Tag: NON DBDS

Removal of PCBs and non-DBDS corrosive sulfur (C2) France 2013

Scenario Nameplate data of transformer: Transformer: grid transformer Manufact: xxx Year: 1957 Power [MVA]: 50 Voltage [KV]: 225 Oil Mass [Kg]: 38.000 Oil type: blended mineral oil Transformer contaminated by PCBs and corrosive sulfur compounds Solution Selective depolarization treatment (Chedcos) in order to remove corrosive sulfur compounds and dehalogenation treatment (CDP Process®) in order to remove the PCBs from oil and transformer. The treatment was performerd on-site
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Removal of PCBs and non-DBDS corrosive sulfur (C2) France 2012

Scenario Hydro power plant with 3 GSU transformers Nameplate data of the transformer: Manufact: xxx Year: 1965 Power [MVA]: 80 Voltage [KV]: 220 Oil mass [Kg]: 35.000 Oil type: naphthenic blended Solution Selective deplarization treatment (Chedcos) in order to remove the corrosive sulfur compounds and dehalogenation treatments (CDP Process®) in order to remove the PCBs from the oil and the transformers. the tratments were performed
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Removal of PCBs and non-DBDS corrosive sulfur (C2) France 2010

Scenario Steel Factory: 8 Equipment Nameplate data of the transformers: Namufact: xxx Year: 1973 Power [MVA]: 85 Voltage [KV]: 63 Oil mass [Kg]: 18.150 Oil type: naphthenic blended Oil Fingerprint. It shows the presence of sulfur compounds responsible for oil corrosivity Solution Selective depolarization treatment (Chedcos) in order to remove the corrosive sulfur compounds and dehalogenation treatments (CDP Process®) in order to remove the PCBs from the oils
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Francia 2012 Rimozione zolfo corrosivo senza DBDS (C2)

Scenario Il classico trattamento con terre follari si dimostra totalmente inefficace contro lo zolfo corrosivo Caratteristiche tecniche del trasformatore: Costruttore: xxx Anno: 1969 Potenza [MVA]: 14 Tensione [KV]: 63 Massa olio [Kg]: 4.200 Tipo di olio: Esso Univol 54 Oil Fingerprint. Presence of sulfur compounds without DBDS Il trattamento con terre follari (NON da Sea Marconi) non ha prodotto alcun risultato
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Removal of non-DBDS corrosive sulfur C2 Italy 2011

Scenario Thermal power plant with 8 GSU transformers Nameplate data of the transformer: Manufact: xxx Power [MVA]: 370 Voltage [KV]: 400 Oil mass [Kg]: 58.000 Oil type: blended oil The analysis and diagnosis of the 2011 showed: Total sulfur = 5700 mg/Kg TCS (Total Corrosive Sulfur) = 104 mg/Kg (DBDS eq.) CCD Test = corrosive DBTP (dibenzothiophene) = 42 mg/Kg Step 2
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Removal of non-DBDS corrosive sulfur (C2) Midlle East 2009

Scenario Thermal power plant with 8 GSU transformers Nameplate data of the transformers: Power [MVA]: 175 Voltage [KV]: 400 Oil type: naphthenic oil C2 – Corrosion not caused by DBDS Step 1 The diagnosis in the 2009 showed: Total sulfur = 200 mg/Kg TCS (Total Corrosive Sulfur) = 157 mg/Kg (DBDS eq.) CCD Test = corrosive IFT = 19 mN/m DBTP
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