1、A-A-5253 O October IO. 1995 SUPERSEDING 1 December 1983 MIL-G-53 006 COMMERCIAL ITEM DESCRIPTION GASOHOL, AUTOMOTIVE, UNLEADED The General Services Administration has authorized the use of this Commercial Item Description (CID) for all federal agencies. 1. SCOPE. This CID covers requirements for a t
2、ype of reformulated unleaded automotive gasoline containing ethyl alcohol (ethanol) as the oxygenate. Gasohol meets the oxygenate requirements for use in carbon monoxide nonattainment areas. Unieaded gasohol is intended for immediate use by all classes of spark ignition (SI) internal combustion auto
3、motive engines and all other equipment designed to operate on gasoline. It is not intended for static storage environments. It should not be stored for more than 60 days without replenishment because of possible auto-oxidation and water absorption which can result in fuel deterioration. 1.1 Classifi
4、cation. 1.1.1 Grades. Unleaded gasohol shall be of three grades. The major differences between the grades are the antiknock index (AKI) levels. AKI levels may be reduced for aititude and weather as shown in ASTM D48 14. Grade - AKI Limited 87 Regular 89 Premium 91 Beneficial comments, recommendation
5、s, additions, deletions, clantications, etc. and any other data which may improve this document should be sent by letter to: U.S. Army Tank-automotive and Armaments Command, ATTN: AMSTA-TR-EBLUE, Warren, MI 48397-5000. DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
6、 FSC 9130 Licensed by Information Handling ServicesA-A-5 25 3 O 1.1.2 Classes. Unleaded gasohol shall be of six classes for each grade. The major differences between the classes are the volatiiity levels. Schedule of seasonal and geographical volatility classes and listing of ozone nonattainment are
7、as are shown in ASTM D4814. - Class Condition of use AA Ozone nonattainment areas A Very hot B Hot C WarIn D Mild E Cold 2. SALIENT CHARACTERISTICS. 2.1 Material. The gasohol shall be composed of 90 percent volume unleaded gasoline and 10 percent volume ethyl alcohol (ethanol) with a tolerance of 1
8、percent. 2.2 Legal requirements Gasohol furnished under this CID must meet all applicable legai requirements in accordance with the Code of Federal Regulations. 2.3 Base gasoline. The base gasoline shali be a volatile hydrocarbon fuel conforming to ASTM D48 14 for unleaded gasoline except that no ox
9、ygenates (alcohols or ethers) shall be present other than smaii amounts used as anti-icing additives. 2.4 Ethvl alcohol. Ethyl alcohol shall be denatured and shali codorm to ASTM D4806. 2.5 Additives. The unleaded gasohol may contain antioxidants, metal deactivators, corrosion inhibitors, dyes and n
10、onphosphorous containing deposit modifiers. Additives other than these, such as detergents, emulsifiers, solvent oils, etc. will be permitted in procurement provided prior examinations have verified the absence of their potential deleterious effects. 2.6 Performance reaukements. 2.6.1 Phvsicai and c
11、hemical requirements. The unleaded gasohol shall meet the physical and chemical requirements of ASTM D4814 for unleaded fuel except as specified in 2.6.2 and 2.6.3. 2.6.2 Volatlity requirements. The unleaded gasohol shall meet the volatility, requirements of ASTM D4814, except that the Reid Vapor Pr
12、essure may be 1.0 psi (6.9 a) higher during the period 1 May through 15 September for use within the United States, including Alaska and Hawaii. 2 Licensed by Information Handling Services1 A-A-52530 2.6.3 AIU requirements. The unleaded gasohol shall meet the AKI requirements of ASTM D4814 for grade
13、s of product subject to reduction for altitude and weather. 2.6.4 Seasonal and geoa-aphicai use. The seasonal and geographical distribution of the combined vapor pressurddistillation-vapor lock classes shall meet the requirements of ASTM D4814. 2.6.5 Water tolerance. Water tolerance shall be as show
14、n in ASTM D4814. 3. Remilatory requirements. 3.1 Clean air act requirements. Under authority of the clean air act, the U.S. Environmental Protection Agency (EPA) issues vapor pressure control standards for unleaded and leaded gasoline-oxygenate blends. Reduced volatility limits are imposed in some a
15、reas designated as ozone nonattainment areas. Some states, notably California, have more restrictive vapor pressure limits. Details of the EPA regulations and test methods are given in part 80 of title 40 of the Code of Federal Regulations. 4. OUALITY ASSURANCE PROVISIONS. 4.1 Responsibility for ins
16、pection. The contractor is responsible for the performance of all inspections (examinations and tests). 4.2 Contractor certification. The contractor shaU ce* and maintain substantiating evidence that the product offered meets the salient characteristics of this CID and that the product conforms to t
17、he producers own drawings, specifications, workmanship standards, and quaiity assurance practices. Items with known defects shall not be submitted for Government acceptance. The Government reserves the right to require proof of such conformance prior to the first delivery and thereafter as may be ot
18、herwise provided for under the provisions of the contract. 5. Preservation. Daclcap * g. packing. labeling;. and marking. Unleaded gasohol will generally be produced in buk unless called for in the contract for 55 galion drum quantities. Preservation, packaging, packing, labeling, and marking shaii
19、be as specified in the contract or order (see 6.2). 6. NOTES. (This section contains information of a general or explanatory nature that may be helpful but is not mandatory.) 6.1 Addresses for obtaining copies of referenced documents. 6.1.1 Government documents. Copies of 40 CFR Part 80 are availabl
20、e fiom the Superintendent of Documents, Government Printing Office, Washington, DC 20402. 3 Licensed by Information Handling ServicesA-A-52530 6.1.2 Industn, standards. Copies of MTM D4806 “Standard Specifications for Denatured Fuel Ethanol for Blending With Gasoline for Use as Automotive Spark-Igni
21、tion Engine Fuel” and ASTM D4814 “Standard Specification for Automotive Spark-Ignition Engine Fuel” are available fiom the American Society for Testing and Materiais, 19 16 Race Street, Philadelphia, PA 19 103- 1187. b b r 6.2 Ordering data. Acquisition documents must spec the following: a. Title, n
22、umber, and date of this CID. b. Issue of DODISS to be cited in the solicitation. c. Grade and class of gasohol required. d. Whether buk or drum packaging. e. Quantity of gasohol required in terms of gallons (3.785 liters) at 60 degrees Fahrenheit (16 degrees Celsius) for bulk or number of drums for
23、packaging. f. Selection of applicable level and packaging requirements. 6.3 Cross-reference data. Unleaded gasohol conforming to this CID is interchangeable/ substitutable with unleaded gasohol conforming to MILG-53006. MILITARY INTERESTS: custodians CIVIL AGENCY COORDINATION ACTIVITIES: GSA - FSS Army - AT PREPARING ACTIVITY: Au Force - 68 Navy - YD-1 Army - AT (Project 9130-1056) Review activities Army-MD Navy - SA SH DLA - PS 4 Licensed by Information Handling Services
