{"id":7840,"date":"2025-06-29T21:38:11","date_gmt":"2025-06-30T00:38:11","guid":{"rendered":"https:\/\/vinq.us\/?p=7840"},"modified":"2025-07-02T18:42:06","modified_gmt":"2025-07-02T21:42:06","slug":"evolucao-classificacao-barragens-brasil","status":"publish","type":"post","link":"https:\/\/vinq.us\/en\/evolucao-classificacao-barragens-brasil\/","title":{"rendered":"The evolution of dam classification in Brazil"},"content":{"rendered":"
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THE <\/span>dam safety<\/b> in Brazil has undergone important transformations in recent decades. What was previously guided only by structural and dimensional criteria, today incorporates <\/span>integrated approaches to risk, potential harm and technical governance<\/b>. This evolution reflects the maturation of national legislation and the lessons learned from tragedies that have affected the sector.<\/span><\/p>

Absence of Unified Legislation<\/b><\/h2>

Until the end of the 1990s, Brazil did not have a <\/span>specific legal framework for dam safety<\/b>. Management was decentralized between sectors such as energy, mining and irrigation, each with its own internal regulations, creating gaps in the assessment of risks and responsibilities.<\/span><\/p>

First Normative Inflection: CONAMA Resolution No. 237\/1997<\/b><\/h2>

Resolution No. 237 introduced the <\/span>environmental licensing<\/b> for projects with potential impact, including dams. Although relevant, it did not yet directly address structural safety or accident prevention.<\/span><\/p>

Regulatory Framework<\/b><\/h2>

Law No. 12,334\/2010 \u2013 National Dam Safety Policy (PNSB)<\/b><\/h3>

Published in 2010, the <\/span>Law No. 12,334<\/b> established a unified national system. Its main advances include:<\/span><\/p>

  • Creation of <\/span>Dam Safety Plan (PSB)<\/b> as a legal requirement;<\/span>
    <\/span><\/li>
  • Institution of the <\/span>National Registry of Dams<\/b>;<\/span>
    <\/span><\/li>
  • Introduction of the concepts of <\/span>Risk Category (CRI)<\/b> and <\/span>Potential Associated Damage (PAD)<\/b>;<\/span>
    <\/span><\/li>
  • Periodic inspection by sectoral bodies.<\/span>
    <\/span><\/li><\/ul>

    Challenge:<\/b> Despite the progress, there were practical obstacles, such as the lack of resources for regulatory bodies and the absence of stricter sanctions.<\/span><\/p>

    Reinforcement of the PNSB<\/b><\/h2>

    Law No. 14,066\/2020<\/b><\/h3>

    Approved after the accidents at tailings dams, this law made the legal framework more robust, with measures such as:<\/span><\/p>

    • Ban on upstream dams<\/b> (mining);<\/span>
      <\/span><\/li>
    • Mandatory <\/span>Hypothetical Rupture Studies (HRS)<\/b> in dams with high DPA;<\/span>
      <\/span><\/li>
    • Increase in <\/span>transparency and risk communication<\/b>;<\/span>
      <\/span><\/li>
    • More severe penalties<\/b> in case of non-compliance;<\/span>
      <\/span><\/li>
    • Civil, criminal and administrative liability<\/b> more rigorous.<\/span><\/li><\/ul>

      Technical Evolution: From Structure to Risk<\/b><\/h2>

      The classification of dams now considers three pillars:<\/span><\/p>

      1. Reservoir height and volume<\/b> \u2013 Defines the legal framework of the structure;<\/span>
        <\/span><\/li>
      2. Risk Category (CRI)<\/b> \u2013 Evaluates design, conservation, operation and documentation;<\/span>
        <\/span><\/li>
      3. Potential Associated Damage (PAD)<\/b> \u2013 Measures human, environmental and economic impacts in the event of a failure.<\/span><\/li><\/ol>

        Risk Management Tools<\/b><\/h3>
        • EAP (Emergency Action Plan)<\/b>
          <\/b><\/li>
        • Flood Maps and Self-Rescue Zones (ZAS)<\/b>
          <\/b><\/li>
        • Automated and real-time monitoring<\/b>
          <\/b><\/li>
        • Hydraulic and geotechnical simulations<\/b>
          <\/b><\/li><\/ul>

          Brazil began to adopt tools such as <\/span>Bow-Tie, FMEA<\/b> and <\/span>fault trees<\/b>, aligned with the <\/span>preventive management and operational safety culture<\/b>.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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          \u00a0<\/p>

          International Comparison: Global Convergence, Local Approaches<\/b><\/h2>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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          Country\/Region\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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          Main Criteria<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
          \n\t\t\t\t
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          Classification Levels\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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          Relevant Observations\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
          \n\t\t
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          Brazil<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
          \n\t\t\t\t
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          CRI + DPA, height and volume<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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          High, Medium, Low\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
          \n\t\t\t\t
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          Legal and social focus; governed by Laws No. 12,334\/2010 and 14,066\/2020<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
          \n\t\t
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          USA<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
          \n\t\t\t\t
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          Consequences of failure\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
          \n\t\t\t\t
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          High, Significant, Low<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
          \n\t\t\t\t
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          Based on FEMA and USACE; focus on human and economic losses<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
          \n\t\t
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          Canada<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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          Consequence + probability\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
          \n\t\t\t\t
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          Very High, High, Moderate, Low<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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          CDA Matrix Approach: Risk vs. Consequence<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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          Australia<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
          \n\t\t\t\t
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          Consequences of failure<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
          \n\t\t\t\t
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          Extreme, High A\/B, Significant, Low<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
          \n\t\t\t\t
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          ANCOLD: critical scenario analysis<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
          \n\t\t
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          South Africa<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
          \n\t\t\t\t
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          Potential risk + structural condition<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
          \n\t\t\t\t
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          Category I, II, III<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
          \n\t\t\t\t
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          Emphasis on integrated risk management<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
          \n\t\t
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          European Union\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
          \n\t\t\t\t
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          Potential impact + local standards<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
          \n\t\t\t\t
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          Category A, B, C\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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          Variable application between countries according to Directive 2007\/60\/EC<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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          \u00a0<\/p>

          Global Trends in Dam Safety<\/b><\/h2>
          • Centrality in potential harm<\/b> (focus on human lives and environmental impacts);<\/span>
            <\/span><\/li>
          • Risk analysis as a decision-making tool<\/b> (Bow-Tie, FMEA, modeling);<\/span>
            <\/span><\/li>
          • Transparency and social participation<\/b> in regulatory processes;<\/span>
            <\/span><\/li>
          • Continuous monitoring and real-time data<\/b> as an emerging pattern.<\/span>
            <\/span><\/li><\/ul>

            Key Differences:<\/b><\/h3>
            • Brazil uses a <\/span>double rating (CRI + DPA)<\/b>.<\/span>
              <\/span><\/li>
            • US and Canada prioritize <\/span>consequences of failure<\/b>, with qualitative and quantitative analyses.<\/span>
              <\/span><\/li>
            • In the European Union, standardization <\/span>varies between member countries<\/b>.<\/span>

              <\/span><\/li><\/ul>

              Current Challenges in Brazil<\/b><\/h2>

              Despite progress, obstacles remain:<\/span><\/p>

              • Operational limitations of supervisory bodies<\/b>;<\/span>
                <\/span><\/li>
              • Lack of <\/strong>data integration between federal and state spheres<\/b>;<\/span>
                <\/span><\/li>
              • Low engagement of surrounding communities<\/b>;<\/span>
                <\/span><\/li>
              • New climate and cyber threats need to be incorporated into risk analysis.<\/strong>
                <\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
                \n\t\t\t\t
                \n\t\t\t\t\t\t\t
                \n\t\t\t\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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                VinQ's Commitment to Safety and the Future<\/b><\/h2>

                In the <\/span>VinQ<\/b>, we understand that <\/span>Classifying and monitoring dams goes beyond legal compliance<\/b>. It is a mission of responsibility towards society and future generations.<\/span><\/p>

                We offer:<\/strong><\/h3>
                • Rupture studies with high-precision simulations<\/b>
                  <\/b><\/b><\/li>
                • Analysis based on ISO 31000 Risk Management<\/b>
                  <\/b><\/b><\/li>
                • Decharacterization and technical regularization plans<\/b>
                  <\/b><\/b><\/li>
                • Integrated security management with a focus on ESG and technical governance<\/b><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

                  See how Brazilian legislation transformed the classification of dams, integrating risk, potential damage and governance to protect lives and the environment.<\/p>","protected":false},"author":3,"featured_media":7841,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[18],"tags":[],"class_list":["post-7840","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-barragens"],"yoast_head":"\nA evolu\u00e7\u00e3o da classifica\u00e7\u00e3o de barragens no Brasil - VinQ \u00b7 Geotecnia<\/title>\n<meta name=\"description\" content=\"Veja como a legisla\u00e7\u00e3o brasileira transformou a classifica\u00e7\u00e3o de barragens, integrando risco, dano potencial e governan\u00e7a para proteger vidas e o meio ambiente.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/vinq.us\/en\/evolucao-classificacao-barragens-brasil\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A evolu\u00e7\u00e3o da classifica\u00e7\u00e3o de barragens no Brasil - 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