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Section §172.102: Special provisions

Below are the available interpretations and guidance for the given section. To return to the list of parts, use the Parts link above. If you do not see any guidance or interpretation information below, that means there is none available for the given part/section. Return to the search page to browse additional regulations sections.

PHMSA has published several Frequently Asked Questions (FAQ) documents on regulatory topics. Please review our FAQ documents below:

Additionally PHMSA has Hazardous Materials FAQs based on letters of interpretation on the following topics:

This section of the website provides the ability to find regulations information including regulations parts, content of sections, and interpretations for regulations sections. Below is a list of parts, identified by the part number and subject. To browse sections by part, click on the subject link below. You will be taken to the eCFR website to view sections for a part.

A written regulatory interpretation, response to a question, or an opinion concerning a pipeline safety issue may be obtained by submitting a written request to the Office of Pipeline Safety (PHP–30), PHMSA, U.S. Department of Transportation, 1200 New Jersey Avenue SE., Washington, DC 20590–0001 or at the email address: In addition to email address, the requestor must include his or her return address and should also include a daytime telephone number. Requests should be submitted at least 120 days before the time the requestor needs a response.

Note: electronic submission is provided as alternative to the 49 CFR Part 190.11(b) mail-in requirement.

The regulations text of the section can be found on the eCFR website. To view the regulations text, use the link below. For assistance, please send an email to

View section 172.102 on the ECFR website

Interpretation Responses

Ref ID Date Company Name Individual Name Response Document
23-0101 NRS Ocean Logistics Ltd. Ms. Nicole Enright View
23-0093 Transportation Development Group Jim Powell View
23-0079 Hazmat Safety Consulting, LLC Ryan Paquet View
23-0015 UralKali Trading Marcel Cisneros View
22-0118 Tanner Industries, Inc. James Klucsarits View
22-0013 DuPont EHS Center of Excellence Mr. Jeffrey D. Shields View
22-0131 Powin Thomas Kerr View
22-0086 Fujitrans USA Inc. Laura Warren View
22-0090 Hunting Titan Joseph Murphy View
21-0095 DynaEnergetics US Inc. Mr. Ed Zinsmeyer View
21-0037 Law Offices of Steven W. Hansen Steven W. Hansen View
20-0096 NEX-XOS Worldwide, LLC Saul Mishkin View
21-0013 Hunting Titan Joseph Murphy View
21-0017 The Sulphur Institute Craig Jorgenson View
20-0058 DHL Global Forwarding Dennis Raymund V. Franco View
19-0138 Gorick Construction Co., Inc. Alfred Gorick View
19-0088 TerraTrike Lisa Permesang View
19-0057 Dangerous Goods Transport Consulting, Inc. Frits Wybenga View
19-0072 C. Steinweg, Inc. John Moors View
18-0154 Commercial Vehicle Safety Alliance Collin B. Mooney View
18-0155 Canal Terminology Company Cindy Van Duyne View
18-0090 American Bureau of Shipping (ABS) Mr. Michael R. Kloesel View
18-0119 Cascade Asset Management, LLC John Sorrel Weakland View
18-0113 Autoliv ASP, Inc. Dave Madsen View
18-0051 Florida Power and Light Company Frank Nesbihal View
18-0009 The Chemours Company Randolph Martin View
17-0047 Rob Scott View
07-0191 Zippo Manufacturing Mr. David H. Baker View
01-0113 Fisher Scientific Company L.L.C Mr. Craig E. Phillips View
16-0080 Technology Solutions Mr. William Weddle View
03-0181 R and J Trucking Mr. Daniel J. Fire View
07-0184 Environmental Containment Solutions Mr. Roger Davies   View
02-0073 AllTransPack, Inc. Hank Baird View
98-0286 Polar Service Centers Mr. Mark Hughes View
98-0407 Big T Transfer Inc. Ms. Lisa Smith View
02-0210 Phil Vonderwell View
03-0226 Dinda & Associates, Inc. Mr. John F. Dinda, Jr. View
05-0097 Georgia Gulf Sulfur Corporation Mr. Jerry J. Jennett View
98-0408 ALM Safety Associates Mr. Allen L. Mossman View
04-0139 Dukane Corporation Mr. Thomas A. Green View
05-0286 Service Transport Group Inc Mr. Thomas Guadet View
12-0195 Philips Respironics Mr. Joseph E. Olsavsky View
98-0409 Vessels Limited Mr. Martin Laverty View
10-0238 URS Corporation Ms. Erin Jarman View
15-0057 Clean Pack Training and Development Mr. Kevin S. Young View
08-0006 SIEMENS Building Technogies, Inc. Mr. Adam Jablonski View
16-0189 CTI and Associates, Inc. Ms. Terri Zick View
08-0056 Imperial Freight Brokers, Inc. Mr. Robert A. Becker View
14-0120 RADIAC Program Operations Mr. Melvin J. Simon View
08-0059 The Fertilizer Institute Ms. Pam Guffain View
16-0067 Mr. Francis J. Mendez View
07-0211 Akzo Nobel Chemicals, Inc. Mr. Mark Connolly View
14-0173 Sika Corporation USA Mr. Arthur Van Houten View
08-0060 Cryogenic Equipment and Services, LLC Mr. John D. Upperman View
98-0364 Toth Aluminum Corporation Mr. Charles Toth, Jr. View
07-0183 Leiter & Cramer PLLC Mr. Adam B. Cramer View
14-0203 The Cryo Guys Mr. Mike Tomasek View
16-0012 Patterson Companies, Inc Mr. Robb Boros View
98-0217 Polar Service Centers Mr. Mark Hughes View
99-0302 Howrey and Simon Mr. David B. Weinberg View
14-0209 BASF Corporation Mr. Gregory R. Knauf View
05-0291 Environmental Waste Specialist, Inc Ms. Elizabeth Novak View
08-0248 American Trucking Associations Mr. Richard Moskowitz View
02-0115 Zee Medical, Inc. Kevin Lloyd View
08-0296 Kott Koatings, Inc. Mr. John M. Kott View
07-0194 HAZMATEAM, Inc. Mr. Paul J. Dambek View
98-0329 Alcoa - Mt. Holly Mr. Gordon J. Sarver View
15-0153 Photosol, Inc. dba Photographic Solutions Mr. David Stone View
03-0081 NOVA Chemicals Inc. Mi. Dean Pettibon View
07-0062 Wisconsin Department of Natural Resources Ms. Gretchen S. Wheat View
06-0175 Hazardous Material Distribution Consultant Mr. Randolph Martin View
09-0210 A123 Systems Mr. C. Michael Hoff View
06-0205 Kajuligan Corporation Mr. Cliff Croft  View
05-0048 NSWC Crane Division Mr. Charles Kimble View
10-0128 Aleris International, Inc Mr. Kenneth J. Willings View
06-0207 Fisher Scientific International, Inc. Mr. Gene Sanders View
14-0089 URS Corporation Mr. Andrew Romach View
14-0146 Det-Tronics Mr. Lee Zwiefelhofer View
14-0098 Complete Compliance Services Mr. Len Satkowski View
14-0197 Philips Respironics Ms. Collen Witt View
09-0249 Dangerous Goods United Airlines Ms. Nancy Finkenkeller View
17-0007 Schuster Metals, LLC Mr. John Lehman and Mr. Samuel Essak View
08-0019 Mr. Charles W. Guthrie View
08-0032 Invacare Corporation Ms. Carroll Martin View
06-0256 REGSCAN, Inc. Mr. Russ Shanahan View
07-0047 Fluoro-Seal International Mr. Paul J. Crook View
07-0054 FedEx Express Mr. Marvin A. Sudduth View
06-0013 Pennsylvania Department of Environmental Protection Mr. Frederick P. Walter, Jr. View
04-0063 Belshire Environmental Services, Inc. Mr. Glen VanderVeen View
01-0224 URS Corporation Mr. Andrew N. Romach View
08-0151 Van Hool NV Mr. Chris Vleugels View
09-0046 Honeywell Ms. Claire Matlon Leader View
09-0025 The Wicks Group, PLLC Mr. Lindsay W. McGuire View
08-0290 Sensitech, Inc. Mr. Henry Ames View
08-0145 Veolia Environmental Services Ms. Jennifer Eberle View
04-0195 General Hydroponics Mr. Cal Herrmann ScD View
05-0191 Industrial Health and Safety Consultants, Inc. Denese A. Deeds, CIH View