Plant Management


meant to be an important part of the quality plan and aims at giving the following positive aspects.


l Requirement breakdown from high level to detail requirements (traceability of detail requirements to their origin; creates a good overview).


l Clarify responsibilities for different project activities, and plant components.


l Detect faults and deficiencies early in the project l Enables planned V&V (Validation and Verification) requirement fulfilment.


Cogeneration project


The benefit of using dynamic simulator technology is that it can be used through the whole project, from the early design phases to commissioning and training. Extreme operating conditions and faults can be studied


carefully, and tuning can be made in early stages to meet the performance requirements. Expensive reengineering during startup can be avoided, and the simulator can preferably be used for operator training. Consequently, the start-up can be made faster, which saves


a lot of money due to improved productivity (Fig. 2). We will describe a recent Cogeneration project where the


methods above have resulted in superior plant performance. One of the major pulp and paper manufacturers in


Sweden has recently modernised its mill. A new recovery boiler and a new turbine were purchased. The existing boilers operate at a lower pressure than the


Fig. 2. Faster start-up is possible if a simulator is used in engineering due to more precise design and tuning. Shaded area represents gained production.


new boiler, so a turbine with two steam inlets and four steam outlets was chosen, one for each internal steam branches with consumers (Fig 3). Solvina got the task to develop the whole steam system control, and hence integrate the new equipments into the existing plant. This was a huge task which required advanced engineering tools.


Operating Requirements


In the early stages of the project, it was agreed with the customer about the operating requirements for the cogeneration power plant. The plant should maintain stability in all normal operating conditions, which were defined and agreed upon. In addition, different disturbances, either internal or external, should cause a minimum of plant trips and outages, in order to achieve best possible productivity.


Ensuring the right temperatures at oil field K


ashagan, 80km south-east of Atyrau, in the North Caspian Sea, is the largest oil field discovered wi thin


the past 30 years. I t extends over a surface area of approximately 75km by 45km. Its development represents one of the greatest challenges faced by the petroleum industry, given the deep, high-pressure reservoir, the high sulphur content, the shallow waters that freeze in winter and the marked shifts in temperature. Due to the previous successful realisation of different offshore applications, BARTEC


received the order for the engineering, procurement and construction management of heat tracing on EPC-2 island of Kashagan project. The target was to keep the temperature of the crude oils on a constant level as well as to avoid the pipes getting frozen. The heat tracing was also used for the freeze protection of the helideck. The used cable was the self-limiting parallel heating cable PSB as well as the self-limiting parallel heating cable HSB. The convincing advantage of these two kinds of cables is their ability to be used in explosive atmospheres without any temperature limiter. Consequently, costs for further components could be saved. More than 10,000m of the cables were used.


The system provider BARTEC


did not only provide the heating cables and the connection kits


but also the required control technology in order to offer a complete solution from one hand. Apart from the engineering and the supply of the heating technology products, BARTEC also provided skilled personal in order to assist with the installation, to exchange knowledge, and to save clients time so that they can go about their business. l


Enter 19 or ✔ at www.engineerlive.com/asia


BARTEC Srl is based in Melegnano, Italy. www.bartec.it


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