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q corrosion assessment for mvc evaporator systemtypical evaporator systems in sagd plants operate under extremely severe corrosive conditions due to
q design an evaporator systemthe evaporator system is designed to produce high quality distillate the feed water to the evaporator system is dosed
q corrosion in boilerwith proper bfw treatment and maintaining ph within a certain range 92 to 94 and removing oxygen from the system a stable
q corrosion in steam condensate systemcarbon dioxide and oxygen either acting alone or in combination account for the majority of steel corrosion
q show corrosion of bfw pumpbfw pumps are in high-pressure high-temperature service and may be subject to cavitation and erosion-corrosion also
q process of corrosion in bfw tankthe feed to the bfw tank is hot and will be flashing when it enters the tank the vapours will be corrosive when the
qwhat is erosion-corrosion in steam servicedepending on the steam quality let-down valves are subject to erosion-corrosion when pressure drop exceeds
q process of steam generation unitbfw from water treatment area is sent to the bfw booster pumps at temperature around 105degc the bfw is then heated
the de-oiled water from de-oiling unit enters the hls vessel for softening the primary function of hls is to remove the ca and mg hardness and bring
bulligf vesselsh cs 16 mm ca internal coatingeductor 304l ss or alternatively 12crbullorf vesselsh cs 16mm ca internal coatingmixer 316l
q explain about water de-oiling processthe de-oiling process consists of three major components the surge and skim tank which reduces pw oil content
q corrosion control in oil-treating equipmentbitumen provides adequate internal protection for inlet slug catcher fwko and treater due to high
q cscc in gas streamsdue to process upset of fwko or treater there may be chance of chloride carry over into the gas lines depending on the chloride
there is risk of wet h2s corrosion in all emulsion and gas lines from the inlet separator up to and including the treater full compliance to nace is
q erosion-corrosion in sand slurry lineall sands are collected in the inlet slug catcher and routed to the desand tank for separation sand slurry
q show the corrosion mechanismsthe following corrosion mechanisms are likely to happen in the oil treating unit under deposit corrosion and micsince
q handling suspect materialbullmaterial or items at a suppliers facility or those received or stored in the warehouse or other construction site
q explain about nonconforming materialif pmi test results indicate that the material or item does not meet the specified composition of the alloy the
the suppliersubcontractor shall submit for acceptance their material traceability and pmi program and procedures which shall comply with this
q process of alloy materials samplingthe following alloy-materials require a minimum of 10 per lot representative pmi sampling if any incorrect
q show pmi testing of alloy materialssuppliers and construction subcontractors are required to verify or conduct pmi testing of alloy materials that
q show construction subcontractor responsibilitiesthe supplier or construction subcontractor is responsible forbullemploying qualified pmi
at site locations the worleyparsons qc specialist qcs is responsible to verify that the requirements for pmi as specified in the purchase
q define pressure- retaining componentscomponents acting as pressure envelope or boundary breach of this envelope or boundary would lead to loss of
q positive material identification testingany physical evaluation or a test of a material to confirm that the material which has been or will be