# Mr. Andrew Abrams — Hazardous Materials Safety Interpretation

**Citation:** 09-0245  
**Type / status:** guidance / guidance  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2010-05-12

09-0245 concerning 173.315.

## Document text

<<<PAGE 1>>>

U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration
)!AY 12 2010
1200 New Jersey Ave, SE
Washington, D.C. 20590
Mr. Andrew Abrams
761 West Sproul Road #208
Springfield, PA 19064
Ref. No.: 09-0245
Dear Mr. Abrams:
This responds to your October 21, 2009 letter requesting clarification of the requirements for
Design Certifying Engineers (DCE's) under the Hazardous Materials Regulations (HMR; 49
CFR Parts 171-180). Specifically, you ask about DCE certification of a design for an
emergency discharge control system for a cargo tank motor vehicle in liquefied compressed
gas service in accordance § 173.315(n). Your questions are paraphrased and answered as
follows:
Q1: A hose system designed to automatically shut off the flow of product without human
intervention in accordance with § l73.3l5(n)(2) may be intended for a specific
application and, thus, may include components, such as pressure-specific rubber, metal,
or PTFE hose material, or metallurgic fittings, that are unique for the intended
application. For such unique designs, may the DCE elect to issue a certification utilizing
specific serial numbers with contemporaneous hose test dates rather than a more general
design certification?
AI: Yes. The DCE may issue a unique certification that would apply to a single hose system
rather than a more general certification for a hose system design. In that circumstance,
the certification could identify, by serial number and test date, the specific hose system to
which the certification applies.
Q2: If the above design certification process is appropriate, maya facility continue to issue
date and hose specific certifications bearing the DCE's signature when the DCE is no
longer employed at the facility? Or would PHMSA expect the facility to retain a new
DCE?
A2: The DCE certification remains effective for the service and parameters cited in the
certification with or without the consent ofthe DCE and even in the event that the DCE
dies. The DCE certification, however, applies only to the specific design described in the
certification. A new DCE certification is required if the previously-approved design is

<<<PAGE 2>>>

modified. In the event a DCE issues a unique certification for a single hose system, the
certification may not be used for a different hose system.
I trust this satisfies your inquiry. Please contact us if we can be of further assistance.
Sincerely,
<, l ,/~ t ..-\--~-.-- /.{ , l,:l'I
'/ ,/1,'1 ,/1
~'d/tu-<-"- '-'/ " /' I'/~L rrr C£O'
I " /
Edward T. Mazzullo ' (/,'
Director, Office of Hazardous Materials Standards

<<<PAGE 3>>>

Andrew Abrams
76 I VIIest Sproul Road Unit 208 Springfield, P A ] 9064 Wednesday, October 21,2009
IV I e/t.el.s
7s 173· 3/..3
Cargo TCU1 kS
() 7 -t):L'f~
Mr. Edward T. Mazzuilo
Director - Office ofHazardous Materials Standards
Pipeline and Hazardous Materials Administration
US Department ofTransportation
1200 New Jersey Avenue, SE Building 2nd Floor
Washington, DC 20590
Re: Letter ofInterpretation - 49 CFR 173.315-F(Jlfm}'~li!}
Dear Mr. Mazzullo
I am writing to follow-up on my January 22 2009 letter, and my correspondence with Ms.
Susan Gorsky, related to the above-captioned inquiry to ask for further and more specific
clarification ofthe regulations as they relate to the role ofa Design Certifying Engineer
("DCE") in the assembly and installation ofspecific passive shut-off devices. Based upon
our previous conversation, you indicated that the January 22 letter was not inputted into
your system, so I am sending it as an attachment to this letter.
Ms. Gorsky previously opined about the role of a DCE as it relates to the historic class of
systems that are typically certified. I regret that we were not more specific in our inquiry
to her, as the system in question poses a unique situation. Ms. Gorsky's opined after on
July 18, 2008, when the DOT conducted a compliance review at Zena to determine its
compliance with federal regulations. During the review, the DOT determined that Zena
had violated the regulatory scheme with respect to the hose certifications bearing Joseph
Abrams' signature after his termination. Specifically, the DOT determined that Zena had
violated federal regulations because "The Company's Design Certitying Engineer (DCE)
was terminated on 3/3/08. The company continued to use the terminated DCE name on
test certifications after 3/3/08." As a result, the DOT subsequently served Zena with a
"Notice ofClaim" in the amount 01'$21,480 as a fine for its violations. A copy of the
findings are attached to the enclosed letter.
To reiterate the fundamental regulatory provisions: 49 C.F.R. Section 173.315(n)(2)(ii)
provides that a certification must "consider any specification ofthe original component
manufacturer" and must explain how the passive means to shut offthe now of product
operates. It must also outline the "parameters (e.g., temperature, pressure, types of
product) within which the passive means to shut offthe flow is designed to operate" and
that a copy ofthe design certification must be provided to the owner of the cargo tank
motor vehicle on which the equipment will be installed.
In her letter dated December 5, 2008 (a response to my October 8 200& tetteT, bofu of
which are enclosed), Ms. Gotsk:y indicated that the DeE certification process is intended

<<<PAGE 4>>>

to be a "one-time" process as it was historically developed for cargo tank and unchanging
standard passive shut-off technology systems.
What we neglected to ask Ms. Gorsky, and the questions that require clarification, are the
following:
1. If a DCE, when "consider[ing] any specification of the original component
manufacturer," determines that a "one-time" certification is not appropriate because the
passive device hose system that he is certifying requires the combination ofvarious
components, such as pressure specific rubber, metal or PTFE hose materials with the
proper metallurgic fittings (and other additional components), all considered in the
context of the application to which the hose will be put, can he more appropriately choose
to issue a date and hose specific certification, utilizing hose specific serial numbers with
contemporaneous hose test dates?1 (A copy ofthe date and hose specific form of
certification that Smart-Hose Technologies Inc. and then Zena Associates LLC d/b/a
Smart-Hose Technologies has used is attached hereto.) Note: the attached New Hose
CertifICation was issued on 4///08 after the DCE was employed at Smart-Hose andpart
ofthe aforesaid DOT investigation.
2. If the aforesaid design certification process is appropriate, would it be compliant
for a facility to continue issuing date and hose specific certifications bearing the DCE's
signature when the DCE is no longer employed at the facility or would you expect them
to retrun a new DCE?
Thank you for your consideration.
1 . "Date and hose specific" meaning that each time a hose is sold a certification is prepared attesting that the specitic
technology incorporated in the specific hose being sold is appropriate for use at a certain working pressure in a specific
application, and when installed on specified equipment will satisfY the passive shut-down feature required by 49 C.F.R.
173.31 S.

<<<PAGE 5>>>

SMART HOSE
TECHNOLOGIES
New Hose
Test Certification
The Smart-Hosetm technology is a proven hose technology designed to
counteract the hazardous effect of hose rupture or failure during fluid or gaseous '
tM
transfer operations. All Smart....ose designs. Smart-Hosetm It Smart-Hosetm I
with breakaway, Smart-Hoselm It and Smart-Hosetm lit utilize the unique,
patented and patent pending designs which eUmlnates the potential for disaster
'';' through the use of an internal cable connected to specially designed, normally
unseated vaive "wedges or plungers" located on each end of the cable. In the event
of hose separation. stretching to the point of an unsafe condition, or coupling-tohose
separaUon, the valve "wedges or plungers or flappers" are released and
lnstantiy seat stopping the flow In both dlractrons. (Operating temp. -4O"F to 160"F)
I certify that this hose a8sembly meets all the requirements of the DOT and when Installed
on any MC330. MC331 or authorized non-specification compressed gas cargo tank will
satisfy the requirements for the passive shut down feature required for these cargo tanks
by 49CFR 173.315 US DOT.
Certified By: Smart-Hose Technologies CT# 7953
Des'ign~ertlfYinQ Eng':-~JO$ep~~~~~~te: 4;1';~~'--
On the above date, Smart-Hose Technologies has inspected and tested the hose
assembly listed by serial number below.
Visual InspectIon: Accepted
Test Pressure: 700 PSIG Passed
Working Pressure: 350 PSIG Passed
Hose Type:Hose. NH3- LL 3-2" X 18.6 31S-8S.FNPT - MNPT
rebuilt snd-flttlng SERJAL# 416971 ~:'
50#4520 Registered Inspec~
Company Owner of Hose:
______________
Company Representative Signature: _____~
_____
ThIS !&sf only represents that the hose haS passed the defined test on too dais tesled. no other wamsnty express or
implied is granled all a result of this certificate. Itis importanlthat all hose be inspgcf9d and tested cn a regular basis in
accordance wllh Sman:·Hose Tecf1nol~e$ Form 1H999-1 ·Proper Hose Use, Care and MaIntl!InanCIII:
2538 S 59 ' St, Philadelphia, PA 19143
Toll Ftee (877) 356-6278 Fax (215) 730-0558
. Test Cerl. Form #99-9 Rav,(i (March 20()1)
..
~ , '.
lOO/Loolt1

<<<PAGE 6>>>

U.S. Department
ofTransportation 
 Pipeline and Hazardous Materials
Safety Administration
DEC 5 2008
1200 New Jersey Ave., SE
Washmgton, DC 20590
Mr. Andrew Abrams
761 West Sproul Road Unit 208
Springfield, PAl 9064
Ref. No.: 08·0273
Dear Mr. Abrams:
This is in response to your October 28,2008 letter requesting clarification ofthe
requirements for Design Certifying Engineers (DCEs) and Registered Inspectors (RIs) und
the Hazardous Materials Regulations (HIvfR; 49 CFR Parts 171-) 80). We provided you wi~
a letter (Ref. No.: 08.0205; copy enclosed) on October 21, 2008 addressing the roles
performed by the DCE and RI during the assembly and installation of Smart-Hose Passive
Devices. This letter provides additional clarification, as requested by your October 28. 2008
letter. Your questions are restated and answered as follows:
Ql: Is the DCE's certification intended to be a "one-timo" certification? What if the DCE
dies or does not provide consent for the company to use the certification?
AI: The DCE's certification indicatos that the design and construction meets the applicable
DOT specification. This is a "ope-timo" proce&Si pnce the DeE approves the design and
provides the necessary documentation thero is no need for the manufacturer to have the
design recertified. The nCB certlfloltlon rcmftins effective with or wilhout the consent of
the DCE IUld even in the event th'lt th~ DeE dies. A new DCE certification is only required
if tho provlously approved dcsiln i. ~odUied. As defined in § 180.403, a "modification"
meaQl any C!hange to the oriBimd <lesiOI1 apd construction ofa cargo tank or cargo tank motor
veiliol. that atTec1.lls struc"....a' intcsrity or lading retention capability, including changes to
f4ldpment cenUlcd as pan ofan emergency discharge control system required under
t 173.)15(n)(2). ExcludlKl are the replacement ofcomponents ofsimilar design and ofthe
...Ize. .
Q2ala tho 'U's supervision raqulr" fOl &ho installallon ofa hose-based system that provides
the reqldml paulve shut-down QapabUlcy?
;\2. No. M '''plainod in our Octobor 2',2008 letter and providcxl In § 173.315(n)(2](iii},
RI supervl.lon i. rant reqalired for the 'nshtUa,fon ofemer8e{l~)' 4JIPharse control eq~lpment
that is in....'od and remove4 as part C)fresqhtr operation oflha cargo rank motor vehIcle
(e.g., I 110..). Ja',lho r"ponslbltlty.oflbe DeE to certilY ,hac tho emergency discharge
control,~ 1.4Islpod to aUlQJnalfc.Uy shut offpro4uct flow without the need for human

<<<PAGE 7>>>

intervention within 20 seconds of an unintentional release caused by a complete separation of
a liquid delivery hose (§ 173.315(n)(2)(ii». Given that the DCE approves the design of the
emergency discharge control equipment and it is attached to a cargo tank motor vehicle in the
same way as an ordinary hose, Rl supervision is not necessary.
In addition, ifyou are aware of an operator that is using a new or modified hose design that
has not been approved by a DCE you may file a complaint at
http://www.phmsa.dot.gov/hazmatlenforcement or contact our enforcement office directly at
(202) 366-4700.
I hope this infonnation is helpful. Please contact us if you require additional assistance.
Sincerely,
-'1 IJ·
/V't,0L .ofo J
Susan Gorsky
Regulations Officer
Office of Hazardous Materials Standards

<<<PAGE 8>>>

Andrew Abrams
761 West Sproul Road Unit 208
Springfield, PA 19064
Tuesday, October 28,2008
Ms. Susan Gorsky
Acting Chief, Standards DeveJopmenmt
Office ofHazardous Materials Technology
US Department of Transportation PHMSA
1200 ~ew Jersey Avenue, SE Building 2nd Floor
Washmgton, DC 20590
Re: Letter of Interpretation - 49 CFR 173.315. Follow-Up
Dear Ms. Gorsky
I am. wri~g to. follow-up on your October 21 letter in connection with the above
captIoned mquuy to ask for an additional clarification ofthe regulations as it relates to
the ~Ie of ~ DCE and Registered Inspector in the assembly and installation of certain
passIve deVIces.
In your letter you indicated that (1) Tho DeE Is only required to certifY that the design
confirms to the performance standard and that there is no requirement to review each
component throughout themanuflWturing process.
Issue: if the regulatlpns indlcAto that" All components ofthe discharge system that are
Integral to the design niHIl hff t""/~d In the certification." and these components have
certain Inconsistency such as SQlU'Oes ofmatcrial or metallic composition, is the DCE's
certiflcatipn lnaonded to be .. "o",..tlme" certification?
• Can thoro bo 11 ",ertitlcaUon issued by a now deceased DCE?
• DoOl "'0 OCE'. certificatlort need to specifically identifY each of the components.
so"""'. Qfmatorlal. bills ofmaterIal that they are certitying and ifthe
manufacturer changes these componenfs. a new DCE certification might be
require"? U'IO, what WPlJld happen ifthe DCE issued a generic system
oCl1iftcarion and then was no longer employed by the company - could the
company continuo to use the certification without hislher consent?
Issu!! In your reply ),ou indicated that the Emergency Discharge Control Equipment
must <'b, l7IStalled under the supervision ofa Registered Inspector" but you identified an
ambigulf)' regarding Itoscs. Wo believe that the regulations were promulgated in
conneotlon With systf.'ml such as RF devices that are manufactured by one company but
uttfmlltoly both assembled and installed by the end-user (ie truck assembler) and not the
manufactull'r. Therefo"" the requirement for a Registered [nspector was to assure tbat
the 8!l!tem DS eOUCfrttv instaJJed and not put together by some unknowledgeable party.

<<<PAGE 9>>>

• Since the Smart-Hose system (or any funy installed hose based passive device)
has its final installation completed by its own employees and not the end-user, is
the intent of the regulations to not require aoy supervision while this type of
passive device is installed? Why would we require a Registered Inspector to
install an RF system but require no supervision either by the manufacturer or the
end user in the case of a hose based system?
• Do you agree that since the hose is installed merely by threading it onto the
appropriate connection, if we define iristalled for hoses it would have been
impractical to have every truck driver become a RI. If however we define
"installed" tor hose based passive device systems to be when the passive device is
installed within the hose, would it not make sense for an RI to oversee this
installation and therefore be consistent with the intent of the regulations?
• Was the intent of the language "under the supervision ora Registered Inspector"
to require the system to Registered Inspector to look carefully at or over; view
closely and critically or examine formally or officially the installation ofthe
passive device and therefore must this function be performed contemporaneously
with the installation ofthe system? More succinctly, can this function be
performed by someone who is not present during the installation?
Thank you for your consideration.
Sincerely,
Andy Abrams

<<<PAGE 10>>>

Andrew Abrams
761 West Sproul Road Unit 208
Springfield, P A 19064
January 222009
Ms. Susan Gorsky
Acting Chief, Standards Development
Office of Hazardous Materials Technology
US Department ofTransportation PHMSA
1200 New Jersey A venue, SE Building 2nd Floor
Washington, DC 20590
Re: Letter ofInterpretation - 49 CFR 173.315- Follow-Up -1
Dear Ms. Gorsky
I am writing to follow-up on your December 5 2009 letter in connection with the above
captioned inquiry to ask for a fonnal meeting to discuss your reply regarding your
clarification ofthe regulations as it relates to the role of a DCE and Registered Inspector
in the assembly and installation of certain passive devices.
Since the exchange of infonnation has not been expressed properly and your explanation
is directly in contradiction to the discussions that fonned the basis ofthe internal SmartHose
certification in 2001, I believe it would be prudent to meet.
I have discussed your answers with Mr. Alan Roberts who expressed his strong
disagreement with your conclusion. As the fonner RSP A Administrator and the overseer
of these regulations, I believe that a meeting to further clarify your interpretation would
be helpful to all.
Under your basis, you can be assured that no one would certify a system in perpetuity
exposing themselves to liability should there be a malfunction even if they had no
oversight regarding the system at hand. Moreover, having been specifically involved in
the regulatory process that spawned these regulations, the hose based Registered
Inspector "carve out" only related to the actual attachment of the hose and not its
assembly/installation in the system.
If we follow your interpretation, you would sanction a dead DCE and no inspector
assemble "Passive Devices". How can we reconcile this interpretation against the
companies previously adhered to two primary SOPs - Production Inspection Points
and Quality Control Critical Inspections that specifically identify safe and proper
operations? Should they be changed to accommodate the above missing safety;personnel
that the entire process clearly sought?
During Joseph Abrams' tenure after we consolidated the in-house DCE with the QC
Inspector's role, he performed these duties on a regular basis. The Certification was

<<<PAGE 11>>>

'
developed as a hose specific certification identifying "this hose assembly .. "not all
assemblies. Was this erroneous and should his signature identifying a contemporaneous
date with this language be acceptable. Could he continue to certify "this hose
assembly..." as ofthis date ifhe were no longer alive?
As ofnow, despite clearly established procedures identifying a continuous need for "the
above designated inspections {to beJ performed by a Quality Control Inspector", there
has been a four month period without any of these procedures being adhered to.
Moreover, the absolute need for such inspection is highlighted in internal procedures that
specifically call for "random spot checks by the Q.C Inspector". In the absence ofany
registered (or Q.C.) Inspector, how might this procedure be complied with? Procedures
developed based upon safe practice and the regulatory process that
The certification developed, based upon the regulatory process and procedures sought to
meet the intentions of the law and common safety practice. With all due respect, we
believe that you personal interpretation is erroneous, not consistent with this type ofhose
based Passive Device and request a formal hearing to discuss this matter further.
Thank you for your consideration.
Sincerely,
Andy Abrams

<<<PAGE 12>>>

Page 1 of 1
Drakeford, Carolyn (PHMSA)
From: Mazzullo, Ed (PHMSA)
Sent: Wednesday, October 28,20099:'10 AM
To: Gorsky, Susan (PHMSA); Drakeford, Carolyn (PHMSA)
Subject: FW: Clarification
Attachments: edward t mazullo- oct 21 2009,pdf
Carolyn: Please assign for response,
Susan: He may have a valid pOint What do you "opine"?
Ed
From: Andy Abrams [mailto:acabrams@comcast.net]
Sent: Tuesday, October 27, 20094:55 PM
To: Mazzullo, Ed (PHMSA)
Subject: Clarification
Dear Mr. Mazzullo
Enclosed please find the information inquiry we discussed. A separate copy is being sent via courier
today.
In light ofthe importance of this issue, we would respectfully request an expedite evaluation ofthis
request. I am happy to visit your office and meet with you and your colleagues if this will assist in this
process and expedite the reply.
Thank you in advance for your consideration.
Warmest regards.
Andy Abrams
267-307-0949
10/28/2009

## Provenance

- Official: Yes
- Source: <https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretations/2010/090245.pdf>
- Source ID: `phmsa`
- SHA-256: `bc9dd72a64a7bba24b6c81d87694ee09572980e5f0e3dc71df1818122759e2e2`
- Retrieved: 2026-08-20T00:59:31.977Z
- Exported: 2026-08-22T21:55:50.411Z
- Document slug: `phmsa-interpretation-09-0245`

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