TEMA Type BEM 1108 Tubes Monel 400 Fixed Tubesheet Shell and Tube heat exchanger

TEMA Type BEM 1108 Tubes Monel 400 Fixed Tubesheet Shell and Tube heat exchanger

This unit is an industrial shell and tube heat exchanger (also designated as a team heat exchanger) designed in strict accordance with ASME Section VIII Div. 1 and TEMA Class R standards. The internal layout integrates an 1108-tube finned tube bundle engineered for installation in the Crude Distillation Unit Stabilizer OVHD Condenser (Tag No. W-04A/B). The mechanical design addresses severe corrosive condensation environments containing aqueous chloride and acidic hydrocarbons.

Component & ASME Material Specifications

Technical Specifications & Process Engineering

• Precision Tube Expansion Procedure: The finned tube bundle is secured into the Monel 400 tubesheet using a dual-depth torque expansion process (Depth Expansion at 40.5 mm and 60.5 mm). Tube hole layout adheres 20.25 mm triangular/square pitch pattern.

• Corrosion-Resistant Cladding & Metallurgy: All wet surfaces of the shell and pressure-retaining heads exposed to corrosive vapors utilize ASME SB-127 UNS N04400 (Monel 400) solid or clad material.

• Flow Distribution & Baffle Positioning: Integrated with heavy-duty impingement protection plates and transverse baffle plates, maintaining uniform tube support spacing at 750 mm and 753 mm.

Quality Assurance & QA/QC Specification

• Hydrostatic & Pneumatic Testing: Shell-side and tube-side pressure tests are conducted independently in accordance with ASME Section VIII Div. 1 rules 

• Nondestructive Examination (NDE): 100% Radiographic Testing (RT) applied to all full-penetration butt-welded seams; 100% Liquid Penetrant Testing (PT) applied to tubesheet-to-tube expanded/welded joints.

• Surface Coating & Finishing: Structural external carbon steel components undergo Hot Dip Galvanizing; final coating application consists of Graphite + AISI 316 / Power Graf 3 Premium high-temperature protective finish.

International Logistics & Shipping Specifications

• Lifting & Handling Attachments: scheduled for removal and plug sealing following installation into the heat exchanger shell.

• Flange Facing Protection: All ANSI B16.5 raised face flanges and female NPT couplings are fitted with heavy-duty plastic cover plates and rust-inhibitor caps for ocean freight and export transport.

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