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the contractor shall perform all work with the highest quality workmanship throughout to provide a neat uniform appearance with no sharp edges
q tank insulation processwith owners approval spray urethane foam may be used manufacturers recommendations for service temperature limit shall be
q what is metal jacketinga metal jacketing shall be alcan t-3000-h14 series t-1100-h14 or approved equivalent stucco embossed aluminum with a factory
q material selection for insulation in personnel protectionmaterial for 15ordmc to 650ordmc temp range is calcium silicate astm c533 type 1 manville
q material selection for insulationmaterial for 15ordmc to 650ordmc temp range is calcium silicate manville thermo-12 or approved equivalentmaterial
q materials used in insulationall materials must be non-corrosive compatible with other materials and used in accordance with the manufacturers
q steam hot service insluation thicknessessteam hot service insluation thicknesses are specified based on the following design criteria average
q hot service insluation thicknesseshot service insluation thicknesses are specified based on the following design criteriabullaverage annual
q describe the insulation thicknessinsulation thickness shall be selected in accordance with the following tables forming part of this
q heavy traffic areas in pumpsthese are areas around pumps filters control valves psvs and other equipment requiring frequent maintenance or
q insulation for personnel protectioninsulation for personnel protection shall be provided as follows on all piping and equipment adjacent to work
q determine the need for insulationequipment and piping shall be insulated as required for heat conservation process heat control and personnel
q use of high temperature material flare tipsa variety of high temperature alloys typically stainless steels andor nickel-base alloys are employed in
q what is expansion jointsexpansion joints are used to accommodate thermal growth in piping and pressure vessel applications the metal bellows an
q use of high temperature material in superheaterstypically superheaters and reheaters provide service lives of approximately 15 years ie half the
q high temperature materials in boilersa thin refractory layer between the shield and boiler tube is recommended in areas subject to moderate
q use of high temperature materials in furnacesoften furnace tubing and refractory protected membrane walls are fabricated from plain carbon steel
q applications of high temperature materialsa brief description of materials of construction used for common high temperature components in furnaces
q why we use nickel alloys in weldingnickel weld metals have high creep-rupture strength but often have lower stress-rupture ductility and lower
q use of stainless steels in weldingconsiderable care must be exercised to obtain sound crack-free welds these difficulties are pronounced when
q carbon and low alloy steels for weldingall welding of pressure retaining equipment must be completed as per the respective code typically ansiasme
cobalt-base super alloys eg uns r30155 grade 661 and r30816 grade 671 have superior strength to the nickel base alloys above 1800degf 980degcthe
q show general properties of castings1 fe-cr 10-30cr alloys offer good resistance to oxidation low strength at elevated temps restricted to use in
q material selection by temperature range 750deg to 1100degf 400deg to 600degc plain carbon steels are usually limited to a maximum operating
q describe polythionic acid corrosionalthough it is not typically thought of as high temperature corrosion polythionic acid stress corrosion cracking