Commercial Proposal for Sea Water Intake

7/26/2019 Commercial Proposal for Sea Water Intake

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A

Rev.No.

Date DescriptionPrepared Checked Approved

ORIGINATOR

Contractor Document Title

COMMERCIAL PROPOSAL FOR SEA WATER

INTAKESub-contractors Document No. Rev.

No.

XXX XXX CON PRP 0001 A

Org.Code Client

Code

Disc. Code Doc. Type Ser. No.



Document Title

COMMERCIAL PROPOSAL

FOR SEA WATER INTAKE

Issue Date: Doc. No: XXX-XXX-CON-PRP-0001 Rev. A Page 2 of 6

CONTENTS

1 INTRODUCTION .............................................................................................................................. 3

2

DESCRIPTION OF THE PROJECT ................................................................................................. 3

3 SCOPE OF WORK ........................................................................................................................... 4

4

PRICING ........................................................................................................................................... 5

5 COMPLETION PERIOD ................................................................................................................... 5

6 APPENDICES ................................................................................................................................... 6



Document Title

COMMERCIAL PROPOSAL



1 INTRODUCTION

XXX has existing Fire Fighting System in place however they do not have any sea water supply during

any emergency case against Fire.

The purpose is to provide cost and time effective solution for this requirement.

2 DESCRIPTION OF THE PROJECT

As a preliminary study YYY initially studied three options for this study:

1) Installation of Fire Fighting Pumps at existing Jetty belonging to other facilities

2) Standalone Piled Platform on the sea.

3) Sea Water Intake System

As a result of the initial studies, 3rd option has been considered best option with consideration of the

followings;

1) Low Cost

2) Least time required for licenses, permissions from government or other parties.

3) No involvement with operations of existing facilities.

4) Shortest completion period



Document Title

COMMERCIAL PROPOSAL



3 SCOPE of WORK

Water Intake System comprises the following works:

9 meter deep, 1.3 meter wide at bottom and 246 meter long trench will be excavated on-shore.

Please see Section A-A and Section B-B in attached drawing for details. Total on-shore

excavation quantity is 14,800 m3.

Palplanches will be constructed at-shore locations to prevent collapsing of the trench.

Sand will be laid in the trench at on-shore as bedding material to cover the 710 mm HDPE pipe.

Bedding material will be selected according to soil conditions.

Concrete Water Intake Pond will be constructed with 50 cm shear walls and 1 meter foundation

to take 1,000 m3/hr water from the sea. Concrete Water Intake Pond will be coated with water

proof coating material resistant to positive and negative hydrostatic pressure.

246 meter long 710 mm PN10 HDPE pipe will be supplied, butt welded and installed at on-

shore.

Backfilling will be done with the excavated material on-shore and compacted.

2.4 meter deep from sea bed, 1.3 meter wide at bottom and 135.5 meter long trench will be

excavated off-shore. Please see Section C-C in attached drawing for details. Total off-shore

excavation quantity including intake head is 3,000 m3.

135.5 meter long, Ø710 mm PN10 HDPE pipe will be supplied; butt welded and installed off-

shore.

Concrete Blocks at every 4 meter will be mounted to the pipe to make the pipe sink both at-

shore and off-shore.

A special Intake Head will be prefabricated from concrete with 20 cm thick shear walls, 50 cm

foundation and 15 cm concrete cover. Stainless Steel Gratings will be installed and water proof

coating will be applied. Intake head will be 1.6 meter x 1.6 meter in dimensions to allow cleaning

with diver.

DN700 compensator will be supplied and installed between Intake Head and Intake Pipe.

349 meter long, Ø40 mm HDPE pipe Chlorination line will be installed to prevent any clam,

mussel blockage in the intake pipe.

Backfilling will be done with the excavated material off-shore

Water Intake Pond Cover Plates, Beams and Walkways will be supplied and installed.

Chlorine Injection Pump and Tank will be supplied and installed.

All piping materials, fittings, bolts and nuts will be supplied and erected.

Client supplied Fire Water pumps will be installed.

All Hydrostatic Tests and NDT Tests will be performed.

All concrete structures will be manufactured with sulphate resistant cement.

All construction vehicles, sea vessels and consumables necessary to perform the above

described works will be supplied by YYY.



Document Title

COMMERCIAL PROPOSAL



4 PRICING

YYY offers for the Engineering, Procurement and Construction of the scope defined in Section 3 at

USD ZZZ (ccc US Dollars).

Price excludes following items:

VAT

Supply of Fire Fighting Pumps

Connection of FF Pumps to the existing system

Any permit or license to be obtained by Free Zone or other Government Authorities.

5 COMPLETION PERIOD

YYY estimates completion of the work in 4 months provided that the works are performed in season

between April and October.



Document Title

COMMERCIAL PROPOSAL



6 APPENDICES

Appendix-1 Concept Sketches for Sea Water Intake

Documents

Commercial Proposal for Sea Water Intake