Doble Transformer Condition Assessment Next Steps Work Plan

DOBLE TRANSFORMER CONDITION ASSESSMENT NEXT STEPS WORK PLAN

# VALCO ID ACTION RESPONSIBILITY ECD1 VR0 a. Sample oil to be taken for Doble to assess

condition of transformer insulation using furan measurement analysis.

b. Treatment of oil using purification machine.

J. Ntim-Mensah / F. Addo

J. Ntim-Mensah / Frank Addo

09/10/15

13/11/152 VR1 a. Assess if Core to earth measurement can be

performed

b. Perform DC winding resistance tests on all taps

c. Increase oil sampling to every 6 months to ascertain the severity of the thermal fault

K. Sapong / J. Ntim-Mensah

K. Sapong / J. Ntim-Mensah


20/10/15

16/11/15

09/10/15

3 VR2 The transformer demonstrates acceptable test results and may be suitable for continued service with routine maintenance and diagnostic testing.

4 VR3 The transformer demonstrates acceptable test results and may be suitable for continued service with routine maintenance and diagnostic testing.

5 VR5 Sample oil to be taken for Doble to assess condition of transformer insulation using furan measurement analysis.

J. Ntim-Mensah / F. Addo 09/10/15

6 R11 a. Sample oil to be taken for Doble to assess condition of transformer insulation using furan measurement analysis.




09/10/15

27/11/157 R12 a. Sample oil to be taken for Doble to assess





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10/10/15

05/02/16

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DOBLE TRANSFORMER CONDITION ASSESSMENT NEXT STEPS WORK PLAN

12 R21 Sample oil to be taken for Doble to assess condition of transformer insulation using furan measurement analysis.

J. Ntim-Mensah / F. Addo 09/10/15

13 R22 The transformer demonstrates acceptable test results and may be suitable for continued service with routine maintenance and diagnostic testing.



16 R25 a. Sample oil to be taken for Doble to assess condition of transformer insulation using furan measurement analysis.

b. Treatment of oil using purification machine



09/10/15

19/02/1617 R26 The transformer demonstrates acceptable test results

and may be suitable for continued service with routine maintenance and diagnostic testing.

18 11T4 As no oil sample has being taken, it is highly recommended that routine oil samples be taken

J. Ntim-Mensah / Frank Addo 09/10/15

19 33T1 a. Inspection of cooling system for defects and schedule repairs if need be

b. Obtain load reading for analysis by Doble Engineering, South Africa

c. Sample oil to be taken for Doble to assess condition of transformer insulation using furan measurement analysis.


K. Sapong


14/10/15

16/10/15

09/10/15





K. Sapong


21/10/15

16/10/15

09/10/15




d. Treatment of oil using purification machine


K. Sapong



28/10/15

16/10/15

09/10/15

04/03/16

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Doble Transformer Condition Assessment Next Steps Work Plan

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