LIFE CYCLE OF DI WATER PIPELINE

Every living/nonliving thing has a life cycle. Life cycle is a very important thing in construction work because all construction works start with a huge investment. So constructed structure must provide  service for a certain period of time. The service life of structure widely depends on it's construction method, quality of work, actions on it during service life, environmental effects, changes done during it's service life, regular maintenance (not major repair). To know about the life cycle of water pipeline first I want say something about the construction material of pipeline. As we discussing about the life cycle of DI (Ductile Iron) pipeline so here I will write about Ductile Iron.

Ductile iron also known as ductile cast iron as it is advanced form of cast iron. Ductile iron retains not only all cast iron qualities but also provides more strength,toughness and ductility. The chemical composition of ductile iron is carbon, silicon, manganese, magnesium, phosphorus, sulfur, copper, iron. Ductile iron is flexible and can be bent without breaking. So as a pipeline construction material ductile iron can provide good service life. But the life cycle of pipeline not only depend on the type of pipe is used but also on how it is constructed.

The another important thing to have a good service life of pipeline is to maintain quality of joint. In case of ductile iron pipeline there are several types of joint. So before starting the construction work it is necessary to arrange training for the workers. This is the first step to prevent leakage of pipeline.

Next, during the construction work it is necessary to keep clean inside the pipeline. Never left any sand bag, wastage of food, cigarette filter inside the pipe, because when water flow inside the pipe these things will create obstruction, odor. So daily cleaning is important during construction work.

Another important thing is regular maintenance of pipeline such as valve chamber cleaning, inlet and outlet point water. checking during the natural disaster and repair if any damaged done by it, maintain the flow pressure as per specification because too much pressure will effect the joint which will result in leakage, following the operation rules exactly as directed by the constructor.

By ensuring these things I think DI pipeline for water supply will provide a same design service life and functional service life. And also the life cycle will be prevented from bad influence. 






  

Comments

Post a Comment

Popular posts from this blog

PIPELINE CONSTRUCTION MANAGEMENT

Pipeline construction in a wide range of construction work. As it includes a large area the work management is very important. To construct a pipeline we can divide the whole work in several parts which are route selection survey work, pipeline survey work, trial pit work, pipe laying work, after construction work. Route Selection Survey Work:  This is the primary work for pipeline construction. First we have to perform a preliminary survey through which area we need to construct the pipeline i.e. the area in which there are no water supply connection or the area which are only depended on under ground water. Pipeline Survey Work: After selecting the route we need to make the alignment for pipeline construction  By this survey work we will be able to know that how much land we need to excavate. For this work we can use survey instruments such as Total station, Leveling instrument etc. Trial Pit Work: The main purpose of this work is to check existing utilities, culvert, bridg
Read more

SAFETY FIRST

"Safety First" "Safety First" "Safety First". Yes readers, today I will share something about the construction site safety precautions. As construction is a wide thing it consists different kinds of work. So safety measures vary with it's kinds though there is some common thing like workers safety, third party safety etc. Here I will tell about the safety practices which are very important in water pipeline construction( specially Ductile Iron Pipe).   At first, around the working area safety pools and tape should be properly placed and after ensuring this by site manager work will be started. Third party is not allowed within the working perimeters.   # Worker's Safety: This is the most important thing, because without them construction work is impossible. Helmets, safety shoes, gloves and vest (safety belt and life jacket, if needed) must be worn by the worker and these things should be confirmed by safety manager of the site. Workers in hi
Read more

FORMULAS

Frequently used formulas in pipeline construction; 1. h = f(LV 2 /2Dg) h : Head loss (m) L : Length of pipeline (m) D: Diameter of pipe (m) (Normally nominal diameter presented in meter is used.) V: Flow velocity (m/s) g : Acceleration of gravity (= 9.8 m/s2) f : Head loss coefficient 2. For water pipeline, Hazen-Williams formula is commonly used. V = 0.35464C H D 0.63 I 0.54 Q = 0.27853C H D 2.63 I 0.54 I = 10.666 C H -1.85 D -4.87 Q 1.85  Where, CH : Coefficient For cement mortar or epoxy lined ductile iron pipe, a CH value of 150 can be used; however for design purpose, 130 is recommended, which includes losses in fittings, valves and other facilities, plus some allowance. I : Hydraulic gradient (unit head loss of the pipeline) = h/L Q : Flow volume (m3/s)
Read more