Products · Flare
To establish the project design basis for “Liquid Seal Drums”, confirm “Seal liquid and protection head” and its inputs: Specify seal-liquid type/conditions, pressures across the seal, required head basis, evaporation/contamination, filling, drain and overflow needs. Final values, supply limits and acceptance criteria are recorded in approved engineering documents; no generic capacity or catalogue guarantee is assumed.
From project definition to delivery
Engineering of Liquid Seal Drums concentrates on credible relief and blowdown loads, liquid disengagement, radiation, dispersion, noise, smokeless capacity, sealing, ignition reliability and safe plot-plan separation. The selected configuration is verified against normal, minimum, start-up, shutdown and credible upset cases, then checked for operability, maintainability, energy use, process safety and site interfaces before the design is frozen.
The design basis for Liquid Seal Drums is defined from service data, design conditions, and battery limits. For this equipment, Seal liquid and protection head and Seal liquid and protection head must be completed in the datasheet and design documents; performance values and guarantees are set only after the project basis is approved.
Materials, corrosion allowance, sour-service requirements, piping classes, nozzle design, insulation, coating, supports and maintenance access are coordinated with the actual process conditions and project code hierarchy.
Control philosophy, alarms and trips, cause-and-effect logic, interlocks, start-up and shutdown sequences, safe depressurization and operator access are developed consistently from the P&IDs through functional testing.
Battery limits, tie-in points, structural loads, cabling, instrumentation, drains, vents, access routes, lifting envelopes and shipping constraints are controlled through coordinated models and interface drawings.
From project definition to delivery
Proposal quality depends on complete input data and an explicit acceptance basis. The following lists provide a practical starting point and are completed during technical clarification.
Technical Datasheet
The numeric limits below are from the Indian refinery / gas-processing T4S regulation. They are not universal API limits and must not be applied outside the covered jurisdiction without review.
| Parameter | Published value | Reference basis | Applicability / limit |
|---|---|---|---|
| Seal-water submergence | Minimum 100 mm; standard-practice maximum 300 mm | PNGRB regulation states a 100-mm minimum recommendation and a 300-mm standard-practice maximum. | Covered Indian refinery/gas-processing facilities only; allowable header backpressure and purpose of the seal govern the selected depth. |
| Inlet dip-leg extension | At least 0.3 m below water level | The same regulation specifies this minimum submergence to reduce air ingress when hot vapors cool. | Check pressure/vacuum cases, seal-liquid density, thermal cooldown, and available header pressure margin. |
| Drum cross-sectional area | At least 4 × inlet-pipe cross-sectional area | Jurisdiction-specific regulatory minimum for the covered seal drum. | Do not use as the complete drum-sizing rule; slugs, disengagement, level control, liquid inventory, and hydraulic loads remain to be checked. |
| Minimum seal-drum design pressure | 3.5 kgf/cm²(g) | Minimum stated in the same India-specific regulation. | Regulatory design-pressure clause; confirm current amendment, equipment scope, and governing vessel code before use. |
Delham Engineering
Send the available process data, battery limits and expected document list for a technical proposal. The engineering team will identify missing information through a structured clarification register.
