{"id":10041,"date":"2025-02-12T00:00:00","date_gmt":"2025-02-11T23:00:00","guid":{"rendered":"https:\/\/engie-copro.my\/explore\/explainer\/a-safety-engineer-at-the-bedside-of-notre-dame-de-paris\/"},"modified":"2026-03-12T10:52:18","modified_gmt":"2026-03-12T09:52:18","slug":"a-safety-engineer-at-the-bedside-of-notre-dame-de-paris","status":"publish","type":"page","link":"https:\/\/www.engie.com\/en\/explore\/explainer\/a-safety-engineer-at-the-bedside-of-notre-dame-de-paris\/","title":{"rendered":"A safety engineer at the bedside of Notre-Dame de Paris"},"content":{"rendered":"\n\n<div id=\"block_9cda6e8ad0cc1cb5d018be2fc0c35013\" class=\"cp-edito-herobanner relative teq-container  noBg z-0 !pt-[115px] lg:!pt-[150px]\">\n    <!--<div class=\"auras-bg  w-screen left-1\/2 -translate-x-1\/2\" data-color=\"soft\"><\/div>-->\n    <div class=\"teq-grid relative z-0\">\n        <div class=\"col-span-12  px-0 lg:col-start-2 lg:col-span-10 hero-top\">\n\n            <div class=\"teq-grid\">\n                <div class=\"col-span-12 desktop-only  \">\n                    <nav role=\"navigation\" aria-label=\"breadcrumb\" class=\"mb-24 cp-breadcrumb desktop-only\">\n            <ol id=\"custom-breadcrumb\" class=\"nj-breadcrumb\"><li class=\"nj-breadcrumb__item\"><span><a href=\"https:\/\/www.engie.com\/en\/\" class=\"nj-link nj-link--sm nj-link--grayed nj-link-icon\">\n        <span aria-hidden=\"true\" class=\"material-icons\">\n            home\n        <\/span>\n        <span class=\"nj-sr-only\">\n            Home\n        <\/span>\n     <\/a><\/li>  <li class=\"nj-breadcrumb__item\" aria-current=\"page\">A safety engineer at the bedside of Notre-Dame de Paris<\/li><\/span><\/ol>    <\/nav>                <\/div>\n            <\/div>\n\n                            <div class=\"title mt-4\">\n                    <h1 data-trad class=\"nj-heading--2xl nj-weight--bold flex flex-col \">\n                        <p>A safety engineer at the bedside of Notre-Dame de Paris<\/p>\n                    <\/h1>\n                <\/div>\n            \n            <div class=\"infos flex flex-wrap items-center gap-16 mt-32\">\n\n                                    <div class=\"tags flex flex-wrap gap-8 items-center\">\n                        <div class=\"nj-tag nj-tag--sm bordered nj-tag--purple\">\n    <p class=\"nj-tag__text force-dark\" data-trad>\n        Corporate    <\/p>\n<\/div>\n    <!--\n    <div class=\"nj-tag\">\n        <p class=\"nj-tag__text\">tag<\/p> <span aria-hidden=\"true\" class=\"nj-tag__icon nj-icon-material material-icons\">check<\/span>\n\n    <\/div>\n    -->\n\n                    <\/div>\n                \n                                    <div class=\"time flex gap-4 items-center whitespace-nowrap nj-color--signature\">\n                        <span aria-hidden=\"true\" class=\"material-icons nj-icon-material nj-icon-material--blue\">schedule<\/span>\n                        <span data-trad>Published on<\/span> <span class=\"lowercase\" data-trad> 12 Feb. 2025<\/span>\n                    <\/div>\n                \n                            <\/div>\n        <\/div>\n    <\/div>\n    <div class=\"teq-grid  lg:mt-80 relative w-[100vw] left-1\/2 !pb-0 -translate-x-1\/2 toPin px-0 z-10\">\n        <div class=\"img col-span-12 nj-bg--dark mt-8 lg:mt-0 relative\">\n            <div class=\"nj-fluid-progress-bar absolute -top-[6px] left-0 w-[90%] lg:w-[75%]\"><\/div>\n                        <div class=\"flex justify-center items-center w-full nj-bg--ultramarine py-0 lg:py-[164px] lg:h-screen media-c\">\n                <div class=\"w-full h-full lg:h-screen overflow-hidden\">\n                    <div class=\"w-full h-full lg:h-screen overflow-hidden relative\">\n\n                                                    \n                            <picture class=\"block w-full h-full scale-[1.3] media scale-125 \" style=\"margin:  0 auto\">\n                                <source media=\"(max-width: 767px)\"\n                                    srcset=\"https:\/\/www.engie.com\/app\/uploads\/2026\/02\/header-article-notre-dame.jpg\" \/>\n                                <source media=\"(min-width: 768px)\"\n                                    srcset=\"https:\/\/www.engie.com\/app\/uploads\/2026\/02\/header-article-notre-dame.jpg\" \/>\n                                <!--TODO AMBRE if zoom ajotuer classe : open-modal-zoom cursor-pointer  -->\n                                <img decoding=\"async\" class=\"w-full h-full object-cover\"\n                                    loading=\"eager\"\n                                    fetchpriority=\"high\"\n                                    src=\"https:\/\/www.engie.com\/app\/uploads\/2026\/02\/header-article-notre-dame.jpg\"\n                                    alt=\"\" \/>\n                            <\/picture>\n\n                        \n                        \n                        \n                        <div class=\"transcription hidden\" data-video=\"\" data-video-webm=\"\">\n                                                    <\/div>\n\n                    <\/div>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n\n\n<div id=\"block_c5c787c1bf47df46a87ba1abc072fbbe\" class=\"cp-introdution teq-container relative nj-aura nj-aura--white\">\n    <div class=\"teq-grid\">\n        <div class=\"col-span-6 lg:col-start-3 lg:col-span-8 2xl:col-span-6 2xl:col-start-4 relative top text-center\">\n                        <div class=\"nj-heading--sm relative z-10 nj-color--grey-1000\" data-trad data-trad-html>\n                <div class=\"el-wysiwyg data-trad\">\n    <p>You can be both a safety engineer at ENGIE Lab Crigen and a geoarchaeology expert\u2014that\u2019s the case for Jean-Pierre, who contributed to the reconstruction of the iconic cathedral. Too good of an opportunity to not share his unique experience!<\/p>\n<\/div>\n            <\/div>\n            \n                    <\/div>\n    <\/div>\n<\/div>\n\n\n\nNULL\n<div id=\"block_98d61bf933727a022301253de824476d\" class=\"cp-media-text teq-container relative nj-aura nj-aura--white \">\n  <div class=\"teq-grid relative\">\n        <div class=\"col-span-6 lg:col-span-12 relative   \">\n        <div class=\"teq-grid\">\n        <div class=\"col-span-6 lg:col-start-1 lg:col-span-6  order-1 lg:order-none mt-32 lg:mt-0\">\n          <div class=\"media-wrapper relative aspect-[528\/330] \">\n\n            \n                                          <picture>\n                <source media=\"(max-width: 767px)\"\n                  srcset=\"https:\/\/www.engie.com\/app\/uploads\/2026\/02\/notre-dame-1.jpg\" \/>\n                <source media=\"(min-width: 768px)\"\n                  srcset=\"https:\/\/www.engie.com\/app\/uploads\/2026\/02\/notre-dame-1.jpg\" \/>\n                <img decoding=\"async\"\n                  class=\"w-full object-fit-cover aspect-[528\/330]\"\n                  src=\"https:\/\/www.engie.com\/app\/uploads\/2026\/02\/notre-dame-1.jpg\"\n                  alt=\"\" \/>\n              <\/picture>\n            \n          <\/div>\n\n                    <div class=\"transcription hidden\" data-video=\"\" data-video-webm=\"\">\n                        <\/div>\n          <p class=\"nj-text--xs italic mt-8 \" data-trad>\n                      <\/p>\n\n            <!--\n                    -->\n        <\/div>\n\n        <div class=\"col-span-6 lg:col-span-4 lg:col-start-8 mt-32 lg:mt-0\">\n\n                      <h2 class=\"nj-heading--lg font-bold nj-color-link\" data-trad data-trad-html>\n              <p>What\u2019s the connection between ENGIE and the reconstruction of Notre-Dame de Paris?<\/p>\n            <\/h2>\n          \n                      <div class=\"wysiwyg mt-16 nj-color-link\" data-trad data-trad-html>\n              <p>I work as a safety engineer at ENGIE Lab Crigen in Stains, near Paris, but I also hold a PhD in earth sciences and am an associate researcher at the University of Paris 1 Panth\u00e9on-Sorbonne. Over the years, I\u2019ve developed expertise in geoarchaeology, specifically focusing on monuments in Paris and the surrounding areas. I\u2019ve published several papers* on building stones, particularly on the stone trade from antiquity to modern times.<\/p>\n            <\/div>\n          \n                  <\/div>\n      <\/div>\n\n    <\/div>\n  <\/div>\n\n<\/div>\n\n\n\n<div id=\"block_f0a439db95eb07dd594f7e72ba700d7d\" class=\"cp-wysiwyg teq-container nj-aura nj-aura--white\">\n    <div class=\"teq-grid !pt-0\">\n        <div class=\"col-span-6 xl:col-start-2 xl:col-span-10 lg:col-start-1 lg:col-span-12 \">\n                        <div class=\"teq-wysiwyg\">\n                <div data-trad data-trad-html><h2>Tell us about your role in restoring Notre-Dame after the devastating 2019 fire.<\/h2>\n<p>Alongside <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/urldefense.com\/v3\/__https:\/www.linkedin.com\/in\/lise-leroux-435781189\/__;!!La4veWw!2DMpwabRsWj_bAdv9SdXgI6FO_OJi8NKLopj4AbmcJk6IvHGJHx_n50KcWxHmEAymvnQvWk3dADtU2FBYF5p$\">Lise Leroux<\/a>, a geologist at the <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https:\/\/www.lrmh.fr\/\">Historical Monuments Research Laboratory<\/a>, we were both called upon by the architects overseeing the reconstruction\u2014specifically, those in the \u201cStone and Mortar, Monumental D\u00e9cor\u201d working group under the authority of the public institution responsible for the conservation and restoration of Notre-Dame de Paris. This group brought together 33 researchers specializing in building archaeology, geochemistry, geophysics, art history, the history of science and technology, and solid-state physics.<\/p>\n<p>Our mission as geologists was to identify the different types and qualities of stone in the masonry, find out where both the medieval and modern stones came from, and propose quarries that had the potential to supply those necessary for the restoration. It was real detective work.<\/p>\n<\/div>\n            <\/div>\n                    <\/div>\n    <\/div>\n<\/div>\n\n\n\nNULL\n<div id=\"block_6a3455075904cab859cb23b7f4b9a582\" class=\"cp-media-text teq-container relative nj-aura nj-aura--white \">\n  <div class=\"teq-grid relative\">\n        <div class=\"col-span-6 lg:col-span-12 relative   \">\n        <div class=\"teq-grid\">\n        <div class=\"col-span-6 lg:col-start-7 lg:col-span-6 order-1 mt-32 lg:mt-0\">\n          <div class=\"media-wrapper relative aspect-[528\/330] \">\n\n            \n                                          <picture>\n                <source media=\"(max-width: 767px)\"\n                  srcset=\"https:\/\/www.engie.com\/app\/uploads\/2026\/02\/notre-dame-2.jpg\" \/>\n                <source media=\"(min-width: 768px)\"\n                  srcset=\"https:\/\/www.engie.com\/app\/uploads\/2026\/02\/notre-dame-2.jpg\" \/>\n                <img decoding=\"async\"\n                  class=\"w-full object-fit-cover aspect-[528\/330]\"\n                  src=\"https:\/\/www.engie.com\/app\/uploads\/2026\/02\/notre-dame-2.jpg\"\n                  alt=\"\" \/>\n              <\/picture>\n            \n          <\/div>\n\n                    <div class=\"transcription hidden\" data-video=\"\" data-video-webm=\"\">\n                        <\/div>\n          <p class=\"nj-text--xs italic mt-8 \" data-trad>\n                      <\/p>\n\n            <!--\n                    -->\n        <\/div>\n\n        <div class=\"col-span-6 lg:col-span-4 lg:col-start-2 lg:mt-0\">\n\n                      <h2 class=\"nj-heading--lg font-bold nj-color-link\" data-trad data-trad-html>\n              <p>How did you go about finding the right stones?<\/p>\n            <\/h2>\n          \n                      <div class=\"wysiwyg mt-16 nj-color-link\" data-trad data-trad-html>\n              <p>We first had to track down the original stones and analyze their geological, geotechnical, and aesthetic characteristics. Then, we needed to identify quarries that could provide comparable matches. We visited numerous abandoned and active quarries around Paris in order to make a highly selective selection of the most beautiful natural stones to replace the originals.<\/p>\n            <\/div>\n          \n                  <\/div>\n      <\/div>\n\n    <\/div>\n  <\/div>\n\n<\/div>\n\n\n\n<div id=\"block_ad81e000fae99168390475f5a5ecf63c\" class=\"cp-wysiwyg teq-container nj-aura nj-aura--white\">\n    <div class=\"teq-grid !pt-0\">\n        <div class=\"col-span-6 xl:col-start-2 xl:col-span-10 lg:col-start-1 lg:col-span-12 \">\n                        <div class=\"teq-wysiwyg\">\n                <div data-trad data-trad-html><h2>What challenges did you face?<\/h2>\n<p>The biggest challenge of this exceptional project was the extremely tight timeline. Once we had selected the materials, we had to coordinate logistics and ensure that everything was done according to traditional craftsmanship. There were many risks involved: the stones needed to blend seamlessly into this monumental edifice while using medieval construction methods. It was a race against time, but also an extraordinary experience, with each expert giving their best to achieve a common goal: rebuild Notre Dame.<\/p>\n<\/div>\n            <\/div>\n                    <\/div>\n    <\/div>\n<\/div>\n\n\n\nNULL\n<div id=\"block_af8f8e5df19739cb537fe68f90985e6c\" class=\"cp-media-text teq-container relative nj-aura nj-aura--white \">\n  <div class=\"teq-grid relative\">\n        <div class=\"col-span-6 lg:col-span-12 relative   \">\n        <div class=\"teq-grid\">\n        <div class=\"col-span-6 lg:col-start-1 lg:col-span-6  order-1 lg:order-none mt-32 lg:mt-0\">\n          <div class=\"media-wrapper relative aspect-[528\/330] \">\n\n            \n                                          <picture>\n                <source media=\"(max-width: 767px)\"\n                  srcset=\"https:\/\/www.engie.com\/app\/uploads\/2026\/02\/notre-dame-3.jpg\" \/>\n                <source media=\"(min-width: 768px)\"\n                  srcset=\"https:\/\/www.engie.com\/app\/uploads\/2026\/02\/notre-dame-3.jpg\" \/>\n                <img decoding=\"async\"\n                  class=\"w-full object-fit-cover aspect-[528\/330]\"\n                  src=\"https:\/\/www.engie.com\/app\/uploads\/2026\/02\/notre-dame-3.jpg\"\n                  alt=\"\" \/>\n              <\/picture>\n            \n          <\/div>\n\n                    <div class=\"transcription hidden\" data-video=\"\" data-video-webm=\"\">\n                        <\/div>\n          <p class=\"nj-text--xs italic mt-8 \" data-trad>\n                      <\/p>\n\n            <!--\n                    -->\n        <\/div>\n\n        <div class=\"col-span-6 lg:col-span-4 lg:col-start-8 mt-32 lg:mt-0\">\n\n                      <h2 class=\"nj-heading--lg font-bold nj-color-link\" data-trad data-trad-html>\n              <p>What was this scientific and human experience like for you?<\/p>\n            <\/h2>\n          \n                      <div class=\"wysiwyg mt-16 nj-color-link\" data-trad data-trad-html>\n              <p>It was a once-in-a-lifetime experience, both scientifically and personally. Working on such an iconic project reinforced my belief that science\u2014and particularly geology\u2014should serve society and help preserve our common heritage. It also deepened my appreciation for interdisciplinary collaboration, for example with researchers in the humanities. This unique project has reshaped the way I approach my research.<\/p>\n            <\/div>\n          \n                  <\/div>\n      <\/div>\n\n    <\/div>\n  <\/div>\n\n<\/div>\n\n\n\n<div id=\"block_ae4cd0c17aceccf71144accdb3fd1db7\" class=\"cp-wysiwyg teq-container nj-aura nj-aura--white\">\n    <div class=\"teq-grid !pt-0\">\n        <div class=\"col-span-6 xl:col-start-2 xl:col-span-10 lg:col-start-1 lg:col-span-12 \">\n                        <div class=\"teq-wysiwyg\">\n                <div data-trad data-trad-html><h2>As a safety engineer, what was your perspective on this extraordinary construction site?<\/h2>\n<p>This experience took place on an exceptional worksite, with multiple contractors working simultaneously, leading to overlapping tasks and major risks, including working at heights, handling heavy loads, lifting operations, etc. The site was also contaminated with lead, requiring strict protective measures to ensure the health and safety of workers. Managing such complex risks on such a massive project provided invaluable lessons that I now share with my colleagues at CRIGEN.<\/p>\n<h3>*Further reading: Jean-Pierre\u2019s bibliography<\/h3>\n<ul>\n<li>BLARY F. et G\u00c9LY J.-P. (2020) \u2013 Pierres de construction. De la carri\u00e8re au b\u00e2timent. Collection \u00ab\u202fOrientations et m\u00e9thode \u00bb, n\u00b0 34, \u00c9d. CTHS, Paris.<\/li>\n<li>G\u00c9LY J.-P. (2012) \u2013\u202f\u00ab\u202fL\u2019approvisionnement en mat\u00e9riaux de construction des chantiers parisiens au Moyen-\u00c2ge\u202f\u00bb. Dans\u202f: La demeure m\u00e9di\u00e9vale \u00e0 Paris, \u00c9d. Somogy, Archives nationales, Paris.G\u00c9LY J.-P. (2021) \u2013 \u00ab\u202fBuilding Stone Through the Centuries: The \u201cParis Stone\u201d versus the \u201cOise Stone\u201d (France)\u202f\u00bb. Dans Carved in Stone &#8211; The archaeology of roc-cut sites in stone quarries, BAR Pub. \u00c9d., Oxford.<\/li>\n<li>G\u00c9LY J.-P. et LEROUX L. (2019) \u2013 \u00ab Les pierres d\u2019appareil du Lut\u00e9tien du bassin de Paris : une ressource complexe et diverse \u00bb, Bulletin d\u2019Information des G\u00e9ologues du Bassin de Paris, volume 56-4.<\/li>\n<li>\u202fLEROUX L. et G\u00c9LY J.-P. (2024) \u2013 \u00ab\u202fLes pierres des vo\u00fbtes de Notre-Dame, du Moyen \u00c2ge au XIXe si\u00e8cle. Identification, usages, approvisionnement\u202f\u00bb. Bulletin monumental, volume 182-4.<\/li>\n<\/ul>\n<\/div>\n            <\/div>\n                    <\/div>\n    <\/div>\n<\/div>\n\n\n\n<div id=\"block_5ff84c7c31bcb44f1c500c83815755da\" class=\"cp-ai-questions teq-container nj-aura nj-aura--white relative\">\n        <div class=\"teq-grid top\">\n            <div class=\"col-span-12\">\n                <div class=\"flex justify-center mb-16 eva\">\n                    <svg width=\"55\" height=\"24\" viewBox=\"0 0 55 24\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n    <path\n        d=\"M40.8014 17.1059L38.5783 11.0303C38.4688 10.7608 38.3551 10.4408 38.2372 10.0703C38.1194 9.6998 38.0015 9.29981 37.8836 8.87035C37.7741 9.29981 37.6604 9.70401 37.5425 10.083C37.4246 10.4535 37.3109 10.7777 37.2015 11.0556L34.991 17.1059H40.8014ZM46.8012 24.0026H44.1739C43.8792 24.0026 43.6392 23.931 43.454 23.7879C43.2687 23.6363 43.1298 23.4511 43.0371 23.2321L41.6729 19.5059H34.1068L32.7426 23.2321C32.6753 23.4258 32.5447 23.6026 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   class=\"flex w-full lg:w-fit border border-solid border-moderate px-[16px] py-[12px] nj-text--sm nj-color--primary no-underline eva-link justify-center text-center hover:bg-[rgba(0,40,70,0.1)] transition-colors duration-200\" data-trad>\n    What is the purpose of ENGIE?<\/a>                <\/div>\n            <\/div>\n            <div class=\"col-span-12 flex justify-center place-items-center gap-4 mt-24 lg:mt-48\">\n                    <button data-eva=\"true\" type=\"button\" data-ask=\"true\" aria-haspopup=\"dialog\" class=\"nj-btn eva-btn nj-btn--lg w-full lg:w-auto\">\n    <span aria-hidden=\"true\" class=\"material-icons nj-icon-material nj-icon-material--inverse nj-btn--lg nj-icon-material--eva icon-white\">eva<\/span>\n    <span data-trad>Discover EVA<\/span>\n<\/button>            <\/div>\n        <\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>You can be both a safety engineer at ENGIE Lab Crigen and a geoarchaeology expert\u2014that\u2019s the case for Jean-Pierre, who contributed to the reconstruction of the iconic cathedral. Too good of an opportunity to not share his unique experience! <\/p>\n","protected":false},"author":2,"featured_media":0,"parent":9924,"menu_order":31,"comment_status":"open","ping_status":"open","template":"","meta":{"_acf_changed":false,"footnotes":""},"tags":[98],"formats":[91],"class_list":["post-10041","page","type-page","status-publish","hentry","tag-corporate"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>A Safety Engineer&#039;s Role in Notre-Dame Restoration - ENGIE<\/title>\n<meta name=\"description\" content=\"Discover Jean-Pierre&#039;s unique journey as a safety engineer at ENGIE, contributing to the reconstruction of Notre-Dame de Paris after the 2019 fire.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.engie.com\/en\/explore\/explainer\/a-safety-engineer-at-the-bedside-of-notre-dame-de-paris\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A Safety Engineer&#039;s Role in Notre-Dame Restoration - 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