W

|W |Water Supplies Department |
| |The Government of the Hong Kong Special Administrative Region | Agreement No. CE 8/2015 (WS)
First Stage of Desalination Plant at Tseung Kwan O
- Investigation, Design and Construction
DRAFT BRIEF (5 February 2015)
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Agreement No. CE 8/2015 (WS)
First Stage of Desalination Plant at Tseung Kwan O
Investigation, Design and Construction
BRIEF Table of Contents 1. Introduction 1 2. Description of the Project 1 3. Objectives of the Assignment 5 4. Description of the Assignment 6 5. Deliverables 17 6. Services to be provided by the Consultants 31 7. Programme of Implementation 117 8. Progress Reports 121 9. Financial Management 121 10. Standards and Specifications 122 11. Checking and Certification of the Design 123 12. Variations and Other Commitments 123 13. Resident Site Staff 124 14. Director's Representative 126 15. Control of the Project and Assignment 126 16. Information and Facilities Provided by the Employer 128 17. Consultants' Office and Staffing 128 18. Specialist and Sub-consultant Services 129 19. Surveys 129 20. Insurance 134
|Appendix I |-|Information and Facilities provided by the Employer|
| | | |
|Appendix II |-|Sketches |
| | |(i) Location Plan - Sketch No. G14-079 |
| | |(ii) Temporary Magazine for SCL project at the TKO |
| | |Area 137 - Sketch No. 52008/1 |
| | |(iii) Natural Terrain Hazard Study Area - |
| | |Sketch No. 52008/2 |
|Appendix III |-|Relevant Standards, Guidelines and Manuals |
|Appendix IV |-|Treated Water Quality Objectives |
|Appendix V |-|Examples of Local and Overseas Relevant Projects |
|Appendix VI |-|Guidelines to Resident Site Staff who need to |
| | |conduct Inspection Visits outside Hong Kong |
|Appendix VII |-|Schedule of Resident Site Staff Standards and |
| | |Duties and Minimum Site Supervision Requirements |
| | |for Geotechnical Works |
Agreement No. CE 8/2015 (WS) First Stage of Desalination Plant at Tseung Kwan O
Investigation, Design and Construction
BRIEF
1. Introduction 1.1 This Brief is to be read in conjunction with the Memorandum of
Agreement, the General Conditions of Employment of Engineering and
Associated Consultants for a Design and Construction Assignment (1997
Edition) [hereinafter referred to as the General Conditions of
Employment], the Special Conditions of Employment, the Schedule of
Fees, Appendices to this Agreement and any other instructions as may
be issued by the Director's Representative (DR) from time to time.
For the avoidance of doubt but without prejudice to Clause 7 of the
General Conditions of Employment, the performance of the Services
specified herein shall be subject to Clause 22 of the General
Conditions of Employment.
2. Description of the Project 1. The Total Water Management (TWM) strategy was promulgated in 2008 by
the Hong Kong Government. It is an integrated, multi-sectoral
approach built on good water demand and supply management initiatives.
One of the key supply management initiatives is to diversify the water
supply resources and to develop new water resources to better prepare
Hong Kong for uncertainties such as acute climate change and low
rainfall. Under the TWM strategy, Hong Kong should broaden its
strategic investment in advanced water treatment for desalination of
seawater. 2. The general background of the Project is as described in Planning
Report No. 3/2011 "Planning and Investigation Study of Desalination
Plant at Tseung Kwan O" issued by the Development (2) Division of
Water Supplies Department (WSD) dated January 2012. 3. The following consultancies studies have been completed in 2002 and
2007 respectively on the development of desalination facilities in
Hong Kong:- a) CE 71/2000 (WS) "Feasibility Study on Development of Desalination
Facilities in Hong Kong"; and
b) CE 97/2002 (WS) "Pilot Plant Study on Development of Desalination
Facilities in Hong Kong - Investigation".
The studies confirmed the technical feasibility of desalination using
reverse osmosis (RO) under local conditions to produce potable water
complying with the World Health Organisation (WHO) standards.
4. In December 2012, WSD engaged a consultant to carry out the
feasibility study for the Project under Agreement No. CE 21/2012 (WS)
(the Feasibility Study). The preliminary findings, conclusions and
recommendations of the Feasibility Study are contained in the draft
Final Report and the associated reports and working papers listed in
Appendix I of this Brief. 5. Subject to the investigation review under the Investigation, Design
and Construction Assignment (the Assignment), the Project comprises
the following:- a) formation of a site in TKO Area 137 to provide sufficient space
for a desalination plant with ultimate water production output at
270,000 m3 per day;
b) construction of seawater treatment components of a desalination
plant using RO technology with an initial water production output
at 135,000 m3 per day;
c) construction of associated facilities (the intake pipes, outfall
pipes, administration building, laboratory, maintenance workshop,
chemical building, chlorine building, sludge filter press
building, seawater intake pumping station, desalinated water
pumping station and power supply facilities) and making provision
for future expansion of the desalination plant to an ultimate
water production output at 270,000 m3 per day;
d) laying of a trunk main with a capacity of 270,000 m3 per day for
the transfer of fresh water produced at the desalination plant to
the Tseung Kwan O Fresh Water Primary Service Reservoir
(TKOFWPSR); and
e) provision of all associated civil, structural, geotechnical,
marine, electrical and mechanical works, including landscaping,
permanent and temporary accesses. 6. The general layout of the proposed works is shown on Sketch No. G14-
079 in Appendix II. 7. The Project is classified as a Designated Project under item E.2 of
Part I, Schedule 2 of the Environmental Impact Assessment (EIA)
Ordinance (Cap. 499) as the project involves construction of a
proposed desalination plant with a capacity of more than 100,000 m3
per day. Under the EIA Ordinance, an Environmental Permit (EP) from
the Environmental Protection Department (EPD) is required for the
implementation of the Project. 8. A project profile for the Project was prepared and submitted to
Director of Environmental Protection (DEP) and an EIA Study Brief for
the Project was obtained in January 2014 under the Feasibility Study.
In applying for the required EP, an EIA report for the Project should
be prepared for the approval of the DEP. The EIA report for the
Project is being prepared and expected to be submitted to DEP in March
2015 under the Feasibility Study. In the event that variation of the
EP is required, a revised EIA report for the Project may be required
to be prepared for the approval of the DEP. 9. Under the Feasibility Study it is recommended that chlorine would be
used in the disinfection process and the proposed desalination plant
will be classified as a Potentially Hazardous Installation (PHI) since
it has a chlorine store exceeding the inventory threshold of 10 tonnes
or has any storage in one tonne drums in accordance with Section 4.2,
Chapter 12.4 of the Hong Kong Planning Standards and Guidelines
(HKPSG). Since the plant is classified as a PHI, a risk and hazard
assessment (HA) study to quantify the risks, investigate risk
mitigation measures and implement the recommended mitigation measures
for the plant during and after construction has been carried out under
the Feasibility Study. A Planning Study and an Action Plan will be
undertaken by Planning Department (PlanD). As a follow up, it is
required under the Assignment to submit a report on the HA to the
Coordinating Committee on Land-use Planning and Control relating to
Potentially Hazardous Installation (CCPHI) for consideration and
endorsement. The action plan and recommendations specified in the
report on the HA, the Planning Study and the Action Plan shall be
implemented during the Construction and Operational Phases of the
Project. 10. The delivery method of the p