Final Flashcards
Most conservative KAPA formula is
B 31G
KAPA diameter of the pipe increases The maximum allowable pressure goes
Down
Most conservative to most liberal formula for K APA
B 31G; modified B 31G; effective area method
Define MOP
Maximum operating pressure as specified by the manufacture of the pipe
Define MAP
Maximum allowable pressure is calculated using measurements of remaining wall thickness and pit depths
Define PF
This is a calculated pressure at which a failure is predicted due to condition of the pipe and other factors pressure should never exceed this level
Define factor of safety
Variable used in the calculation of the PF an MAP that is based on factors such as population environment location and other safety concerns the more risk to life or environment the lower the MAP will be calculated
If MOP is higher then MAP
MAP takes precedence
If MAP is higher then MOP
MOP takes precedence
If PF is lower than the MOP or the MAP
PF takes precedence
Magnesium Zinc and aluminum; Most electronegative potential
Most anodic; most active; least cathodic; least Noble
Copper platinum carbon graphite; Most electropositive metal
Least Anodic; least active; most cathodic; most noble
The point at which water will not accumulate
Critical velocity
How many gallons in a barrel?
42 gallons
In KAPA when the wall thickness decreases the MAP
Decreases
How many quarts in a gallon
4 quarts in a gallon
How many pints in the quart
2 pints in a quart
How do you calculate parts per million
Divide by 1 million
Iron counts: When the iron count increased by five times the corrosion rate almost?
Quadrupled this is almost a directly proportional rate
Scaling tendencies: data shows that as the pH decreases; the scale index
Decreases
Scaling tendencies: data shows that as temperature decreases to 77° the scale index _________; but as the temperature decreases below 76°F the scale index______________
Increases; decreases
Iron counts: When the water production almost tripled the corrosion rate almost?
Tripled this reflects a directly proportional rate
Scaling tendencies: data shows that as the alkalinity decreases; the scale index__________
Decreases
Scale tendencies: Data shows that as the calcium decreases; the scale index _________
Decreases
