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Provides typical noise sound power levels versus frequency and specifies applicable codes/standards for structures, stack design, seismic, welding, fasteners, and measurement of airborne noise. Also details general ducting requirements, silencer attenuation, trail assembly, and insulation limiting skin temperature to 60°C at 45°C ambient.",{"@graph":14,"@context":72},[15,34,55],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/technology/","Technology",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/gas-turbine-exhaust-ducting-and-bypass-system-10-scope-specification/663220/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/gas-turbine-exhaust-ducting-and-bypass-system-10-scope-specification/663220.png","ImageObject",300,407,{"name":42,"@type":43},"Blitz","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-10-30","2026-10-28",true,{"@type":52,"interactionType":53,"userInteractionCount":26},"InteractionCounter",{"@type":54},"ViewAction",{"@type":56,"mainEntity":57},"FAQPage",[58,64,68],{"name":59,"@type":60,"acceptedAnswer":61},"What does the specification cover for the gas turbine exhaust system?","Question",{"text":62,"@type":63},"It covers design, manufacturing, and supply of exhaust ducting including exhaust plenum covers and exhaust stack silencer, along with insulation and outside corrugated sheet arrangements referenced to GA drawings and the variant table.","Answer",{"name":65,"@type":60,"acceptedAnswer":66},"What design life and environmental assumptions are specified?",{"text":67,"@type":63},"The design life is 20 years or higher, and the humidity input parameter is 0–100% RH. Transient starting loads and load cycles (10,000) are also considered, with start-up time defined from 25°C to maximum temperature within 8 minutes.",{"name":69,"@type":60,"acceptedAnswer":70},"How are noise requirements expressed in the document?",{"text":71,"@type":63},"Noise is provided as typical sound power levels at the exhaust plenum flange for various gas turbines under base load conditions, and values in the exit (row D) are expected sound power levels at the silencer exit to be guaranteed by the vendor.","https://schema.org",{"og:url":32,"og:type":74,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":76,"canonical":32},"index,follow",{"doc_id":78,"site_id":7},663220,1793225852,{"code":4,"msg":81,"data":82},"success",[83,87,91,95,100,104,109,114,119,122,126],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":84,"show_sort_weight":85,"slug":86},"Story & 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| --- | --- | --- | --- | --- | --- | --- |\n|  |  |  |  |  |  | REV.NO.02   |  |\n|  |  |  |  |  |  | PAGE 01 OF 36   |  |\n| The information on this document is the property of BHARATHEAVY ELACTRICALSLIMITED.it must be  \u003Cbr>COPYRIGHT AND cONFIDENTIAL  \u003Cbr>used directly it any way detrimental to the intarest of the company   |  |  | GAS TURBINE EXHAUST DUCTING AND BYPASS SYSTEM  \u003Cbr>1.0 Scope:  \u003Cbr>This specification covers design Manufacturing and supply of Gas  \u003Cbr>Tubing exhaust ducting arrangement which includes exhaust plenum  \u003Cbr>covers and exhaust stack silencer.Insulation and outside corrugated  \u003Cbr>sheet etc.As per GA drawing Mentioned in variant table.  \u003Cbr>2.0 Technical Requirements:  \u003Cbr>2.1 Input Parameters:Ref var table  \u003Cbr>2.2 Design Loads:  \u003Cbr>Humidity  \u003Cbr>:0-100%RH  \u003Cbr>Design life  \u003Cbr>:20 years or higher  \u003Cbr>Transient loads due to starting shall be considered  \u003Cbr>No.of load cycles:10,000  \u003Cbr>Time for start up:25℃ to max temp in 8 min  \u003Cbr>2.3 Noise Levels:  \u003Cbr>1000200040008000  \u003Cbr>Frequency(HZ)  \u003Cbr>31.563  \u003Cbr>500  \u003Cbr>250  \u003Cbr>125  \u003Cbr>(A)  Fr1  \u003Cbr>1021  \u003Cbr>106  101  100  \u003Cbr>102  \u003Cbr>110  \u003Cbr>107  \u003Cbr>109  \u003Cbr>113  \u003Cbr>(B)  Fr3,Fr5,Fr6  \u003Cbr>127  \u003Cbr>130  \u003Cbr>130  \u003Cbr>129  \u003Cbr>128  \u003Cbr>129  \u003Cbr>122  117  128  \u003Cbr>(C)  Fr9  \u003Cbr>142  \u003Cbr>144  \u003Cbr>145  \u003Cbr>124  \u003Cbr>1391  \u003Cbr>143  \u003Cbr>136  130  \u003Cbr>140  \u003Cbr>102  98    94  \u003Cbr>(D)  Exit  \u003Cbr>108  \u003Cbr>115  \u003Cbr>120  \u003Cbr>119  \u003Cbr>127  124  \u003Cbr>The values given in above table are typical sound power levels  \u003Cbr>generated by gas turbine under base load conditions at exhaust  \u003Cbr>plenum flange to exhaust system for various gas turbines in DB  \u003Cbr>The values in row(D)are expected sound power levels at exit of  \u003Cbr>exhaust silencer which are to be guaranteed by vendor.   |  |  |  |  |\n| Ref   |  |  | Revisions:  \u003Cbr>Refer to record of revisions:   |  | Prepared.  \u003Cbr>B~  \u003Cbr>(BSND   | Approved.  \u003Cbr>【BIB)   | Date:  \u003Cbr>08-09-05   |\n\n\n| Rev,NO,6  \u003Cbr>TO 106-1   |  | Form No.   | BfI   | PRODUCT STANDARD  \u003Cbr>HYDERABAD   | GT54313   |\n| --- | --- | --- | --- | --- | --- |\n|  |  |  |  |  | REV.NO.02   |\n|  |  |  |  |  | PAGE 02 OF 36   |\n| The nformation on this document Iis the property of BHARATHEAVY ELACTRICALS 7IMITED. it must be  \u003Cbr>COPYRIGHT AND cONFIDENTIAL  \u003Cbr>used directly it any way detrimental to the intarest of the company   |  |  | For the above table Ref.Sound power level is 1.0×EX-12 watts.  \u003Cbr>2.4 Nature of Exhaust Gas:  \u003Cbr>The exhaust of gas turbine carries products of combustion of burning  \u003Cbr>of fuels like diesel.  Natural Gas,Naphtha,Crude oil,HSD,etc with  \u003Cbr>contaminants like Sulphur and other corrosive elements in them.  \u003Cbr>2.5 Applicable codes /standards:  \u003Cbr>Following codes/standards shall be applicable if not other wise given  \u003Cbr>in var table.  \u003Cbr>Cleaning before painting(steel structures painting council)  \u003Cbr>SSPC-SP6  \u003Cbr>For structure steel  \u003Cbr>IS 800  \u003Cbr>For wind loads  \u003Cbr>IS 875  \u003Cbr>For stack design  \u003Cbr>IS 6533  \u003Cbr>For seismic loading  \u003Cbr>IS 1893  \u003Cbr>Weld able steel  \u003Cbr>IS 2062  \u003Cbr>Chequered plates  \u003Cbr>IS 3502  \u003Cbr>Method of measurement of airborne noise for GT  \u003Cbr>IS 10534  \u003Cbr>Protection against lightning  \u003Cbr>IS 2309  \u003Cbr>A193/193M as/ss fasteners for high temp service.  \u003Cbr>ASTM  \u003Cbr>A453/453M bolt material  \u003Cbr>ASTM  \u003Cbr>A194 nuts  \u003Cbr>ASTM  \u003Cbr>Section IX for welding  \u003Cbr>ASTM  \u003Cbr>Section VIII div I for boilers &Unfired pressure vessels  \u003Cbr>ASTM  \u003Cbr>A105 forged pipe fittings  \u003Cbr>ASTM  \u003Cbr>A53 galvanized pipe ach 80 screwed  \u003Cbr>ASTM  \u003Cbr>A176 TP 409 for SS sheet (Lining)  \u003Cbr>ASTM   |  |  |\n| Re   | 354A2707   |  |  |  |  |\n\nf  \n\n| Rev, NO,6  \u003Cbr>TO.106-1   |  | Form No.   | BH   | PRODUCT STANDARD  \u003Cbr>HYDERABAD   | GT54313   |\n| --- | --- | --- | --- | --- | --- |\n|  |  |  |  |  | REV.NO.02   |\n|  |  |  |  |  | PAGE 03 OF 36   |\n| The information on this documen is the property of BHARATH","cbCaio4iFWZ2B5Ir","https://ap.wps.com/l/cbCaio4iFWZ2B5Ir","pdf",4851430,61,"English","# 1.0 Scope\n## 2.0 Technical Requirements\n## 2.1 Input Parameters\n## 2.2 Design Loads\n## 2.3 Noise Levels\n## 2.4 Nature of Exhaust Gas\n## 2.5 Applicable Codes / Standards\n## 2.6 Material Standards for Critical Items\n## 3.0 General Requirements\n## 3.1 Ducting Requirements\n## 3.2 Exhaust Silencer\n## 3.3 Trail Assembly\n## 3.4 Insulation","[{\"question\":\"What does the specification cover for the gas turbine exhaust system?\",\"answer\":\"It covers design, manufacturing, and supply of exhaust ducting including exhaust plenum covers and exhaust stack silencer, along with insulation and outside corrugated sheet arrangements referenced to GA drawings and the variant table.\"},{\"question\":\"What design life and environmental assumptions are specified?\",\"answer\":\"The design life is 20 years or higher, and the humidity input parameter is 0–100% RH. Transient starting loads and load cycles (10,000) are also considered, with start-up time defined from 25°C to maximum temperature within 8 minutes.\"},{\"question\":\"How are noise requirements expressed in the document?\",\"answer\":\"Noise is provided as typical sound power levels at the exhaust plenum flange for various gas turbines under base load conditions, and values in the exit (row D) are expected sound power levels at the silencer exit to be guaranteed by the vendor.\"}]","GAS TURBINE EXHAUST DUCTING AND BYPASS SYSTEM - 1.0 Scope - Specification | PDF",154]