# Complete Compliance Services — Hazardous Materials Safety Interpretation

- **operation:** document
- **citation:** 14-0098
- **title:** Complete Compliance Services — Hazardous Materials Safety Interpretation
- **source type:** guidance
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** guidance
- **official:** true
- **published on:** 2014-12-03
- **effective on:** Not available
- **summary:** 14-0098 response to Complete Compliance Services concerning 172.102, 173.168, 173.56.
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-interpretation-14-0098.json
- **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-14-0098.md
- **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-14-0098
- **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/2014/140098.pdf
**body:**

<<<PAGE 1>>>

U.S. Department
of Transportation
1200 New Jersey Avenue, SE
Washington, D.C. 20590
Pipeline and Hazardous
Administration
Materials Safety
DEC 1 3 2014
Mr. Len Satkowski
Principal
Complete Compliance Services
7727 Parkside Ave.
Burbank, IL 60459
Ref. No.: 14-0098
Dear Mr. Satkowski:
This responds to your May 15, 2014 letter requesting clarification of the Hazardous
Materials Regulations (HMR; 49 CFR Parts 171-180) applicable to oxygen generators. Your
scenarios and questions are summarized and addressed as follows:
Q1: You have a customer that assembles and ships Passenger Service Units (PSU)
containing oxygen generators but does not place the EX numbers on the PSU package. You
ask if the outside package must be marked with the EX approval number associated with the
individual oxygen generator contained within.
Al: The answer is no. As specified in § 173.168, there is no requirement to place the EX
number on an outside package containing a chemical oxygen generator. However, under §
173.168(d), the outside surface of equipment containing a chemical oxygen generator that is
not readily apparent (e.g., a sealed passenger service unit) must be clearly marked to indicate
the presence of the oxygen generator (example: "Oxygen Generator Inside").
Q2: The company referenced above has an affiliated company that manufactures chemical
oxygen generators and has several EX numbers. Each time the affiliated company creates a
new stock number it applies for a new EX number although the same explosives/primer is
used in all other generators. You ask when is a new EX number required for chemical
oxygen generators?
A2: As provided in § 173.56(a)(2), a previously approved explosive (or new oxygen
generator) with a design change is considered a new explosive and must be examined and
approved by the Associate Administrator under the provisions of Part 107 Subpart H.
However, if the chemical oxygen generator retains the exact same design and drawing
number as approved under the EX approval, a change in a part number would only require a
modification under § 107.709.

<<<PAGE 2>>>

Q3:
You ask if, prior to the final rule entitled "Chemical Oxygen Generators" under
Docket No. PHMSA-2009-0238 (HM-224G) published on October 15, 2009 [74 FR
5289], PSU manufactures were required to display the Competent Authority (CA)
number on a shipment of a PSU which was not in compliance with EX number
requirements.
A3:
The answer is yes. Prior to the publication of HM-224G, the CA number was required
to be marked on the outside packaging per Special Provision 60 of § 172.102, Special
Provisions.
You ask if the PSU manufacturer is required to put an EX number on the outer
package of the oxygen generator since it does not make the oxygen generator. You
state that the outer package meets all of the marking requirements in § 173.168.
A4:
See Al.
You ask in the event a PSU containing a chemical oxygen generator needs to be
returned to the manufacturer, may you use the EX number provided to the generator
maker?
A5:
The answer is yes. The manufacturer's EX number may be utilized on the PSU
containing a chemical oxygen generator for shipments returned to the manufacturer.
I trust this satisfies your inquiry. Please contact us if we can be of further assistance.
Sincerely,
I Ann Fost
T. Glenn Foster
Chief, Regulatory Review and Reinvention Branch
Standards and Rulemaking Division
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<<<PAGE 3>>>

Andrews
$173.56.
• Drakeford, Carolyn (PHMSA)
Explosives
Sent:
From:
Monday, May 19, 20148:40 AM
Foster, Glenn (PHMSA)
14-0098
To:
Cc:
Drakeford, Carolyn (PHMSA)
(PHMSA); Goodall, Shante CTR (PHMSA)
Betts, Charles (PHMSA); Benedict, Robert (PHMSA); Kelley, Shane (PHMSA); Doda, Alice
Subject:
FW: EX numbers for Oxygen Generators
Importance:
High
Carolyn,
Please check in the attached as a formal request for a letter of interpretation and assign.
Thanks,
Glenn
From: Fink, William (PHMSA)
Sent: Friday, May 16, 2014 11:46 AM
To: Len Satkowski (len.satkowski@gmail.com)
Subject: FW: EX numbers for Oxygen Generators
Importance: High
Mr. Satkowski,
Thank you for allowing me to ask some clarifying questions and chat concerning the shipment of 02 Generators in PSU's.
My quick comments follow, an official response will be provided via an interpretation letter.
1. PSU's are shipped clearly marked "Oxygen Generator Inside" does the PSU and the outside packaging also need
to be marked with the EX approval number associated with the individual 02 Generator contained
therein? PHMSA will research and answer the question via an interpretation letter to be issued at a later date.
2. The definition of a new explosive (or new 02 generator) is found in 49 CFR 173.56, design changes that meet the
definition of a new explosive must be submitted to a US DOT Explosives test lab for evaluation. When the part
does not change, new part number only, that is the exact same design, made to the exact same drawing number,
as the 02 Generator already approved, the manufacture of the 02 Generator must apply for a "part
number/name change" modification in accordance with 49 CFR 107.709.
3. Researching CA approvals initially issued for 02 Generators, the CA (Competent Authority) number was required
to be marked on the outside packaging.
4. Statement- no action required.
5. See 1 above.
6. EX numbers are issued to manufacturers of the 02 Generators. The manufacturer's EX number may be utilized
when offering a 02 Generators for transportation.
We further discussed the process associated with assembling a PSU:
a. Personnel assembling PSU's pull from the warehouse the appropriate 02 generator from the storage shelf.
b. O2 Generators stored on the shelf are not stored with their associated EX number as no EX number is marked on
the 02 Generator. (What EX applies is therefore in question.)
c. Personnel assembling the PSU's have no way of knowing what EX number is associated with the PSU they just
pulled from the shelf.
1

<<<PAGE 4>>>

d. No EX number is marked on the PSU, marked on the PSU is "Oxygen Generator Inside"
• (Should all PSU's be
required to be permanently marked with the associated EX number)
Again your questions will be forwarded to our Standards Group for a formal response.
Bill Fink
From: Len Satkowski [mailto:len.satkowski@gmail.com]
To: Fink, William (PHMSA)
Sent: Thursday, May 15, 2014 10:05 AM
Importance: High
Subject: EX numbers for Oxygen Generators
Bill
following is my dilemma:
We talked several days ago regarding explosive testing for 02 generators and the assignment of EX numbers under 173.56. The
1. I have a customer that assembles and ships Passenger Service Units (PSU) containing 02 generators and they are like all
manufactures of PSUs not placing EX numbers on packages of PSUs.
2. This company has a sister company that manufactures the 02 generators and has several EX numbers. Each time they
make a new stock number they apply for a new EX number even though the explosive/primer involved is the same as
being used in all other generators.
3. Prior to the adoption of HM 224F, the PSU manufacture had like all manufactures had CA numbers to cover the
shipment of the PSU which did not make reference to EX requirements.
4. Both companies meet the packaging requirements of 49 CFR 173.168(d)
5. Does the PSU manufacture need to put an EX number on the outer package of the 02 generator since they do not make
02 generator? The outer package meets all of the marking requirements of 173.168.
6. In the event the PSU people need to return an 02 generator to the generator, may they use the EX number provided to
the generator maker, or do they need to file for party status to the EX number?
Bill I would appreciate a prompt response as this effects thousands of shipments a month by all modes of transportation, both
domestically and internationally, not to mention PSUs containing 02 generators being returned from airlines to FAA repair
stations. Thanks again for your time. Below is my contact information.
Len
Len Satkowski
Principal
Complete Compliance Solutions
7727 Parkside Ave
Burbank, IL 60459
Len.satkowski@gmail.com
312-515-4446
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