{"id":381261,"date":"2024-10-20T03:10:45","date_gmt":"2024-10-20T03:10:45","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iso-33812021\/"},"modified":"2024-10-26T05:45:52","modified_gmt":"2024-10-26T05:45:52","slug":"bs-en-iso-33812021","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iso-33812021\/","title":{"rendered":"BS EN ISO 3381:2021"},"content":{"rendered":"<p>This document specifies the measurement method and conditions to obtain reproducible noise levels on-board all kinds of vehicles operating on rails or other types of fixed track, hereinafter conventionally called \u201cunit\u201d, except for track maintenance vehicles in working modes.<\/p>\n<p>This document is applicable to type testing. It does not include all the instructions to carry out monitoring testing or evaluation of noise exposure of passengers or drivers over a whole journey.<\/p>\n<p>This document is not applicable to guided buses.<\/p>\n<p>It provides measurement procedures for vehicle interior noise (in general, a vehicle type test is carried out using only a selected subset of these tests):<\/p>\n<ul>\n<li>\n<p>when the vehicle is moving at constant speed;<\/p>\n<\/li>\n<li>\n<p>when the vehicle is stationary;<\/p>\n<\/li>\n<li>\n<p>when the vehicle is accelerating or decelerating;<\/p>\n<\/li>\n<li>\n<p>in the driver&#8217;s cab when an external warning horn is sounding (specifically required for European Union regulation application)<\/p>\n<\/li>\n<\/ul>\n<p>It does not provide measurement procedures for:<\/p>\n<ul>\n<li>\n<p>audibility or intelligibility of any audible signals;<\/p>\n<\/li>\n<li>\n<p>assessment of warning devices other than warning horns.<\/p>\n<\/li>\n<\/ul>\n<p>The assessment of noise exposure of train crew due to operational conditions is not in the scope of this document.<\/p>\n<p>The results can be used, for example:<\/p>\n<ul>\n<li>\n<p>to characterise the noise inside these units;<\/p>\n<\/li>\n<li>\n<p>to compare the internal noise of various units on a particular track section;<\/p>\n<\/li>\n<li>\n<p>to collect basic source data for units.<\/p>\n<\/li>\n<\/ul>\n<p>The test procedures specified in this document are of engineering grade (grade 2), the preferred grade for noise declaration purposes as defined in <span class=\"std\"> <span class=\"std-ref\">ISO&nbsp;12001<\/span><\/span> . If test conditions are relaxed, for example as they are for monitoring of in-service trains, then the results are no longer of engineering grade.<\/p>\n<p>The procedures specified for accelerating and decelerating tests are of survey grade (grade 3).<\/p>\n<h4>PDF Catalog<\/h4>\n<table border=\"1px\" class=\"des-table\">\n<tr>\n<th>PDF Pages<\/th>\n<th>PDF Title<\/th>\n<\/tr>\n<tr>\n<td><b>2<b><\/td>\n<td>National foreword  <\/td>\n<\/tr>\n<tr>\n<td><b>4<b><\/td>\n<td>European foreword  <\/td>\n<\/tr>\n<tr>\n<td><b>8<b><\/td>\n<td>Foreword  <\/td>\n<\/tr>\n<tr>\n<td><b>9<b><\/td>\n<td>1 Scope <br \/> 2 Normative references  <\/td>\n<\/tr>\n<tr>\n<td><b>10<b><\/td>\n<td>3 Terms and definitions  <\/td>\n<\/tr>\n<tr>\n<td><b>11<b><\/td>\n<td>4 Instrumentation and calibration <br \/> 4.1 Instrumentation <br \/> 4.2 Calibration  <\/td>\n<\/tr>\n<tr>\n<td><b>12<b><\/td>\n<td>5 Measurement positions <br \/> 5.1 Division of the unit into areas <br \/> 5.1.1 General <br \/> 5.1.2 Definition of area types <br \/> 5.1.3 Definition of area acoustics <br \/> 5.1.4 Selection of areas to be assessed  <\/td>\n<\/tr>\n<tr>\n<td><b>14<b><\/td>\n<td>5.2 Measurement positions  <\/td>\n<\/tr>\n<tr>\n<td><b>15<b><\/td>\n<td>5.3 Measurement height <br \/> 5.3.1 Seating position <br \/> 5.3.2 Standing position <br \/> 5.3.3 Lying position  <\/td>\n<\/tr>\n<tr>\n<td><b>16<b><\/td>\n<td>5.3.4 Driving position  <\/td>\n<\/tr>\n<tr>\n<td><b>17<b><\/td>\n<td>6 Stationary test <br \/> 6.1 General <br \/> 6.2 Environmental conditions <br \/> 6.2.1 Acoustical environment <br \/> 6.2.2 Meteorological conditions  <\/td>\n<\/tr>\n<tr>\n<td><b>18<b><\/td>\n<td>6.2.3 Background sound pressure level <br \/> 6.3 Track conditions <br \/> 6.4 Vehicle conditions <br \/> 6.4.1 General <br \/> 6.4.2 Normal operating conditions  <\/td>\n<\/tr>\n<tr>\n<td><b>19<b><\/td>\n<td>6.4.3 Additional operating conditions <br \/> 6.5 Measured quantities <br \/> 6.6 Test procedure <br \/> 6.7 Data processing <br \/> 6.7.1 Standard processing  <\/td>\n<\/tr>\n<tr>\n<td><b>20<b><\/td>\n<td>6.7.2 Additional processing <br \/> 7 Testing in cabs when sounding an external warning horn <br \/> 7.1 Environmental conditions <br \/> 7.1.1 Acoustical environment  <\/td>\n<\/tr>\n<tr>\n<td><b>21<b><\/td>\n<td>7.1.2 Meteorological conditions <br \/> 7.1.3 Background sound pressure level <br \/> 7.2 Track conditions <br \/> 7.3 Vehicle conditions <br \/> 7.4 Measured quantities <br \/> 7.5 Test procedure  <\/td>\n<\/tr>\n<tr>\n<td><b>22<b><\/td>\n<td>7.6 Data processing <br \/> 7.6.1 Standard processing <br \/> 7.6.2 Additional processing <br \/> 8 Constant speed test <br \/> 8.1 General <br \/> 8.2 Environmental conditions <br \/> 8.2.1 Acoustical environment  <\/td>\n<\/tr>\n<tr>\n<td><b>23<b><\/td>\n<td>8.2.2 Meteorological conditions <br \/> 8.2.3 Background sound pressure level <br \/> 8.3 Track conditions <br \/> 8.3.1 General <br \/> 8.3.2 Track design  <\/td>\n<\/tr>\n<tr>\n<td><b>24<b><\/td>\n<td>8.3.3 Track superstructure <br \/> 8.3.4 Track quality <br \/> 8.3.5 Rail roughness and track dynamic properties <br \/> 8.3.6 Special conditions <br \/> 8.4 Vehicle conditions <br \/> 8.4.1 General  <\/td>\n<\/tr>\n<tr>\n<td><b>25<b><\/td>\n<td>8.4.2 Normal operating conditions <br \/> 8.4.3 Occupancy and load <br \/> 8.4.4 Wheel tread conditioning  <\/td>\n<\/tr>\n<tr>\n<td><b>26<b><\/td>\n<td>8.4.5 Additional conditions <br \/> 8.5 Measured quantities <br \/> 8.6 Test procedure <br \/> 8.6.1 General <br \/> 8.6.2 Test speeds <br \/> 8.6.3 Measurement time intervals  <\/td>\n<\/tr>\n<tr>\n<td><b>27<b><\/td>\n<td>8.7 Data processing <br \/> 8.7.1 Standard processing <br \/> 8.7.2 Additional processing  <\/td>\n<\/tr>\n<tr>\n<td><b>28<b><\/td>\n<td>9 Acceleration from stand-still test and deceleration to stand-still test <br \/> 9.1 General <br \/> 9.2 Environmental conditions <br \/> 9.2.1 Acoustical environment <br \/> 9.2.2 Meteorological conditions  <\/td>\n<\/tr>\n<tr>\n<td><b>29<b><\/td>\n<td>9.2.3 Background sound pressure level <br \/> 9.3 Track conditions <br \/> 9.4 Vehicle conditions <br \/> 9.4.1 General  <\/td>\n<\/tr>\n<tr>\n<td><b>30<b><\/td>\n<td>9.4.2 Normal operating conditions <br \/> 9.4.3 Occupancy and load <br \/> 9.4.4 Wheel tread conditions  <\/td>\n<\/tr>\n<tr>\n<td><b>31<b><\/td>\n<td>9.5 Test procedure for the acceleration test <br \/> 9.6 Test procedure for the deceleration test <br \/> 9.7 Maximum level method <br \/> 9.7.1 Measured quantities <br \/> 9.7.2 Data processing  <\/td>\n<\/tr>\n<tr>\n<td><b>32<b><\/td>\n<td>9.8 Averaged level method <br \/> 9.8.1 Measured quantity <br \/> 9.8.2 Data processing  <\/td>\n<\/tr>\n<tr>\n<td><b>33<b><\/td>\n<td>10 Quality of the measurements <br \/> 10.1 Deviations from the requirements <br \/> 10.2 Positional tolerances <br \/> 10.3 Measurement spread <br \/> 10.4 Measurement uncertainties <br \/> 11 Test report  <\/td>\n<\/tr>\n<tr>\n<td><b>35<b><\/td>\n<td>Annex A (informative) Guidance on the definition and reporting of vehicle conditions  <\/td>\n<\/tr>\n<tr>\n<td><b>36<b><\/td>\n<td>Annex B (informative) Method to characterize the impulsive character of the noise  <\/td>\n<\/tr>\n<tr>\n<td><b>38<b><\/td>\n<td>Annex C (normative) Acoustic track characteristics  <\/td>\n<\/tr>\n<tr>\n<td><b>42<b><\/td>\n<td>Annex D (informative) Specific environments  <\/td>\n<\/tr>\n<tr>\n<td><b>45<b><\/td>\n<td>Annex E (informative) Quantification of measurement uncertainties according to ISO\/IEC Guide 98\u20113  <\/td>\n<\/tr>\n<tr>\n<td><b>49<b><\/td>\n<td>Bibliography  <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p><b>Railway applications. Acoustics. Noise measurement inside railbound vehicles<\/b><\/p>\n<table class=\"shortdes-table\" style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/bsi\/\"><b>BSI<\/b><\/a><\/td>\n<td>2021<\/td>\n<td>50<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":381270,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-381261","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/381261","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/381270"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=381261"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=381261"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=381261"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}