APPENDIX A (continued)
Get complete drawings of all facilities:
The following are usually included:
Be sure they are the latest.
Ask to be kept advised of any changes.
Get the following information on ownership of facilities:
Gas, water, power, telephone, etc. - Which are to be included in
project? Which are "utility owned?"
Where does utility's ownership and plant's jurisdiction begin?
Will the utility install insulation?
What life does the owner expect from facilities?
How many years?
What does a corrosion failure cost?
(Each type facility.)
Are any facilities extremely critical?
(No failures of any kind to be
tolerated because of costs or hazard.)
Is direct current being used anywhere in this plant or nearby? Get:
Complete information on where and why.
Wiring diagrams and schematics.
Method of grounding.
Are any abandoned facilities located in the vicinity? (Metal pipes,
etc., may be used as ground beds.) Are they connected or to be
connected to anything else?
Field Tests That Should Be Conducted:
Soil Resistivity. If site is uniform, take 5-foot and 10-foot (usual
depth of buried structures) readings at suitably spaced grid (20-foot
to 100-foot readings may be required). Do not exceed 100-foot spacing
with vibroground instrument. If route of piping or structure is
known, follow the route. Take readings of fill, if any.
Take pH at same places as resistivity, if soil is moist.