MMO DSA Coated Titanium Tubular Anode

The tubular can be made singly or in strings, the substrates are using of seamless titanium tubes which meet standard of ASTM B338 in Grade 1 or Grade 2 Chemical Composition.

MMO tubular anodes coating are consisting of Precious Mixed Metal Oxides IrO2-x and Ta2O5, it has been proven to have a good performance within the design life. The coating thicknesses are designed base on application environment and tested by X-Ray and the life span are verifying by Acceleration life test which conducts in Saga’s test laboratory for each batch of goods.

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MMO DSA Coated Titanium Tubular Anode

The tubular can be made singly or in strings, the substrates are using of seamless titanium tubes which meet standard of ASTM B338 in Grade 1 or Grade 2 Chemical Composition.

MMO tubular anodes coating are consisting of Precious Mixed Metal Oxides IrO2-x and Ta2O5, it has been proven to have a good performance within the design life. The coating thicknesses are designed base on application environment and tested by X-Ray and the life span are verifying by Acceleration life test which conducts in Saga’s test laboratory for each batch of goods.

Tubular anode is used for the soil, fresh water, sea water and mud, or the other natural environments, it could be used alone or make it a string. Various tubular anode available as requested.

 Application

Ground beds: (deep groundbed, Shallow or open hole);

Sea Water;

Brackish Water;

Fresh Water;

Working Environment: Including soil, carbonaceous backfill, fresh water, brackish water, and seawater.

Advantages:

High current output and low electrical resistance;

Using tubular anodes can save 15-35% of install cost comparing to use other anodes;

Anode-cable assemblies are easy to handle, transport and install because of their unique flexibility;

Tubular anode cable are easy to handle, transport and install because of flexibility;

Lower cost per amp;

Guaranteed electrical contract and moisture seal integrity;

Consistently low resistance anode;

 CONSTRUCTION 

We can supply all required extras for MMO tubular anode:

  • Cable with specific length
  • Canister with carbonaceous backfill
  • Heat shrink caps
  • Ropes or suspension assembly
  • Centralizers
  • Customer’s specific requirement

PHYSICAL PROPERTIES

For Fresh water, Calcined petroleum Coke application:

Anodes Diameter Length Current Output Design Life
19mm 1200mm 7A 20 years
25mm 500mm 4A 20 years
25mm 1000mm 8A 20 years
25mm 1200mm 10A 20 years
25mm 1500mm 12A 20 years
32mm 1200mm 12A 20 years

 

For Sea water application:

Length Current Output Design Life
19mm 1200mm 43A 20 years
25mm 500mm 24A 20 years
25mm 1000mm 47A 20 years
25mm 1200mm 57A 20 years
25mm 1500mm 71A 20 years
32mm 1200mm 72A 20 years

Design current density under different electrolytes:

Electrolytes Maximum design current density A/M2 Expected Life
Carbonaceous backfill 50 20 years
Calcined petroleum coke 100 20 years
Fresh water 100 20 years
Sea water 600 20 years
Mud 100-300 20 years

Tubular Anode Cable Selection:

PVDF,HMWPE,HALAR,XLPE,PVC or KYNAR are all optional,

Saga recommends dual-insulated cable, such as PVDF/HMWPE cable for use where anodes operate in groundbeds high in chlorides – resulting in chlorines gas generation. Where chlorides are not anticipated, such as shallow vertical and horizontal surface beds, an economical cable choice is HMWPE.  The high current capacity (150 amps) and flexibility of the Exane Rig cable makes it ideal for seawater applications.

Ordering Information:

When ordering tubular anodes from Saga, please specify the following:

  • Anode Type (for example, length, diameter…).
  • Number of anodes per string.
  • Center-to-center spacing between anodes along the cable.
  • Cable tail length (above the top anode).
  • Total cable length (sum of lengths of anodes, spaces and tail).
  • Current output.
  • Number of centralizers required and hole size.

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