Engineering & Simulation Consultants


As chemical process engineering consultants we provide conceptual and front-end engineering design services with the following typical deliverables:

- Developing process design basis

- Developing conceptual design

- Performing process calculations and mass & energy balances

- Sizing of major and auxilliary equipment such as pumps

- Sizing of lines, valves and safety relief valves

- Selection of unit operations, instrument, valves and pumps

- Preparation of valve, instrument, equipment and line list

- Preparation of instrument and equipment datasheets

- Hydraulic study

- Developing control philosophy and functional specification

- Developing process flow diagrams (PFDs) and piping & instrumentation diagrams (P&IDs)

Process dynamic system modelling and simulation using ASPEN PLUS or ASPEN HYSYS

​​- Developing commisioning procedure and operational manual


As one of the most established chemical plant design firms, our engineering consultants provide professional services in plant engineering design, chemical process engineering, plant hazard mitigation and building services review.

We differentiate ourselves in the way we approach a problem. Our standard approach involves in-depth analysis that goes beyond simply adopting rule-of-thumb guidelines. Whilst rule-of-thumb provides a starting point for most design works, it has the tendency to overdesign which eventually leads to higher overall fabrication and project costs. In a nutshell, our engineering consultants are supported by in-house simulation technologies to ensure effective & efficient deliverables.​ We provide services to clients based in Australia, Singapore, Indonesia, Malaysia.

Our scope of engineering services are: (1) Plant Engineering Design, (2) Chemical Process Engineering, (3) Plant Hazard Mitigation and (4) Building Services Review

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Our building services engineering consultants provide independent performance-based engineering review services of building services design to ensure the building of interest will perform as design intention. We also provide performance-based engineering troubleshooting services. The scope of work in which our chartered professional engineers operate include:

Mechanical services: air condition, mechanical cooling, heating, humidity & ventilation AS 1668.2
- Hydraulic services: sanitary plumbing & drainage, potable hot & cold water, recycled water, water

  treatment system
- Environmental sustainable design: energy modelling, thermal comfort analysis, natural ventilation

  study, solar & glare analysis
- Environmental impact: removing particulates & contaminants, diluting gaseous contaminants,

  pollutants emission study
- Air movement: circulating and mixing air for proper ventilation and thermal energy transfer
- Fire Engineering: smoke and hazard management, emergency egress study

​- Wind effects and wind loads on buiding structures

Plant Hazard Mitigation - Jimmy Lea P/L
Building Services Review - Jimmy Lea P/L


Accidents in a chemical plant can be divided into fires, explosions, vapour cloud explosions, floods and windstorms. Economic loss is consistently high for accidents that involved explosions. As experienced performance-based plant hazard mitigation specialists, we conduct plant hazard, risk and consequence assessment in the chemical, petrochemical, hydrocarbon, oil refinery, LNG plants and all major hazard facilities. Our plant hazard mitigation services include but not limited to:

​- Chemical Plants: pressure buildup, toxic material leakage, fire, smoke, vapour cloud explosion
- Coal Storage: particle concentration downwind, effectiveness of mitigation measures
- LNG Plants: temperature rise, vessel or pipe leakage, gas dispersion, vapour cloud explosion 
- Major Hazard Facility: vessel or pipe leakage, vapour cloud explosion, reaction runaway

- Physical Energy: pipes and vessels explosion study and prediction of peak overpressure
​- Blast Radius: prediction of radius of impact, buildings affected and the severity of the explosion
- Blast Mitigation: explosion mitigation measures and redesign of petrochemical plant layout

- Blast Fragments: predicting how far and fast will the fragments travel

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Plant Engineering Design - Jimmy Lea P/L

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Chemical Process Engineering - Jimmy Lea P/L


As a plant engineering consultants, we provide performance-based engineering design services across many industries particularly in the areas of:

- Multidisciplinary detailed engineering design for construction

- Capability includes designing plants that process materials in solid, liquid and/or gas phases

- Design of integrated control and safety system (ICSS) that consists of BPCS + alarms + SIS

- Experienced in designing plants as per regulatory requirements, standards and design codes

- Distributed control system (DCS) or modular programmable logic controller (PLC) system

- Mechanical engineering design supported by 2D drafting and 3D geometrical modelling

- Structural design of ladders and plantforms as per relevant Australian Standards

- Design of plant layout and pipe routing

- Procurement, inspection and receiving of equipment on behalf of clients

​- Factory acceptance and testing

- Plant construction management to ensure the plant is constructed as per design intention

- Commissioning support and process plant or chemical plant performance optimisation