P & I Design Ltd software

HAZOP

This program combines the flexibility of a database for information sorting, retrieval and analysis, with the ease of data entry of a word processor. It will allow the user to run more efficient and effective Hazard and Operability Studies whilst at the same time removing the significant administrative overhead involved.

ENVIROKIT

P & I Design introduces a comprehensive suite of software to provide designers and plant operators with the capability to meet the ever-increasing reporting demands of environmental legislation. Programs are stand-alone with individual report format and User Manuals with supporting documentation and theory.

LOPA

Layer of Protection Analysis is a technique for a simplified method of risk assessment. It is typically used as a screening tool and operates by reviewing an identified hazardous event and attaching a risk tolerance criteria to that event. The initiating event frequency is then calculated together with all layers of protection that are in place to prevent hazardous event, the result identifies if additional protection is required, such as safety instrument systems. LOPA is normally used as an order of magnitude analysis but can be developed and refined with the use of additional risk studies such as HEART (Human Reliability Assessment using the Human Error Assessment and Reduction Technique). P & I Design have developed software to assist in conducting LOPA`s and have also been extensively involved with the HSE - BSTG (Buncefield Standards Talk Group) and PSLG (Process Standards Leadership Group) in advancing the techniques and the use of LOPA by developing guidelines for its use.

Chemstation Products

CHEMCAD

CHEMCAD represents the basic programme of the CHEMCAD Suite. CHEMCAD is the tool to simulate steady state processes. The flowsheet is created in the user interface of CHEMCAD, the simulation is performed and the results are represented. A library of Unit Operations, which are required to build the flowsheet are provided on a palette.

CC-BATCH

The batch distillation process is chosen in applications involving small volumes of complex multi component mixtures. The batch distillation process has some advantages as compared with a continuous rectification but experience is required to achieve an optimum solution. CC-Batch helps the user to reach this objective quickly.

CC-DYNAMICS

When studying mass and energy balances the steady state simulation with CHEMCAD is the programme of choice. But, when studying time dependent processes the add-on programme CC-DYNAMICS is the perfect tool to simulate control processes and the behaviour in columns, equipment and reactors. The most important unit operations in CC-DYNAMICS are the dynamic vessel, batch reactor, dynamic column with hold up, PID controller, control valve and ramp controller.

CC-SAFETY NET

Complex pipe networks with pump, compressor, turbine, valve, and relief devices based on a CHEMCAD flowsheet. The simulation of safety and relief valves is carried out in accordance with DIERS technology. As a result the mass balance of all streams, their stream direction, physical properties and physical condition are obtained, with two phase streams and their regime being recognised automatically. Several fluid flow models can be chosen for pressure drop calculations. Performance data can be entered for pumps, compressors and turbines allowing the typical performance in plants to be simulated, e.g. pressure drop and mass flow in an isometric pipe system.

CC-FLASH

Phase equilibria including VLE (vapour-liquid-equilibrium), LLE (liquid-liquid-equilibrium), SLE (solid-liquid-equilibrium) of multi component mixtures, dew and bubble points, two phase condition, mixture condition, liquid interfaces graphical presentation of binary and ternary phase equilibria, residue curves, and physical properties of multi component mixtures. User components can be added to the data base.