Olin Corporation — Hazardous Materials Safety Interpretation

Page 1U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration 1200 New Jersey Avenue, SE Washington, DC 20590 March 28, 2024 Mr. Daniel T. Stein Fleet Equipment Lead Olin Corporation 490 Stuart Road, NE Cleveland, TN 37312-4918 Reference No. 22-0087 Dear Mr. Stein: This letter is in response to your August 19, 2022, letter requesting clarification of the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180) applicable to ownership of equipment when performing repairs, alterations, conversion, and modifications of rail tank cars and service equipment. We have paraphrased and answered your questions as follows: Q1. You ask whether the intent of § 180.513(b)—Responsibilities of Tank Car Facility— pertains to obtaining the permission of an equipment owner in a scenario where there are multiple owners of the assets (e.g., tank cars, liners, or service equipment). A1. Under § 180.513(b), “A tank car facility must obtain the permission of the equipment owner before performing work affecting alteration, conversion, repair, or qualification of the owner’s equipment.” If the tank car and/or the tank car service equipment have multiple owners, the tank car facility would need permission from all owners of said asset, or the owner of the affected equipment. Q2. You ask whether the service equipment owner or the tank car owner is responsible for establishing the interval for service equipment inspection and testing. A2. Under § 180.509(k)(1), “Each tank car owner must ensure the qualification of tank car service equipment at least once every ten (10) years.” As this is a minimum requirement, any service equipment inspection and test interval that is less than 10 years is allowed and may be initiated by the service equipment owner or the tank car owner. If either party—the service equipment owner or the tank car owner—is aware of inspection and#

Page 2test results that indicate that the design level of reliability and safety of the service equipment will not be met for a given inspection and test frequency, this information must be shared between the parties involved and an appropriate inspection and test frequency selected. I hope this information is helpful. Please contact us if we can be of further assistance. Sincerely, Steven Andrews Acting Chief, Regulatory Review and Reinvention Branch Standards and Rulemaking Division#

Page 3Pollack 22-0087 From: INFOCNTR (PHMSA) To: Hazmat Interps Subject: FW: Interpretation Request: 49 CFR Part 180 Subpart F Equipment Owner Duty Clarifications Date: Wednesday, August 24, 2022 12:51:24 PM Attachments: image001.png USDOT-PHMSA Request for Interpretation.pdf See attached/below request for interpretation. Thanks, Jonathon, HMIC From: Stein, Daniel T CLEV <DTStein@olin.com> Sent: Friday, August 19, 2022 10:59 AM To: INFOCNTR (PHMSA) <INFOCNTR.INFOCNTR@dot.gov> Subject: RE: Interpretation Request: 49 CFR Part 180 Subpart F Equipment Owner Duty Clarifications 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. I should have noted, my original message did not go through to the interpretations mailbox, so appreciate your help in routing this request. Daniel Stein Fleet Equipment Lead C: (859) 240-1753 DTStein@Olin.com From: Stein, Daniel T CLEV Sent: Friday, August 19, 2022 10:57 AM To: INFOCNTR.INFOCNTR@dot.gov Subject: FW: Interpretation Request: 49 CFR Part 180 Subpart F Equipment Owner Duty Clarifications Please see below & attached. Thank you. Daniel Stein Fleet Equipment Lead C: (859) 240-1753 DTStein@Olin.com#

Page 4From: Stein, Daniel T CLEV Sent: Friday, August 19, 2022 10:51 AM To: 'hazmatinterps@dot.gov' <hazmatinterps@dot.gov> Cc: Baxter, Christopher M MCIN <CMBaxter@olin.com>; Mills, Michael K CLEV <MKMills@olin.com>; Vain, Brian D HOUS <BDVain@olin.com>; Castle, Angela M HOUS <AMCastle@olin.com> Subject: Interpretation Request: 49 CFR Part 180 Subpart F Equipment Owner Duty Clarifications Hello, Please find the attached inquiry, and thank you in advance for your time. Daniel Stein Fleet Equipment Lead (O) 423.336.4206 DTStein@Olin.com The information contained in this e-mail message is intended only for the personal and confidential use of the recipient(s) named above. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this message and any attachments in error and that any review, dissemination, distribution, copying or alteration of this message and/or its attachments is strictly prohibited. If you have received this message in error, please notify the sender immediately by electronic mail, and delete the original message. --- Les informations contenues dans ce message électronique sont destinées uniquement à l'usage personnel et confidentiel du ou des destinataires désignés ci-dessus. Si le lecteur de ce message n'est pas le destinataire prévu ou un agent chargé de le remettre au destinataire prévu, vous êtes informé par la présente que vous avez reçu ce message et toute pièce jointe par erreur et que toute révision, diffusion, distribution, copie ou modification de ce message et/ou de ses pièces jointes est strictement interdite. Si vous avez reçu ce message par erreur, veuillez en informer immédiatement l'expéditeur par courrier électronique et supprimer le message original.#