AwSV-Compliant Planning of a WHG Tank Farm and Process Plant

Auditable AwSV concept, retention volume, sealed surfaces, FD concrete and execution details

For a tank farm and process plant, INOPCO prepared an auditable AwSV concept focusing on process equipment, fire and explosion protection, construction execution and building design.

The planning included the definition of protection objectives, system structuring of the relevant plant areas, calculation of retention volumes and penetration depths, selection of suitable coating and joint systems, and transfer of the results into execution planning, bills of quantities, tendering and contract award.

  • AwSV concept with auditable technical documentation
  • Retention volume, filling level simulations and leakage scenarios
  • Sealed surfaces, FD concrete, coating systems and joint planning
  • Execution planning, bill of quantities, tendering and contract award
AwSV concept for a WHG tank farm and process plant

Plant Type

WHG tank farm and process plant

Protection Objective

AwSV-compliant retention and impermeability

Verification

Retention volume, penetration depths, sealed surfaces

Result

Concept, details and bill of quantities

System structuring of sealed surfaces and retention areas according to AwSV

System Structuring of AwSV-Relevant Areas

INOPCO described the plant areas according to drainage, impoundment and retention surfaces, low points, containment areas, containment trays, underground pipes, channels, gutters, pump shafts as well as filling and transfer areas.

This created a transparent basis for the AwSV concept, verification, execution planning and later construction execution.

Key Areas of the AwSV Concept

Process equipment, fire protection, construction execution and building design as an integrated safety concept

Process Equipment and Operation

Analysis of media, materials, tanks, units, pipework, nozzles, process technology, safety equipment, overfill protection and leakage detection systems.

  • Description of operating mode
  • Assessment of leakage scenarios
  • Coordination with operation, maintenance and process equipment

Fire and Explosion Protection

Consideration of fire protection requirements relating to retention, extinguishing water, grounding, lightning protection and safe execution.

  • Calculation of required extinguishing water volumes
  • Consideration of grounding and lightning protection
  • Coordination of technical and approval-related requirements

Construction Execution and Quality Assurance

Definition of requirements for construction execution, ongoing inspections, tightness verification, approvals and certificates.

  • Inspection and tightness verification
  • Approvals and certificates
  • Specifications for construction execution and documentation

Building Design and Constructive Details

Planning of sealed surfaces, layer build-ups, joints, penetrations, containment areas and retention zones with approved materials.

  • Dimensioning of sealed surfaces and retention areas
  • Joint layout, joint plates and penetration details
  • Definition of approved construction materials and application procedures

Part 1: Analysis, Protection Objectives and AwSV Concept

Requirements and Approval Scope

Review and analysis of requirements, approval scope and affected plant components.

Protection Objectives and Construction Products

Identification of protection objectives and derivation of requirements for steel, concrete, floor drains, joint plates and penetrations.

System Structuring and Verification

Preparation of diagrams and sketches as well as calculation of retention volumes and penetration depths.

Part 2: Execution Planning and Tendering Basis

Transfer into Execution Planning

Transfer of the AwSV concept results into detailed execution plans with material and processing specifications.

System Solution and Detail Planning

Planning of FD concrete, DIBt-approved coating systems, joint plate systems and constructive AwSV details.

Bill of Quantities and Tendering Basis

Preparation of bills of quantities for coating systems, coating works and concrete works with FD concrete and joint plate systems.

Filling level simulation to verify the retention volume of an AwSV facility

Verification and Technical Implementation

The retention volume was verified using filling level simulations. Depending on the media used, a DIBt-approved coating system was specified for the tank farm. The floor slab of the process plant was designed as FD concrete.

The planning considered the requirements of the DAfStb BUmwS guideline and DWA-A 786. Verification included crack width limitation, system structuring, material selection and the definition of suitable joint and sealing systems.

Results

  • Overview of relevant regulations and coordination results
  • AwSV concept with protection objectives, system structuring and verification
  • Calculation of retention volumes and penetration depths
  • Execution details, system documentation and bill of quantities

Are you planning a tank farm, process plant or AwSV-relevant sealed surfaces?

INOPCO supports AwSV concepts, building design, execution planning, retention volume, material selection, bills of quantities, tendering and verification.
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