DNV Tanks

The offshore industry has numerous needs for fluid transportation during operations. Companies must ensure safety and environmental caution when transporting hazardous fluids. In doing so, it is important that operators use equipment that complies with the latest standards and regulations. Gautheirs’ Offshore Tanks are designed to meet the requirements of IMDG, DOT, ISO, and DNV regulations. The crash frame and base structures are built in accordance to DNV 2.7-1 with some models being ISO approved. The worldwide offshore industry has accepted DNV 2.7-1 as the international standard for offshore CCU’s(Cargo Carrying Units). DNV 2.7-1 was developed by the Norwegian standards organization Det Norske Veritas. DNV 2.7-1 was first published in 1986 and was quickly recognized as the offshore industry standard. The code is a rigorous set of material requirements, manufacturing procedures, and maintenance rules that ensure safe cargo transport in the offshore environment.

The standard specifically addresses:

MATERIALS

• DESIGN
• PRODUCTION
• MARKINGS
• LIFTING SETS
• PERIODIC EXAMINATIONS, TESTS AND REPAIRS

Gauthiers Oilfield Rental, LLC is your single source provider for all DNV 2.7-1 Tanks. In addition to the standard sizes, Gauthiers can provide custom size units and modifications to meet your needs.

APPROVALS

• DNV 2.7-1
• ISO
• IMDG
• ADR/RID

DESIGN TEMPERATURE

• Minus 20C to plus 55

MATERIAL

• Vessel-316 S/S
• Frame-Carbon Steel
• Skirt, Floor, Fork Pockets-304 Stainless Steel
• Shell Thickness-4.28mm nominal

FRAME EXTERIOR FINISH

• Shot blasted
• Zinc rich epoxy primer-75 microns
• Polyurethane enamel-50 microns

WALKWAY/GRATING

• Mild steel galvanized walkway
• Lid opens approximately 60 degrees

DESIGN CODE

• Vessel-ASME VIII Division 1
• Frame-DNV 2.7-1

FITTINGS

• Fort valve or Perolo in 316 contract parts
• Manlid-1 off 460mm 6 point hinged
• Safety Relief-1 off 2 1/2" P/V with vent button
• Airline-1 off 3/4" Ball Valve with cap and chain
• Bottom Outlet-1 off 3 closure discharge valve compromising a 3" to 2" emergency footvalve extended to a 2" ball valave terminated with a 2" cap and chain and with an intergral 3/4" sampling valve with ball valve and terminated with 3/4" cap and chain
• Documents Box-1 off tubular documents box (plastic)

OPTIONS

• 3 coat paint system
• Additional approvals
• Dipstick
• Drip tray
• Electrical heating
• Fall arrestor
• Insulation
• Ladder
• Level gauge or level gauge provision
• Lined/coated tank
• Re-circulation point
• Spare connections