{"operation":"document","citation":"99-0175","title":"Mr. C. Vleugels — Hazardous Materials Safety Interpretation","source_type":"guidance","agency":"Pipeline and Hazardous Materials Safety Administration","status":"guidance","official":true,"published_on":"1999-09-23","effective_on":null,"summary":"99-0175 concerning 171.8.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-interpretation-99-0175.json","markdown":"https://regulus.evalyn.ai/document/phmsa-interpretation-99-0175.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-interpretation-99-0175","source_url":"https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/legacy/interpretations/Interpretation%20Files/1999/990175.pdf","body":"<<<PAGE 1>>>\n\nof Transportation\nUS. Department\nWashington, D.C.\n400 Seventh Street, S.W.\n20590\nSpecial Programs\nResearch and\nAdministration\nSEP 2 3 1999\nMr. C. Vleugels\nRef. No. 99-0175\nVanHool N.V.\nBernard Van Hoolstraat 58\nB-2500 Lier Koningshooikt\nBelgium\nDear Mr. Vleugels:\nThis is in response to your letter dated June 25, 1999, requesting clarification on determining whether\nyour material, Sodium Sulfide, UN 1849, is a \"flowable\" or a \"non-flowable\" solid as it relates to\nprovisions in § 173.32c (g)(2) of the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-\n180).\nAs used in § 173.32c(g)(2), a \"flowable\" solid is a solid material (e.g., crystal, powder, pellet, etc.) that.\nmoves in a smooth and uninterrupted movement through the valves of a tank. Sodium Sulfide in its\ncrystal or powder form is considered a \"flowable\" solid if it flows freely through the valves. A \"non-\nflowable\" solid is a solid material in a cake or other solid form that does not flow in a smooth and\nuninterrupted movement through the tank valves. If moisture affects your material causing clumping or\nother solidification that interrupts free flow or movement through the valves of the tank; your material is\nconsidered a \"non-flowable\" solid.\nI hope this answers your inquiry.\nSincerely,\nDelmer F. Billings\nChief, Standards Development\nOffice of Hazardous Materials Standards\n990175\n\n<<<PAGE 2>>>\n\n99-0175\nVANTOOL\nBus and trailer manufacturers\n• Boothe .\n171.8 Liquid\nDepartment:\nSB IV\nUS Department of Transportation US.\nSolid\nContact:\nExtension:\n3414\nOffice of Hazardous Materials Standards\nOur reference:\nC. Vleugels\n400 Seventh Street, S.W.\nET/CV/ds - 99/297\nWASHINGTON D.C. 20590\nUSA\n• For the attention of Mr. Billings\nLier, the 25th June, 1999\nYour letter: ref. no. 22-0062\nDear Mr. Billings\n. Could you please explain us how we can determine whether a cortain solid (UN 1849 -\nSodium Sulfide) is a \"flowable\" or a \"non-flowable\" solid, especially in the context of provi-\nsion § 173.32c (g) (2).\nWe thank you in advance for your help and remain,\nwith kind regards\nVAN HOOL N.V.\nReusele\nC. VLEUGELS\nTEE TARYAANS\nal Manager\nVan Hool N.V.","truncated":false,"body_characters":2138}