{"id":65333,"date":"2019-09-18T13:08:59","date_gmt":"2019-09-18T17:08:59","guid":{"rendered":"https:\/\/www.mdaturbines.com\/?p=65333"},"modified":"2022-08-08T09:42:00","modified_gmt":"2022-08-08T13:42:00","slug":"compressor-blade-replacement","status":"publish","type":"post","link":"https:\/\/www.mdaturbines.com\/es\/resources\/compressor-blade-replacement\/","title":{"rendered":"Tackling Emerging Issues with 7FA Compressor Blade &#038; Vane Replacement"},"content":{"rendered":"<p>Mechanical Dynamics &amp; Analysis (MD&amp;A) completed compressor blade replacement work on two <a href=\"https:\/\/www.mdaturbines.com\/parts\/gas-turbine\/frame-7fa-parts-solutions\/\">7FA units<\/a>, including <a href=\"https:\/\/www.mdaturbines.com\/services\/gas-turbine\/turnkey-inspections\/\">full inspections<\/a>, and ongoing <a href=\"https:\/\/www.mdaturbines.com\/services\/gas-turbine\/technical-direction\/\">operational recommendations<\/a>. We were responsive to emerging issues, scope change and flexible in supporting the customer\u2019s needs.<\/p>\n<p>MD&amp;A was mobilized to address suspected fuel nozzle leaks on the customer\u2019s unit 1 gas turbine. The unit had been shut down to replace the reported fuel nozzle-to-forward can gaskets on three combustion chambers. Our experts also inspected the combustion liners, transition pieces, and stage one nozzle in these locations.<\/p>\n<p>While at the site, during a borescope inspection of unit 3, the customer discovered that one forward compressor R0 blade had migrated forward and was in contact with the rub ring. The customer then requested the site team to immediately relocate to the unit 3 gas turbine to address the migrated R0 issue, temporarily pausing work on unit 1.<\/p>\n<p>MD&amp;A relocated to the unit 3 gas turbine to replace the migrated compressor R0 blade and inspect all other R0 blade stakes on the forward compressor wheel. The team removed the #10 blade, cleaned and inspected the wheel slot, and re-staked a new R0 blade into position. As the unit was inspected, MD&amp;A experts noted inadequate stakes in wheel position #7 and the blade was re-staked in place.\u00a0 Inspections were then performed on the bellmouth casing, forward cone, inlet guide vanes, the plenum assembly, expansion joints, vertical floor bolts, piping flanges\/fittings, and the wheel balance weight stakes. The unit was released on schedule following an off-line water wash.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-65336 size-medium\" title=\"compressor blade replacement\" src=\"https:\/\/www.mdaturbines.com\/wp-content\/uploads\/2019\/09\/1_WP-300x200.png\" alt=\"compressor blade replacement\" width=\"300\" height=\"200\" srcset=\"https:\/\/www.mdaturbines.com\/wp-content\/uploads\/2019\/09\/1_WP-300x200.png 300w, https:\/\/www.mdaturbines.com\/wp-content\/uploads\/2019\/09\/1_WP-240x160.png 240w, https:\/\/www.mdaturbines.com\/wp-content\/uploads\/2019\/09\/1_WP-90x60.png 90w, https:\/\/www.mdaturbines.com\/wp-content\/uploads\/2019\/09\/1_WP.png 660w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>After subsequent review of the borescope report for the unit 1 gas turbine, the customer requested the MD&amp;A site team to then redeploy back to the unit 1 gas turbine to address issues with the <a href=\"https:\/\/www.mdaturbines.com\/parts\/gas-turbine\/compressor-parts\/\">aft compressor S17 segmented stator Vanes<\/a>. The inspection revealed migration and moderate damage to the aft compressor S17 segments, therefore, indicating the need for an aft compressor S17 segment replacement.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-65337 size-medium\" title=\"compressor blade replacement\" src=\"https:\/\/www.mdaturbines.com\/wp-content\/uploads\/2019\/09\/2_WP-300x200.png\" alt=\"compressor blade replacement\" width=\"300\" height=\"200\" srcset=\"https:\/\/www.mdaturbines.com\/wp-content\/uploads\/2019\/09\/2_WP-300x200.png 300w, https:\/\/www.mdaturbines.com\/wp-content\/uploads\/2019\/09\/2_WP-240x160.png 240w, https:\/\/www.mdaturbines.com\/wp-content\/uploads\/2019\/09\/2_WP-90x60.png 90w, https:\/\/www.mdaturbines.com\/wp-content\/uploads\/2019\/09\/2_WP.png 660w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>The entire <a href=\"https:\/\/www.mdaturbines.com\/parts\/gas-turbine\/combustion-parts\/\">combustion system<\/a> was disassembled to allow for turbine shell and compressor discharge casing removal. Once the casings were removed, foreign object damage was identified on several exit guide vanes. Moderate fretting between the S17 shrouded compressor vane segments and the inner barrel was also noted. Fragments of the S17 V-seal had caused damage to the exit guide vanes and were also located in the cooling air side of the stage 1 nozzle.<\/p>\n<p>MD&amp;A removed the damaged S17 segmented stator vane and V-seal. The customer supplied the new S17 segmented stator vanes.<\/p>\n<p>The site team addressed inner barrel fretting damage and removed areas of high metal. In addition, the exit guide vanes with foreign object damage were precision blended and thoroughly NDE inspected.<\/p>\n<p>MD&amp;A also installed Spiral Wound Metal Gaskets and installed new aft compressor borescope plugs. Additionally, we inspected the customer\u2019s DLN 2.6 Combustion Forward Casings.<\/p>\n<p>The work scope was performed at the customer\u2019s direction, including any Technical Information Letters (TIL), if applicable.<\/p>\n<p>The unit was returned to service on schedule. As for longer-term professional guidance to the owner\/operator, several recommendations were advised in a full written report.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-65338 size-medium\" title=\"compressor blade replacement\" src=\"https:\/\/www.mdaturbines.com\/wp-content\/uploads\/2019\/09\/3_WP-300x200.png\" alt=\"\" width=\"300\" height=\"200\" srcset=\"https:\/\/www.mdaturbines.com\/wp-content\/uploads\/2019\/09\/3_WP-300x200.png 300w, https:\/\/www.mdaturbines.com\/wp-content\/uploads\/2019\/09\/3_WP-240x160.png 240w, https:\/\/www.mdaturbines.com\/wp-content\/uploads\/2019\/09\/3_WP-90x60.png 90w, https:\/\/www.mdaturbines.com\/wp-content\/uploads\/2019\/09\/3_WP.png 660w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>MD&amp;A\u2019s specialized services range from <a href=\"https:\/\/www.mdaturbines.com\/services\/gas-turbine\/turnkey-inspections\/\">Combustion, Hot Gas Path, and Major Inspections<\/a> to <a href=\"https:\/\/www.mdaturbines.com\/repairs\/gas-turbine\/rotor-repair\/\">Compressor and Turbine Rotor Repairs<\/a> to <a href=\"https:\/\/www.mdaturbines.com\/services\/gas-turbine\/rotor-life-extension\/\">Rotor Life Extension\/ Assessment<\/a>.\u00a0MD&amp;A offers a complete suite of <a href=\"https:\/\/www.mdaturbines.com\/parts\/gas-turbine\/\">parts<\/a>, <a href=\"https:\/\/www.mdaturbines.com\/repairs\/gas-turbine\">repairs<\/a>, and<a href=\"https:\/\/www.mdaturbines.com\/services\/gas-turbine\/\"> services<\/a> solutions for the Frame 7EA &amp; 7FA heavy-duty gas turbine fleet.<\/p>\n<p>Call our MD&amp;A Gas Turbine Services today at (518) 399-3616 or use our <a href=\"https:\/\/www.mdaturbines.com\/contact\/\">Contact form<\/a>.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-65339 size-medium\" title=\"compressor blade replacement\" src=\"https:\/\/www.mdaturbines.com\/wp-content\/uploads\/2019\/09\/4_WP.jpg-300x200.png\" alt=\"\" width=\"300\" height=\"200\" srcset=\"https:\/\/www.mdaturbines.com\/wp-content\/uploads\/2019\/09\/4_WP.jpg-300x200.png 300w, https:\/\/www.mdaturbines.com\/wp-content\/uploads\/2019\/09\/4_WP.jpg-240x160.png 240w, https:\/\/www.mdaturbines.com\/wp-content\/uploads\/2019\/09\/4_WP.jpg-90x60.png 90w, https:\/\/www.mdaturbines.com\/wp-content\/uploads\/2019\/09\/4_WP.jpg.png 660w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mechanical Dynamics &amp; Analysis (MD&amp;A) completed compressor blade replacement work on two 7FA units, including full inspections, and ongoing operational recommendations. We were responsive to&#8230;<\/p>\n","protected":false},"author":2,"featured_media":65338,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","footnotes":""},"categories":[208,211],"tags":[67,219,221,137,222],"class_list":["post-65333","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gas-turbine","category-parts","tag-7fa","tag-compressor","tag-compressor-blade-replacement","tag-nozzles","tag-vane"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>7FA Compressor Blade and Vane Replacement &#8211; MDA Turbines<\/title>\n<meta name=\"description\" content=\"MD&amp;A completed compressor blade replacement work on two 7FA units, including full inspections, and ongoing operational recommendations.\" \/>\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.mdaturbines.com\/es\/resources\/compressor-blade-replacement\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"7FA Compressor Blade and Vane Replacement &#8211; 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