02 acces_internal corrosion monitoring

8/10/2019 02 Acces_Internal Corrosion Monitoring

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INTERNAL CORROSION

MONITORING SYSTEMS

RETRACTABLE SYSTEM

COUPONS

SUPPORT EQUIPMENT

Adress: Km 2 Va Refugio,

Sede UIS, Guatiguar,

Piedecuesta, Santander.Colombia.

Phone Number: (57) (7) 6550807 / 6550809

Fax: (57) (7) 6550808

Mobile Number: 320 493 3263

E-mail: [email protected]: http://corrosion.uis.edu.co


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The low pressure screwed retractable system

allows access to pressurized systems in order

to intervene monitoring points under the

following operation conditions:

*Pressure: 1000 psi *Temperature: 250C

With the installation of the low pressuresystem various coupons and coupon holders

can be easily manipulated.

The low pressure retractable system is made

of AISI-SAE 316 Steel under the standard

NACE MR-01-75

For operation:

Requires the use of the Retractor System

For pressures lower than 100 psi the

T-Handle can be used.

LOW PRESSURE SCREWED RETRACTABLE SYSTEM

FOR INTERNAL CORROSION MONITORING

RETRACTABLE SYSTEM


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RETRACTABLE SYSTEM

LOW PRESSURE FLANGED RETRACTABLE SYSTEM


The low pressure flanged retractable system

allows access to pressurized systems in order to

intervene monitoring points under the



With the installation of the low pressure system

various coupons and coupon holders can be

easily manipulated.

The low pressure retractable system is made of

AISI-SAE 316 Steel under the standard NACE

MR-01-75

For operation:

Requires the use of the Retractor System

For pressures lower than 100 psi the

T-Handle can be used.


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1.1

1.2

3

2.5

2.4

2.3

2.2

4

2.1

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RETRACTABLE SYSTEM

SECURITY SYSTEM AND SYSTEM COMPONENTS

# Part Material/DimensionOperational Conditions

Pressure Temp.1 Retractable System 1000 psi 250 C

1.1 Upper Platen Stainless Steel

1.2 Lower Platen Stainless Steel

1.3 Threaded rod Stainless Steel

2.1 Lock Nut Stainless Steel

2.2 Packing Nut Stainless Steel

2.3 Splint Bronze

2.4 V-Packing PTFEBuna N

2.5 Box Stainless Steel

3 Nipple NPT sch 80 / 14 Coupon Holder Stick Stainless Steel / 45


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The high pressure retractable system allows

access to pressurized systems in order to

intervene monitoring points under the



With the installation of the low pressure

system various coupons and coupon holders

can be easily manipulated, besides a

biocoupon holder can be integrated in the

system.

The high pressure retractable system is made

of AISI-SAE 316 Steel, under the standard

NACE MR-01-75

RETRACTABLE SYSTEM

HIGH PRESSURERETRACTABLE SYSTEM



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RETRACTOR SYSTEM

The Retractor System is a mechanical device

made of SAE 4140 Steel and aluminum, under

the standard NACE MR-01-75

Is a tool used for removal and insertion of

coupons easily and securely during high

temperatures procedures.

This system can be joined with both the box of

the retractable system and the coupon holderstick.

SUPPORT EQUIPMENT


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SUPPORT EQUIPMENT

COUPON AND BIOCOUPON HOLDER CAP

Biocoupons exposure system

configuration

Laminar coupons exposure system

configuration

The system for the pitting corrosion assessment allows to calculate maximum corrosion

rate of a bare metal inside industrial systems.

This device can be placed inside lines or storage tanks. It also requires exposure of

metallic probes that are strategically located and have certain surface preparation in

order to facilitate the deposition and establishment of microorganisms communities

SYSTEM FOR THE PITTING CORROSION ASSESSMENT


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COUPONS FOR CORROSION MONITORING

The main purpose of the coupons designed by the CIC is

the corrosion rate monitoring by gravimetric method.

There are different coupon sizes and geometric

distributions for the corrosion monitoring through

electrochemical probes.

The coupons fabrication material depends on the user

needs or the environment aggressiveness, it is chosen

taking into account the pipe system, particular interest

or by advise of the CIC.

The coupons are delivered inhibited, wrapped in paper

and inside a waxed paper envelope and are individually

vacuum packed.

Corrosion Rate:

Gravimetric coupons provide a quantitave measure ofcorrosion rate inside a monitoring system, in some

cases the morphological deterioration can be associated

to an specific agent.

FLUSH DISCGRAVIMETRIC EMBEDDED

COUPONS

EROSION


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COUPONS

COUPONS FOR CORROSION MONITORING

COUPON DESCRIPTION DIAGRAM TYPE DIMENSIONS

Gravimetric

Metallic test tube that allows

material loss evaluation due to

homogenous deterioration

exposure inside a pipeline.

Embedded

The metallic test tube has holes

with different sizes. The scalespresented in pipelines is the object

of study with this coupon type,

situation that can be referenced

with the holes of the coupon.

Welding

Used for preferential corrosion

studies due to the dissimilarity of

the materials belonging to the

welding joint. The area of study is

nearby the welding spot.

Flush Disc

The coupon is located so it

simulates the pipe wall. It is also

used in multiphase flow, allowing

damage differentiation on each

phase thanks to a cascade

distribution.

Disc 7/8" x 1/8" x 5/16"

Electrochemical

Electrode used during

electrochemical tests. Fabricated

with the material needed forstudy, which works as an open

circuit electrical terminal. The

electrode is excited by an applied

sign, in that way there can be

obtained an answer from system.

Cylindrical 1 x 3/16x R 4-40

Side Stream

Revolver

3" x 3/4" x 1/8"

3" x 1/2" x 1/16"

Laminar

Biocoupon 5/16"

The biocoupon consists of a

metallic piece with a surface finish

of 0,003mm thickness. It is

encapsulated inside an electrical

insulating. It is is supposed to

degrade by pitting corrosion

and/or by biofilm formation.


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Address: Km 2 Va Refugio, Sede UIS, Guatiguar,

Piedecuesta, Santander.

Colombia.

Phone Number: (57) (7) 6550807 / 6550809

Mobile Number: (57) (7) 320 493 3263

Fax: (57) (7) 6550808

E-mail: [email protected]

Website: http://corrosion.uis.edu.co

/corporacioncorrosion

/corporacioncorrosion

02 acces_internal corrosion monitoring

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