JANUARY 31 2003
C. Number of Anodes. Enter number of anodes.
D. Type of Backfill. Enter the type of backfill used
around the anodes as "coke breeze" or "natural soil."
E. Date Installed. Enter the date when the anode bed
Item 7. Location Reference Drawing Number. Location of rectifier
and test stations as recorded on the drawings. Enter the
number of the drawing and the sheet number for easy
Item 8. Current Required: Enter the amount of current needed to
give complete protection and the date such determination
Item 9. Location and Description: Enter a brief description of
the location of the rectifier and tests points in order
to easily find them, as "west leg of tower," or "pole
468-1," "300 feet east of the side entrance of building
1450." The test points indicated here and in items 10H
through 10K for recording values are the same test
Item 10. Operating Record:
Column A: The month tests are performed.
Column B: Enter the date of the month.
Columns C through G are readings of direct current only
and must be taken with authorized instruments that are
Columns C and E: Enter the DC voltage as found and
before any adjustments are made in Column C. At the same
time, read the amperage as found and enter it in column
Columns D and F: Adjust voltage until the required DC
level is reached (item 8). Enter the voltage obtained in
column D and amperage value obtained in column F.
Column G: The corrosion engineer must compute the
circuit resistance using ohms law and enter the value in
voltage as adjusted
amperage as adjusted
Column H: Test point 1 (referred to as "maximum
potential area") must be determined using data obtained
from the annual performance survey. This point is
located closest to the ground bed and is to be taken over
the structure in that area. Enter this value in column