1、Designation: D 7325 07Standard Practice forHandling, Transportation, and Storage of IG-541 N2,Ar,CO21This standard is issued under the fixed designation D 7325; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revis
2、ion. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice covers guidance and direction to suppliers,purchasers, and users in the handling, transportation, andstorage of I
3、G-541.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 This standard does not purport to address all of thesafety concerns, if any
4、, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 CGA Standards2C-1 Methods for Hydrostatic Testing of Compressed Gas
5、CylindersC-4 American National Standard Method of MarkingPortable Compressed Gas Containers to Identify theMaterial ContainedC-6 Standards for Visual Inspection of Steel CompressedGas CylindersC-7 Guide to Preparation of Precautionary Labeling andMarking of Compressed Gas ContainersP-1 Safe Handling
6、 of Compressed Gases in Containers2.2 U.S. Government Standards:2Code of Federal Regulations (CFR) Title 40 , Part 82.106CFR Title 49, Part 172 , U.S. Department of Transportation(DOT), Hazardous Materials Table, Special Provisions,Hazardous Materials Communications, Emergency Re-sponse Information,
7、 and Training RequirementsCFR Title 49, Part 172.101 , U.S. DOT, Tables of Hazard-ous Materials and Special ProvisionsCFR Title 49, Part 173 , U.S. Department of Transportation(DOT) Specifications, Shippers-General Requirements forShipping and PackagingsCFR Title 49, Part 178 , U.S. DOT Specificatio
8、ns, Specifi-cations for PackagingsCFR Title 49, Part 180 , U.S. DOT, Continuing Qualifica-tion and Maintenance of Packagings3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 Containers, nstorage vessels for IG-541.3.1.2 Cylinders, vcontainers of IG-541.3.1.3 IG-541, nN2,Ar,CO2;
9、a compound used to inert orsuppress a fire or explosion hazard.3.1.4 Insulated, adjplaced in an isolated situation toprotect and prevent the transfer of damage.4. Significance and Use4.1 This practice provides requirements for the handling,transportation, and storage of IG-541 encountered in distrib
10、u-tion through both commercial and military channels. It isintended to ensure that IG-541 is handled, transported, andstored in such a way that its physical property virtues are notdegraded. Transport may be by various means, such as, but notlimited to, highway, rail, and water.5. Practice5.1 To ens
11、ure safe handling, loading, unloading, storing,and transporting of material, personnel shall be trained in theCGA Standards C-1, C-4, C-6, C-7 and P-1 and CFR Title 40,Part 82.106, CFR Title 49, Part 172, CFR Title 49, Part 172.101and CFR Title 49, Part 173, CFR Title 49, Part 178 and CFRTitle 49, P
12、art 180.5.2 Handling:5.2.1 Handling shall be in accordance with CGA P-1.5.2.1.1 Personnel who handle or store, or both, cylinders ofIG-541 shall be trained properly to recognize and identify thecharacteristics of the product and the proper methods of safelyhandling full, partially full, and empty cy
13、linders.5.2.2 Facility personnel must be trained in applicable CFRTitle 49, Parts 173 and 178, and the CGA documents refer-enced in 2.1.1This practice is under the jurisdiction of ASTM Committee D26 on Haloge-nated Organic Solvents and Fire Extinguishing Agents and is the direct responsi-bility of S
14、ubcommittee D26.09 on Fire Extinguishing Agents.Current edition approved July 1, 2007. Published August 2007.2Available from Compressed Gas Association (CGA), 4221 Walney Rd., 5thFloor, Chantilly, VA 20151-2923, http:/.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohoc
15、ken, PA 19428-2959, United States.5.2.3 IG-541 handling shall be in nonsmoking, heater-free,ventilated areas to preclude product accumulation. Provisionsshall be made to ensure that service areas limit IG-541concentrations to not exceed 52 % (10% Sea Level Oxygenequivalency) for 30 s and 7 % (19.5%
16、Sea Level OxygenEquivalency) for 8 h.5.2.4 Cylinders shall not be overfilled. The maximum per-mitted filling density for pure IG-541 shall be .088 lb/ft3(1.409kg/m3). Filling density requirements are specified in CFR Title49, 173.304 and CFR Title 49, 173.305.5.2.5 Cylinders shall be free of dirt an
17、d contamination thatwould contribute to or would cause deterioration of productduring shipment or storage. Precautions should be taken toprevent the entry of oil, water, or any other foreign matter intocontainers. Unique coatings or preservatives applied prior toshipment to protect the containers ar
18、e not considered contami-nation.5.3 Transportation:5.3.1 Transportation shall be as specified in accordance withDOT regulations of CFR Title 49.5.3.1.1 The minimum design pressure requirements shall beas indicated in CFR Title 49, Part 173.301. The pressure insidethe container at 70F (21C) shall not
19、 exceed the servicepressure for which the container is marked. The pressure insidethe container at 130F (54C) shall not exceed 5/4 times theservice pressure for which the container is marked. Figs. 1 and2 illustrate the effect of temperature on cylinders filled withIG-541.FIG. 1 IG-541 (150 Bar) Iso
20、metric DiagramD73250725.3.2 Transportation shall be by suitable vehicles to pre-clude cylinder damage by excessive mechanical vibration,shock, freezing, or deleterious high temperatures throughoutthe entire transport route.5.3.2.1 If cylinders are expected to be subjected to unac-ceptable transport
21、conditions, the cylinders should be placedunder insulated conditions.5.3.3 Compressed gas cylinder permanent marking require-ments shall be as specified under CFR Title 49, Part 178 andmust be maintained in legible condition as required by CFRTitle 49, Part 173. Warning labels shall be affixed to cy
22、lindersconforming to requirements of CFR Title 40, Part 82.106.5.4 Storage:5.4.1 Storage shall be in accordance with CGA P-1 inqualified cylinders in accordance with CFR Title 49, Parts 173and 178.5.4.2 Cylinders should be stored in areas that will protectvessels from physical and environmental dama
23、ge and tamper-ing from unauthorized personnel.5.4.2.1 Facilities should be of construction and orientationso that safety requirements are fulfilled for the storage ofpressurized cylinders.5.4.3 Storage cylinders shall be fitted with pressure releasemechanisms to limit vessel pressure to not more tha
24、n the ratedworking pressure of the IG-541 container in use at anyparticular time.5.4.3.1 Periodic hydrostatic testing and reinspection of cyl-inders used for IG-541 shall comply with CFR Title 49,Part 180.5.4.4 Insulation shall be placed on pallets or shoring, andprovisions should be made to prevent
25、 excessive shock orthermal fluctuations to cylinders.5.4.5 Cylinders shall be stored in a manner that will preventcontamination from external sources.6. Keywords6.1 N2; Ar; CO2; compressed gas; cylinders; explosionsuppressant; fire suppressant; INERGENt; handling; IG-541;FIG. 2 IG-541 (200 Bar) Isom
26、etric DiagramD7325073storage; transportASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the
27、riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of
28、this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldma
29、ke your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).D7325074
