# TMC Engineering Services Inc. — Hazardous Materials Safety Interpretation

- **operation:** document
- **citation:** 22-0082
- **title:** TMC Engineering Services Inc. — Hazardous Materials Safety Interpretation
- **source type:** guidance
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** guidance
- **official:** true
- **published on:** 2022-09-23
- **effective on:** Not available
- **summary:** 22-0082 response to TMC Engineering Services Inc. concerning 179.7.
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- **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-22-0082.md
- **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-22-0082
- **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/docs/standards-rulemaking/hazmat/interpretations/76766/220082_1.pdf
**body:**

<<<PAGE 1>>>

U.S. Department
of Transportation
Pipeline and Hazardous
Materials Safety
Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
September 23, 2022
R.G. Ashton
Director of Quality Assurance and Regulatory Compliance
TMC Engineering Services Inc.
2335 Wadsworth Street
Houston, TX 77015
Reference No. 22-0082
Dear Mr. Ashton:
This letter is in response to your August 15, 2022, email requesting clarification of the
Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180) applicable to tank car facility
procedures and recordkeeping. You describe a scenario in which certain documents (e.g., quality
assurance program policies and procedures, AAR approvals, tank car owner’s acceptance
criteria, engineering drawings, etc.) are maintained in an electronic database at the tank car
facility. Furthermore, you state that the electronic database is easily accessible to employees at
designated computers throughout the tank car facility. You ask whether these documents—which
are maintained in the specified electronic database format—meet the requirements of
§ 179.7(b)(5) and (d).
The answer is yes. Although the provisions in § 179.7 refer to written procedures, they are not so
restrictive that the procedures must be provided in paper form—rather the reference to written
procedures is to ensure a permanent record for use of the procedures. A tank car facility may
maintain the documents required by § 179.7 in an electronic or paper format. Please note that
whichever format is implemented, the tank car facility is responsible for ensuring that the
documents are both stored properly and accessible for use by employees—ensuring work on the
tank car conforms to the specification, AAR approval, and owner’s acceptance criteria.
I hope this information is helpful. Please contact us if we can be of further assistance.
Sincerely,
Dirk Der Kinderen
Chief, Standards Development Branch
Standards and Rulemaking Division

<<<PAGE 2>>>

Patrick
22-0082
From: INFOCNTR (PHMSA)
To: Subject: Date: Dodd, Alice (PHMSA); Hazmat Interps
FW: Mr. Shane Kelly Request Letter of Interpretation (179.7)
Monday, August 15, 2022 4:32:25 PM
Attachments: 081522-80 Request LOI.pdf
Hello Alice,
Please see the request for an LOI below. Thank you.
Rachel (HMIC)
From: R.G. Ashton <rg_ashton@tmces.com>
Sent: Monday, August 15, 2022 9:58 AM
To: PHMSA HM InfoCenter <PHMSAHMInfoCenter@dot.gov>
Subject: Mr. Shane Kelly Request Letter of Interpretation (179.7)
CAUTION: This email originated from outside of the Department of Transportation (DOT). Do
not click on links or open attachments unless you recognize the sender and know the content
is safe.
R.G. Ashton
Director of Quality Assurance and Regulatory Compliance
TMC Engineering Services Inc.
2335 Wadsworth Street
Houston, TX 77015
Office: 281-452-1541 Ext 21
Mobil: 281-900-9212
Fax: 281-452-5269
Website: www.tmces.com

<<<PAGE 3>>>

TMC ENGINEERING SERVICES INC.
Memo
File No. 081422-80
Shane Kelley
Director, Standards and Rulemaking Division
U.S. DOT/PHMSA (PHH-10)
1200 New Jersey Avenue, SE East Building, 2nd Floor
Washington, DC 20590
Request Letter of Interpretation: HMR 49 CFR Parts 171-180, 179.7 (12)(d)
Mr. Kelly,
TMC Engineering Service Inc. (TMC) request a letter of interpretation regarding the applicability of Part 179 of
the Hazardous Materials Regulations [HMR 49 CFR Parts 171-180] specifically 179.7 (12)(d) which in part states,
each tank car facility shall provide written procedures to its employees to ensure that the work on the tank car
conforms to the specification, AAR approval, and owner’s acceptance criteria. TMC provide employees;
physical, paper-based printed work orders (job-traveler) including forms to sign-off completed task(s), also
included are instructions, the title and identification of the procedure to use per the inspection and test plan.
Additionally, the Quality Assurance Department controls and maintains electronic/digitized formatted procedures,
reports, and forms on the TMC’s NAS [Network-Attached Storage] share drive. The NAS drive contains the TMC
QAP manual policies and procedures, AAR approvals, tank car owner’s acceptance criteria, engineering drawings,
relevant and essential documents for specific task(s). All employees can easily obtain and read this information
from available computers located at designated work cell locations. Except, to the extent that 179.7 (12)(5) neither
mentions nor impart the use of digitized electronic written procedures. Notwithstanding, our question than is
whether today’s widely adopted technologies such as digitized electronic written procedures (as mentioned above)
in compliance with 179.7 (12)(5)?
Please contact me if you have any further questions.
Respectfully Submitted
R.G. Ashton
Director of Quality Assurance and Regulatory Compliance
TMC Engineering Services Inc.
2335 Wadsworth Street
Houston, TX 77015
Office: 281-452-1541 Ext 21
Mobil: 281-900-9212
Fax: 281-452-5269
Website: www.tmces.com
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