Distribution Key Notes n words

1 cubic ft of water

Is 62.38lbs

SCBA

Self Containing Breathing Apparatus

Cathodes are used in storage tanks for…

Corrosion control

Most common flow meter for Residential water taps is…

Positive Displacement

What test is used to test free Chlorine ?

DPD

The purpose of a water tap?

To prevent Contamination of the water main

What is CT?

Contact Time- time it takes for disinfections

What causes reddish brown colors in Distribution System?

Iron

Primary Chemical used to disinfect water?

Chlorine ( not bleach )

What measures the smoothness of a pipe?

C factor- Coefficient Factor

The SDWA defines a public water system supplying piped water for human consumption as one that has…

15 service connections or serves 25 or more people for 60 days or more per year

What Type of valve used to throttle the flow of water?

Needle - only throttle

What class of fire involves oil or grease?

Class B

You should always pressurize a water line from..

The lowest point ( pushes the air out

Purpose of a check valve is to prevent..

Water from flowing in two directions

OSHA stands for?

Occupational Safety and Health Administration

What US agency establishes drinking water standards?

US EPA

A pH above 7.01 is considered..

To be basic

What is the chemical name for HTH?

Sodium hypochlorite

Measuring both free and combined chlorine together are known as..

Total Chlorine

The sacrificial part of a chlorine cylinder that ruptures to prevent failure is..

Fusible Plug

Inhaling what gas has the highest probability of acute toxic effects?

Hydrogen Sulfide

What is considered a free chlorine compound?

Hypochlorous acid

The distance between an outlet and a drain are better known as..

Air Gap

A barrier that prevents flow from returning upstream can be referred to as..

Check Valve

What’s the best indication that a successful disinfection procedure has been performed?

Negative Coliform Results

Water prone to depositing with the highest dissolved mineral concentration, originated from..

Groundwater

What’s the name of the commonly used liquid chlorine solution used for disinfections?

Sodium Hypochlorite

What’s should the residual chlorine read, be after 24hrs of disinfecting a newly installed distribution line?

10mg/Lor greater

What will cause black stains?

Manganese

The location name of a customers water service is..

Curb Stop

DPD is the chemical compound used in detecting combined or free what?

Chlorine=DPD

Producing air gaps to separate non compatible water sources best prevents…

Backflow

What class best put out a titanium fire?

Class D

The term stray current corrosion is defined as…

A corrosion caused by an outside electrical current

What class best puts out an electric fire?

Class C

Locking out & Tagging out involves what following steps?

De-energize

what repair kit is used to repair a cl2 ton cylinder?

Kit B

What is the sMCL of Fl?

2.0

What’s the MCL for cl2?

4.0

What is the activation level for lead & copper?

1.5 and 1.3mg/L

What’s the minimum cl2 level that must be maintained in the distribution system?

.2mg/L