Pass arrangement
Prepare flow path sketches for the pass arrangement review. Identify the circuits and mark the intended inlet and outlet connections on the drawing. Request the corresponding arrangement for the proposed exchanger, and ask the supplier to distinguish each alternative configuration so the buyer can compare it with the project piping requirement. Ask how should the requested pass arrangement be shown in the enquiry?
Mark every circuit inlet and outlet on the buyer piping sketch and identify the equipment connected beyond each boundary. Request a proposed pass arrangement with matching connection references. Ask the supplier to explain any difference between the requested circuit path and the proposed arrangement, and compare the drawing with the installation space before approving the configuration.
Port placement
Prepare inlet for the port placement review. Describe the information being requested and identify the equipment concerned. Request the corresponding technical document for the proposed item, and ask which specific parts of the buyer requirement are addressed so the response can be compared with the intended purchase scope. Ask which connection locations need confirmation before layout approval?
Request or submit outlet positions and piping drawing, according to the proposed purchase scope. Mark the equipment boundaries and connection locations on the project drawing. Request the corresponding interface drawing for the proposed exchanger, and compare its orientation and connection identification with the buyer piping plan before requesting clarification of any changed interface.
Operating cases
Prepare duty schedules for the operating cases review. Identify the relevant project operating cases separately in the requirement schedule. Include the circuit or equipment references for each case, and ask the supplier to state which proposed configuration its response addresses before comparing that response with another proposal for the same duty. Ask which operating cases should be assessed for the proposed configuration?
Request or submit changing load descriptions, according to the proposed purchase scope. Describe the information being requested and identify the equipment concerned. Request the corresponding technical document for the proposed item, and ask which specific parts of the buyer requirement are addressed so the response can be compared with the intended purchase scope.
Configuration record
Prepare approved flow diagram for the configuration record review. Identify the circuits and mark the intended inlet and outlet connections on the drawing. Request the corresponding arrangement for the proposed exchanger, and ask the supplier to distinguish each alternative configuration so the buyer can compare it with the project piping requirement. Ask how should the agreed arrangement be identified in the purchase documents?
Request or submit quotation annotations, according to the proposed purchase scope. Name the requested item and distinguish the main equipment from separately requested components. Ask the supplier to identify the corresponding items in the proposal, and confirm minimum order quantity and lead time before ordering against the agreed configuration and receiving requirements.
Multi pass heat exchanger: documents to request
| Ask about | Request with your inquiry |
|---|---|
| How should the requested pass arrangement be shown in the enquiry? | Flow path sketches and circuit labels |
| Which connection locations need confirmation before layout approval? | Inlet and outlet positions and piping drawing |
| Which operating cases should be assessed for the proposed configuration? | Duty schedules and changing load descriptions |
| How should the agreed arrangement be identified in the purchase documents? | Approved flow diagram and quotation annotations |