Chart Cryonorm Cryogenic Systems & Vaporizers

Identify the installed unit

Photograph the complete nameplate so that the manufacturer, model, serial number and remaining technical lines are readable. Add a general view of the installation and a close view of the component location. Separate the installation identification from the markings on the part itself.

A control panel, valve or pump can have a different serial number from the vaporizer. If a manual is available, attach its cover and the bill of materials with the relevant item marked.

For an electric heater, include the wiring diagram and supply designation. For a tube bundle, include dimensions, connection details and the drawing revision. Describe previous modifications and identify the current as-built documents.

Leave unreadable information unknown and label an assumed model as an assumption. State the quantity required and whether the inquiry concerns a repair, planned spare holding or a modification. These details help identify which document should be checked before a component is proposed.

Define the equipment duty

For a complete system, provide the process fluid and composition, normal flow, short peak flow, and inlet and outlet temperatures. Give operating and design pressures with units. State the reference conditions used for gas flow measurements.

A load profile is useful when consumption varies during the day. For standby equipment, describe the condition that starts the unit and the expected operating duration. Keep measured site data separate from preliminary design assumptions.

List available electricity, steam, water and fuel gas, together with the installation space. Water-heated equipment needs the utility circuit conditions. Ambient units need the outdoor site conditions. Marine equipment needs the vessel project requirements.

Do not use the rating of a neighbouring installation as the required duty. List missing inputs separately so that the quotation identifies which conditions are agreed and which require a reply from the plant operator or project designer.

This also gives a clear basis for comparing equipment configurations.

Specify oxygen and cryogenic service

Identify every fluid that contacts the requested component. Similar appearance does not establish suitability for oxygen, hydrogen or another cryogenic service. Attach the material designation and the cleaning and packaging requirements stated in the installation documents.

For a seal, provide its drawing, seating dimensions and installed specification. For a valve assembly, include the circuit, body markings, actuator details and available position feedback. Separate operating requirements from the condition in which a removed part was found.

Do not derive cleaning methods, test pressures or maintenance intervals from a general product overview. Those activities follow the actual installation documentation and the operator procedures.

For selection, we distinguish requirements taken from your documents from characteristics still to be confirmed for a proposed item. If an alternative is requested, identify who approves its use and which characteristics must match.

This keeps the suitability decision visible before ordering and gives the project engineer a defined comparison to review.

Plan a replacement or modification

Attach the original circuit, removed component designation and reason for the inquiry. State whether the task is to repeat the installed configuration or change capacity, utilities or control. For a fan module, show the vaporizer arrangement and space available.

For automatic changeover, include the two vaporizer banks, valve information and existing control signals. For a gas heater, specify the required outlet temperature and available electric supply. Identify equipment that must remain in service during the project.

A component quotation does not replace a plant design assessment. A change in flow can affect piping, neighbouring equipment and utility demand. List the interfaces that must remain unchanged and identify the party responsible for checking them.

The requested scope can distinguish components, documentation and services when those items are agreed. A clear boundary lets the customer pass the proposed configuration to the project designer and check mechanical, electrical and process connections before placing an order.

Equipment inquiry scope

Send a position list with quantities, application and supporting documents. For a complete project, define the supply boundary from inlet to outlet and identify the tanks, controls and connecting systems included in the request.

For spares, use one line for each component and matching item numbers on the general drawing. Provide the responsible engineer contact for technical questions and the purchasing entity details needed to prepare the quotation. State the required document language and the destination of the shipment.

Documentation and destination

An inquiry can cover one component or an agreed equipment package. If your company uses a purchasing template, attach it with the technical specification. Mark document revisions and identify the version to be used.

List proposed changes separately from the original request, so the final position list can be checked before ordering. For export packing and transport, give the receiving point, handling restrictions and any project requirements.

Commercial and technical responsibilities should be identifiable in the agreed order documents.