{"id":100286,"date":"2026-02-15T20:31:54","date_gmt":"2026-02-15T20:31:54","guid":{"rendered":"https:\/\/vibromera.eu\/?post_type=calculator&#038;p=100286"},"modified":"2026-07-17T00:54:51","modified_gmt":"2026-07-17T00:54:51","slug":"vibration-iso20816-2-turbines","status":"publish","type":"calculator","link":"https:\/\/vibromera.eu\/hi\/calculators\/vibration-iso20816-2-turbines\/","title":{"rendered":"Large Turbomachinery Vibration Evaluation Evidence Worksheet"},"content":{"rendered":"\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"WebApplication\",\"name\":\"Large Turbomachinery Vibration Evaluation Evidence Worksheet\",\"description\":\"Organize scope, measurement and source evidence for external review against ISO 20816-2:2017 with Amendment 1:2024. 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summary{cursor:pointer;font-weight:750}.te-faq p{margin:9px 0 0;color:var(--muted)}.te-foot{margin-top:20px;padding:15px;border:1px solid var(--line);border-radius:12px;color:var(--muted);font-size:14px}\n@media(max-width:820px){.te-grid{grid-template-columns:1fr}.te-form-grid,.te-facts{grid-template-columns:1fr}.te-field-full{grid-column:auto}.te-head{padding:25px}.te-card-body,.te-section-body{padding:17px}}\n@media print{.te-actions,.te-warning{display:none!important}.te-result{display:block!important}.te-card,.te-section{box-shadow:none}}\n<\/style>\n<main id=\"vbm-turbo-eval\">\n  <header class=\"te-head\">\n    <h1>Large Turbomachinery Vibration Evaluation Evidence Worksheet<\/h1>\n    <p>Organize scope, measurement and source evidence for external review against ISO 20816-2:2017 with Amendment 1:2024. This worksheet checks documentation completeness only; it does not generate a vibration zone, diagnosis, alarm or operating instruction.<\/p>\n    <div class=\"te-tags\"><span class=\"te-tag\">ISO 20816-2:2017 \u00b7 Edition 1<\/span><span class=\"te-tag\">Confirmed 2023<\/span><span class=\"te-tag\">Amendment 1 \u00b7 2024<\/span><span class=\"te-tag\">&gt;40 MW \u00b7 fluid-film bearings<\/span><span class=\"te-tag\">Four exact rated speeds<\/span><span class=\"te-tag\">No automatic zone<\/span><\/div>\n  <\/header>\n  <div class=\"te-warning\"><strong>Not a machine-safety decision.<\/strong> A machine label and one vibration value cannot establish an ISO zone or justify continued operation, load reduction or shutdown. Use the licensed base standard and amendment, the exact machine and measurement configuration, site\/manufacturer limits, and an accountable qualified reviewer.<\/div>\n\n  <div class=\"te-grid\">\n    <section class=\"te-card\" aria-labelledby=\"te-record-title\">\n      <h2 class=\"te-card-head\" id=\"te-record-title\">Evaluation-evidence record<\/h2>\n      <div class=\"te-card-body\">\n        <form id=\"te-form\" novalidate>\n          <div class=\"te-form-grid\">\n            <div class=\"te-field\"><label for=\"te-machine\">Machine or shaftline family<\/label><select id=\"te-machine\" required><option value=\"\">Select documented family<\/option><option value=\"steam\">Steam turbine<\/option><option value=\"gas-land\">Land-based heavy-duty gas turbine<\/option><option value=\"generator\">Generator coupled with gas and\/or steam turbine<\/option><option value=\"shaftline\">Other covered shaftline component<\/option><option value=\"aero\">Aero-derivative gas turbine<\/option><option value=\"other\">Other or not established<\/option><\/select><\/div>\n            <div class=\"te-field\"><label for=\"te-installation\">Installation context<\/label><select id=\"te-installation\" required><option value=\"\">Select documented context<\/option><option value=\"land\">Land-based installation<\/option><option value=\"other\">Other installation<\/option><option value=\"unknown\">Unknown or not documented<\/option><\/select><\/div>\n            <div class=\"te-field\"><label for=\"te-output\">Machine output scope<\/label><select id=\"te-output\" required><option value=\"\">Select documented output scope<\/option><option value=\"above40\">Exceeds 40 MW<\/option><option value=\"at-or-below40\">40 MW or below<\/option><option value=\"unknown\">Unknown or not documented<\/option><\/select><\/div>\n            <div class=\"te-field\"><label for=\"te-bearing\">Main bearing type<\/label><select id=\"te-bearing\" required><option value=\"\">Select documented bearing type<\/option><option value=\"fluid-film\">Fluid-film bearings<\/option><option value=\"other\">Other bearing type<\/option><option value=\"unknown\">Unknown or not documented<\/option><\/select><\/div>\n            <div class=\"te-field\"><label for=\"te-speed\">Rated speed<\/label><select id=\"te-speed\" required><option value=\"\">Select exact rated speed<\/option><option value=\"1500\">1 500 r\/min<\/option><option value=\"1800\">1 800 r\/min<\/option><option value=\"3000\">3 000 r\/min<\/option><option value=\"3600\">3 600 r\/min<\/option><option value=\"other\">Other rated speed<\/option><option value=\"unknown\">Unknown or not documented<\/option><\/select><span class=\"te-hint\">The official scope lists four speeds, not a continuous 1 500 to 3 600 r\/min interval.<\/span><\/div>\n            <div class=\"te-field\"><label for=\"te-measurement\">Public measurement category<\/label><select id=\"te-measurement\" required><option value=\"\">Select the documented category<\/option><option value=\"main-radial\">Structural vibration at a main bearing housing\/pedestal, radial to the shaft<\/option><option value=\"thrust-axial\">Structural vibration at a thrust bearing housing, axial direction<\/option><option value=\"shaft-radial\">Rotating-shaft vibration at\/near a main bearing, radial to the shaft<\/option><option value=\"generator-electromagnetic\">Generator stator\/core\/housing electromagnetic vibration at twice line frequency<\/option><option value=\"combustion\">Combustion vibration<\/option><option value=\"other\">Other or not established<\/option><\/select><\/div>\n            <div class=\"te-field te-field-full\"><label for=\"te-component\">Machine, bearing and shaftline component identification<\/label><input id=\"te-component\" type=\"text\" maxlength=\"220\" required><span class=\"te-hint\">Identify the train, casing\/rotor, bearing number and relevant coupled component from the report.<\/span><\/div>\n            <div class=\"te-field\"><label for=\"te-position\">Measurement position<\/label><input id=\"te-position\" type=\"text\" maxlength=\"180\" required><\/div>\n            <div class=\"te-field\"><label for=\"te-direction\">Measurement direction<\/label><input id=\"te-direction\" type=\"text\" maxlength=\"140\" required><\/div>\n            <div class=\"te-field\"><label for=\"te-quantity\">Reported assessment quantity and amplitude convention<\/label><input id=\"te-quantity\" type=\"text\" maxlength=\"160\" required placeholder=\"e.g. broad-band velocity RMS or shaft displacement p-p\"><\/div>\n            <div class=\"te-field\"><label for=\"te-unit\">Reported unit<\/label><input id=\"te-unit\" type=\"text\" maxlength=\"100\" required><\/div>\n            <div class=\"te-field te-field-full\"><label for=\"te-band\">Frequency band, filtering and signal processing<\/label><input id=\"te-band\" type=\"text\" maxlength=\"240\" required><span class=\"te-hint\">Do not infer a protected band or processing rule from the former simplified tables.<\/span><\/div>\n            <div class=\"te-field\"><label for=\"te-state\">Operating-state category<\/label><select id=\"te-state\" required><option value=\"\">Select documented state<\/option><option value=\"steady\">Normal steady-state operation<\/option><option value=\"transient\">Run-up, run-down, initial loading or load change<\/option><option value=\"change-steady\">Change during normal steady-state operation<\/option><option value=\"other\">Other or not established<\/option><\/select><\/div>\n            <div class=\"te-field\"><label for=\"te-change\">Change\/trend reference and time basis<\/label><input id=\"te-change\" type=\"text\" maxlength=\"200\" required><\/div>\n            <div class=\"te-field te-field-full\"><label for=\"te-operation\">Operating condition during measurement<\/label><textarea id=\"te-operation\" maxlength=\"500\" required><\/textarea><span class=\"te-hint\">Record load, thermal state, rated\/actual speed, excitation and whether the state was stable or transient.<\/span><\/div>\n            <div class=\"te-field te-field-full\"><label for=\"te-chain\">Transducer, mounting, probe geometry and measurement chain<\/label><textarea id=\"te-chain\" maxlength=\"600\" required><\/textarea><\/div>\n            <div class=\"te-field\"><label for=\"te-report\">Measurement report or dataset ID<\/label><input id=\"te-report\" type=\"text\" maxlength=\"160\" required><\/div>\n            <div class=\"te-field\"><label for=\"te-report-date\">Report date<\/label><input id=\"te-report-date\" type=\"date\" required><\/div>\n            <div class=\"te-field\"><label for=\"te-reviewer\">Qualified reviewer<\/label><input id=\"te-reviewer\" type=\"text\" maxlength=\"160\" required><\/div>\n            <div class=\"te-field\"><label for=\"te-review-date\">Review date<\/label><input id=\"te-review-date\" type=\"date\" required><\/div>\n            <div class=\"te-field te-field-full\"><label for=\"te-gaps\">Known gaps or unresolved questions<\/label><textarea id=\"te-gaps\" maxlength=\"600\"><\/textarea><\/div>\n          <\/div>\n\n          <fieldset class=\"te-evidence\">\n            <legend>Evidence categories present<\/legend>\n            <div class=\"te-checks\">\n              <label class=\"te-check\"><input id=\"te-ev-edition\" type=\"checkbox\"><span>The base edition and Amendment 1 are both identified.<small>ISO 20816-2:2017 Edition 1 plus ISO 20816-2:2017\/Amd 1:2024.<\/small><\/span><\/label>\n              <label class=\"te-check\"><input id=\"te-ev-scope\" type=\"checkbox\"><span>Land-based installation, output, fluid-film bearings and one exact rated speed are evidenced.<small>All four are controlling public-scope characteristics.<\/small><\/span><\/label>\n              <label class=\"te-check\"><input id=\"te-ev-exclusions\" type=\"checkbox\"><span>The public exclusions were screened and recorded.<small>Include aero-derivative, electromagnetic twice-line-frequency and combustion-vibration distinctions where relevant.<\/small><\/span><\/label>\n              <label class=\"te-check\"><input id=\"te-ev-position\" type=\"checkbox\"><span>Position and direction match the applicable measurement category.<small>Main-bearing radial, thrust-bearing axial and rotating-shaft radial are distinct public categories.<\/small><\/span><\/label>\n              <label class=\"te-check\"><input id=\"te-ev-chain\" type=\"checkbox\"><span>The complete measurement chain and probe\/sensor geometry are documented.<small>Include mounting, orientation, acquisition and relevant processing configuration.<\/small><\/span><\/label>\n              <label class=\"te-check\"><input id=\"te-ev-quantity\" type=\"checkbox\"><span>Quantity, amplitude convention, unit, band and processing are documented.<small>Do not substitute a generic mm\/s or micrometre label for the licensed procedure.<\/small><\/span><\/label>\n              <label class=\"te-check\"><input id=\"te-ev-state\" type=\"checkbox\"><span>The steady, transient or change operating-state context is documented.<small>The public abstract explicitly distinguishes these evaluation contexts.<\/small><\/span><\/label>\n              <label class=\"te-check\"><input id=\"te-ev-licensed\" type=\"checkbox\"><span>Every zone and change criterion comes from the licensed base text plus amendment.<small>Record exact clauses\/tables, conditions and boundary convention outside this website.<\/small><\/span><\/label>\n              <label class=\"te-check\"><input id=\"te-ev-site\" type=\"checkbox\"><span>Site, manufacturer and protection-system limits are separately identified.<small>Do not replace plant procedures or trip logic with a generic web zone.<\/small><\/span><\/label>\n              <label class=\"te-check\"><input id=\"te-ev-report\" type=\"checkbox\"><span>The traceable report\/dataset and review basis are complete.<small>Link the evidence to the exact machine, configuration, state and date.<\/small><\/span><\/label>\n              <label class=\"te-check\"><input id=\"te-ev-review\" type=\"checkbox\"><span>An accountable qualified reviewer applies the licensed criteria.<small>This website never supplies a zone, diagnosis, alarm, load-reduction or shutdown decision.<\/small><\/span><\/label>\n            <\/div>\n          <\/fieldset>\n          <div class=\"te-actions\"><button class=\"te-btn\" type=\"submit\">Check evidence completeness<\/button><button class=\"te-btn te-btn-secondary\" id=\"te-clear\" type=\"button\">Clear worksheet<\/button><\/div>\n          <div class=\"te-result\" id=\"te-result\" role=\"status\" aria-live=\"polite\">\n            <h3 id=\"te-result-title\">Not assessed<\/h3><p id=\"te-result-summary\"><\/p><ul id=\"te-result-list\"><\/ul>\n            <p class=\"te-result-note\">This output is not an ISO zone, diagnosis, alarm, acceptance result or instruction to continue, reduce load or stop a machine.<\/p>\n          <\/div>\n        <\/form>\n      <\/div>\n    <\/section>\n\n    <aside class=\"te-card\" aria-labelledby=\"te-boundary-title\">\n      <h2 class=\"te-card-head\" id=\"te-boundary-title\">Verified public boundary<\/h2>\n      <div class=\"te-card-body\">\n        <span class=\"te-status\">VERIFIED_OFFICIAL_STANDARD_RECORD<\/span>\n        <ul class=\"te-side-list\">\n          <li>ISO 20816-2:2017 Edition 1 remains current after confirmation in 2023.<\/li>\n          <li>ISO 20816-2:2017\/Amd 1:2024 is published and applies to the base document.<\/li>\n          <li>Public scope: land-based gas\/steam turbines and coupled generators above 40 MW, fluid-film bearings, at exactly 1 500, 1 800, 3 000 or 3 600 r\/min.<\/li>\n          <li>Public measurement categories distinguish radial main-bearing structural vibration, axial thrust-bearing structural vibration and radial rotating-shaft vibration near main bearings.<\/li>\n          <li>Steady-state, transient and change-during-steady-state contexts are separately recognized.<\/li>\n          <li>Public exclusions include aero-derivatives, specified twice-line-frequency electromagnetic vibration and combustion-vibration evaluation.<\/li>\n        <\/ul>\n        <div class=\"te-needs\"><strong>NEEDS_LICENSED_SOURCE<\/strong><br>Exact numerical zones, change criteria, bands, processing, boundary conventions and operating-limit procedures are protected. No numeric boundary is reproduced here.<\/div>\n      <\/div>\n    <\/aside>\n  <\/div>\n\n  <section class=\"te-section\" aria-labelledby=\"te-facts-title\">\n    <h2 id=\"te-facts-title\">What the official public record establishes<\/h2>\n    <div class=\"te-section-body te-facts\">\n      <div class=\"te-fact\"><strong>Four discrete rated speeds.<\/strong> The scope lists 1 500, 1 800, 3 000 and 3 600 r\/min. It does not say every speed inside that interval.<\/div>\n      <div class=\"te-fact\"><strong>Machine construction matters.<\/strong> Land-based installation, output above 40 MW and fluid-film bearings are all part of the scope.<\/div>\n      <div class=\"te-fact\"><strong>Gas turbines are included too.<\/strong> The official title is broader than the former page title, while aero-derivative gas turbines are excluded.<\/div>\n      <div class=\"te-fact\"><strong>Position and direction matter.<\/strong> Main-bearing housing radial, thrust-bearing housing axial and rotating-shaft radial measurements are distinct.<\/div>\n      <div class=\"te-fact\"><strong>Operating state matters.<\/strong> Normal steady state, run-up\/run-down\/loading changes and changes during steady operation are not interchangeable contexts.<\/div>\n      <div class=\"te-fact\"><strong>Current basis includes an amendment.<\/strong> A 2025 webpage that cites only the base number does not prove it applied the 2024 technical change.<\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"te-section\" aria-labelledby=\"te-sources-title\">\n    <h2 id=\"te-sources-title\">Standard and source register<\/h2>\n    <div class=\"te-section-body te-source-wrap\">\n      <table class=\"te-table\">\n        <thead><tr><th>ID<\/th><th>Source and lifecycle<\/th><th>Verified public support<\/th><th>Not supported publicly<\/th><\/tr><\/thead>\n        <tbody>\n          <tr id=\"source-S1\"><td>S1<\/td><td><a href=\"https:\/\/www.iso.org\/standard\/70047.html\" rel=\"noopener\" target=\"_blank\">ISO 20816-2:2017<\/a><br>Edition 1 \u00b7 confirmed 2023 \u00b7 current<\/td><td>Machine, output, bearing, exact-speed, position\/direction, operating-state and exclusion scope.<\/td><td>Closed numerical zones, change criteria, bands, processing and operating-limit procedure.<\/td><\/tr>\n          <tr id=\"source-S2\"><td>S2<\/td><td><a href=\"https:\/\/www.iso.org\/standard\/87294.html\" rel=\"noopener\" target=\"_blank\">ISO 20816-2:2017\/Amd 1:2024<\/a><br>Edition 1 \u00b7 published 2024-06<\/td><td>A current amendment exists and applies to the 2017 base.<\/td><td>The public card does not reveal the technical change or validate old numbers.<\/td><\/tr>\n          <tr id=\"source-S3\"><td>S3<\/td><td><a href=\"https:\/\/www.iso.org\/standard\/70047.html\" rel=\"noopener\" target=\"_blank\">ISO 7919-2:2009 and ISO 10816-2:2009 lifecycle<\/a><br>Withdrawn predecessors<\/td><td>Official lifecycle relationship to ISO 20816-2:2017.<\/td><td>No proof that withdrawn tables or wording are unchanged after consolidation and amendment.<\/td><\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n  <\/section>\n\n  <section class=\"te-section te-faq\" aria-labelledby=\"te-notes-title\">\n    <h2 id=\"te-notes-title\">Review notes<\/h2>\n    <div class=\"te-section-body\">\n      <details><summary>Why does this page no longer output Zone A, B, C or D?<\/summary><p>The former six boundaries lacked a checked licensed base-plus-amendment source, exact measurement configuration, operating state, processing and boundary convention. A numeric zone would therefore be unsupported.<\/p><\/details>\n      <details><summary>Does 1 500 to 3 600 r\/min describe the scope?<\/summary><p>No. The official public scope lists four discrete rated speeds: 1 500, 1 800, 3 000 and 3 600 r\/min. Other rated speeds are explicitly outside this part&#8217;s stated scope.<\/p><\/details>\n      <details><summary>Does the worse of housing and shaft readings automatically govern?<\/summary><p>No such universal shortcut was verified from the public record. The licensed procedure, applicable position\/direction criteria, change criteria, machine configuration and site\/manufacturer rules must be applied by a qualified reviewer.<\/p><\/details>\n      <details><summary>Can this worksheet recommend continued operation, load reduction or shutdown?<\/summary><p>No. Operational decisions require plant protection logic, site and manufacturer limits, trend and corroborating evidence, the licensed base standard plus amendment, and accountable engineering review.<\/p><\/details>\n    <\/div>\n  <\/section>\n  <p class=\"te-foot\">Source access: 17 July 2026. No closed ISO clause, amendment text, table, coefficient or numeric boundary is copied or inferred. The previous six boundaries, automatic zones, diagnostic messages and operating instructions were removed because their current normative basis was not verified.<\/p>\n<\/main>\n<script>\n(function(){\n'use strict';\nvar form=document.getElementById('te-form'),result=document.getElementById('te-result'),title=document.getElementById('te-result-title'),summary=document.getElementById('te-result-summary'),list=document.getElementById('te-result-list');\nvar requiredFields=['te-machine','te-installation','te-output','te-bearing','te-speed','te-measurement','te-component','te-position','te-direction','te-quantity','te-unit','te-band','te-state','te-change','te-operation','te-chain','te-report','te-report-date','te-reviewer','te-review-date'];\nvar evidenceIds=['te-ev-edition','te-ev-scope','te-ev-exclusions','te-ev-position','te-ev-chain','te-ev-quantity','te-ev-state','te-ev-licensed','te-ev-site','te-ev-report','te-ev-review'];\nfunction labelFor(id){var label=document.querySelector('label[for=\"'+id+'\"]');return label?label.firstChild.textContent.trim():id}\nfunction addItem(text){var item=document.createElement('li');item.textContent=text;list.appendChild(item)}\nfunction clearList(){while(list.firstChild)list.removeChild(list.firstChild)}\nfunction stale(){result.className='te-result';title.textContent='Not assessed';summary.textContent='';clearList()}\nfunction scopeConflicts(){var conflicts=[],machine=document.getElementById('te-machine').value,installation=document.getElementById('te-installation').value,output=document.getElementById('te-output').value,bearing=document.getElementById('te-bearing').value,speed=document.getElementById('te-speed').value,measurement=document.getElementById('te-measurement').value,state=document.getElementById('te-state').value;if(installation!=='land')conflicts.push('The verified public scope is for land-based machines.');if(output!=='above40')conflicts.push('The verified public scope requires power output exceeding 40 MW.');if(bearing!=='fluid-film')conflicts.push('The verified public scope requires fluid-film bearings.');if(['1500','1800','3000','3600'].indexOf(speed)===-1)conflicts.push('The verified public scope lists only rated speeds of 1 500, 1 800, 3 000 or 3 600 r\/min.');if(machine==='aero')conflicts.push('Aero-derivative gas turbines are excluded from the public scope.');if(machine==='other')conflicts.push('The machine family is not established within the verified public scope.');if(measurement==='generator-electromagnetic')conflicts.push('Specified twice-line-frequency electromagnetic generator stator\/core\/housing vibration is excluded.');if(measurement==='combustion')conflicts.push('Combustion-vibration evaluation is excluded.');if(measurement==='other')conflicts.push('The measurement category is not established within the verified public scope.');if(state==='other')conflicts.push('The operating-state context is not established for the licensed evaluation.');return conflicts}\nform.addEventListener('submit',function(event){event.preventDefault();clearList();var missing=[];requiredFields.forEach(function(id){var el=document.getElementById(id),value=el.value.trim();if(!value||!el.validity.valid)missing.push(labelFor(id))});var unchecked=[];evidenceIds.forEach(function(id){var el=document.getElementById(id);if(!el.checked)unchecked.push(el.closest('label').querySelector('span').firstChild.textContent.trim())});var conflicts=scopeConflicts();if(missing.length||unchecked.length){result.className='te-result te-visible te-incomplete';title.textContent='Documentation incomplete';summary.textContent='Complete the missing record fields and evidence categories before external review.';missing.forEach(function(text){addItem('Missing record: '+text)});unchecked.forEach(function(text){addItem('Evidence not confirmed: '+text)})}else if(conflicts.length){result.className='te-result te-visible te-conflict';title.textContent='Scope, exclusion or configuration conflict';summary.textContent='Resolve the documented scope before applying any licensed evaluation procedure.';conflicts.forEach(function(text){addItem(text)})}else{result.className='te-result te-visible te-ready';title.textContent='Evidence package ready for external review';summary.textContent='All worksheet records and evidence categories are marked present. A qualified reviewer must still apply the licensed base standard, amendment and accountable operational procedures.'}result.scrollIntoView({block:'nearest'})});\nform.addEventListener('input',stale);form.addEventListener('change',stale);document.getElementById('te-clear').addEventListener('click',function(){form.reset();stale();document.getElementById('te-machine').focus()});\n})();\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Organize scope, measurement and source evidence for external ISO 20816-2:2017 plus Amendment 1:2024 review. 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