Smart-Hose Technologies — Hazardous Materials Safety Interpretation

Page 1U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration 1200 New Jersey Ave, SE Washington, D.C. 20590 NOV 3 2010 Ms. Andrea Guevara Smart-Hose Technologies P.O. Box 16828 Philadelphia, P A 19142 Ref. No.: 10-0198 Dear Mr. Guevara: This responds to your September 3, 2010 letter requesting clarification of the emergency discharge control requirements for cargo tank motor vehicles (CTMVs) under the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180). You have attached a guidance document intended to be distributed to your clients for compliance assistance. The guidance document summarizes the passive shut-down requirements in § 173.315(n) and includes a list of materials that would require passive shut-down capability under the HMR. Specifically, you ask confirmation that the list of proper shipping names in your guidance document accurately identifies materials that would require passive shut-down capability under § 173.315(n). The table in § 173.315(n)(I) specifies emergency discharge control requirements for CTMV s in liquefied compressed gas service. The requirements are specific to the type of material being transported, the type of service (Le., metered delivery or unmetered delivery), and whether the person attending the unloading operation has an unobstructed view ofthe cargo tank and delivery hose. PHMSA is supportive ofyour efforts to list all of the materials and the circumstances that would require a passive shut-down capability in accordance with §§ 173.315(n)(I) and (n)(2) in a single guidance document to assist your clients with compliance. However, it is not PHMSA's policy to review, approve, or endorse specific guidance documents developed and published by nongovernment entities. I trust this satisfies your inquiry. Please contact us ifwe can be of further assistance. Sincerely, ~~ Ben Supko Acting Chief, Standards Development Office ofHazardous Materials Standards#

Page 2f:i ()~ tn IClUb Stuart-Hose' ~/13. 3/5(ni?) • CarSo T@J. ~TECHNOLOGIES~ • September 3, 2010 Charles E. Betts Chief, Standards Development U.S. DOT PHMSA Office of Hazardous Materials Standards 1200 New Jersey Avenue, SE. Washington, DC 20590-0001 RE: Request for Letter ofInterpretation Dear Mr. Betts; As a manufacturer of an approved passive shutoff device hose assembly we would like to assist our customers with their regulatory compliance activities. We have conducted a review of 49 CFR 173.315 (n)(2), specifically regarding which chemicals are included in the mandate for a passive shutoff device. Our review has resulted in the attached list of materials. We would like to receive confirmation that our list is correct before we begin using the list to assist our customers. Your review and comments would be greatly appreciated. Thank you. Sincerely, ~.~ Andrea Guevara President Mail to: P.O. Box 16828' Philadelphia, PA 19142, USA Ship To: 701 Ashland Avenue, Building 22, Suite 11 • Folcroft, PA 19032, USA' Tel: 215.730.9000' Fax: 215-730-0558 www.smarthose.com A Zena Associates LLC Company#

Page 3- - ---_.-- . §173.315(n)(I)(*) ~ ~ Material Delivery service Required emergency discharge control capability (i) Division 2.2 materials with no subsidiary hazard, excluding anhydrous ammonia. All None (ii) Division 2.3 materials All Paragraph (n)(2) ofthis section. (iii) Division 2.2 materials with a subsidiary hazard, Division 2.1 materials, and anhydrous ammonia. Other than metered delivery service. Paragraph (n)(2) of this section. (iv) Division 2.2 materials with a subsidiary hazard, Division 2.1 materials, and anhydrous ammonia in a cargo tank motor vehicle with a capacity of13,247.5 L (3,500 water gallons) or less. Other than metered delivery service. Paragraph (n)(3) ofthis section. (v) Division 2.2 materials with a subsidiary hazard, Division 2.1 materials, and anhydrous ammonia in a cargo tank motor vehicle with a capacity greater than 13,247.5L (3,500 water gallons). Other than metered delivery service. Paragraph (n)(3) ofthis section, and, for obstructed view deliveries where permitted by § 177.840(P) of this subchapter, paragraph (n)(2) or (n)(4) of this section. (vi) Division 2.2 materials with a subsidiary hazard, Division 2.1 materials, and anhydrous ammonia in a cargo tank with a capacity of greater than 13,247.5 L (3,500 water gallons). Both metered delivery and other than metered delivery service. Paragraph (n)(2) ofthis section, provided the system operates for both metered and other than metered deliveries; otherwise, paragraphs (n)(2) and (n)(3) ofthis section. I#

Page 4Chemicals required to have a passive shutoffdevice: Anhydrous Ammonia - other than metered delivery or metered delivery >3500 water gallons and, for obstructed view deliveries where permitted by § 177.840(P) Division 2.3 materials - all types ofdelivery Organic phosphate, mixed with compressed gas or Organic phosphate compound, mixed with compressed gas or Organic phosphorus compound, mixed with compressed gas Parathion and compressed gas mixture Gas identification set Carbon monoxide, refrigerated liquid (cryogenic liquid) Ammonia, anhydrous Boron trifluoride Carbon monoxide, compressed Chlorine Coal gas, compressed Cyanogen Ethylene oxide or Ethylene oxide with nitrogen up to a total pressure of IMPa (10 bar) at 50 degrees C Fluorine, compressed Hydrogen bromide, anhydrous Hydrogen chloride, anhydrous Hydrogen sulfide Methyl bromide Methyl mercaptan Dinitrogen tetroxide Nitrosyl chloride Oil gas, compressed Phosgene Sulfur dioxide Trifluorochloroethylene, stabilized Chloropicrin and methyl bromide mixtures Chloropicrin and methyl chloride mixtures Cyanogen chloride, stabilized Hexaethyl tetraphosphate and compressed gas mixtures#

Page 5Nitric oxide, compressed Boron trichloride Chlorine trifluoride Silicon tetrafluoride Diborane Compressed gas, toxic, flammable, n.o.s. Inhalation Hazard Zone A Compressed gas, toxic, flammable, n.o.s. Inhalation Hazard Zone B Compressed gas, toxic, flammable, n.o.s. Inhalation Hazard Zone C Compressed gas, toxic, flammable, n.o.s. Inhalation Hazard Zone D Compressed gas, toxic, n.o.s. Inhalation Hazard Zone A Compressed gas, toxic, n.o.s. Inhalation Hazard Zone B Compressed gas, toxic, n.o.s. Inhalation Hazard Zone C Compressed gas, toxic, n.o.s. Inhalation Hazard Zone D Insecticide gases, toxic, n.o.s. Nitric oxide and dinitrogen tetroxide mixtures or Nitric oxide and nitrogen dioxide mixtures Hydrogen chloride, refrigerated liquid Arsine Dichlorosilane Oxygen difluoride, compressed Sulfuryl fluoride Germane Selenium hexafluoride Tellurium hexafluoride Tungsten hexafluoride Hydrogen iodide, anhydrous Phosphorus pentafluoride Phosphine Hydrogen selenide, anhydrous Carbonyl sulfide Carbonyl fluoride Sulfur tetrafluoride Hexafluoroacetone Nitrogen trioxide Methylchlorosilane Chlorine pentafluoride Stibine#

Page 6Bromine chloride Trifluoroacetyl chloride Perchloryl fluoride Liquefied gas, toxic, flammable, n.O.s. Inhalation Hazard Zone A Liquefied gas, toxic, flammable, n.o.s. Inhalation Hazard Zone B Liquefied gas, toxic, flammable, n.o.S. Inhalation Hazard Zone C Liquefied gas, toxic, flammable, n.o.s. Inhalation Hazard Zone D Liquefied gas, toxic, n.o.s. Inhalation Hazard Zone A Liquefied gas, toxic, n.o.s. Inhalation Hazard Zone B Liquefied gas, toxic, n.o.s. Inhalation Hazard Zone C Liquefied gas, toxic, n.o.s. Inhalation Hazard Zone D Gas sample, non-pressurized, toxic, flammable, n.o.s., not refrigerated liquid Gas sample, non-pressurized, toxic, n.o.s., not refrigerated liquid Ethylene oxide and carbon dioxide mixture with more than 87 percent ethylene oxide Compressed gas, toxic, oxidizing, n.o.s. Inhalation Hazard Zone A Compressed gas, toxic, oxidizing, n.o.s. Inhalation Hazard Zone B Compressed gas, toxic, oxidizing, n.o.s. Inhalation Hazard Zone C Compressed gas, toxic, oxidizing, n.o.s. Inhalation Hazard Zone D Compressed gas, toxic, corrosive, n.o.s. Inhalation Hazard Zone A Compressed gas, toxic, corrosive, n.o.s. Inhalation Hazard Zone B Compressed gas, toxic, corrosive, n.o.s. Inhalation Hazard Zone C Compressed gas, toxic, corrosive, n.o.s. Inhalation Hazard Zone D Compressed gas, toxic, flammable, corrosive, n.o.s. Inhalation Hazard Zone A Compressed gas, toxic, flammable, corrosive, n.o.s. Inhalation Hazard Zone B Compressed gas, toxic, flammable, corrosive, n.o.s. Inhalation Hazard Zone C Compressed gas, toxic, flammable, corrosive, n.o.s. Inhalation Hazard Zone D Compressed gas, toxic, oxdizing, corrosive, n.o.s. Inhalation Hazard Zone A Compressed gas, toxic, oxidizing, corrosive, n.o.s. Inhalation Hazard Zone B Compressed gas, toxic, oxidizing, corrosive, n.o.s. Inhalation Hazard Zone C Compressed gas, toxic, oxidizing, corrosive, n.o.s. Inhalation Hazard Zone D Liquefied gas, toxic, oxidizing, n.o.s. Inhalation Hazard Zone A Liquefied gas, toxic, oxidizing, n.o.s. Inhalation Hazard Zone B Liquefied gas, toxic, oxidizing, n.o.s. Inhalation Hazard Zone C Liquefied gas, toxic, oxidizing, n.o.s. Inhalation Hazard Zone D Liquefied gas, toxic, corrosive, n.o.s. Inhalation Hazard Zone A Liquefied gas, toxic, corrosive, n.o.s. Inhalation Hazard Zone B#

Page 7Aerosols, flammable, (each not exceeding 1 L capacity) Aerosols, flammable, n.o.s. (engine starting fluid) (each not exceeding 1 L capacity) Compressed gas, flammable, n.o.s. Deuterium, compressed 1,1-Difluoroethylene or Refrigerant gas R 1132a Ethane, refrigerated liquid Ethylene Hydrocarbon gas mixture, compressed, n.o.s. Hydrocarbon gas mixture, liquefied, n.o.S. Hydrogen, refrigerated liquid (cryogenic liquid) Isobutane see also Petroleum gases, liquefied Methane, compressed or Natural gas, compressed (with high methane content) Methane, refrigerated liquid (cryogenic liquid) or Natural gas, refrigerated liquid (cryogenic liquid), with high methane content) Propane see also Petroleum gases, liquefied Hydrogen and Methane mixtures, compressed l,l,l-Trifluoroethane, or Refrigerant gas R 143a Gas cartridges, (flammable) without a release device, non-refillable Receptacles, small, containing gas or gas cartridges (flammable), without release device, not refillable and not exceeding 1 Lcapacity 2,2-Dimethylpropane Propadiene, stabilized Silane Bromotrifluoroethylene Ethylacetylene, stabilized Ethyl fluoride or Refrigerant gas R161 Methyl fluoride, or Refrigerant gas R 41 l-Chloro-l,l-difluoroethane or Refrigerant gas R 142b Cyclobutane Ethylene, acetylene and propylene in mixture, refrigerated liquid with at least 71.5 percent ethylene with not more than 22.5 percent acetylene and not more than 6 percent propylene Devices, small, hydrocarbon gas powered or Hydrocarbon gas refills for small devices with release device Pertluoro(methyl vinyl ether) Pertluoro(ethyl vinyl ether) Liquefied gas, flammable, n.o.s. Gas sample, non-pressurized, flammable, n.o.s., not refrigerated liquid#

Page 8Liquefied gas, toxic, corrosive, n.o.s. Inhalation Hazard Zone C Liquefied gas, toxic, corrosive, n.o.s. Inhalation Hazard Zone D Liquefied gas, toxic, flammable, corrosive, n.o.s. Inhalation Hazard Zone A Liquefied gas, toxic, flammable, corrosive, n.o.s. Inhalation Hazard Zone B Liquefied gas, toxic, flammable, corrosive, n.o.s. Inhalation Hazard Zone C Liquefied gas, toxic, flammable, corrosive, n.o.s. Inhalation Hazard Zone D Liquefied gas, toxic, oxidizing, corrosive, n.o.s. Inhalation Hazard Zone A Liquefied gas, toxic, oxidizing, corrosive, n.o.s. Inhalation Hazard Zone B Liquefied gas, toxic, oxidizing, corrosive, n.o.s. Inhalation Hazard Zone C Liquefied gas, toxic, oxidizing, corrosive, n.o.s. Inhalation Hazard Zone D Ammonia solution, relative density less than 0.880 at 15 degrees C in water, with more than 50 percent ammonia Insecticide gases, toxic, flammable, n.o.s. Inhalation Hazard Zone A Insecticide gases, toxic, flammable, n.o.s. Inhalation Hazard Zone B Insecticide gases, toxic, flammable, n.o.s. Inhalation Hazard Zone C Insecticide gases, toxic, flammable, n.o.s. Inhalation Hazard Zone D Division 2.2 materials with a subsidiary hazard - other than metered delivery or metered delivery >3500 water gallons and, for obstructed view deliveries where permitted by § 177.840(P) Gas, refrigerated liquid, oxidizing, n.o.s. (cryogenic liquid) Compressed gas, oxidizing, n.o.s. Liquefied gas, oxidizing, n.o.s. Nitrogen trifluoride Nitrous oxide, refrigerated liquid Receptacles, small, containing gas or gas cartridges (oxidizing), without release device, not refillable and not exceeding 1 Lcapacity Aerosols, poison, each not exceeding 1 L capacity Aerosols, corrosive, Packing Group 11 or III, (each not exceeding 1 L capacity) Oxygen, refrigerated liquid (cryogenic liquid) Nitrous oxide Oxygen, compressed Air, refrigerated liquid, (cryogenic liquid) Air, refrigerated liquid, (cryogenic liquid) non-pressurized#

Page 9Division 2.1 Materials - other than metered delivery or metered delivery >3500 water gallons and, for obstructed view deliveries where permitted by § 177.840(p} Diborane mixtures Refrigerant gases, n.O.s. or Dispersant gases, n.o.s. Ethane-Propane mixture, refrigerated liquid Acetylene, dissolved Butadienes, stabilized or Butadienes and Hydrocarbon mixture, stabilized, containing more than 40% butadienes Butane see also Petroleum gases, liquefied Butylene see also Petroleum gases, liquefied Cyclopropane 1,1-Difluoroethane or Refrigerant gas R 152a Dimethylamine, anhydrous Dimethyl ether Ethane Ethylamine Ethyl chloride Ethylene, refrigerated liquid (cryogenic liquid) Ethyl methyl ether Ethylene oxide and carbon dioxide mixtures with more than 9 percent but not more than 87 percent ethylene oxide Hydrogen,compressed Isobutylene see also Petroleum gases, liquefied Lighter refills containing flammable gas not exceeding 4 fluid ounces (7.22 cubic inches) and 65 grams offlammable gas Lighters containing flammable gas Methyl acetylene and propadiene mixtures, stabilized Methylamine, anhydrous Methyl chloride, or Refrigerant gas R 40 Petroleum gases, liquefied or Liquefied petroleum gas Propylene see also Petroleum gases, liquefied Tetrafluoroethylene, stabilized Trimethylamine, anhydrous Vinyl bromide, stabilized Vinyl chloride, stabilized Vinyl methyl ether, stabilized Vinyl fluoride, stabilized Methyl chloride and methylene chloride mixtures#