TRANSFORMER OIL TESTSDissolved Gas-in-oil Analysis
Customer: HYES                                       Date: 11/17/99
Fquipment/Unit Location: HVES-23
anufacturer: ABB
Serial Number: 99J951003

TEST                 IN SERVICE NORMS*              RESULTS
Hydrogen (H2)          240 ppm                      <1     PPM
Methane (CH4)          160 ppm                      9      PPM
Acetylene (C2H2)        11 ppm                      4      PPM
Ethylene (C2H4)        190 ppm                      13     PPM
Ethane (C2H6)          115 ppm                      3      PPM
Carbon Monoxide   (CO) 580 ppm                      38     PPM
Carbon Dioxide (CO2)    n/a                         1355   PPM
Oxygen (02)             n/a                         23685  PPM
Nitrogen (N2)           n/a                         49091  PPM

TOTAL GAS               n/a                         74198  PPM
TOTAL COMBUSTIBLES      n/a                         67     PPM

Estimated TCG           n/a                         0.050  %

ANALYSIS: All gases are within accepted limits.

RECOMMENDATION: Resample in 1 year.

*In-Service Norms as follows
Generating           Transmission
H2      240 ppm               100 ppm
CH4     160 ppm               120 ppm
C2H2     11 ppm                35 ppm
C2H4    190 ppm                30 ppm
C2H6    115 ppm                65 ppm
CO      580 ppm               350 ppm
The above analyses were performed using the TOGAS direct injection system
rather than the vacuum extraction method described in ASTM D3612.

PRO/gasoil