Installing a welded plate heat exchanger means protecting its pressure boundary while giving the plant a workable operating and maintenance arrangement. Correct supports, pipe alignment, expansion allowance and instrument placement are as important as the exchanger's thermal design.
“Welded plate heat exchanger” covers several arrangements. A HT-Bloc welded plate heat exchanger has a different enclosure and channel-access route from a TP welded plate heat exchanger or a wide-gap welded plate heat exchanger. Not every welded unit has wide channels, removable covers or the same installation orientation.
Use the approved general arrangement, nameplate, manual and project specifications for the delivered tag. Installation planning should refer to those documents rather than a generic product-family maximum.
| Interface | What to confirm before lifting |
|---|---|
| Foundation or skid | Support location, operating loads, level and anchoring requirements |
| Lifting route | Approved lifting points, equipment weight and center of gravity |
| Piping | Nozzle location, permitted loads, independent supports and expansion allowance |
| Maintenance | Cover removal, core access, tools, drainage and replacement route |
| Services and instruments | Vents, drains, sensors, isolation and any package utilities |
Inspect the delivered equipment and documentation against the packing list and approved scope. Record transport damage or discrepancies before installation proceeds. Equipment nozzles should not be treated as lifting points unless explicitly designed and approved for that purpose.
Follow the engineered lifting and positioning plan. Verify the support arrangement and orientation against the drawings. A fixed and sliding support, where part of the design, must remain able to perform its intended expansion function.
Do not assume that every exchanger must be installed horizontally or made level in the same way. Orientation can affect drainage, distribution and the specific equipment supports.
Pipes should be supported and aligned so that their weight, thermal expansion and assembly forces remain within the approved nozzle-load limits. Pulling misaligned piping into place using flange bolts can transmit loads into the exchanger.
Use the specified flange faces, gaskets, fasteners and assembly method. A sealant suitable for one connection should not be applied to another joint simply because the equipment has a welded core.
Confirm measurement locations for temperatures, pressures and flow. Pressure-drop monitoring needs a clear boundary, with readings that can be compared against the exchanger's design data.
A bare exchanger is a passive pressure and heat-transfer component. Electrical checks apply to the pumps, instruments, actuators or controls included in the actual package; they should not be invented as functions of the exchanger core itself.
Complete the required inspection, flushing, venting and integrity checks before process introduction. The approved procedure defines how the circuits are filled and brought to temperature and pressure, including any differential-pressure or ramp restrictions.
Start-up and shutdown can produce more demanding temperature gradients than steady operation. Coordinate the valves, controls and receiving systems so the exchanger remains within its permitted conditions during the transition.
Confirm the equipment tag, material and documentation supplied.
Record both-side flows, inlet and outlet temperatures and pressure drops.
Verify required control and alarm functions within the agreed package scope.
Compare the achieved duty with the approved operating or acceptance case.
Resolve discrepancies and retain the signed handover records.
Monitor changes in duty and hydraulic resistance at comparable conditions. Review upstream screening where solids are present and retain access to the selected cleaning route. Materials and cleaning chemistry must remain compatible with the actual service; no single alloy or cleaning interval fits every welded exchanger.
For installation assistance, SHPHE service support can review the equipment identification, drawings, interface questions and operating data. Include photographs and the specific installation issue so the advice can be matched to the supplied configuration.
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