SAE AS 1303A-1996 Portable Chemical Oxygen《便携式化学氧气》.pdf

1、SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirelyvoluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefro

2、m, is the sole responsibility of the user.”SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions.Copyright 2001 Society of Automotive Engineers, Inc.All rights reserved. Printed in U.S.

3、A.TO PLACE A DOCUMENT ORDER: (724) 776-4970 FAX: (724) 776-0790 SAE WEB ADDRESS: http:/www.sae.org400 Commonwealth Drive, Warrendale, PA 15096-0001AEROSPACE STANDARDAS1303REV.AIssued 1973-05Revised 1996-10Reaffirmed 2001-10Portable Chemical Oxygen1. SCOPE:This SAE Aerospace Standard (AS) applies to

4、a portable chemical oxygen generator assembly intended for the following uses:a. First aid treatment of aircraft occupants after an emergency descent following a decompression or other emergency condition.b. Use by cabin attendants to maintain their mobility after a decompression.2. REFERENCES:2.1 A

5、pplicable Documents:The following publications form a part of this document to the extent specified herein. The latest issue of SAE publications shall apply. The applicable issue of other publications shall be the issue in effect on the date of the purchase order. In the event of conflict between th

6、e text of this document and references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.2.1.1 SAE Publications: Available from SAE, 400 Commonwealth Drive, Warrendale,

7、 PA 15096-0001.ARP1894 Useful Life Determination for Chemical Oxygen GeneratorsAS8010 Aviators Breathing Oxygen Purity Standard2.1.2 RTCA Documents: Available from Radio Technical Commission for Aeronautics Secretariat, Suite 500, 1425 K Street, N.W., Washington, DC 20005. The latest issue of applic

8、able RTCA documents shall apply.RTCA/DO-160 Environmental Conditions and Test Procedures for Airborne EquipmentCopyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-SAE AS1303 Revision A- 2 -2.1.3 EUROCAE Do

9、cuments: Available from EUROCAE - 11, rue Hamelin - 75783 PARIS CEDEX 16, France.ED-14 Environmental Conditions and Test Procedures for Airborne Electronic/Electrical Equipment and InstrumentsNOTE: EUROCAE ED-14C and RTCA/DO-160C are equivalent documents. It is anticipated this equivalency will be m

10、aintained in future revisions. However, in the event of differences between future versions of these documents, the requirements stated in RTCA/DO-160 shall take precedence.2.1.4 FAA Documents: Available from US Government Printing Office, Superintendent of Documents, Washington, DC 20402-9329.TSO C

11、64a Oxygen Mask Assembly, Continuous Flow, Passenger2.1.5 ASQC Documents: Available from American Society for Quality Control, 230 Wells St., Milwaukee, WI 53203.The ASQC Basic References in Quality Control, Volume 4: How to Perform Skip-Lot and Chain Sampling, by Kenneth S. Stephens2.2 Related Publ

12、ications:2.2.1 NATO Publications: Available from North Atlantic Treaty Organization, Military Agency for Standardization (MAS), 1110 Brussels, Belgium. Also available from Naval Publications and Forms Center, 5801 Tabor Avenue, Philadelphia, PA 19120.STANAG 3688 GGS Characteristics Of Breathable Oxy

13、gen Supplied By Chemical Solid Generators2.3 Definitions:CHEMICAL CORE: An object, composed of sodium chlorate or an analogous alkali metal chlorate or perchlorate, formulated with fuels, catalysts, and other modifiers and additives as required by the particular design, which evolves oxygen by a con

14、trolled chemical decomposition reaction, when actuated. Also sometimes called a chlorate candle.CHEMICAL OXYGEN GENERATOR: A device comprising a chemical core and its surrounding mechanical enclosure, insulating material, actuation means for the chemical core, pressure relief means, and any necessar

15、y filtering means. A means of conveying evolved oxygen to the masks is also frequently included, although that function can also be fulfilled by an external manifold.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without licens

16、e from IHS-,-SAE AS1303 Revision A- 3 -2.3 (Continued):CHLORATE CANDLE: An alternate term sometimes applied to a chemical core, possibly because the progress of the organized decomposition reaction along the length of the core can be likened to the burning of a candle. This term is also sometimes lo

17、osely applied to the entire chemical oxygen generator.GENERATOR CARTRIDGE: An assembly comprising a chemical core and its surrounding mechanical enclosure, insulating material, initiation means for the chemical core, pressure relief means, and any necessary filtering means, which is designed as a re

18、placeable component, and is intended for insertion into a reusable portable chemical oxygen device, as a means of recharging the device.PORTABLE CHEMICAL OXYGEN DEVICE: A piece of equipment used as a portable supply of oxygen, which is produced by means of a chemical reaction. Generally comprises th

19、e oxygen generator, carrying case, oxygen mask, and all other system components, assembled in an integrated package.SKIP-LOT SAMPLING: A method of selecting samples for inspection by applying the principles of a continuous sampling plan to a continuing series of lots or batches rather than to indivi

20、dual product lots. For processes having a high degree of process capability this approach can be more cost effective than conventional sampling plans. Consult the ASQC reference cited in 2.1.5 for more details regarding construction of this type of sampling plan.STPD: Standard Temperature and Pressu

21、re, Dry. Conditions comprising a temperature of 0 C (32 F) and one atmosphere absolute pressure (101.3 kPa or 760 mm of Hg), dry basis (partial pressure of water vapor equals zero).3. REQUIREMENTS:3.1 Device Characteristics:3.1.1 The portable chemical oxygen device should typically comprise the foll

22、owing components. However, alternate design features which accomplish equivalent performance are acceptable. a. Outer Case to house the remainder of the components and to protect the user from contact with the hot inner components during operation. b. Adjustable Carrying Strap, sufficiently large to

23、 stretch across an aircraft seat back. c. At least one oxygen mask or other oxygen dispensing device and flexible tubing. d. One or more replaceable oxygen generator cartridges, which generate the oxygen supply, unless the entire oxygen generator is intended as a single use device.e. Relief valves o

24、r other relief means on each generator cartridge. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-SAE AS1303 Revision A- 4 -3.1.1 (Continued):f. Actuating mechanisms to be part of each generator assemb

25、ly.g. One or more initiators, to be part of each generator cartridge. h. Manifold to connect multiple cartridges to the mask tubing. May be a reusable part of the generator assembly, or may be a disposable part of the generator cartridge. i. Brackets, as necessary, for mounting the device to the air

26、craft. 3.1.2 Means shall be provided for determining whether the generator cartridge is expended. 3.1.3 If the design of the device is intended to accomplish sustained operation by successive replacement of generator cartridges, each generator cartridge or the housing assembly must be placarded to s

27、how:3.1.3.1 The rate of oxygen flow, in liters per minute.3.1.3.2 The minimum duration of oxygen flow, in minutes, for the replaceable generator cartridge.3.1.3.3 A warning that the replaceable generator cartridge may be hot, unless the cartridge is constructed such that the surface temperature cann

28、ot exceed 37.8 C (100 F), when the device is operated at an ambient temperature of 21.1 C (70 F). 3.2 Generator Assembly Performance:Manufacturer shall declare the intended category of installation and use, to establish the appropriate category of RTCA/DO-160 test conditions. Manufacturer shall decl

29、are any installation or stowage limitations, such as required mounting means or any required clearances.3.2.1 Oxygen Flow:3.2.1.1 The assembly must have the capability to supply a minimum flow rate of 4 l/min STPD of oxygen to one user.3.2.1.2 Provision may be made in the design to permit dividing t

30、he flow, to supply 2 l/min STPD of oxygen to two users. If such provision is made, the design shall include suitable features to prevent inadvertently changing the flow supplied to a single user to 2 l/min.3.2.1.3 Oxygen should be supplied for a duration of at least 30 min. This capability may be ac

31、complished by having multiple cartridges. Manufacturer shall declare the minimum duration of operation for each device or cartridge.3.2.2 Oxygen Purity: The oxygen delivered to the dispensing device shall be free of objectionable odor and smoke, and shall satisfy the applicable purity requirements d

32、efined in AS8010. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-SAE AS1303 Revision A- 5 -3.2.3 Gas Temperature: The temperature of the oxygen at the mask shall not be more than 35 C (95 F) when the

33、device is operating at 26.7 C (80 F) ambient temperature in still air. 3.2.4 Generator Assembly Outer Case Temperature: The outer case temperature shall not exceed 60 C (140 F) during or following operation, when the ambient temperature is 26.7 C (80 F) at sea level ambient pressure in still air. 3.

34、2.5 Generator Assembly Pressure: The internal operating pressure of the generator assembly should be kept at the lowest practical level consistent with design performance requirements.3.2.6 Generator Assembly Orientation: The assembly shall be designed to operate properly under the range of conditio

35、ns specified herein when employed in all orientations. 3.2.7 Generator Assembly Leakage: Allowable leakage of oxygen from the assembly during operation shall not exceed 10 ml/min STPD. Flow through the oxygen outlet manifold or through the relief valve, when such flow is in accordance with the inten

36、ded functioning of the design, shall not be considered leakage within the meaning of this paragraph. 3.2.8 Relief Valve Performance: The relief valve or other pressure relief means shall protect the generator from any harmful over-pressurization. Flow from the relief means during operation shall not

37、 be considered a malfunction, so long as performance requirements are met in spite of such flow condition. 3.3 Generator Environmental Performance:3.3.1 The assembly shall operate as specified herein when actuated, across the full range of operating conditions anticipated to be encountered in the de

38、clared category of installation and use. In addition, the generator shall not experience premature actuation or performance degradation as a result of exposure to operating and storage conditions anticipated to be encountered in the intended application.3.3.2 The assembly shall operate over the rang

39、e of environmental operating conditions applicable to the declared category of installation as specified in RTCA/DO-160. At a minimum, environmental operating conditions which must be satisfied include: operating low temperature, operating high temperature, altitude (including decompression and over

40、pressure), operational shock, and operational vibration.3.3.2.1 In the case of short term operating high temperature, the generator may operate at an accelerated flow rate, but must not exhibit any dangerous malfunction.3.3.3 The assembly shall not experience premature actuation or performance degra

41、dation as a result of exposure to operating and storage conditions applicable to the declared category of installation as specified in RTCA/DO-160. At a minimum, conditions which must be satisfied include ground survival low temperature, ground survival high temperature, altitude, humidity, and oper

42、ational shock and vibration. Beyond these minimums, special conditions may include fluids, sand and dust, fungus, salt spray, or others, as required by the application.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without lice

43、nse from IHS-,-SAE AS1303 Revision A- 6 -3.4 Generator Safety Performance:3.4.1 The design of the assembly shall be such that failure or any malfunction causing performance degradation below the minimum specified level shall not create a hazardous condition by reason of its mode of failure or by the

44、 direct effect of such failure on the aircraft, related equipment, or personnel.3.4.1.1 No hazardous condition shall result from actuation of the generator in its installed location with its container closure not opened and the generator and mask in the stowed condition. This requirement shall apply

45、 only to installations which conform to the installation requirements and limitations declared by the manufacturer.3.4.2 Crash Safety: 3.4.2.1In all declared installation conditions (stowed), the design of the device shall satisfy the crash safety shock requirements of RTCA/DO-160. In the event the

46、device is subjected to a shock of the magnitude defined in the crash safety shock requirements, subsequent normal operation is not required.3.4.2.2 In the event the device is subjected to a shock of the magnitude defined in the crash safety shock requirements while operating, continued normal operat

47、ion is not required, but the shock shall result in no release of burning or molten core material. In the event the device is not operating, exposure to crash shock shall not cause self actuation.3.4.3 Drop Test: The generator assembly shall be dropped once from a height of two meters onto a rigid su

48、rface, with initial impact occurring on any of the six major faces without actuation occurring. After being dropped, the equipment may display evidence of damage, but must operate normally when subsequently actuated, regardless of which face incurred the impact.3.4.3.1 If the device is subjected to

49、a two meter drop while in operation, continued normal operation is not required, but the shock shall result in no release of burning or molten core material.3.5 Generator Reliability Performance:3.5.1 The design shall be capable of maintaining an appropriate degree of reliability throughout the useful life of the device. The predicted reliability shall be stated by the manufacturer.3.5.2 The predicted useful life shall be stated by the manufacturer. ARP1894 offe