Superior client serv ice. Electrical confidence. CARGILL LIMITED Transformer Oil Sampling and Analysis. June 7, 2016 File: C

Transcription

1 Superior client serv ice. Electrical confidence. CARGILL LIMITED 6 Transformer Oil Sampling and Analysis June 7, 6 File: C- Project Manager: George Shehata, P.Eng. info@magnaiv.com Engineering & Technical Field Services Canada United States Chile

2 Superior client service. Electrical confidence. Parsons Road SW Edmonton, AB T6X X p f tf File: C- June 8, 6 CARGILL LIMITED 8 LOW LEVEL ROAD NORTH VANCOUVER, BC V7L A7 Attention: Dear Sir: Mr. Ron Ludwig Supervisor, Electrical Via: fax mail Re: Oil Sampling and Analysis North Vancouver Facility We are pleased to submit the insulating fluid report and test sheets for the three () transformers and one () OCB located at the North Vancouver facility. The transformer sampling was performed by James Powell on June 7, 6 in accordance with ASTM D9 and D6 standards. The laboratory testing was completed by The Chemlab of Calgary. Review of results and analysis was provided by the undersigned. Based on the analysis of the laboratory results, all equipment is in good condition and suitable for continued service. Once again, both the East and West transformers are showing elevated Ethylene indicating higher temperature internal heating however, since there has been no significant generation and all other dissolved gases and standard fluid quality tests are within IEEE acceptable limits for in-service equipment, the units are of no immediate concern. Annual sampling is highly recommended to monitor any further generation. The Sub transformer is filled with Natural Ester (FR) it appears there is elevated Ethane however, the limits indicated are for mineral oil only. Natural ester generates Ethane under normal operation (test limit is 4PPM) therefore the current value is within acceptable limits. In addition, the interfacial tension appears low however, the test limit is 8 for Natural ester. As such all values meet the recommended test limits for natural ester. The OCB is showing all dissolved gases and tested fluid quality properties to be within acceptable limits. All equipment is classified as category Type. Equipment in this category shows acceptable test results, with some showing minor elevated gas levels. Close observation of dissolved gases in the oil, along with the fluid quality properties, provides the most valuable information about your equipment health. All units are recommended for annual resampling with electrical tests performed at year intervals. This testing schedule will allow us to maintain a comprehensive trend of all properties, and provide accurate analysis on the condition and operational reliability of your equipment. Please see Section. Summary of Results and Deficiencies for a complete breakdown. info@magnaiv.com Engineering & Technical Field Services Canada United States Chile

3 We trust this report meets with your approval and requirements. Should you need further information or assistance, please do not hesitate to contact us. Thank you for retaining the services of Magna IV Engineering. We look forward to being of service to you again in the future. Yours Truly, MAGNA IV ENGINEERING Stephanie Parsons Oil Analysis Project Manager Pa ge

4 INDEX.. SCOPE OF WORK..... SUMMARY OF TESTS SUMMARY OF RESULTS AND DEFICIENCIES TEST RESULTS Pa ge

5 .. SCOPE OF WORK As per Magna IV Engineering s standard practices for transformer oil sampling, our scope of work consisted of: Providing Transformer Inspection Recording Nameplate Data Reading and resetting Gauges Providing Inspection Report Procurement of oil samples in accordance with ASTM D9 & D6 - obtain one syringe for gas-in-oil analysis & moisture content - obtain bottle sample for fluid quality tests The Chemlab of Calgary performs all analytical tests, consisting of: Gas Analysis (DGA) D-6 Moisture Content D-B Interfacial Tension D-97 Acid Number D-974 Color Number D- Visual Examination D-4 Dielectric Breakdown mm The Chemlab is responsible for proper disposal of samples. Analysis of Laboratory results by Magna IV Engineering. Tools utilized: Duval Triangle GA Key Gas Method DGA Rogers Ratio Method DGA Cellulose DGA IEEE/ANSI Specific History and Trending (Generation vs. Time) Document, interpret and evaluate results, and recommend corrective or follow up action. Prepare traditional summary sheets and lifetime trending graphs. Prepare report detailing findings, recommendations and corrective action as required. Pa ge

6 .. SUMMARY OF TESTS For your reference and confirmation of the specific tests performed and their analytical value, we provide the following highlight information. All transformer tests were performed as per the latest ASTM standards. Specific tests performed include: ASTM D86 - Liquid Dielectric Test The dielectric breakdown voltage of an insulating liquid is important as a measure of the liquid s ability to withstand electric stress without failure. It serves to indicate the presence of contaminating agents, such as water, dirt, moisture, cellulosic fibers or conducting particles in the liquid, one or more of which may be present in significant concentrations when low dielectric breakdown values are found by test. However, a high dielectric breakdown voltage does not indicate that the concentrations of contaminants that are present in the liquid between the electrodes are not large enough to negatively affect the average breakdown voltage of the liquid when tested by this method. ASTM D97 - Interfacial Tension This method has been shown by practice to give a reliable indication of the presence of hydrophilic compounds. When certain contaminants such as soaps, paints varnishes and oxidation products are present in the oil, the film strength of the oil is weakened, thus requiring less force to rupture. For oils in service, a decreasing value indicates the accumulation of contaminants and oxidation products, which may attack the insulation and interfere with the cooling of transformer windings. ASTM D - Moisture Content The electrical characteristics of an insulating liquid are deleteriously affected by its water content. A high water content may make a dielectric liquid unsuitable for some applications because a deterioration in properties such as dielectric breakdown voltage may occur. This test is suitable for use in acceptance specifications, in control of processing and in evaluating the condition of dielectric liquids in service. ASTM D974 - Neutralization Number The acid number of an oil is a measure of the amount of acidic materials present. As oils age in service the acidity, and therefore the acid number, increases. A used oil having a high acid number indicates the oil is either oxidized or contaminated with materials such as varnish, paint or other foreign matter. This test serves as an indicator of the potential of the oil to form sludge. ASTM D Color Number The color of a new oil is generally accepted as an index of the degree of refinement. For oils in service, an increasing or high color number is an indication of contamination, deterioration or both. 6 Pa ge

7 ASTM D6 - Dissolved Gas Analysis Gas analysis is based upon the fact that both electrical insulating oil and cellulosic insulation break down under abnormal thermal or electrical stress. The results of these stresses are both volatile and non-volatile gases, known as fault gases. Gas analysis is the technique that identifies fault gases, relates their quantity, generation rate and relevant ratios to type and severity of fault. Typical fault gases analyzed are: Hydrogen Methane Ethane Ethylene Acetylene Carbon Monoxide Carbon Dioxide H CH4 CH6 CH4 CH CO CO Typical types of transformer problems that can be detected are: thermal degradation - low temperature - high temperature (hot spot) arcing partial discharges degradation of paper insulation Increased frequency or periodic testing will significantly increase the value and accuracy of fault gas analysis. 7 Pa ge

8 .. SUMMARY OF RESULTS AND DEFICIENCIES Transformers typically can be broken down into the following categories: Type Type Type Type 4 Transformers in this category show acceptable test results, with a few transformers showing signs of minor non-serious overheating (re-test recommended in one year). Variations of Type transformers may exist pending past records and age of units. This category covers any transformer showing test results where some concern is evident (re-test recommended in six months). Transformers in this category show signs of serious fault gas concentrations or very poor chemical properties (prompt re-tests or further investigations are required). Mechanical deficiencies (corrective action to be taken as soon as possible or as recommended). Please refer to the test sheets ( pages) for a detailed breakdown of results and recommendations. Following is the Summary of Results and Deficiencies. Transformer Identification / Serial Number Year Manufactured Analysis Type Recommended Retest Comments East TX 969 West TX 968 Sub 94 6OCB Year 967 Year Year 967 Year Slight elevation in Ethylene higher temperature internal heating no immediate concern. All other dissolved gases and tested fluid properties within acceptable limits. Annual sampling highly recommended to monitor any further generation. Check loading conditions and cooling means. No major deficiencies noted. Slight elevation in Ethylene higher temperature internal heating no immediate concern. All other dissolved gases and tested fluid properties within acceptable limits. Annual sampling highly recommended to monitor any further generation. Check loading conditions and cooling means. No major deficiencies noted. All dissolved gases and standard fluid quality properties within acceptable limits for Natural Ester Insulating fluid. Annual sampling should be maintained. No major deficiencies noted. All dissolved gases and standard fluid quality properties within acceptable limits showing no significant change. Annual sampling should be maintained. No major deficiencies noted. 8 Pa ge

9 4.. TEST RESULTS Following is a copy of all individual test results. We recommend you review the results and graphs at your convenience to better understand our analysis and the condition of your equipment. Each piece of equipment consists of the following 4 pages of documentation: Page Transformer nameplate, identification name, oil and gas results and any notable comments and deficiencies. Pages & Graphs for all generated gases and chemical analysis tests. This provides a more visual idea of determining the trending of these gases. All limits are based upon standards widely accepted throughout the industry. Page 4 Inspection sheet, nameplate data, gauge recordings. 9 Pa ge

10 Cargill Terminal East - TX S/N: 969 Oil & Gas Results C-

11 Fluid Test Report Maintenance Serial Number: 969 kva Rating: 4 Cargill Limited Cargill Terminal Nameplate Information kv Rating: 7./.7 Apparatus Type: TRN Manufacturer: WESTINGHOUSE Designation: Fluid Type: Year Manufactured: 967 Fluid Capacity (G): 7 East - TX OIL Sample Date: Job Number: Jun-7-6 C- Jun-- C-7 Dissolved Gas Analysis D6-C Limits Expressed in PPM Hydrogen (H₂) 4 Methane (CH₄) Ethane (C₂H₆) 6... Ethylene (C₂H₄) Acetylene (C₂H₂)... Carbon Monoxide (CO) Carbon Dioxide (CO₂) 78 7 Oxygen (O₂) 9 7 Nitrogen (N₂) Total Dissolved Combustible Gas 8 6 Total Gas Content (%)..66 Fluid Quality Analysis Limits Voltage Class >69kV - <kv Moisture Content D (ppm) 6 7 Interfacial Tension D97 (mn/m)..8.4 Acid Number D974 (mg KOH/g)..8. Color Number D (Relative). L.. Visual Examination D4 (Relative) CLEAR CLEAR CLEAR Dielectric mm D86 (kv) 8 4 Dielectric Breakdown D877 (kv) 6 Power C D94 (%). Power C D94 (%). Additional Fluid Quality Tests PCB D49 (ppm) Specific Gravity D4 (Relative) Oxidation Inhibitor D668 (%) Notes: Limits Magna IV Engineering Serial Number: 969 Page of

12 Fluid Test Report Maintenance Cargill Limited Cargill Terminal Historic Graphs and Diagnostic Charts Total Gas Content (%) (All Gases) Key Gas Comparison (ppm) CO - H - Meth - Eth - Ethy - Ace Combustible Gases.... Methane (CH4).... Ethane (CH6) Ethylene (CH4) Acetylene (CH) 6 4 Hydrogen (H) Carbon Monoxide (CO) Non-Combustible Gases Carbon Dioxide (CO) Thousands Nitrogen (N) Thousands Oxygen (O) Magna IV Engineering Serial Number: 969 Page of

13 Fluid Test Report Maintenance Cargill Limited Cargill Terminal Fluid Analysis Moisture Content (Should be <Limit) Interfacial Tension (Should be >Limit).6.4 Acid Number (Should <Limit) mn/m mg KOH/g Color Number (Should be <Limit) Dielectric Breakdown D877 (Should be >Limit) kv 4 4 Dielectric Breakdown D86 (Should be >Limit) Actual Values Acceptable Limits Magna IV Engineering Serial Number: 969 Page of

14 PREPARED FOR CARGILL DESCRIPTION YES NO DESCRIPTION OK FAIL COMMENTS BREATHERS HV BUSHINGS ACCESSIBLE HV BUSHING CONDITION LV BUSHINGS ACCESSIBLE RADIATORS INSTALLED CONSERVATOR TANK GROUNDING ( LOCATIONS) PHYSICAL DAMAGE NITROGEN ADDED RELIEF VALVE INSTALLED OIL FILLED EQUIPMENT INSPECTION SHEET WO# C- TAG # EAST TX DATE June 7, 6 SITE CARGILL TERMINAL TEST BY JMP AREA MAIN SUB STANDARD MAINTENANCE APPROVED BY TYPE ONAN SEC VOLTS 7 %IMPED SO# 969 AMPS WEIGHT YEAR 967 CAPACITY LTRS 7 GALS TEMP RISE OIL TYPE MINERAL SYSTEM BREATHING DATE OF LAST OIL CHANGE (IF KNOWN) CRITERIA YES NO CRITERIA ADEQUATE CLEARANCE TANK PRESSURE (Min:- Psi (-6.89 kpa)) SILICA DESICANT CONDITION PCB CONTAMINATED LOW OIL LEVEL (GAUGE@ LOW) LV BUSHING CONDITION RADIATOR CONDITION OIL LEAKS (WHERE) DIRT ACCUMULATION NAMEPLATE DATA PRE-SAMPLING CHECKLIST INSPECTIONS UNKNOWN YES NO.7% COMMENTS.7 PPM PROPER LEVEL BLUE DUSTY DUSTY N/A OK CORROSION / RUST ACCUMULATION PAINT IS GOOD CANF-E6 EQUIPMENT TX KVA 4 # OF TAPS MANUF. WESTINGHOUSE PRI VOLTS 7KV TAP FOUND/LEFT / DUSTY GAUGE READING DRAGHAND OIL TEMP WINDING TEMP STRAW WHITE STRAW YELLOW LEMON YELLOW Sampler: PSI PO# for Sampling Lab: REPORT RUSH: DGA D6C Dielectric.mm D86 Oxidation Inhibitor D668 NOTES: Moisture in Oil DB Dielectric.mm D86 Furfurals (paper degradation). NO WINDING TEMP GAUGE Interfacial Tension D97 Power Factor C D94 Metals D6ICP TRANSFORMER IS IN A VAULT Acid Number D974 Power Factor C D94 Viscosity D88 Color/Visual D, D4 Specific Gravity D98 Other: Dielectric.mm D877 4 C N/A JMP PCB C SAMPLE COLOR ORANGE REDDISH ORANGE BROWN Syringe #: Tests Required (Internal Purposes Only) GAUGE DOCUMENTATION RESET NO YES / NO BLACK OTHER: GAUGE OIL LEVEL PRESSURE SAMPLE DATA SAMPLE POINT SEDIMENT AMB. TEMP HUMIDITY READING SEE DIAGRAM AT RIGHT KPA BOTTOM VALVE DM NO 7. C East Tx Oil Filled Equipment Inspection Page of 78 % NO

15 Cargill Terminal West - TX S/N: 968 Oil & Gas Results C-

16 Fluid Test Report Maintenance Serial Number: 968 kva Rating: 4 Cargill Limited Cargill Terminal Nameplate Information kv Rating: 7./.7 Apparatus Type: TRN Manufacturer: WESTINGHOUSE Designation: Fluid Type: Year Manufactured: 967 Fluid Capacity (G): 7 West - TX OIL Sample Date: Job Number: Jun-7-6 C- Jun-- C-7 Dissolved Gas Analysis D6-C Limits Expressed in PPM Hydrogen (H₂) 7 8 Methane (CH₄) Ethane (C₂H₆) Ethylene (C₂H₄) Acetylene (C₂H₂)... Carbon Monoxide (CO) Carbon Dioxide (CO₂) Oxygen (O₂) 8 4 Nitrogen (N₂) Total Dissolved Combustible Gas Total Gas Content (%) Fluid Quality Analysis Limits Voltage Class >69kV - <kv Moisture Content D (ppm) 7 Interfacial Tension D97 (mn/m)...8 Acid Number D974 (mg KOH/g)..4.4 Color Number D (Relative). L. Visual Examination D4 (Relative) CLEAR CLEAR CLEAR Dielectric mm D86 (kv) Dielectric Breakdown D877 (kv) 6 Power C D94 (%). Power C D94 (%). Additional Fluid Quality Tests PCB D49 (ppm) Specific Gravity D4 (Relative) Oxidation Inhibitor D668 (%) Notes: Limits Magna IV Engineering Serial Number: 968 Page of

17 Fluid Test Report Maintenance Cargill Limited Cargill Terminal Historic Graphs and Diagnostic Charts Total Gas Content (%) (All Gases) Key Gas Comparison (ppm) CO - H - Meth - Eth - Ethy - Ace Combustible Gases 6 4 Methane (CH4) 4 Ethane (CH6) Ethylene (CH4) Acetylene (CH) Hydrogen (H) Carbon Monoxide (CO) Non-Combustible Gases 6 4 Carbon Dioxide (CO) Thousands Nitrogen (N) Thousands Oxygen (O) Magna IV Engineering Serial Number: 968 Page of

18 Fluid Test Report Maintenance Cargill Limited Cargill Terminal Fluid Analysis Moisture Content (Should be <Limit) Interfacial Tension (Should be >Limit).6.4 Acid Number (Should <Limit) mn/m mg KOH/g Color Number (Should be <Limit) Dielectric Breakdown D877 (Should be >Limit) kv 4 4 Dielectric Breakdown D86 (Should be >Limit) Actual Values Acceptable Limits Magna IV Engineering Serial Number: 968 Page of

19 PREPARED FOR CARGILL OIL FILLED EQUIPMENT INSPECTION SHEET WO# C- TAG # WEST TX DATE SITE CARGILL TERMINAL TEST BY AREA MAIN SUB STANDARD MAINTENANCE APPROVED BY NAMEPLATE DATA EQUIPMENT TX KVA 4 # OF TAPS NO CRITERIA YES PCB CONTAMINATED LOW OIL LEVEL (GAUGE@ LOW) CANF-E6 June 7, 6 JMP MANUF. WESTINGHOUSE PRI VOLTS 7KV TAP FOUND/LEFT / TYPE ONAN SEC VOLTS 7 %IMPED.7% SO# 968 AMPS WEIGHT YEAR 967 CAPACITY LTRS 7 GALS TEMP RISE OIL TYPE MINERAL SYSTEM BREATHING DATE OF LAST OIL CHANGE (IF KNOWN) UNKNOWN CRITERIA YES ADEQUATE CLEARANCE TANK PRESSURE (Min:- Psi (-6.89 kpa)) BREATHERS PRE-SAMPLING CHECKLIST INSPECTIONS DESCRIPTION YES NO DESCRIPTION OK LV BUSHINGS ACCESSIBLE RADIATORS INSTALLED CONSERVATOR TANK GROUNDING ( LOCATIONS) PHYSICAL DAMAGE NITROGEN ADDED RELIEF VALVE INSTALLED SILICA DESICANT CONDITION LV BUSHING CONDITION RADIATOR CONDITION OIL LEAKS (WHERE) DIRT ACCUMULATION HV BUSHINGS ACCESSIBLE HV BUSHING CONDITION COMMENTS 6 PPM PROPER LEVEL FAIL COMMENTS BLUE DUSTY DUSTY N/A OK CORROSION / RUST ACCUMULATION PAINT IS GOOD NO DUSTY GAUGE READING DRAGHAND OIL TEMP WINDING TEMP STRAW WHITE STRAW YELLOW LEMON YELLOW Sampler: PSI PO# for Sampling Lab: REPORT RUSH: DGA D6C Dielectric.mm D86 Oxidation Inhibitor D668 NOTES: Moisture in Oil DB Dielectric.mm D86 Furfurals (paper degradation). NO WINDING TEMP GAUGE Interfacial Tension D97 Power Factor C D94 Metals D6ICP TRANSFORMER IS IN VAULT. Acid Number D974 Power Factor C D94 Viscosity D88. IMPERIAL GALLONS Color/Visual D, D4 Specific Gravity D98 Other: Dielectric.mm D877 C N/A JMP SAMPLE COLOR ORANGE REDDISH ORANGE BROWN PCB 4 C Syringe #: RESET NO YES / NO BLACK OTHER: Tests Required (Internal Purposes Only) GAUGE DOCUMENTATION GAUGE OIL LEVEL PRESSURE SAMPLE DATA SAMPLE POINT SEDIMENT AMB. TEMP HUMIDITY READING SEE DIAGRAM AT RIGHT KPA BOTTOM VALVE 6. C 78 % CO West Tx Oil Filled Equipment Inspection Page of NO NO

20 Cargill Terminal Sub S/N: 94 Oil & Gas Results C-

21 Fluid Test Report Maintenance Serial Number: 94 kva Rating: Cargill Limited Cargill Terminal Nameplate Information kv Rating:.4/.7 Apparatus Type: TRN Manufacturer: COOPER Designation: Sub Fluid Type: ESTER Year Manufactured: Fluid Capacity (L): Sample Date: Job Number: Jun-7-6 C- Jun-- C-7 Dissolved Gas Analysis D6-C Limits Expressed in PPM Hydrogen (H₂) 6 6 Methane (CH₄) 6 6 Ethane (C₂H₆) Ethylene (C₂H₄) Acetylene (C₂H₂)... Carbon Monoxide (CO) 6 8 Carbon Dioxide (CO₂) Oxygen (O₂) 4 Nitrogen (N₂) Total Dissolved Combustible Gas Total Gas Content (%) Fluid Quality Analysis Limits Voltage Class 69kV Moisture Content D (ppm) Interfacial Tension D97 (mn/m)...9 Acid Number D974 (mg KOH/g)...4 Color Number D (Relative). Visual Examination D4 (Relative) CLEAR CLEAR CLEAR Dielectric mm D86 (kv) 7 47 Dielectric Breakdown D877 (kv) 6 Power C D94 (%). Power C D94 (%). Additional Fluid Quality Tests PCB D49 (ppm) Specific Gravity D4 (Relative) Oxidation Inhibitor D668 (%) Limits <. Notes: 7/6/6 : Limits based on Mineral Oil Insulating Fluid. All Results considered normal for Natural Ester Insulating Fluid. Magna IV Engineering Serial Number: 94 Page of

22 Fluid Test Report Maintenance Cargill Limited Cargill Terminal Historic Graphs and Diagnostic Charts Total Gas Content (%) (All Gases) Key Gas Comparison (ppm) CO - H - Meth - Eth - Ethy - Ace Combustible Gases Methane (CH4) Ethane (CH6) Ethylene (CH4) Acetylene (CH) 4 Hydrogen (H) 4 Carbon Monoxide (CO) Non-Combustible Gases Carbon Dioxide (CO) Thousands Nitrogen (N) Thousands... Oxygen (O) Magna IV Engineering Serial Number: 94 Page of

23 Fluid Test Report Maintenance Cargill Limited Cargill Terminal Fluid Analysis 4 Moisture Content (Should be <Limit) mn/m Interfacial Tension (Should be >Limit) mg KOH/g..... Acid Number (Should be <Limit) Color Number (Should be <Limit) Dielectric Breakdown D877 (Should be >Limit) kv 4 4 Dielectric Breakdown D86 (Should be >Limit) Actual Values Acceptable Limits Magna IV Engineering Serial Number: 94 Page of

24 PREPARED FOR CARGILL OIL FILLED EQUIPMENT INSPECTION SHEET WO# C- TAG # SUBSTATION DATE SITE CARGILL TERMINAL TEST BY AREA SUB STANDARD MAINTENANCE APPROVED BY NAMEPLATE DATA EQUIPMENT TX KVA # OF TAPS NO CRITERIA YES PCB CONTAMINATED LOW OIL LEVEL (GAUGE@ LOW) CANF-E6 June 7, 6 SB MANUF. COOPER PRI VOLTS.4Kv TAP FOUND/LEFT / TYPE ONAN SEC VOLTS 7 %IMPED SO# 94 AMPS WEIGHT YEAR CAPACITY LTRS GALS TEMP RISE OIL TYPE FR SYSTEM BREATHING DATE OF LAST OIL CHANGE (IF KNOWN) NEW TRANSFORMER CRITERIA YES ADEQUATE CLEARANCE TANK PRESSURE (Min:- Psi (-6.89 kpa)) BREATHERS PRE-SAMPLING CHECKLIST INSPECTIONS DESCRIPTION YES NO DESCRIPTION OK FAIL HV BUSHINGS ACCESSIBLE HV BUSHING CONDITION LV BUSHINGS ACCESSIBLE RADIATORS INSTALLED CONSERVATOR TANK GROUNDING ( LOCATIONS) PHYSICAL DAMAGE NITROGEN ADDED RELIEF VALVE INSTALLED SILICA DESICANT CONDITION NOT USED LV BUSHING CONDITION RADIATOR CONDITION OK OIL LEAKS (WHERE) DIRT ACCUMULATION COMMENTS UNKNOWN PROPER LEVEL COMMENTS CORROSION / RUST ACCUMULATION PAINT IS GOOD NO OK DUSTY GAUGE READING DRAGHAND OIL TEMP WINDING TEMP STRAW WHITE STRAW YELLOW LEMON YELLOW Sampler: PSI PO# for Sampling Lab: REPORT RUSH: DGA D6C Dielectric.mm D86 Oxidation Inhibitor D668 NOTES: Moisture in Oil DB Dielectric.mm D86 Furfurals (paper degradation). NO WINDING TEMP GAUGE Interfacial Tension D97 Power Factor C D94 Metals D6ICP TRANSFORMER IS IN A VAULT Acid Number D974 Power Factor C D94 Viscosity D88 Color/Visual D, D4 Specific Gravity D98 Other: Dielectric.mm D877 4 C N/A SB SAMPLE COLOR ORANGE REDDISH ORANGE BROWN PCB 4 C Syringe #: RESET NO YES / NO BLACK OTHER: Tests Required (Internal Purposes Only) GAUGE DOCUMENTATION GAUGE OIL LEVEL PRESSURE SAMPLE DATA READING SEE DIAGRAM AT RIGHT SAMPLE POINT SEDIMENT AMB. TEMP HUMIDITY KPA BOTTOM VALVE 6. C 4 % DS Substation Oil Filled Equipment Inspection Page of NO NO

25 Cargill Terminal 6OCB S/N: 6 Oil & Gas Results C- Nameplate Information

26 Fluid Test Report Maintenance Serial Number: 6 kva Rating: Cargill Limited Cargill Terminal Nameplate Information kv Rating: 7. Apparatus Type: OCB Manufacturer: GE Designation: Fluid Type: Year Manufactured: 967 Fluid Capacity (G): 7 6OCB OIL Sample Date: Job Number: Jun-7-6 C- Jun-- C-7 Dissolved Gas Analysis D6-C Limits Expressed in PPM Hydrogen (H₂) Methane (CH₄) Ethane (C₂H₆) 6... Ethylene (C₂H₄)..8.7 Acetylene (C₂H₂)... Carbon Monoxide (CO) Carbon Dioxide (CO₂) 6 8 Oxygen (O₂) 74 Nitrogen (N₂) 6 69 Total Dissolved Combustible Gas 7 4 Total Gas Content (%) Fluid Quality Analysis Moisture Content D (ppm) Limits Voltage Class >69kV - <kv Interfacial Tension D97 (mn/m)... Acid Number D974 (mg KOH/g)... Color Number D (Relative). L.. Visual Examination D4 (Relative) CLEAR CLEAR CLEAR Dielectric mm D86 (kv) 8 6 Dielectric Breakdown D877 (kv) 6 Power C D94 (%). Power C D94 (%). Additional Fluid Quality Tests PCB D49 (ppm) Specific Gravity D4 (Relative) Oxidation Inhibitor D668 (%) Limits <. Notes: : All results considered normal for OCB operation Magna IV Engineering Serial Number: 6 Page of

27 Fluid Test Report Maintenance Cargill Limited Cargill Terminal Historic Graphs and Diagnostic Charts Total Gas Content (%) (All Gases) Key Gas Comparison (ppm) CO - H - Meth - Eth - Ethy - Ace Combustible Gases Methane (CH4) Ethane (CH6) Ethylene (CH4) Acetylene (CH) Hydrogen (H) Carbon Monoxide (CO) Non-Combustible Gases 7 Carbon Dioxide (CO) Thousands 7 Nitrogen (N) Thousands Oxygen (O) Magna IV Engineering Serial Number: 6 Page of

28 Fluid Test Report Maintenance Cargill Limited Cargill Terminal Fluid Analysis Moisture Content (Should be <Limit) mn/m Interfacial Tension (Should be >Limit) mg KOH/g Acid Number (Should <Limit) Color Number (Should be <Limit) Dielectric Breakdown D877 (Should be >Limit) kv 4 Dielectric Breakdown D86 (Should be >Limit) Actual Values Acceptable Limits Magna IV Engineering Serial Number: 6 Page of

29 PREPARED FOR CARGILL OIL FILLED EQUIPMENT INSPECTION SHEET WO# C- TAG # 6 OCB DATE SITE CARGILL TERMINAL TEST BY AREA MAIN SUB STANDARD MAINTENANCE APPROVED BY NAMEPLATE DATA EQUIPMENT OCB KVA # OF TAPS NO CRITERIA YES PCB CONTAMINATED LOW OIL LEVEL (GAUGE@ LOW) CANF-E6 June 7, 6 JMP N/A MANUF. GE PRI VOLTS 7KV TAP FOUND/LEFT / TYPE WSO SEC VOLTS %IMPED N/A SO# 6 AMPS WEIGHT YEAR 967 CAPACITY LTRS 7 GALS TEMP RISE N/A OIL TYPE MINERAL SYSTEM BREATHING DATE OF LAST OIL CHANGE (IF KNOWN) UNKNOWN CRITERIA YES ADEQUATE CLEARANCE TANK PRESSURE (Min:- Psi (-6.89 kpa)) PRE-SAMPLING CHECKLIST INSPECTIONS DESCRIPTION YES NO DESCRIPTION OK BREATHERS HV BUSHINGS ACCESSIBLE LV BUSHINGS ACCESSIBLE LV BUSHING CONDITION RADIATORS INSTALLED CONSERVATOR TANK GROUNDING ( LOCATIONS) PHYSICAL DAMAGE NITROGEN ADDED RELIEF VALVE INSTALLED SILICA DESICANT CONDITION HV BUSHING CONDITION RADIATOR CONDITION OIL LEAKS (WHERE) DIRT ACCUMULATION COMMENTS <. PPM NO GAUGE FAIL COMMENTS NOT USED SOME CHIPS N/A N/A OK CORROSION / RUST ACCUMULATION PAINT IS POOR NO NONE VISIBLE GAUGE READING DRAGHAND OIL TEMP WINDING TEMP STRAW WHITE STRAW YELLOW LEMON YELLOW Sampler: PSI PO# for Sampling Lab: REPORT RUSH: DGA D6C Dielectric.mm D86 Oxidation Inhibitor D668 NOTES: Moisture in Oil DB Dielectric.mm D86 Furfurals (paper degradation) Interfacial Tension D97 Power Factor C D94 Metals D6ICP Acid Number D974 Power Factor C D94 Viscosity D88 Color/Visual D, D4 Specific Gravity D98 Other: Dielectric.mm D877 6 C JMP SAMPLE COLOR ORANGE REDDISH ORANGE BROWN PCB Syringe #: RESET YES / NO YES / NO BLACK OTHER: Tests Required (Internal Purposes Only) GAUGE DOCUMENTATION GAUGE OIL LEVEL PRESSURE SAMPLE DATA SAMPLE POINT SEDIMENT AMB. TEMP HUMIDITY READING SEE DIAGRAM AT RIGHT KPA BOTTOM VALVE YES / NO. C 78 % DS OCB Oil Filled Equipment Inspection Page of NO