What is main purpose of swabbing, Civil Engineering

Assignment Help:

Question

After construction of watermain, earlier to hydrostatic pressure test, swabbing is approved out. What is main purpose of swabbing?


Answer


Pipelines have to be tested before commissioning to check strength of watermain and absence of leak. Sooner than carrying out hydrostatic pressure test, swabbing is conducted to clear out refuse and dirt left inside pipeline during construction. Swabbing is necessary for pipes less than 600mm diameter since for larger size of pipes; they can be inspected on the inside to ensure cleanliness.

Following carrying out of hydrostatic pressure test, test for water sterilization is next conducted that involves collecting water sample from pipeline. Purpose is to check water quality like colour, turbidity, odor, pH value, conductivity. This is compared with superiority of water drawn from water provide point.


Related Discussions:- What is main purpose of swabbing

Levelling, principles of levelling

principles of levelling

Fathometer, define Fathometer in civil engineering field #Minimum 100 words...

define Fathometer in civil engineering field #Minimum 100 words accepted#

Invoice Method, How to raise an invoice with WCT for Civil construction job...

How to raise an invoice with WCT for Civil construction job?

Size of drainage near roads, how to calculate the size of drainage(box) wid...

how to calculate the size of drainage(box) width and height?

Why nautical mile is different from statute mile, One nautical mile is desc...

One nautical mile is described by one latitude minute of arc (there are 60 like minutes to a degree). This equals 1852 meters, and roughly (but coincidentally) 2000 yards or 6000 f

I am expert i this field, i require a workquestion #Minimum 100 words acce...

i require a workquestion #Minimum 100 words accepted#

Designing of watermain, Question In designing of watermain , regular p...

Question In designing of watermain , regular practice is to use supple iron for pipe size less than 600mm and to use steel for pipe size additional than 600mm. Give some speci

How to determine the frequency of flood, Q. How to determine the frequency ...

Q. How to determine the frequency of flood? Flood frequency may be estimated preferably from flood records, if available, for a number of years or they may be based on rainfall

Hydrographic data for design of bridge, Q.What Hydrographic data required f...

Q.What Hydrographic data required for Design of bridge? (i) Design discharge for bridge waterway and foundation with corresponding high flood levels. Frequency curve for annual

What will be the increase in horizontal thrust, A 9 metre high retaining wa...

A 9 metre high retaining wall retains a soil with the following properties: φ = 36°; γ = 18 kN/m 3 . What will be the enhance in horizontal thrust if the soil slopes up from the

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd