VSE™ Anode (Vaulted Seawater Envelope)
Impressed current cathodic protection for shallow water

General Info

The VSE Anode system is designed to allow optimal operation of Mixed Metal Oxide activated titanium anode elements in saline mud, sand or silt burial conditions. This is achieved by providing a natural water envelope around the anode elements. Current is discharged from the underside of the anode sled. This type of anode material, as with all other types of impressed current anode, does not work predictably in saline mud exposure. The sled is designed to operate in harsh environments. Artificial frond arrays along the sides of the sled are designed to encourage self-burying, and a sacrificial steel plate is attached to the bottom to prevent damage to the screen during installation. This plate will corrode away within 2 years of installation, by which time the sled will be settled in place.

Anode elements are titanium tubes with triple coated MMO coating.

Titanium Substrate	ASTM 338 Gr. 2 - 1.25” Tube 0.035” WT 48” Long
	Two tubes used 1 @ 48 “ and 1@ 42”
Coating	IrO2/Ta2O5 - Tri-Coat Mixed Metal Oxide
Center Connection	Internal tin compression connector, resistance ≤ 0.001 Ohm.
	Sealed with proprietary resins, tested for integrity with helium gas.
Interconnect	Cable #2 AWG Exane Insulated Flexible Locomotive Cable, with Teflon over sheath.

Main Supply Cable - 600/1000V rated for direct burial.

Conductor	37 / 2.03 mm plain annealed copper 120 mm2
Insulation	HMWPE 2.5 mm RT 19.4 mm OD
Bedding	PVC Type 9 1.2 mm RT 22.1 mm OD
Armor	1.6 mm Galvanized Steel Wire
1st Layer	LHL 42 Wires
2nd Layer	RHL 47 Wires
Outer Sheath	HMWPE 1.2 mm RT 31.3 mm OD
Extra Abrasion Sheath	Steel reinforced rubber hose to 50.0 mm OD (First 16 Meters Only)
Resistance @ 20°C	0.151 Ohm / 1000 M
Minimum Bend Radius	450 mm
Anode Tether	20 mm Wire Rope Dry Galvanized with hot dip galvanized clips and thimbles.
Bend Stiffener	Steel reinforced heavy-duty rubber.

Anode Vault

Material	ASTM A36 Steel – Welded Construction
Coating: Seawater Envelope	Teflon loaded Vinyl Ester, One Coat 35-45 mils DFT
Coating: Surface Prep.	SSPC SP5 or NACE 1 White Metal, Anchor Profile 4 mils minimum.
Coating:Rest of Vault (internal)	Bare Steel / Zinc Anodes
Coating: Vault External	Shop Primer / Zinc Anodes
Cathodic Protection	2 x 48lb and 2 x 24lb Zinc Hull Anodes External, 2 x 24lb Zinc Hull Anodes Internal
Vault Primary Shield	Teflon Faced CPVC Composite.
Anti-Scour Fronds	Nylon 17” 63 Fronds / sq.ft.
Filters: Footprint	96” x 41” x 3” Vinyl Ester Grating with 12 oz Polypropylene Felt Filter.
Filters: Gas Vent	96” x 5” x 1.5” Vinyl Ester Grating with 12 oz Teflon Felt Filter.
Sacrificial Base Plate	ASTM A36 Steel Plate 40” x 96” x 0.25”
Side Ballast	80 lb Concrete

Overall Dimensions

Length	118” (2997 mm)
Width	60” (1524 mm)
Height	18” (457 mm) Excluding Anchor Feet
Height	30” (762 mm) With Anchor feet
Weight: VSE Sled	1500 lb (680 Kg) Without Cable
Weight: Main Power Cable	Approx 2 lb (0.9 Kg) per foot
Weight: Shark Hose main, Power cable protector	0.6 lb (0.27 Kg) per foot
Weight: Shark Hose main, Ballast Cement	160 lb (72.5 Kg)