E-mail: nickt@aiaa.org
www.aiaa.org
QUESTIONS?
ANSI/AIAA
Amy Barrett
Product Mgr – Domestic Stds
AIAA
1801 Alexander Bell Drive
Suite 500
Reston, Virginia 20191
USA
Tel: +1-703-264-7546
E-mail: amyb@aiaa.org
www.aiaa.org
11
Slide 12
12
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HCOS Meeting Agenda
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Slide 1
AIAA Hydrogen Committee on Standards
Status of Developments Meeting
January 20, 2011
1:00 – 3:00 PM EST
Stephen Woods
Stephen McDougle
Miguel Maes
NASA WSTF
Dial In:
1-866-939-8416
Participant Code: 3987489
Web Page: www.atconference.com/meet Participant Code: 3987489
Slide 2
Meeting Agenda
• Committee Business
• AIAA Guide revision status
• Status of other activities
• News & Related Standards Activities
• Open Discussion
• Agenda and Schedule for Next HCOS Meeting
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Slide 3
Committee Business
• Introduction of Attendees
• Approval of July 2010 Minutes
• Membership
• Review of Action Items
• Meeting Attendance
• HCOS Website (hosted by AIAA)
Slide 4
AIAA Guide Revision Status
(AIAA G-095-2004)
• Improvements to document function
– AIAA is moving to electronic publishing (Rodger Williams, AIAA
Publications )
– Features readily implemented in PDF format acceptable
• “Prominent” data may be presented in the text
• WSTF will implement multicolor figures and simple
hyperlinks (to figure or annex materials)
– Document will be made available as a download
– Burden for printing is on user
• Section 1 – OSMA review (Art Wood, Senior Test
Safety Officer, Safety and Test Operations Division )
– Material still up to date
– Add NASA-STD-8719.12 along with DoD 6055.9 as a
reference document
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Slide 5
AIAA Guide Revision Status
(AIAA G-095-2004)
• Physical properties & combustion issues (S. Woods):
– Revision of Section 2 draft and supporting Annex materials
nearly complete, includes:
•
•
•
•
Addition of physical properties information,
Hydrogen behavior in a metallic lattice,
Minor reorganization of health and exposure info, and
Expansion of combustion information, especially regarding
deflagration.
– Additional information on leaks recommended for annex
• New information on leaks and permeation in metals ( DoT)
• Behavior of leaks in high pressure systems
– Leak information to aid Quantitative Risk Assessment
(QRAs) (NFPA and DoE)
– Hazard information on plumes (Sandia and University of Ulster)
Slide 6
AIAA Guide Revision Status
(AIAA G-095-2004)
• Extensive revision of metal materials information
planned (Jonathan Lee and Darren Cone)
• No author yet identified to provide composite
materials info
3.1 HYDROGEN EMBRITTLEMENT
3.1.1 Introduction
3.1.2 Classification of Hydrogen Embrittlement
3.1.2.1 Hydrogen Environment Embrittlement (HEE)
3.1.2.2 Internal Hydrogen Embrittlement (IHE)
3.1.2.3 Hydrogen Reaction Embrittlement (HRE)
3.1.3 Test Methods for Hydrogen Embrittlement
3.1.3.1 Degree of Hydrogen Degradation Rating
3.1.3.2 Effects of strain rates
3.1.4 Effects on Mechanical Properties by HEE
3.1.4.1 Tensile Properties
3.1.4.2 Fracture Properties
3.1.4.3 Low Cycle Fatigue
3.1.4.4 High Cycle Fatigue
3.1.4.5 Crack Growth Rte
3.1.4.6 Creep Rupture
3.1.5 Important Factors in HEE
3.1.5.1 Hydrogen gas pressure
3.1.5.2 Temperature
3.1.5.3 Heat Treatment and Product Forms
3.1.5.4 Surface Finish
3.1.6 Prevention and Control Methods for Hydrogen
Embrittlement
3.1.6.1 General Guidelines
3.1.6.2 ASME Hydrogen Codes and Standards
3.1.6.3 Hydrogen Gas Purity and Coating Technology
3.1.6.4 Hydrogen Baking
3.1.7 Materials Selection for Hydrogen Embrittlement
Reduction
3.1.7.1 Metallic Materials
3.1.7.1 Non-Metallic Materials
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Slide 7
AIAA Guide Revision Status
(AIAA G-095-2004)
• Section 4 – Expansion of laboratories material in
review at WSTF (Ben Greene and Mark McClure)
• Electrical information organization (Joan Hoopes):
– Place in the Annex a “quick look-up” list locating material
throughout text?
• Section 7 - Update on purge recommendations in
progress (John Jurns)
• Revision initiatives that need refocusing:
– No status on cold shock draft materials (Miguel Maes)
– No status on exclusion zone information (S. Woods &
Josephine Covino)
Slide 8
Status of Other Activities
• Hydrogen Hazard Analysis Protocol (HHAP)
– Required actions
• Select a subcommittee chair and volunteer
reviewers
• Develop a review plan
– Are there sufficient committee resources to commit to
draft development?
– Purdue researchers Dr. Pourpoint and grad student
Tyler Voskuilen submitted comments
• AIAA Hydrogen Safety Course
– NASA slides adapted to AIAA format
– First offering cancelled due to insufficient attendees
– MOU between AIAA and NASA on hold (may not be
deemed necessary)
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Slide 9
News & Related Standards
Activities
• Flow Control Valve Work (S. McDougle)
• Hydrogen/Helium Recovery (S. Woods)
• Facility review and training for Blue Origin (S.
Woods)
• Other Announcements?
Slide 10
Discussion & Close
• Open Discussion
• Agenda and Schedule for Next HCOS
Meeting
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