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Al Shirawi Equipment Company L.L.C

Frame for 415 BBL Baraswift Mixing Tank

Pressure/Vacuum Relief Valve (PV Valve) · PV Valves & Vent Systems

Class-certified type (DNV register) · technical data sheet not yet verified​​⁠​‍​‍​‌⁠‍⁠⁠​​​⁠⁠​⁠

Frame for 415 BBL Baraswift Mixing Tank by Al Shirawi Equipment Company L.L.C. DNV TA certificate TAS000046J.

Inspection

Inspector Detail

Common issues

  • Corrosion of structural members, especially at the base and in way of water traps
  • Cracking or fatigue at welded joints, particularly around lifting points and mounting brackets
  • Loosened or corroded deck-securing/lashing points
  • Coating breakdown accelerating corrosion at the frame-to-deck interface
  • Damage to lifting points from repeated handling or overload

Inspection checklist

  • Visually inspect all structural members and welds for cracks, corrosion and deformation
  • Check lifting points for wear, cracking and correct certification marking
  • Verify the deck-securing arrangement (bolts, lashings, chocks) is intact and correctly tensioned
  • Inspect coating condition and touch up areas of breakdown
  • Confirm the frame is free of tank contents or spillage that could accelerate corrosion
  • Check alignment of the tank on the frame and that mounting brackets are not deformed

Service intervals

Visual structural inspectionat each use or periodically per the SMS, commonly every 3-6 months for equipment in regular service
Coating touch-up/maintenanceas needed based on visual condition
Lifting point thorough examinationper statutory/class requirement for lifting appliances, commonly annually - confirm against class/flag requirement

Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.

Critical spares

  • Securing bolts, nuts and lashings of the correct grade and size
  • Coating/paint system matched to the original specification
  • Corrosion-resistant washers/shims for mounting points
  • Replacement lifting point assembly, sourced and certified to the original design rating
  • Corrosion protection inserts or anodes, if fitted at the frame-to-deck interface

Safety

  • Lifting point overload or failure if used beyond its certified safe working load
  • Crush hazard during handling and positioning of the frame/tank assembly
  • Slip/trip hazard from tank content spillage on and around the frame
  • Structural failure risk if corrosion or weld cracking is not addressed before further lifting or loading

Class survey

Where the frame incorporates certified lifting points, class/flag typically requires periodic thorough examination and load testing per lifting appliance requirements; general structural condition is otherwise assessed under routine equipment survey.

Classification

DNV type approval

Listed in the DNV Approval Finder at the time we recorded it. The certificate is issued by DNV, not by us; check its current status at DNV.

CertificateTAS000046J
Open the certificate at DNV
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