Plant and workshop construction - Installation

The various participants in the installation of the systems are :

• the project owner, who makes the investment ;

• the project manager, who is responsible for steering the project and is generally responsible for its design;

• the company doing the work.

The actions of these players are so intertwined that the success of the whole can only be assured if each establishes a relationship with the other based on partnership.

Furthermore, the size of installations can be measured in thousands or millions of hours, but while the means of realization differ, the problems to be solved do not change in nature.

Indeed, based on the experience of everyday life, assembling a kit supplied with assembly instructions almost always appears to be a straightforward operation. However, the exercise quickly becomes more complicated if the same assembly has to be carried out under the following constraints and conditions:

• outdoor installation site ;

• the need to prepare certain components for assembly on site, prior to assembly, from basic elements supplied in bulk;

• the need to call in specialists to whom certain jobs are subcontracted;

• not all components are available before assembly begins, but deliveries are staggered over time, with availability not necessarily in harmony with assembly logic;

• assembly instructions divided into several parts: they don't give an immediate overview, and omit certain details, forcing you to imagine and reconstitute assembly sequences; moreover, they may contain errors that make assembly impossible;

• assembly kit including a dynamic part and its implementation ;

• the need to complete the assembly within a given timeframe; experience shows that this is by far the most demanding requirement;

• environmental constraints requiring safety measures.

Whatever the volume of work involved, setting up industrial plants involves all these difficulties, which are obviously amplified by the size effect and the nature of the techniques to be used. These installations always include a significant volume of work to be carried out in situ, representing between 15% and 50% of total productive hours (table 1 ), and mainly involving buildings and civil...