WATER DISTRIBUTION TEST #4 QUESTIONS AND ANSWERS 100% CORRECT!

What the primary objective of water distribution operators - ANSWER-deliver safe and pleasant drinking water to the consumers what should the distribution operator do if there is a complaint about the water? - ANSWER-record the info and have the problem investigated and notify the person complained and what corrective was taken. Most accidents result from - ANSWER-carelessness and negligence why are adequate and reliable records very important? - ANSWER-to document the effectiveness of your operation an greater obligation rest with whom, and why? - ANSWER-operators because of the great number who drink the water from the distribution system purpose of the a water storage facility? - ANSWER-provide a sufficient amount of water to average or peak demand.,needs for fire protection, industrial uses and reserve storage where are storage tanks are found in the distribution - ANSWER-closest to the users, where higher pressure are needed and where land is available. what signifies and standpipes? - ANSWER-the height is greater than their diameter where are standing pipes are located? - ANSWER-high ground and near well field or point in the distribution system why are stand pipes preferred over elevated storage? - ANSWER-easy to maintain, more accessible safer and less objectionable from aesthetic viewpoint Hydropneumatic or pressure tank are used mostly in what type of plant? - ANSWER-small system wells, they are pressure vessels caution with the pressures relief valve. hydropneumatic or pressure tank should have what amount of air to operate sufficient. - ANSWER-2/3 or 1/3 air, otherwise cause the starting and stopping of the pumps causing damage. why should pressure tanks have a sight glass? - ANSWER-to observe water to air ratio what is an disadvantage of pressure tanks? - ANSWER-not enough storage to meet demand in cause of power outage, and little time to do maintenance what are surge tanks? - ANSWER-protect water line due too excessive surge pressure, also use to control water hammer and regulate the flow of water where should surge tanks be located? - ANSWER-close as possible to activity that create water hammering. name procedure for storage operating a storage tank. - ANSWER-fill all tanks during off peak hours, maintaining specified psi at critical points in distribution.