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Basic assessment and preliminary plan

The engineering office SHN in Chemnitz is your competent partner for engineering services in the field of basic assessment and preliminary planning.

Our planning services include:


In order to be able to make investment decisions, it is required to carry out a location analysis during the basic assessment if necessary, a location comparison with an appropriate assessment is also essential.

The location criteria are based on different points of view. On the one hand, economic aspects such as investment costs, customer proximity or sales opportunities are considered. On the other hand, environmental law (BImSchG) and procedural aspects are considered. The location of the future plant from a structural point of view, proximity to objects worthy of protection, environ-mental protection (environmental compatibility) and pollution control or logistics are of great im-portance here. Issues of basic factory planning should also be considered in this step of work and should be taken into account in the decision-making process.

In the case of a location analysis, we define the location and evaluation criteria together with you. Subsequently, we independently obtain detailed information, evaluate the findings from an enginee-ring point of view and appraise the results. A utility value analysis can also provide instructive in-sights. In the following, we compile the necessary data for you, produce drawings and analyse exclusion criteria. Finally, we present you with a suggestion for decision.


For the draft of the process engineering concept, we independently obtain detailed information, evaluate the findings from an engineering point of view and appraise the results. A utility value analysis can also provide instructive insights. In the following, we compile the required data, produce drawings and analyse exclusion criteria. Finally, we present you with a suggestion for decision.

  • Clear presentation of the process sequence in a basic flow diagram with flow rates
  • Selection of main process components and representation in a process flow diagram ac-cording to DIN EN ISO 10 628
  • Draft of a provisional installation plan for the apparatus as a basis for the design of the construction equipment
  • Presentation of the design in variants as preparation for the customer’s decision

In the factory and logistics planning, we support you in the creation of a permitting but above all also practical concept for a future plant. It does not matter whether the objective is a new building, the conversion or redesign of existing facilities or their extension.

In order to realize a holistic planning, we differentiate between the planning fields:

  • Site planning: Determination of a suitable location, taking into account location criteria<
  • Layout planning: Design of workable layouts including the selection and arrangement of buildings, traffic routes and the installation of plant technology
  • Factory structure planning: the dimensioning and structuring of production and logistics systems including the necessary personnel and organisational planning

We use a variety of planning tools. Through the cooperation of our engineers and specialists and the merging of different fields of knowledge, a holistic concept is created. Based on your suggestions, the process engineering processes as well as the local and structural conditions, digital lay-outs, device and machine installation plans and process flow diagrams according to DIN EN ISO 10 628. These are used for further planning and implementation. This is followed by the optimization of the plant by integrating further criteria. This phase focuses on improving logistics (e. g. material flow). In addition we would like to develop variants for you and evaluate them.


The construction design is a process within the construction planning process in which the client’s ideas are presented during the implementation of a planned construction project. It is often referred to as “design planning” as a planning phase of the HOAI. This is the stage in a planning process in which a design is developed.

Building design / draft planning are carried out by architects and engineers. The goal is a coherent and feasible planning concept that takes into account all project-specific problems. For responsible construction planning, the current regulations as well as the state of the art must be observed. Functional, constructive and design planning decisions also influence the building design.


We record the actual status of your energy plants on site in your company and evaluate your plants in terms of their legal compliance and state of the art. On this basis, we will present you with suggestions for possible improvements in the use of energy sources. In addition, we prepare drafts for the implementation of these proposed solutions, cost-benefit analyses and assessments for you.

according to the Machinery Directive (FMEA, HAZOP)

Since 2010, the Machinery Directive 2006/42/EC has been in force, which further defines the requirements for a risk or hazard assessment and underlines the product-accompanying implementation in the planning phase. Accordingly, it is necessary to determine which basic health and safety requirements apply and which measures are required during the design and construction of a machine or plant by the manufacturer. Various methods are available for this purpose, including FMEA, HAZOP or HACCP.

After completion or installation of a machine or plant, we assess potential hazards based on pre-defined assessment criteria, applicable legislation, regulations of the professional associations and DIN standards. On the basis of DIN, we carry out a targeted inspection on site and systematically record, describe and document hazards. We then evaluate them and show you the existing hazard potential and prove the need for remediation. As a result of the hazard assessment, you will receive a documentation with suggestions for improvements to eliminate hazards to machines or plants or to reduce them to a reasonable level. With us, you are already on the safe side during the commissioning of a machine or plant.


We carry out cost investigations in accordance with DIN 276. These may be the basis for financing, for cost specifications, for cost control and cost management measures, or for planning, awarding and implementation decisions. Alternatively, a cost estimate can also be used to prove costs incurred.

According to DIN 276, the costs in the construction industry are subdivided into the levels of cost framework, cost estimation, cost calculation and cost determination. These are defined according to their purpose, the necessary bases and the level of detail. The level of detail increases from the cost framework to the cost determination.