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10 Science Centre Road | Block 1, #01-12, Bestway Centre

Singapore 609079 | tel +65 6807 0500 | fax +65 6807 0502

enquiry@kreuzsubsea.com

KREUZ SUBSEA

Your Integrated Offshore Subsea Solutions Partner

Hot Tapping

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Project Profile – C26 Cluster Pipeline (Hot Taps)

Client End Client

01 Apr 2016

14 May 2016

Project Start

Project End

Kreuz Installer

Assets Deployed

D-1 Field

Bombay High

Project Location

a Pre- and Post- surveys

b Deck assembly and mock-up

test drill of how tap

assemblies

c Excavation of seabed under

the hot tap location to access

and assemble the hot-tap

d Removal of concrete and

corrosion coating

e 3 ea x hot taps (12”, 14” and

16”) on live line

f 5 ea x connecting spools

Water

Depth

110m

Hot tap assembly in water

Hot tap assembly lowered

Hot tap Clamp on the exposed pipe Drilling in progress

Spool lowered to seabed

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Contracting Tiers

Smart Tap Hot tap tooling

Dredger, Pipeline

Coating Removal

Tool

Kreuz Installer – installation vessel

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Hot Tapping – Mock-up on deck

Mock-up test

Deck Crew, Furmanite

and Oceaneering

assemble the hot tap, ball

valve and drill unit

Assembly will be fitted on

a test pipe piece

Perform a trial cut

Recovery of cut coupon

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Seabed Excavation

Excavation

Deck Crew prepare

dredger and deploy in

water

Diver position dredger

and excavate

Final Survey and

acceptance

Dredger recovered to

deck

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Coating Removal

Coating removal

Deck Crew prepare

Pipeline Coating Removal

Tool (PCRT)

Deploy in Water

Diver position PCRT in

pipeline and return to bell

Post removal, diver to

inspect and confirm. Diver

to grind LS Weld if reqd

Relocate PCRT to other

Hot Tap locations and

perform similar operations

Recover PCRT to deck

Coating removal opns

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Hot Tapping – Subsea

Subsea

Hot Tapping

Vessel to set up on

location

Diver survey of hot tap

location and marking

align with DMAs, deploy

lift bags, secure hot tap

clamp on the pipe, tension

the bolts, leak test

Tap drill deployed, pilot

drill the pipe, check for

leaks around

De tension the bolts,

recover drill to surface

and recover coupon

Repeat steps for 2 more

hot taps

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Spools Installation

Hot (Smart)

Tap–1

Hot (Smart)

Tap–2

Hot (Smart)

Tap–3

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Certificates

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Project Profile – Offshore Gas Spur Lines Project (Hot Taps)

Client End Client

01 May 2011

01 Oct 2011

Project Start

Project End

HD-2500

Seamac-III

Assets Deployed

Offshore

Thailand

Project Location

a Pre- and Post-

surveys

b Deck assembly

and mock-up of

tap assemblies

c 2 ea x 24” hot

taps on 42”

pipeline

Water

Depth

70m

Hot tap assembly lowered Hot tap mock-up onboard HD-2500

Spool lowered to seabed

Hot tap Drill

PTTEP

Consultant

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Kreuz Subsea is an integrated turnkey solutions provider in

IRM, Subsea Construction Services incl Hyperbaric Welding and

SURF – Unique and differentiating model

Tough and Creative

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Going beyond limits