Cold water supply and Treatment

Slides:



Advertisements
Similar presentations
6.3 Natural processes break down rocks
Advertisements

Stalactites and Stalagmites
Groundwater Chapter 9, Section 2.
Groundwater What is it and why is it important?
Unit 206: Domestic hot water systems
Walls Ron Gatepain constructionsite.
Unit 205: Cold water systems
Plumbing System Albert Einstein was named an honorary member of the Plumbers and Steamfitters Union after publicly stating that he would become a plumber.
BLM National Training Center SPRING DEVELOPMENTS.
Water Underground S6E3 Students will recognize the significant role of water in Earth processes. S6E3.a Explain that a large portion of the Earth’s.
1.3: Fresh Water Flows Underground Groundwater: Water held underground Permeable: A substance that liquids can flow through. Ex: coffee filter, soil,
Outcome 2 Materials used to install domestic central heating pipework Unit 208: Central heating systems.
Unit 206: Domestic hot water systems
Steel Pipe Plumbing Systems
Fresh Water. Most of the Earth’s fresh water is found in moving water and in standing water. Rivers, streams, and springs are moving water, ponds, lakes,
Water © PDST Home Economics. Water cycle Water we use in our houses comes from rainfall which forms rivers or lakes or reservoirs, is then treated and.
Screened Warning Pipe A screened water pipe is a requirement under the water regulations. The pipe should be one size larger that the supply pipe.
Water Supply & Management Obj: Discuss the nature, importance and sources of water.
Water and Solubility Write a definition for these words: Solute: Solvent: Solution: Atmospheric water vapour Run-off Transpiration Atmospheric water vapour.
Water Treatment. What is the chemical formula for water?? H 2 O What do these letters mean? (Look at the periodic table) H = Hydrogen O = Oxygen Water.
Trade of Plumbing – Phase 2 Module 2 – Unit 7 Module 2: Domestic Hot and Cold Water Services Unit 7 – Sources and Classification of Water Supply Duration.
بسم الله الرحمن الرحيم. Environment Water Environment It implies all the external factors either living and non living material that surround the man.
Unit 205: Cold water systems
Sources of water (RAIN)
Residential Construction Unit 5 Energy Efficiencies and Mechanicals Mr. Todzia.
Subsurface drainage – Investigations
Scientific properties and principles of water
Water Movement. The World’s Water 97% Salt Water 2.5 % Frozen Fresh Water.5% Usable Fresh Water.
GROUNDWATER. FRESHWATER IS ONE OF EARTH’S MOST ABUNDANT AND IMPORTANT RENEWABLE RESOURCES.
Chapter 37 Pipeline Construction. Objectives After reading the chapter and reviewing the materials presented the students will be able to: Explain the.
Portland Drinking Water. Bull RunBull Run--Source primary drinking water supply for Portland Located 26 miles from downtown Portland in Sandy River basin,
Hard Water When washing with soap, do you find that the soap does not lather or leaves a floating scum on the surface of the water? This is HARD WATER.
Introduction to NSF Lead Leaching NSF 61 Safe Drinking Water Act Revision Lead Content Standards – NSF 61-G – NSF 372 Marking.
Direct Hot Water. What Cold Water System is Pictured? What hot Water System is Pictured?
Where does our drinking water come from? This means the water we drink has run through and across rocks.
Cold Water Understand and apply domestic cold water system installation and maintenance techniques.
FLUID FLOW FOR CHEMICAL ENGINEERING Dr Mohd Azmier Ahmad Tel: +60 (4) EKC 212 CHAPTER 8 (PART 1) TRANSPORTATION SYSTEM.
House Drainage System By- Prajyoti P. Upganlawar
Distribution System If microorganism colonize a storage vessel, the latter then acts as a microbial reservoir and contaminates all water passing through.
Unit 209: Drainage systems
Materials Plastics.
National Diploma Mechanical and Electrical Services Construction Cold Water Supplies.
An introduction to Private Water Systems
 Water that sinks deep into the zone of saturation and fills available spaces in cracks and between grains of sediment or rock.
CROSS CONNECTION CONTROL PROGRAM
Hard and Soft Water.
GROUND WATER Introduction Sources and Discharge of Ground Water
Chemical Engineering Drawing
Presented by.
Heating Ventilation and Air Conditioning
Chapter 10 Groundwater!.
WATER Water Resources.
DAMP-PROOFING AND WATER-PROOFING COURSE
Wall Openings You will learn about the types and function of wall openings. You will learn about the components parts of each opening and why they are.
RESIDENTIAL PLUMBING SYSTEMS (WATER SUPPLY)
NSF International Drinking Water Product Standards
Electrical Gas Plumbing Heating & Cooling
PLUMBING APPLIANCES & COMPONENTS
Water Beneath the Surface
Hot water Systems Heaters.
By: Aaliyah H., Christina G., Jasmine P.
5508BESG Services and Utilities Lecture 1
Fresh Water.
Hot Water Systems Cylinders and Systems.
Cisterns and Insulation
Common Requirements Taps and Valves.
1.3: Fresh Water Flows Underground
TRENTON Casing Filler Presentation
PLUMBING MATERIALS, PIPE BENDING AND PRESSURE TESTING
Bell Ringer Describe one way estuaries are degraded:
Presentation transcript:

Cold water supply and Treatment Barry Spick

Objectives State the regulations and the purpose of the regulations covering cold-water Describe how water is collected, stored and distributed. Describe the cold water service from mains to a dwelling (including water meters) Barry Spick

Standards and Regulations What is the main British standard detailing installation of Hot and Cold supplies? BS 6700 Others BS 8000-15: Workmanship for Hot and Cold supplies Water Regulations Barry Spick

In chemical terms water is a compound of two gases : Hydrogen and Oxygen H20 Water has solvent power according to the strata or ground it passes through. Soft water, easy to produce a lather, doesn’t contains salts such as calcium carbonates or sulphates Hard water difficult to obtain a lather, does contain salts such as calcium carbonates and sulphates Barry Spick

How is hardness classified? Water is classified by the number of parts of calcium per million parts of water Soft water 0 to 50 Moderately soft 50 to 100 Slightly hard 100 to 150 Moderately hard 150 to 200 Hard 200 to 300 Very hard over 300 Barry Spick

Permanent or Temporary Hard? Temporary hardness leaves lime scale deposits on the inside of pipes and plumbing systems. Permanent hard occurs when water dissolves sulphates of limestone. Barry Spick

The water cycle Barry Spick

Wells There are three types of wells What type of well is this? A shallow well Does not penetrate the impervious strata What class is the water Water is classified as dangerous Pervious Impervious Pervious Shallow well Barry Spick

Wells What type of well is this? Deep well Penetrates the impervious strata What is water classed as Water is classed as wholesome Pervious Impervious Pervious Deep well Barry Spick

Artesian Well Water Penetrates under Impervious layer Water Table Pervious strata An Artesian well is below the water table and the ‘head’ of water causes the water to eject under pressure Impervious strata pervious strata Barry Spick

Summary of water source classification Wholesome: Spring water Deep Well water Upland surface water Suspicious: Stored rainwater 5 Surface water from cultivated land Dangerous: River water Shallow well Barry Spick

Is your water fit to drink? Yes it is, but only after it has been through these processes: Strained Filtered Chemically treated Sterilised Barry Spick

Water Distribution Reservoir Water Treatment Local Mains Trunk Mains SUPPLY Reservoir Water Treatment Local Mains Trunk Mains Principle Mains Barry Spick

End of Part One Barry Spick

Cold water supply and Treatment 2 Barry Spick

Connections to water mains Connection to main made with a ferrule whilst the main is still live via a “Wet Box” Connections can only be made by the Water Undertaker, in this area Yorkshire Water Barry Spick

How is the water service pipe connected to the water main? Water mains are made from various materials Steel PVC Cast – iron PVC: is now used extensively on new installations and mains replacements Barry Spick

Connection from main into building Pipe or duct Sealed at both Ends to prevent vermin etc 750mm To 1350mm Boundary Gooseneck Ferrule main Supply pipe Communication pipe Service pipe Barry Spick

Key points about service pipes Pipes to laid between 750mm minimum 1350mm maximum More than this would prevent ease of access Metal pipes should be protected against corrosion especially in acidic soils. Use of plastic coated pipe Wrapping pipe in anti corrosive tape Install pipe in duct Minimum size of service pipe is 15mm Barry Spick

Key points about service pipes If service pipes are laid on a ‘brownfield site’ (contaminated land) Be manufactured from metallic material or plastics barrier pipe Why? To prevent contaminants from the soil permeating through the plastics material into the water supply. Preferred location of isolation to whole of property Above ground – immediately on entry to the building Barry Spick

Key points about service pipes Stop valve to BS 1010 Drain valve : Screwdown type conforming to BS 2879. Pipe to be within duct at point of entry to dwelling If pipe is installed less than 750mm from external wall then: Insulated to a depth of 750mm Barry Spick

Stop valve chambers Ease of access to stop valve Minimum diameter of pipe: 150mm plastic pipe or earthenware Sited on a firm base Top to have stop valve cover Usually made from metal Barry Spick

External water meters Now becoming more widespread on domestic properties Meter pipes can be obtained pre-plumbed Are adjustable Top of meter to be no more than 300mm from lid Barry Spick

Internal Water Meters Water meters must have fittings to allow connection/disconnection without the use of heat Must be able to be isolated Have a permanent cross bond Max 1.5m from floor level Barry Spick

Internal Water Meters Cont’d When a meter is fitted in an enclosure Front of meter to be no more than 300mm from the front of enclosure Enables reading of meter Rules regarding connection as before Permanent cross bond to be fitted. Barry Spick

End of lesson Barry Spick