Corrosion Control
Metal coupons placed in the water to see if the water is corrosive or scale forming.
What is a coupon test
It is the primary reason for dry barrel fire hydrants
What is to keep from freezing
Measurement of the interior smoothness of a pipe
What is C factor
A space that is large enough to enter & work, but has limited means to enter or exit, and not for continuous occupancy
What is a confined space
L x W x H
What is the formula for ft3
A form of corrosion control the uses sacrificial anode
What is Cathodic Protection
System pressure under normal operating pressure
What is 35 PSI
They are found in the middle of the packing gland
What are lantern rings
A procedure used to ensure machines are shut off and not started again before maintenance or service is complete
What is lock out tag out
.785 x D2
What is the formula for ft2/pipe
The Baylis Curve
What is a test that indicates if the water is corrosive, scaling, or neutral
The minimum cl2 residual the the distribution system
What is 0.2 mg/L
Good record keeping
What is the most important part of a good maintenance program
Used to extinguish a grease fire
What is a type B fire extinguisher
tank, gals / Flow, gph
What is the formula for Detention time
Polyphosphate
What is a chemical that helps hinder pipe corrosion and scale
The MCL of Cl2
What is 4.0 mg/L
It regulate water levels in an elevated water storage tank
What is a altitude valve
A document that provides information about a product including hazards, handling procedures, and emergency measures
What is a Safety Data Sheet (SDS)
MGD x 8.34 x mg/L
What is the formula for lbs.
These contaminate is from the corrosion of the customer's service lines
Lead & Copper
Is form by organic compounds and free chlorine residual
What is TTHM's
Water main has a negative head
What is back siphonage
A set of regulations to insure employees are informed about the chemicals used in the work place
What is a Haz-com
(Flow,gpm)(Head,ft) / 3960
What is the formila for WHP