PDA Europe 2012 Annual Conference –Istanbul, November A Famous Water Power plant in Rjukan Amund Geicke

PDA Europe 2012 Annual Conference –Istanbul, November The Rjukan Chain Google maps

PDA Europe 2012 Annual Conference –Istanbul, November The Rjukan Chain Frøystul Såheim Inlet Moflåt Dam Dale Dam Mæland Vemork Krokan Skarsfoss Outlet Moflåt Inlet Mæl Outlet Mæl Norsk Hydro

PDA Europe 2012 Annual Conference –Istanbul, November The Rjukan Chain

PDA Europe 2012 Annual Conference –Istanbul, November Construction Vemork 1911 Såheim 1915 Frøystul 1926 Moflåt and Mæl

PDA Europe 2012 Annual Conference –Istanbul, November Why is it famous?

PDA Europe 2012 Annual Conference –Istanbul, November History of the Vemork plant Among the worlds largest power plants in The Vemork factory in front of the power plant. From 1934 the factory produced heavy water

PDA Europe 2012 Annual Conference –Istanbul, November The Vemork Raid(s) Operations Grouse and Freshman, October 1942

PDA Europe 2012 Annual Conference –Istanbul, November The Vemork Raid Operations Grouse and Freshman, October 1942

PDA Europe 2012 Annual Conference –Istanbul, November The Vemork Raid(s) Operation Gunnerside, February 1943

PDA Europe 2012 Annual Conference –Istanbul, November The Vemork Raid(s)

PDA Europe 2012 Annual Conference –Istanbul, November The Vemork Raid(s)

PDA Europe 2012 Annual Conference –Istanbul, November The Vemork Raid(s)

PDA Europe 2012 Annual Conference –Istanbul, November The Vemork Raid(s) Bombing, November B-17's

PDA Europe 2012 Annual Conference –Istanbul, November The Vemork Raid(s) Sinking of D/F Rjukan Timed bomb

PDA Europe 2012 Annual Conference –Istanbul, November Back to the future… Project initiated and planning startet in Inspections and concrete sampling in 2011 and Excecution of repair and construction works during production stops in the summer months of

PDA Europe 2012 Annual Conference –Istanbul, November Design basis Operating time 20 years Low focus on visual appearance.

PDA Europe 2012 Annual Conference –Istanbul, November Scope 2012 Frøystul Såheim Inlet Moflåt Dam Dale Dam Mæland Vemork Krokan Skarsfoss Outlet Moflåt Inlet Mæl Outlet Mæl

PDA Europe 2012 Annual Conference –Istanbul, November Skarsfoss New dam Inlet Skarsfoss Demolish dam 2014 Inlet tunnel to Vemork 2 gates

PDA Europe 2012 Annual Conference –Istanbul, November Inlet Skarsfoss

PDA Europe 2012 Annual Conference –Istanbul, November Inlet Skarsfoss - Damages Freezing/thawing and Cracking caused by alcali-aggregate reaction (AAR).

PDA Europe 2012 Annual Conference –Istanbul, November Inlet Skarsfoss - assessment Coating will not stop AAR The cracking will have very small consequences the next 20 years

PDA Europe 2012 Annual Conference –Istanbul, November Inlet Skarsfoss Original scope: Mechanical concrete repairs. Polyurea on everything. Resulting scope after inspection: Mechanical concrete repairs. New structural elements.

PDA Europe 2012 Annual Conference –Istanbul, November Scope 2012 Frøystul Såheim Inlet Moflåt Dam Dale Dam Mæland Vemork Krokan Skarsfoss Outlet Moflåt Inlet Mæl Outlet Mæl

PDA Europe 2012 Annual Conference –Istanbul, November Dam Krokan- Damages Freezing/thawing and cracking caused by AAR

PDA Europe 2012 Annual Conference –Istanbul, November Dam Krokan- Damages

PDA Europe 2012 Annual Conference –Istanbul, November Dam Krokan- Damages

PDA Europe 2012 Annual Conference –Istanbul, November Dam Krokan - assessment The structure does not have sufficient load bearing capasity.

PDA Europe 2012 Annual Conference –Istanbul, November Dam Krokan - Scope Original scope: Mechanical concrete repairs. Polyurea on everything. Resulting scope after inspection: New Dam Krokan.

PDA Europe 2012 Annual Conference –Istanbul, November Scope 2012 Frøystul Såheim Inlet Moflåt Dam Dale Dam Mæland Vemork Krokan Skarsfoss Outlet Moflåt Inlet Mæl Outlet Mæl

PDA Europe 2012 Annual Conference –Istanbul, November Spillway wall - damages Leaching caused by poorly compacted concrete. Cracking from AAR Damages also downstream.

PDA Europe 2012 Annual Conference –Istanbul, November Spillway wall - assessment Concrete of varying quality. Especially in the lower parts of the wall. Difficult access downstream.

PDA Europe 2012 Annual Conference –Istanbul, November Spillway wall - Scope Original scope: Mechanical concrete repairs. Polyurea on the upstream side. Resulting scope after inspection: New concrete wall on the lower parts. Mechanical concrete repairs. Polyurea on the upstream side.

PDA Europe 2012 Annual Conference –Istanbul, November Scope 2012 Frøystul Såheim Inlet Moflåt Dam Dale Dam Mæland Vemork Krokan Skarsfoss Outlet Moflåt Inlet Mæl Outlet Mæl

PDA Europe 2012 Annual Conference –Istanbul, November Dam Mæland Måna river Inlet duct Inlet Moflåt Gate housing access to river Såheim outlet El. inst

PDA Europe 2012 Annual Conference –Istanbul, November Dam Mæland Spillway wall Dam, walls, bridge etc – Repair works on all concrete surfaces and railings etc. Coffer dam

PDA Europe 2012 Annual Conference –Istanbul, November Dam Mæland

PDA Europe 2012 Annual Conference –Istanbul, November Mæland - Bridge Damages: Rebar corrosion and freezing/thawing

PDA Europe 2012 Annual Conference –Istanbul, November Mæland - Bridge Original scope: Mechanical concrete repairs. Polyurea coating on top. Resulting scope after inspection: Mechanical concrete repairs. Polyurea coating on top.

PDA Europe 2012 Annual Conference –Istanbul, November Mæland - Pillars Damages: Cracking caused by AAR

PDA Europe 2012 Annual Conference –Istanbul, November Mæland - Pillars assessment: Small consequences of cracking on vertical surfaces. Coating will not stop AAR Possible increased risk of damages from freezing/thawing with coating. Damages have little impact on the load bearing capasity.

PDA Europe 2012 Annual Conference –Istanbul, November Mæland - Pillars Original scope: Mechanical concrete repairs. Polyurea coating. Resulting scope after inspection: Mechanical concrete repairs. Roof over horisontal surfaces. Cleaning.

PDA Europe 2012 Annual Conference –Istanbul, November Mæland - Walls Damages: Cracking caused by AAR

PDA Europe 2012 Annual Conference –Istanbul, November Mæland - Walls assessment: Small consequences of cracking on vertical surfaces. Coating will not stop AAR Possible increased risk of damages from freezing/thawing with coating. Damages have little impact on the load bearing capasity.

PDA Europe 2012 Annual Conference –Istanbul, November Mæland - Walls Original scope: Mechanical concrete repairs. Polyurea coating. Resulting scope after inspection: Mechanical concrete repairs. Cleaning with ultra high pressure. Removing old coating.

PDA Europe 2012 Annual Conference –Istanbul, November Mæland - Baseplate Damages: Cracking caused by AAR and Freezing/thawing

PDA Europe 2012 Annual Conference –Istanbul, November Mæland - Baseplate assessment: Risk of full disintegration of baseplate within the next 20 years. The baseplate is critical for the function of the sealing injection screen. Repair costs will be almost as high as the construction cost of a new slab.

PDA Europe 2012 Annual Conference –Istanbul, November Mæland - Baseplate Original scope: Mechanical concrete repairs. Resulting scope after inspection: New Baseplate

PDA Europe 2012 Annual Conference –Istanbul, November Mæland - Ducts Damages: Cracking caused by AAR

PDA Europe 2012 Annual Conference –Istanbul, November Mæland - Ducts assessment: Small consequences of cracking on vertical surfaces. Coating will not stop AAR Possible increased risk of damages from freezing/thawing with coating. Damages have little impact on the load bearing capasity.

PDA Europe 2012 Annual Conference –Istanbul, November Mæland - Ducts Original scope: Mechanical concrete repairs. Polyurea coating. Resulting scope after inspection: Mechanical concrete repairs. Cleaning with high pressure.

PDA Europe 2012 Annual Conference –Istanbul, November Pictures 2012 Downstream wall Mæland

PDA Europe 2012 Annual Conference –Istanbul, November Pictures 2012 Core from spillway wall Såheimstoppen.

PDA Europe 2012 Annual Conference –Istanbul, November Pictures 2012 Pillar Mæland.

PDA Europe 2012 Annual Conference –Istanbul, November The new Dam Krokan

PDA Europe 2012 Annual Conference –Istanbul, November Downstream wall Mæland Why don't we coat this?

PDA Europe 2012 Annual Conference –Istanbul, November Pro coating Appearance

PDA Europe 2012 Annual Conference –Istanbul, November Against coating Massive structures not depending on reinforcement. The opposite side may not always be dry. Risk of freezing/thawing damages behind coating. Compressive strength of concrete increases with AAR. Structural integrity may not always be intact.

PDA Europe 2012 Annual Conference –Istanbul, November Can you coat this?