UL SUBJECT 1349-2017 UL Outline for Investigation LP-Gas Vaporizers (Issue 2).pdf
《UL SUBJECT 1349-2017 UL Outline for Investigation LP-Gas Vaporizers (Issue 2).pdf》由会员分享,可在线阅读,更多相关《UL SUBJECT 1349-2017 UL Outline for Investigation LP-Gas Vaporizers (Issue 2).pdf(20页珍藏版)》请在麦多课文档分享上搜索。
1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULDecember 7, 20171UL 1349Outline of Investigation for LP-Gas VaporizersIssue Number: 2DECEMBER 7, 2017Summary of TopicsThis second issue of the Outline of Investigation for LP-Gas Vaporizers,Subje
2、ct 1349, which covers requirements for stationary vaporizers used inLP-Gas systems in accordance with LP-Gas Code, NFPA 58, is beingissued to harmonize UL 1349, Section 4.4, with NFPA 58, Section 5.24.9.4and to update the Moist Ammonia Air Stress Cracking Test.ULs Outlines of Investigation are copyr
3、ighted by UL LLC. Neither a printed norelectronic copy of an Outline of Investigation should be altered in any way. All ofULs Outlines of Investigation and all copyrights, ownerships, and rights regardingthose Outlines of Investigation shall remain the sole and exclusive property of ULLLC.COPYRIGHT
4、2017 UL LLCUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULDECEMBER 7, 2017UL 13492No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTION1 Scope .52 Gen
5、eral .52.1 Components .52.2 Units of measurement .52.3 Undated references .63 Glossary 6CONSTRUCTION4 General Requirements All Vaporizers 75 Direct Fired Vaporizers 86 Containers and Piping .97 Materials .9PERFORMANCE8 General .109 Deformation Test 1110 External Leakage Test 1211 Operation Test .121
6、2 Seat Leakage and Endurance Tests 1313 Hydrostatic Pressure Test .1314 Input Test 1415 Temperature Test .1416 Dielectric Voltage Withstand Test .1417 Accelerated Aging Test .1418 LP-Gas Compatibility Test .1419 Low Temperature Test 1520 Moist Ammonia Air Stress Cracking Test 15MANUFACTURING AND PRO
7、DUCTION TESTS21 General 16RATINGS22 Pressure and Temperature .16MARKINGS23 General .16INSTRUCTIONS24 Installation and Operating 17APPENDIX ADECEMBER 7, 2017 UL 1349 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULStandards for ComponentsA1DEC
8、EMBER 7, 2017UL 13494UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Scope1.1 These requirements cover liquefied petroleum gas (LP-Gas) vaporizers of the stationary type.1.2 Vaporizers covered by these requirements are intended f
9、or use, and installation in propane systemsand applications covered by the Liquefied Petroleum Gas Code, NFPA 58, and electrical componentsinstalled in accordance with the National Electrical Code, NFPA 70.2 General2.1 Components2.1.1 Except as indicated in this clause, a component of a product cove
10、red by this standard shall complywith the requirements for that component. See the Standards for Components appendix for a list ofstandards covering components generally used in the products covered by this standard.2.1.2 A component is not required to comply with a specific requirement that:a) Invo
11、lves a feature or characteristic not required in the application of the component in theproduct covered by this standard, orb) Is superseded by a requirement in this standard.2.1.3 A component shall be used in accordance with its rating established for the intended conditions ofuse.2.1.4 Specific co
12、mponents are incomplete in construction features or restricted in performancecapabilities. Such components are intended for use only under limited conditions, such as certaintemperatures not exceeding specified limits, and shall be used only under those specific conditions.2.2 Units of measurement2.
13、2.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory orapproximate information.DECEMBER 7, 2017 UL 1349 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL2.3 Undated references2.3.1 Any undated refere
14、nce to a code or standard appearing in the requirements of this standard shallbe interpreted as referring to the latest edition of that code or standard.3 Glossary3.1 For the purpose of this outline, the following definitions apply.3.2 LIQUEFIED PETROLEUM GAS (LP-GAS or LPG) Any material having a va
15、por pressure notexceeding that allowed for commercial propane composed predominantly of the following hydrocarbons,either by themselves (excluding propylene) or as mixtures: propane, propylene, butane (normal butaneor iso-butane) and butylenes.3.3 VAPORIZER A piece of equipment, which includes a con
16、tainer, that receives LP-Gas in liquidform and adds sufficient heat energy to convert the liquid to a gaseous state. They are further classifiedby the type of energy used and how the energy is applied to the LP-Gas.3.4 VAPORIZER, DIRECT-FIRED A type of vaporizer in which the heat energy is furnished
17、 by directflame impingement onto a heat exchange surface in contact with liquid LP-Gas.3.5 VAPORIZER, ELECTRIC A type of vaporizer in which electrical energy is used as a source ofheat. They are further classified by how the electrical energy is applied to the LP-Gas.3.6 VAPORIZER, ELECTRIC, DIRECT-
18、IMMERSION A type of vaporizer that has an electric elementimmersed directly into the LP-Gas liquid and vapor.3.7 VAPORIZER, ELECTRIC, INDIRECT An immersion-type vaporizer that has the electric elementimmersed into an interface solution that is in contact with the LP-Gas heat exchanger or applieselec
19、trical energy to an intermediate heat sink.3.8 VAPORIZER, INDIRECT (or INDIRECT-FIRED) A vaporizer in which heat energy is furnished bysteam, hot water, the ground, surrounding air, or other heated medium to a vaporizing chamber or totubing, pipe coils, or other heat exchange surface containing the
20、liquid LP-Gas. The heating of themedium is at a point remote from the vaporizer portion containing the LP-Gas. This definition includes adirect-fired water-bath vaporizer (the water bath is the heat transfer medium).DECEMBER 7, 2017UL 13496UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCT
21、ION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONSTRUCTION4 General Requirements All Vaporizers4.1 LP-Gas vaporizers shall include all of the components necessary for its intended function andinstallation, and shall be furnished as a single unit or assembly. The container(s) shall meet therequirement
22、s of 6.1.4.2 Electrical components, when incorporated into the assembly of a LP-Gas vaporizer, including themeans provided in the assembly for electrical connections, shall comply with the requirements forequipment for use in hazardous locations, Class I, Group D, Division 1 or 2, (or Zone 1 or 2, r
23、espectively),as appropriate, in the National Electrical Code, NFPA 70, Articles 500 and 501 (Article 505 for ZoneClassification), depending upon the installation in accordance with Liquefied Petroleum Gas Code, NFPA58. Such components shall comply with the applicable standard for the protection tech
24、nique employed;for example explosion proof equipment shall comply with the Standard for Explosion-Proof andDust-Ignition-Proof Electrical Equipment for Use in Hazardous (Classified) Locations, UL 1203.Exception No. 1: When electrical components are provided in the assembly of a direct-fired vaporize
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
10000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- ULSUBJECT13492017ULOUTLINEFORINVESTIGATIONLPGASVAPORIZERSISSUE2PDF

链接地址:http://www.mydoc123.com/p-1069154.html