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BEAM Affiliate Training and Examination

25 June 2014

John A. Herbert

許 約 翰

BEAM Professional

Panel Chair Water Use Aspects, Technical Review Committee

Chairman BEAM Technical Review Panel

Director BEAM Society Limited

Water Use Aspects (WU)

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Construction, Operation, Maintenance ALL require water & EI

Water Use

Intent • Water is a limited and precious resource

• Raise awareness of the issues related to Water usage

• Encourage GREEN FEATURES

• THINK about water conservation

• Encourage use of 3rd party WELS labelling schemes

• Recognise building owners who implement conservation

that benefit the environment

3

Water Use

Green Features

• Twin Water Tanks

– Periodic Inspection

– Periodic Cleaning

– No INTERUPTION

4

Water Use

Green Features

• GreyWater

– Contains bacteria, detergents, phosphates, etc.

– Likely water treatment

5

Water Use

Green Features

• Rainwater Harvesting

– Alternate water source, make-up water for cooling

towers, irrigation, fountains, etc.

– Relieve pressure on Municipal Drainage system

6

Water Use

Green Features

• WELS

– Fittings Taps, Showers, Mixing taps

– Voluntary Label

– 1 = highest/best

– Refer to www.wsd.gov.hk

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Water Use

Green Features

• High Tech Irrigation System

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Water Use

Green Features

• QWRBS

• Maintenance

• WSD scheme

– Quality

– Water

– Recognition

– Scheme

– Building

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Water Use

Green Features

• No Plastic Water Bottles

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Water Use

Water Cycle (or Hydrological Cycle)

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12

Water Use

Catchment Local Yield

13 mcm - million cubic metre

Water Use

Spot the difference

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Water Use

Hong Kong Water History

1957 Salt water to Shek Kip Mei & Lei Cheng

First in Hong Kong

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Water Use

Hong Kong Water History

1960

Supply Agreement Shenzhen Reservoir

Importing Water

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Water Use

Hong Kong Water History

1964

Severe Water Rationing

4 hours service, every 4 days

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Water Use

Hong Kong Water History

1965 Dongjiang 68.2 mcm/year Supply

Imported

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Water Use

Hong Kong Water History

1973 Completion of Plover Cove Reservoir

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Water Use

Hong Kong Water History

1982 Water Rationing ended

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Water Use

Hong Kong Water History

1989 Dongjiang 1,100 mcm/pa Supply

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Water Use

Hong Kong Water History

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2003 Aquaduct commissioned

Covered supply to HK

Water Gathering

Grounds (HK)

Impounding

Reservoir

Water Treatment Works

Primary

Service

Reservoir

Service

Reservoir

To

Consumers Pumping

Station

Service

Reservoir

Pumping

Station

Consumers

Consumers

Raw Water

From Dongjiang

Water Service

Service Reservoir

Consumers

Consumers

Pumping

Station

Consumers

Consumers

Non-return

Valve

Sea

Level

Sea Wall

Sea Water Service

Water Use

BEAM Rating Tools

• Each rating tool (NB, EB, BI) targets water and effluent

conservation

• The criteria are similar, with some subtle differences

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BEAM New

Building

(NB)

Water Use

WU NB Weighting

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WuP1 Water Quality Survey

Rationale

1. Provide quality potable

water for all building

users

2. Parameters QWRSFB

Requirement

1. Water Sampling

2. Locations (all tanks and

farthest outlets in the

distribution system)

3. Schematic and layout

drawings c/w sample

points highlights

4. Method statements,

sample handling, etc.

5. Laboratory reports

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QWRSB

Water Use

QWRS Testing Parameters

pH:

Colour:

Turbidity:

Conductivity:

Iron:

E. Coli:

Total Coliform:

6.5 - 9. 2

≦15

≦3

≦300

≦0.3

NIL

NIL

WuP2 Water Saving Performance

Rationale

1. Minimize adverse

environmental impacts

Requirement

1. Summary Table

2. Flow rate calculation at

working pressure

3. Schematic and Layout

drawings

4. Catalogue/cut sheets

5. Use baseline data

provided in BEAM

manual

6. Records, Cx data,

delivery notes, site

photographs, etc.

Water Use

Green Features

• Water

• Efficiency

• Labelling

• Scheme

• (WELS)

Water Use

WuP2 Common Mistakes

• Pressure

– Fittings water flow rate declared (low flow taps,

showers, etc.) to based on working water pressure

• Calculation

– baseline/project case comparison incorrect

• Alternate Authority

– Inadequate justification for source of alternative data

should be CIBSE guide, IOP manual, ASPE, etc.

Water Use

P = ρ g h

height (h)

tank

outlet

outlet

65.5 mpd

29.5 mpd

99.0 mpd

WuP2 Common Mistakes

h bar flow rate

l/min

32.5 3.25 14 68.5 6.85 20

WuP2 Calculation format D

evic

e

du

rati

on

(s

eco

nd

s)

Dai

ly u

se p

er

occ

up

ant

Wo

rkin

g P

ress

ure

(b

ar)

water flow rate @ working pressure

daily consumption per person

(L/min) (L/min) (L) (L) Baseline Built Baseline Built

Tap 45 10.00 5.00 3.00 6.00 4.00 5.00 3.33 Tap 46 15.00 1.00 3.00 8.00 4.50 2.00 1.13 Tap 47 10.00 5.00 1.00 6.00 2.50 5.00 2.08 Tap 48 15.00 1.00 1.00 8.00 3.00 2.00 0.75

daily consumption per person 14.00 7.29

occupants 30.00 30.00

Operating days 365.00 365.00

annual consumption (litres) 153,300.00 79,843.75

annual consumption saved (litres) 73,456.25

percentage water saved 48%

Same for baseline

& built case

Wu1 Annual Water Use

Rationale

1. Reward higher

performance. Annual

water saving of 20%,

25% or 30% earns 1, 2,

or 3 credits respectively;

Requirement

1. Same as WUP1

Wu2 Monitoring and Control

Rationale

1. Water Seepage APP105

2. Early water leakage

detection to minimize

waste water

3. Encourage design

1. No embedded piping

2. exposed pipe leakage is

self evident

4. Coverage for ALL areas

inside building(s)

Requirement

1. Summary Table

2. Schematic and layout

drawings (water)

3. Schematic and layout

drawings (detection

system)

4. All Concealed piping

including: Meter rooms,

pipe ducts, risers, under

floor, plant rooms, etc.

5. Record, log book, BMS

output, photographs, etc.

Water Use

Wu2 Common Mistakes

• Coverage, Coverage, Coverage

– Detection system shall cover all concealed piping

including all plant rooms, ceiling voids, under raised

floors, pipe ducts, water meter rooms, risers, and all

other areas with concealed water pipework

– Exposed/surface mounted piping means any leakage

is self evident

– Underground piping is excluded from Assessment

Wu3 Water Efficient Irrigation

Rationale

1. Assess and minimise

environmental impacts

Requirement

1. Irrigation system which

does not require

municipal water after

establishment period

2. Highly efficient irrigation

technology

3. Greywater/Rainwater

harvesting installation

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Rainwater Greywater

sewer

roof

wash

Wu4 Water Recycling

Rationale

1. Alternative source for

potable water

2. Reuse water from

showers, washbasin,

condensate (not black

water)

Requirement

1. Greywater/Rainwater

harvesting installation

2. Calculations potable

water conservation

3. Schematic and layout

drawings

4. Catalogue/cut sheets

5. Records, log book,

meter readings, site

photographs

Wu5 Water Efficient Appliances

Rationale

1. Appliances are

dishwasher, washing

machine, etc. (not

taps/showers)

2. Reduce potable water

consumption

Requirement

1. Calculation (BEAM

Baseline data)

2. Schematic and layout

drawings

3. Appliance information

WELS label, catalogue,

and data sheet

4. Records, delivery notes,

site installation

photographs

Wu6 Effluent Discharge

Rationale

1. Reduce impacts

resulting from sewerage

discharge to lower

burden for municipal

waste handling systems

by 20%

2. Harbour Area Treatment

Scheme (HATS)

Requirement

1. Summary Table

2. Schematic and layout

drawings

3. Calculation (only WC

and urinals considered)

4. Technical information

WELS label, catalogue,

and data sheet

5. Records, delivery notes,

As fitted drawings,

record photographs

Water Use

Harbour Area Treatment Scheme

• HATS

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Existing

Building

(EB)

Water Use

INDOOR

ENVIRONMENTAL

QUALITY

ENERGY USE

SITE ASPECT

WATER

15%

MATERIALS

ASPECTS

Category Weighting Wu EB

Water Use

Different between NB and EB

Wu P1 Water Quality Survey

Wu P2 Minimum Water Saving Performance

Wu P3 Water Conservation Plan

Wu 1 Annual Water Use

Wu 2 Monitoring and Controls

Wu 3 Water Use for Irrigation

Wu 4 Water Recycling

Wu 5 Water Audit

Wu 6 Effluent Discharge to Foul Sewers

Water Use

Different between NB and EB

Wu P1 Water Quality Survey

Wu P2 Minimum Water Saving Performance

Wu P3 Water Conservation Plan

Wu 1 Annual Water Use

Wu 2 Monitoring and Controls

Wu 3 Water Use for Irrigation

Wu 4 Water Recycling

Wu 5 Water Audit

Wu 6 Effluent Discharge to Foul Sewers

EB WuP3 Water Conservation Plan

Rationale

1. Reduce water

consumption

2. Promote continuous

development

3. Encourage active

management for water

resources

Requirement

1. List responsible person

2. Report

3. Director signature

Water Use

EBWuP3 Suggested Content

– Organization chart

– Communication channels (staff, building users, etc.)

– Water monitoring

– Water Consumption

– Action Schedule to reduce water consumption

– Quantification of water savings

– Building owner director endorsement

– Prepared by E&M engineer

EB Wu5 Water Audit (BONUS CREDIT)

Rationale

1. Raise awareness

2. Encourage reduced

water consumption and

improved maintenance

Requirement

1. List Responsible person

2. Written Audit report

Water Use

EBWu5 Suggested Content

– Objective, reduction of all types of water consumption,

raising awareness

– Scope, Overview and detail of the scope of work,

including exclusions i.e. tenants areas

– Operations, Overview and details of the building

operation

– Maintenance, Overview and details of maintenance

activities, deferred maintenance

– Drawings, AS FITTED schematic and layout drawings

– Records, Inventory, records for all areas of water use,

regular monitoring, consumption, O&M, etc.

BEAM

Interiors

(BI)

Water Use

BEAM Interiors (BI)

• Designed for fitout renovation projects

– Lower Environmental Impacts

– Recognition

– Water Conservation

– Education

– Raise Awareness

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Water Use

BEAM Plus Interiors (BI)

• Applications

– Offices

– Hotels

– Retail

– fit-out projects

– Related areas of host building

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Water Use

Wu BI

Wu 1 Water Quality Survey

Wu 2 Minimum Water Saving Performance

Wu 3 Reduced Effluent to Sewer

Wu 4 No Bottled Water

Water Use

BU Wu Summary

BI Wu1 Water Quality Survey

Rationale

1. Good Water Quality

2. Minimise demand for

plastic drinking bottles

Requirement

1. Similar to NB

BI Wu2 Water Saving Performance

Rationale

1. Minimize adverse

environmental impacts

2. Encourage WELS

Requirement

1. Same As NB except 1

point for 30%, or 2 points

40% water saving

Duration - IR sensor

BI Wu3 Minimise Effluent Discharge

Rationale

1. Minimize adverse

environmental impacts

Requirement

1. Similar to NB

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Plastic Hong Kong Beach

BI Wu4 No Bottled Water

Rationale

1. Raise awareness

2. Reduce water bottles

usage

3. Reduce plastic waste

4. Encourage water coolers

with potable water

Requirement

1. List Responsible person

2. Layout plan with

equipment

3. Technical/cut sheets

4. Record photographs

Water Use

Keywords

• QWRS - Quality Water Recognition Scheme

優質食水認可計劃

• WELS - Water Efficiency Labelling Scheme 用水效益標籤計劃

• HATS - Harbour Area Treatment Scheme 淨化海港計劃

• Legionella 退伍軍人病桿菌

• Potable Water Storage Tanks 食水缸

• Rainwater Harvesting 雨水收集

• Flushing Water / Sea Water 沖廁水 / 海水

• Greywater 中水

• Irrigation 灌溉

• Periodic Inspection 定期檢查 64

Water Use

T +852 3610 5700

F +852 3996 9108

www.beamsociety.org.hk

1/F Jockey Club Environmental Building,

77 Tat Chee Road, Kowloon, Hong Kong

香港九龍塘達之路77號賽馬會環保樓1樓

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For later questions, please email us:

ba.training@beamsociety.org.hk