SAE-J2343-2007.pdf
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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 entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising there
2、from, 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 2007 SAE International All rights reserved. No part of this publication m
3、ay be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: 724-776-4970 (outside USA)
4、 Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org J2343 REV. NOV2007 SURFACE VEHICLE RECOMMENDED PRACTICE Issued 1997-01 Revised 2007-11 Superseding J2343 JAN1997 (R) Recommended Practice for LNG Medium and Heavy-Duty Powered Vehicles RATIONALE The document has been
5、 updated to keep pace with field experience and technical advances. FOREWORD This SAE Recommended Practice is intended as a guide for standard practice and is subject to change in order to keep pace with experience and technical advances. Its purpose is to promote safety and efficiency by making ava
6、ilable to sellers and buyers of commercial liquefied natural gas (LNG) powered medium and heavy-duty vehicles a recommended practice for construction, operation, and maintenance of such vehicles. Vehicles shall be defined as having a gross vehicle weight (GVW) rating of greater than 6350 kg (14 001
7、USA pounds), and all LNG vehicles used for public transit or commercial applications. The intent of this document is to cover these classes and application of vehicles only and specifically excludes automotive passenger vehicles. The document was initially developed by the Manufacturers LNG Technica
8、l Subcommittee of the ATA Foundations Alternative Fuels Task Force, which was organized in 1994 to guide the trucking and cryogenic industries in their efforts associated with the use of LNG as an Alternate Fuel for use in heavy-duty trucks. Prior to the first Subcommittee meeting, some preliminary
9、work had been performed by the LNG Onboard Fuel System Integration Committee (LOFSIC). The first step in the SAE Subcommittees work was to perform a Failure Modes and Effects Analysis (FMEA), facilitated by Failure Analysis Associates. This study identified Failure Scenarios and the Failure Mechanis
10、ms, which could potentially lead to the identified Failure Scenarios. It is the intent of these Recommended Practices to avoid the failure mechanisms identified by that study where possible, and to devise and recommend means of construction, operation, and maintenance, which would warn of an impendi
11、ng fault or failure, and/or mitigate the outcome, should a failure occur. Concurrent with the FMEA, the SAE Subcommittee undertook an exhaustive review of existing codes, standards, recommended practices, and regulations pertinent to trucks and LNG in force or in preparation, so that the Recommended
12、 Practice would be consonant with such, whether in force or under preparation. This SAE publication necessarily deals to some extent in generalities, since it is not possible to anticipate and address every individual set of conditions that might be found in constructing, operating, and maintaining
13、LNG powered vehicles. It is intended to be a practical guide illustrating the application of recommended practices. The correct application of these practices in any actual field situation must rely on sound judgment and experience. Copyright SAE International Provided by IHS under license with SAEL
14、icensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 01/24/2008 01:38:04 MSTNo reproduction or networking permitted without license from IHS -,-,- SAE J2343 Revised NOV2007 - 2 - TABLE OF CONTENTS 1. SCOPE4 1.1 Purpose.4 2. REFERENCES4 2.1 Applicable Publications.4 2.1.1 API Publication
15、4 2.1.2 ASME Publications4 2.1.3 Compressed Gas Association Publication5 2.1.4 Pipeline and Hazardous Materials Safety Administration Publication5 2.2 Related Publications .5 2.2.1 SAE Publication 5 2.2.2 ANSI/FCI Publication 5 2.2.3 California Code of Regulations.5 2.2.4 CCPS Publication5 2.2.5 Com
16、pressed Gas Association Publications6 2.2.6 Federal Motor Carrier Safety Administration Publications6 2.2.7 FEMA Publication6 2.2.8 NFPA Publication6 2.2.9 Texas Administrative Code Publication 6 3. DEFINITIONS .6 3.1 Family of Tanks Containers.6 3.2 LOX.6 3.3 LNG.7 3.4 Maximum Allowable Working Pre
17、ssure (MAWP) .7 3.5 Pressure Regulator.7 3.6 Ullage Ullage Space 7 4. REFUELING SITE CONSTRUCTION 7 4.1 General Design Criteria 7 4.1.1 Device Mounting .7 4.1.2 Fuel System Cleanliness After Any Assembly or Repair8 4.1.3 Pressure Tests8 4.1.4 Pressure Relief Devices8 4.1.5 Design Ullage Space 8 4.2
18、LNG Fuel Tanks8 4.2.1 Design.9 4.2.2 Pressure Relief Devices10 4.2.3 Level Gauging.11 4.2.4 Pressure Gauging.11 4.2.5 Fueling Connections .11 4.2.6 Manual Vent Valve12 4.2.7 Extended Bonnet Devices.12 4.2.8 Excess Flow Devices12 4.2.9 Connection and Manifold Enclosures.12 4.2.10 Vehicle Tank Support
19、s12 4.2.11 Labeling.12 4.2.12 Drop Tests.13 4.2.13 Flame Test13 4.3 Vaporizer.13 4.3.1 Vaporizer Marking.13 4.3.2 Vaporizer Heat Source13 4.4 Pressure Regulators .13 4.5 Automatic Shutoff Devices14 4.6 Failure/Warning Devices.14 Copyright SAE International Provided by IHS under license with SAELicen
20、see=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 01/24/2008 01:38:04 MSTNo reproduction or networking permitted without license from IHS -,-,- SAE J2343 Revised NOV2007 - 3 - 4.7 Fittings and Piping/Tubing 14 4.8 Corrosion/Vibration/Durability Integrity .14 4.9 Gas Detection .14 4.10 El
21、ectrical15 4.11 Gas Filtration.15 5. OPERATION.15 5.1 General .15 5.1.1 The Final Stage Vehicle Manufacturer (FSVM)15 5.1.2 Site Owner Operator Integration.16 5.2 LNG Safety16 5.2.1 Chemical and Physical Properties16 5.2.2 Safety Hazards16 5.2.3 Protective Equipment16 5.2.4 First Aid and Emergency S
22、ervices16 5.3 Fuel System Overview16 5.3.1 Fuel Tank System.16 5.3.2 Vaporizer.16 5.3.3 Pressure Relief Devices16 5.3.4 Automatic and Manual Shutoff Devices17 5.3.5 Vent Stack.17 5.4 Operational Safety 17 5.4.1 Pre- and Post-Operational Safety.17 5.4.2 Low-Temperature Warning.17 5.4.3 Methane Detect
23、ion17 5.5 Fueling Safety.17 5.5.1 Fueling Procedure.17 5.5.2 Grounding .17 5.5.3 Dust Caps .17 5.5.4 Tank Fueling with Venting Required.17 5.6 Fuel Quality.18 5.6.1 Fuel Specification18 5.6.2 Fuel Contamination.18 5.6.3 Use of CNG.18 5.6.4 Weathering of LNG Fuel.18 5.7 Indoor Parking Safety .18 5.7.
24、1 Short-Term Parking.18 5.7.2 Long-Term Parking .18 6. MAINTENANCE19 6.1 General .19 6.2 LNG Safety19 6.2.1 Chemical and Physical Properties19 6.2.2 Safety Hazards19 6.2.3 Protective Equipment19 6.2.4 Methane Detection19 6.3 Facility Safety19 6.3.1 Fuel Supply Isolation.19 6.3.2 Relief/Vent Stack Pi
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