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Overview

Forties Alpha and Delta - condensate warmers and gas coolers

Allards International undertook the thermal design, mechanical design, engineering, expediting, procurement, fabrication, and testing and inspection of two gas coolers, together with two condensate warmers - shell and tube heat exchangers.

These heat exchangers were designed for operation on the Forties Alpha and Delta platforms, operating for Apache North Sea Ltd.

Within a timeframe of around 6/7 months for supply of all units, Allards International completed the ship motion and acceleration analysis, thermal and mechanical design followed by procurement and fabrication of the four heat exchangers.

The heat exchangers were supplied fully painted, ready for installation offshore. The company delivered the completed package to Aberdeen.

The final weight of condensate warmers was 1200kg and the gas coolers 4900kg.

• Scope of work: condensate warmer (2 off)
• TEMA type: NEN 337-2500
• Materials: carbon steel shell and channel; stainless steel tubesheet and tubes
• Design pressure bar(g): shell side 50; tube side 50
• Design temperature min/max (C): shell side -46/50; tube side -46/50
• Design code and regulations: PD5500:2003, TEMA R, PED 97/23/EC
• Number of tubes: 112

• Scope of work: gas cooler (2 off)
• TEMA type: BFU 700-4000
• Materials: carbon steel shell and channel; stainless steel tubesheet and tubes
• Design pressure bar(g): shell side 50; tube side 50
• Design temperature min/max (¡C): shell side -40/40; tube side -50/50
• Design code and regulations: PD5500:2003, TEMA R, PED 97/23/EC
• Number of tubes: 626

Key Data

ClientApache North Sea Ltd
ConsultantAtlas Engineering UK Ltd
ContractorAllards International Ltd
Project locationNorth Sea; UK
Date (year)2007
ServicesDesign; Fabrication; Inspection; Testing
TechnologiesCoolers; Heat exchangers; Heaters
SectorOffshore; Oil and gas