Contracts Finder · Historical

B Lock Penstocks Replacement

Historical · ContractNo open deadline

Historical: no longer open for bids.

Read the official notice on Contracts Finder

01/ The notice

Key facts

Value: £5,000,000Estimated value stated in the notice
Deadline (UK time): Thu 18 Jun 2026, 12:00 BSTA deadline does not apply to this historical notice. The source records Thu 18 Jun 2026, 12:00 BST, which is not an open deadline.
Published: 20 May 2026
Region: Any region

02/ The brief

What the notice says

Not fully read: this is the notice text; attached documents are not read.

KBS Maritime have a requirement for penstock replacements at B Lock within Portsmouth Naval Base. The project consists of 10 in number replacement penstocks in 6 chambers overall. The penstock system controls sea water via a culvert system between the harbour, the basin and the dry docks. These include levelling penstocks of circa 8 metres deep to drainage penstocks circa 18 metres deep. The replacement programme will replace the current cast irons doors with new with specification to be agreed along with the associated shafts, wedges, door nut, brackets, platforms, ladders and actuation and road plates. This project is due to commence in Q4 2026 with all to be replaced by Feb 2030. Contractors must be able to demonstrate design, manufacture and installation of penstock replacements in a marine environment including all site management under CDM regulations and competency of Health and Safety compliance and safe practices. Contractors must also possess at least five years' experience working within a marine environment. Contractors who do not provide suitable and sufficient evidence of this will not be considered

03/ Classification

CPV codes

Common Procurement Vocabulary codes, exactly as the notice lists them. No descriptions are added here.

42131220 45221220 42131120 42131143 50510000 42132100 42132110 42132120 42132130
42000000 42100000 42130000 42131000 45000000 45200000 45220000 45221000 50000000 50500000 42132000

04/ History

Releases of this notice

One release held, oldest first. Dates are UK time.

20 May 2026
Contract notice
Contract notice published 20 May 2026.
Release b761e5b8-1c74-4a82-a2c9-ed1d0436af5f
View this release on Contracts Finder (opens in a new tab)

05/ Limits

What the source does not tell us

Only one release is held, so there is no change history.

06/ Questions

About this notice

KBS Maritime Ltd published this notice.

Estimated value stated in the notice: £5,000,000.

07/ Related

Where to go next

These links follow a fixed rule applied to this notice’s buyer, text and CPV codes. They are not advice on whether to bid.

Reference: b761e5b8-1c74-4a82-a2c9-ed1d0436af5f
Source: Contracts Finder
Stage: contract · Contract
Last verified: Fri 22 May 2026, 01:02 BST
Read at: Fri 16 Oct 2026, 20:31 BST

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