Coverings Systems Range

Arma-Chek

Covering Systems

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Main target:

• provide UV protection and increase the insulation life expectancy

• reduce risk of CUI

• protect insulation against mechanical impact

• protect from salt water, extreme weather conditions

Arma Chek provide exceptionally high resistance against UV, oil, chemical and extreme weather.

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Arma Chek helps to reduce the risk of CUI

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Offshore applications Marine and ship building Petrochemical industries Energy plants & storage facilities

CUI = Corrosion under Insulation / The Challenge CUI is often difficult to identify because it is hidden beneath insulation

and jacketing until it becomes a more serious problem…

how does CUI occur?- insulation covering is breached- water ingress into the insulation- water and oxygen reach the metal surface

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Corrosion – mechanism

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• wet corrosionpresence of moisture (water, humidity) containing oxygen

• galvanic corrosioncontact (also through wet insulation) of two metals with different electrode potentials;metal cladding can be affected by this type of corrosion

• Stress Corrosion Cracking (SCC) occurs in austenitic stainless steel if exposed simultaneously to the three trigger factors: - stresses within the metal - moisture - halogen ions (chloride, bromide, etc.)

• rust product: Fe(OH)2 and Fe(OH)3

• Corrosion Under Insulation (CUI) is accelerated by: - availability of oxygen - high temperature - concentration of dissolved ions.

Additional consequences of CUI

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CUI – what cost?

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• The highest incidence of leaks in the refining and chemical industries are due to CUI and not process corrosion.

• Between 40% and 60% of piping maintenance costs are CUI related.

• The problems caused by CUI caused the oil & gas industry to consider moving away from mineral wool insulation.

CUI / Corrosion Under Insulation

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Material with open cell structure

Elastomeric material with closed cell structure

External vapor barrier = concentrated diffusion resistance

Ambient airPartial pressure of water vapor

Closed cells = distributed diffusion resistance

Fibrous and Open Cell Risk

Risk of Fluid/Pressure Loss

Wicking

Galvanic Corrosion

Water Spray / Moisture 100% protection from external vapour barrier and metal cladding

Resistance to Water Vapour Diffusion

No 1 risk to industry is CUI

CUI / Corrosion Under Insulation10

Elastomeric, Closed-Cell Foam (FEF) minimise the risk of CUI

Material with open cell structure

Elastomeric material with closed cell structure

Partial pressure of water vapor

Closed cells = distributed diffusion resistance

Water Spray / Moisture 100% protection from Nitrile Rubber

External vapor barrier = concentrated diffusion resistance

Resistance to Water Vapour Diffusion

Ambient air

Arma Chek System of Insulation and Coverings 11

In ready-made versionTubes & Sheets Fittings

Insulation with covering

Arma-Chek D(AF)Arma-Chek D(NH)Arma-Chek D(CLO)Arma-Chek-Silver (AF)Arma-Chek Silver (ACE)Arma-Chek SDArma-Chek R grey (AF, NH, HT)Arma-Chek R black (AF, NH) Elbows, bends, tees

Covering Arma-Chek DArma-Chek R greyArma-Chek Silver

Accessories Arma-Chek D TapeArma-Chek Silver Tape

Arma-Chek D MastikArma-Chek Silver Mastik

Arma-Chek Systems of Insulation and Coverings 12

Metal coatingOkabell®

Non metalic coveringArma-Chek® D

Rubber coatingArma-Chek® R

2 in 1-precovered systemArma-Chek® Silver

Arma Chek System of Insulation and Coverings

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Arma-Chek D

Arma-Chek R

Arma-Chek Silver

Industria, Offshore

Heavy Industry

Manufacturing Industry

Refrigeration cooling

Heating, Ventilation, Air Conditioning

Manufacturing Industry

Clean Industry

Industrial, Offshore

Marine Manufacturing Industry

Heavy Industry

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