# AMTROL Water Systems — Hazardous Materials Safety Interpretation

- **operation:** document
- **citation:** 19-0024
- **title:** AMTROL Water Systems — Hazardous Materials Safety Interpretation
- **source type:** guidance
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** guidance
- **official:** true
- **published on:** 2019-08-14
- **effective on:** Not available
- **summary:** 19-0024 response to AMTROL Water Systems concerning 173.306.
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-interpretation-19-0024.json
- **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-19-0024.md
- **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-19-0024
- **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/docs/standards-rulemaking/hazmat/interpretations/72051/190024.pdf
**body:**

<<<PAGE 1>>>

U.S. Department
of Transportation
Pipeline and Hazardous
Materials Safety
Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
AUG 1 4 2019
Mr. David Beretta
Manger, Compliance & Regulatory
AMTROL Water Systems
1400 Division Road
West Warwick, RI 02893
Reference No. 19-0024
Dear Mr. Beretta:
This letter is in response to your February 26, 2019, email requesting clarification of the
Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180) applicable to the transportation
of water pump systems. In your email, you describe water pump systems containing "UN1956,
Compressed gas, n.o.s. (air with up to 15% helium), 2.2" shipped at 38 pounds per square inch
(psi) of pressure, with each cylinder weighing approximately 112 pounds each. You also
reference a previous letter of interpretation (09-0010) which discusses the application of the
limited quantity exception in§ 173.306(g) to the water pump systems described above. This
previous letter of interpretation clarifies a "single-trip shipment" under § 173.306(g) as a one-
time movement of the water pump systems from the facility where they are purchased to the
installation site. However, you interpret a "single-trip shipment" as the movement from the
manufacturing site to the end-user regardless of whether there is storage incidental to movement
before delivery to an installation site. You note that there is no alteration of the package or outer
packaging during the storage incidental to movement. You ask whether the described shipment
would be considered a "single-trip shipment" under§ 173.306(g) ifthere is storage incidental to
movement with no alterations to the package or outer packaging prior to delivery at the
installation site.
Provided the water pump systems and any packaging/outer packaging are unaltered, the scenario
described in your email would qualify as a "single-trip shipment" under§ 173.306(g) and the
limited quantity exception would apply.
I hope this information is helpful. Please contact us if we can be of further assistance.
Sincerely,
T. Glenn Foster
Chief, Regulatory Review and Reinvention Branch
Standards and Rulemaking Division

<<<PAGE 2>>>

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Dodd, Alice (PHMSA)
From:
Sent:
To:
Subject:
Attachments:
INFOCNTR (PHMSA)
Wednesday, February 27, 2019 2:10 PM
Hazmat Interps
FW: Letter of Interpretation for 173.306(g), Single Trip Shipment
20190226135051510.pdf
Hello Alice and lkeya,
Below is a request for letter of interpretation.
Thanks,
Jonathon, HMIC
From: Beretta, David [mailto:David.Beretta@worthingtonindustries.com]
Sent: Tuesday, February 26, 2019 3:03 PM
To: INFOCNTR (PHMSA) <INFOCNTR.INFOCNTR@dot.gov>
Cc: Lafazia, Patricia <Patricia.Lafazia@worthingtonindustries.com>; McKinley, Jody
<Jody.McKinley@worthingtonindustries.com>; Morey, Susan <Susan.Morey@worthingtonindustries.com>; Gentry,
Steve <Steve.Gentry@worthingtonindustries.com>; Newberry, Paul <Paul.Newberry@worthingtonindustries.com>
Subject: Letter of Interpretation for 173.306{g), Single Trip Shipment
Hello:
A previous letter of interpretation, your #09-0010, was issued.
However, Oregon DOT has requested that I get a more detailed response in another letter of interpretation. Specifically,
they are not sure if "from manufacturer/distributor to the end-user" allows stops along the way and still qualify as
"single trip shipment".
I feel your original interpretation is clear since if the shipment goes to a distributor it must stop or otherwise it would be
going directly to the end user.
{I have attached the original request for interpretation from John Dileo of Pentair dated 12/29/2008).
During shipment, by AMTROL (and our competitors) there is storage of the packages incidental to movement.
The one time shipment could take the form of transferring from a truck to truck to a storage facility then on to a
distributor then on to a dealer then to a contractor and finally and end user. Or, the shipment could be more direct.
We interpret "single trip shipment" as the movement from the manufacturing site to the end-user whether there are no
stops or several. . (No alteration of the package or outer packaging at all during the stops in the "single trip" shipment.)
If you would please confirm in writing through a Letter of Interpretation our understanding of the above that would be
greatly appreciated . If you can confirm our understanding, it would be appreciated if the Letter of Interpretation has a
more detailed explanation than the sentence in your #09-0010 ("In this context , "single-trip shipment" .. .. )
Feel free to contact me.
Thank you for your time and understanding.
Respectfully submitted,
Best Regards,
David
1

<<<PAGE 3>>>

David Be retta
Manager, Compliance & Regulatory
AMTROL Water Systems I Engineering
1400 Division Road
West Warwick, RI 02893
0 401.535.1252
David.Beretta@Worthingtonl ndustries. co m I NYSE: WOR
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From: Beretta, David
Sent: Tuesday, February 26, 2019 8:55 AM
To: 'infocntr@dot.gov'
Cc: Lafazia, Patricia; McKinley, Jody; Morey, Susan; Gentry, Steve; Newberry, Paul
Subject: RE: Clarification of 173.306(g) and DOT-SP11592 - Oregon D.O.T. [External]
Hello,
Please refer to Andrew Zikmund's earlier email, copied below.
Thank you for your help with this matter.
I will (try to:>)) be brief but would be very happy to expand if you want.
AMTROL's (and our competitor's) understanding from your ref. no. 09-0010 is that single trip shipment ("from
manufacturer/ distributor to the end-user") means that the package can make one trip to the place where it will be
installed with or without stops along the way as limited quantity as classified in 49CFR173.306(g).
The only th ing that may not be clear is the use of the virgule{//". According the dictionary I looked in that could mean
{/and", {/or" or both, indicating to me that whether the package goes directly or indirectly to the installation site, it is one
shipment and would stay classified as limited quantity.
During the trip the packages make, with or without stops along the way, the package or the strong overpack is not
modified in any way.
There have been no known incidents with the tens of millions of packages since they started shipping this way in the
1960s (I don't have an exact date or quantity).
Beside the Interpretation letter, AMTROL was audited by US DOT's Wayne Chaney on Feb 28, 2008. I was present for the
audit. He was extremely thorough reviewing all aspects of our packaging and its shipment. There was no issue with the
method of shipping as limited quantity all the way to the installation site, no matter the stops along the way.
If the interpretation of single trip shipment is changed it will create a large burden on AMTROL and increased cost to our
customers without increasing the level of safety during shipment.
My guess is that {/ single trip" shipment is used to prevent the packages from being used like several DOT specification
cylinders where most or all of the package life is spent {/on the road" (DOT39 and 4BA to my personal knowledge, we
manufacture those as well).
I would be grateful if I could speak with someone about this before any action is taken.
Thank you and have a good day.
2

<<<PAGE 4>>>

Best Regards,
Respectfully submitted,
David
David Beretta
Manager, Compliance & Regulatory
AMTROL Water Systems I Engineering
1400 Division Road
West Warwick, RI 02893
0 401.535.1252
David.Beretta@Worthingtonlndustries.com I NYSE: WOR
0 0 Ce O lZ'
From: ZIKMUND Andrew G [mailto :Andrew.G.ZIKMUND@odot.state.or.us]
Sent: Monday, February 25, 2019 5:47 PM
To: 'infocntr@dot.gov'
Cc: Beretta, David
Subject: FW: Clarification of 173.306{g) and DOT-SP11592 - Oregon D.O.T. [External]
Security Notice: External email. Think before you click!
Hello, I apologize for any inconvenience, I have tried the phone number 1-800-467-4922 several
different time today and have not been able to get through.
You will see in my email attached below from 2/20/19 that I requested clarification on 173.306(9) and
DOT-SP 11592.
My response from Brianna at PHMSA was very quick and much appreciated. In her verbal response
she explained that it was PHMSA's understanding that the shipments described would not meet the
exemption in 173.306(9) and because of that could not take advantage of the DOT-SP11592 simply
because of the movements described in the email from 2/20 were not "Single trip shipments to
installation sites".
That being said, the shipper I am currently working with (details attached) would like a written
response clarifying this. And in addition would like to know of an option to adjust this exemption in
173.306(9) (or the interpretations of 173.306(9)) to fit their common practice of hauling the shipments
described below.
Because this interpretation will dramatically affect such large business practices who have been
shipping these shipments for so many years I would assume it could be the basis for the shipper to
apply for a separate DOT-SP? For the same reasons I would like to ensure we have a clear outline
for compliance for this shipper and the many others who ship these products in the United States.
3

<<<PAGE 5>>>

I would appreciate if you could respond either to myself or most importantly to the shipper in question
with the written clarification of my original question. Also if you could provide information relating to
options they may have to further ship the material.
Shipper contact:
David Beretta
Manager, Compliance & Regulatory
AMTROL Water Systems Engineering
1400 Division Road
West Warwick, RI 02893
0 401 .535.1252
David.Beretta@worthingtonindustries.com
Thank you all for your time with this complicated issue. I appreciate all the help.
Andrew Zikmund
HM Compliance Specialist
Motor Carrier Safety
Phone : (541) 869- 2904 Fax : (541) 869 - 2026
From: ZIKMUND Andrew G
Sent: Wednesday, February 20, 2019 5:52 PM
To: 'infocntr@dot.gov' <infocntr@dot.gov>
Subject: Clarification of 173.306{g) and DOT-SP11592 - Oregon D.O.T.
Hello, My name is Andy Zikmund. I am a Hazardous Materials compliance specialist for the Oregon
D.O.T.
I am writing to clarify the applicability of 173.306(9) and DOT-SP11592.
My situation is:
A motor carrier is loading 98 water pump system tanks containing "UN1956, Compressed Gas, NOS
(air with up to 15% Helium) 2.2" shipped at 38psi ea. weighing roughly 112 lbs. ea. from a the
manufacturers facility (Amtrol Inc.) in Rhode Island to three separate distribution/ retail locations in
Washington state.
After they are delivered they are stored at the distribution/ retail facilities until a customer purchases
them for their home or business.
The motor carrier in question is shipping these tanks with the understanding that they meet the
exception found in 173.306(9). And also is under the assumption that DOT-SP11592 applies to this
shipment.
4

<<<PAGE 6>>>

After reading 173.306(9), DOT-SP11592 and PHMSA interpretation reference# 09-0010 dated March
26, 2009. It is my understanding that shipment described above (98 water pump system tanks
containing UN1956, Compressed Gas, NOS (air with up to 15% Helium) 2.2 shipped at 38psi ea
weighing roughly 112 lbs ea) would not meet the exception in 173.306(9) and therefore the DOT-
SP11592 would not apply to this shipment either. I came to this conclusion because the wording
used in 173.306(9) specifically states "single trip shipments to installation sites". After reading the
PHMSA interpretation 09-0010 which even more clearly defines that term saying "it means the one-
time movement of tanks from the facility from which they are purchased to the site where they will be
installed" it is my understanding that the above described shipment can-not take advantage of this
exception in 173.306(9) or the DOT-SP11592.
Could you please respond clarifying if my understanding is correct, or if I am interpreting this
incorrectly. Also, can you clarify that the DOT-SP 11592 is only an exception allowed for carriers that
meet the exception in 173.306(9).
Sorry for the long email © Thanks for your time.
Andrew Zikmund
HM Compliance Specialist
Motor Carrier Safety
Phone: (541) 869-2904 Fax: (541) 869-2026
5

<<<PAGE 7>>>

Pentair Water Group, Inc.
John F. DI Leo
Import/Export Compliance Manager
450 Remington Rd., Schaumburg, IL 60173
John.DiLeo@Pentair-EP .C-Om
Toi: 847-466-8812
On behalf of all its ajfiliales and subsidiaries, including:
Sta-Rite Industries, LLC
293 Wright SI, Delavan, WI 53115
and
Pentair Pump Group Inc, DBA Myers Pump
110 I Myers Parkway, Ashland, OH 44805
Date:
To:
December 29, 2008 A.D.
Duane Pfund, Director
Office of International Standards
Pipeline and Hazardous Materials Safety Administration
U.S. Department of Transportation
1200 New Jersey Ave., S.E.
Washington, DC 20590
Duane.Pfund@DOT.gov, 202-366-06S6
Request for Letter of Interpretation for Ground Shipping under 49CFR 173.306(g)
Subject: Steel Water Pump System Tanks, 49CFR l 73 .306(g)
We are writing to request your support in clarifying an exception provided in 49CFR, for domestic shipment by ground
and water transport (it does not apply to airfreight).
We sell steel water pump system tanks, which are hooked up to a water pump in the basement or near a well to provide
proper water pressure for a home or other building. The tank accomplishes this by the use of a bladder that has been
pressurized, either with nitrogen or plain air, to a gauge pressure of about 38--40 psi. We are therefore not selling a
pressurized gas, as such ... we are selling an article which is pressurized for its functionality .
While these articles are totally safe - harmless - in transportation (they are tested and confinned safe up to 300 psi -
over seven times their working and shipping pressure), they do fall under the definition of a hazardous material
because of the definition for nonflammable compressed gas (40 psig + 1 bar== 54.7 psia) ... either UN1066 (when
nitrogen is used) or UN1002 (when plain air jg used).
We therefore ship them domestically under the Limited Quantity provision that was created specifically for these
products, in 49CFR 173.306(g). We only have one issue that is slightly unclear-the rnference to "single-trip
shipment" transportation, so we are writing to request a written clarification in the fonn of a DOT Letter of
Interpretation.
Request Details:
We stipulate that our steel water pressure system tanks do fully meet the requirements of 49CFR 173.306(g).
A reading of the initial permits that led to 49CFR 173 .306(g) seems to show that the "single-trip shipment" language
means only that the tank itself does not change - i.e. that the pre-charged gas stays in the one single packaging th~ough
the entire shipment - and does not prevent going from truck to truck- in multiple stages of shipment (i.e. from
manufacturer to distribution to dealer to end-user). Michael Stevens of PHMSA has verbally confirmed this
understa11ding.
Accordingly, we hereby ask that the DOT please confum in writing, through a Letter oflnterpretation, that we
understand the above correctJy: that this exception applies to multiple-stage shipment as long as tl1e tank is not further
altered after leaving our factory.

<<<PAGE 8>>>

History
Steel water pump system tanks are a $100 million-plus industry worldwide, with sales of approximately a million units
per year. We manufacture approximately a quarter of them here in the USA, producing critical jobs in Wisconsin and
revenue for our parent, Pentair Inc, a publicly held Minnesota-based holding company with a presence in over fifteen
states, employing some 13,000 worldwide.
Sta-Rite Industries has been in the water systems business since 1934, and has been making these water pump system
tanks for over 35 years. Our safety record with these products is excellent; we consider them to be totally safe, both in
transportation and in use. To the best of our knowledge, there has never been a transportation incident in which the
pressure of our tanks played any role at all.
We are amo11g the world 's leading producers of these products, and we employ approximately 800 employees in the
small rural town of Delavan, Wisconsin alone (population just over 8000). We want to be 100% compliant in our
shipping, and the clarification of the "single-trip shipment" clause will remove any doubt that we are.
Thank you for your consideration of this request.
Regards,
John F. Di Leo
Pentair Water Group, Inc.
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