HMS Alliance Cofferdam Work

Contract summary

Industry

• Structural products and parts except prefabricated buildings - 44212000

• Construction work for water projects - 45240000

• Special trade construction works other than roof works - 45262000

Location of contract

PO12 2AS

Value of contract

£85,000

Procurement reference

224600

Published date

24 November 2021

Closing date

7 January 2022

Closing time

12pm

Contract start date

24 January 2022

Contract end date

31 March 2022

Contract type

Works

Procedure type

Open procedure (above threshold)

Contract is suitable for SMEs?

No

Contract is suitable for VCSEs?

No

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Description

The NMRN are seeking works to the cofferdam which is beneath the submarine HMS Alliance. The cofferdam requires the removal of the stone ballast (and storage) to access to repair the drainage, as well as removal of the walkway at the bow end of the cofferdam.

The walkway will require re-installation as part of the works itself after the drainage of the cofferdam has been repaired and the ballast removed reinstated. This is detailed in the Annex's of this document.

The work will be carried out at the Royal Navy Submarine Museum, and the work carried out will often be with the museum itself open to the public. However the NMRN understands that some work will require the closure of the site or the submarine for the work to be carried out.

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More information

Attachments

• HMS Alliance Cofferdam ITT v2.1.pdf
• Tender notice
• ITT Open Procedure for HMS Alliance Cofferdamn Works v2.1

• New NMRN Service Contract v3-Example.pdf
• Contract draft
• Example of a Service Contract and T&Cs

• Annex B- RNSM Original Concrete walkway support pad details 16676-S-001 Rev A.pdf
• Annexes to the Contract
• Annex B- Original Drawings for the Concrete Walkway Support Pad

• Annex C- RNSM Original CofferdamWalkway and decking area as fitted.pdf
• Annexes to the Contract
• Annex C- Original Drawings of Cofferdam Walkway and Decking Area

• Annex D- RNSM Original Access to HMS Alliance and Walkways.pdf
• Annexes to the Contract
• Annex D- Original Drawings of Access into HMS Alliance and Surrounding Walkway.

• Annex E- Cofferdam Construction Photos.pdf
• Annexes to the Contract
• Annex E- Photographs of before the Cofferdam installation in 2010/11 and the construction of it. Including ballast filling.

• Annex A. Alliance Survey Report and Overview of Works.pdf
• Annexes to the Contract
• Overview of work that has been undertaken with notes on future work that requires to be done.

• Satement of Requirement- 01.pdf
• Technical specifications
• Statement of Requirement for the work on the Cofferdam, document #1.

• Statement of Requirement- 02.pdf
• Technical specifications
• Statement of Requirement for the works on the Cofferdam, document #2

• Statement of Requirement- 03.pdf
• Technical specifications
• Statement of Requirement for works on cofferdam, document #3

• Cofferdam Amendment- Memorial Stone Relocation.pdf
• Annexes to the Contract
• Addition to the current ITT and Annexes regarding the relocating of the Memorial Stone presently located at the front of the Cofferdam during works.

Additional text

Further communications can be made to Roy Smith Conservation and Maintenance Manager

Telephone; 02392 891370 Ext: 2091

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About the buyer

Contact name

Dave Hartley

Address

National Museum of the Royal Navy, Main Road
HM Naval Base Portsmouth
PORTSMOUTH
PO13NH
England

Telephone

02392891370 ext 2042

Email

tenders@nmrn.org.uk