News

Building a nuclear power plant, Manoir Industries expertise defined the stainless steel primary loops

Pressurized water reactors are today the most common functioning nuclear powerplants. They are designed with three successive coolant loops. The primary loop drives the heat extracted from the nuclear reaction towards steam generators. The steam generated within secondary loop then drives steam turbines that generate electricity. The coolant water within primary loop circulates within the reactor. It is highly pressurized at around 150 bar to remain liquid at high temperatures (350°C). The primary loop is a critical component that…

Manoir Pîtres: 100 years of innovation and passion for industrial excellence

Manoir Pîtres, Manoir Industries’ subsidiary, celebrates its 100th anniversary this year. Created in 1917, it has constantly invested and innovated to remain at the forefront of the metallurgical industry in terms of manufacturing processes, controls and new material development. Manoir Pîtres is a foundry that is mainly aimed at the petrochemical, nuclear, hydraulic, defence, steel and railway markets. More than 80% of its products are exported. All over the world, moulded and machined components, ready to be assembled, along with…

ASME Certification

The new ASME III certification positions the Manoir Pîtres plant as the only French foundry certified for all possible construction codes in force in the nuclear industry! Following the RCCM and HAF 604 certifications, the organization and the quality system of Manoir Pitres’ Plant has been successfully awarded ASME certification (American Society of Mechanical Engineers) Section III certification – Nuclear (Material Organization). This certification defines the rules for equipment construction & inspection under pressure in nuclear plant worldwide. This knowhow makes…

Vertical Spinning

In the continuity of improvement of centrifugally cast parts, Manoir has extended its fabrication by installing vertical spinning equipment which is a complement to the horizontal spinning equipment used for tubes. The process consists in having the mold spinning around a vertical axis, while submitting the cast metal to varying acceleration according to their dimension or their shape. The advantages of this process are numerous: the pieces are perfectly sound and can meet the strictest radiographic test requirements, we obtain a…

The TOS® equipment, a machining center for valves and nuclear parts

In 2012, in order to accompany its customers, Manoir Pîtres decided to deliver some castings not only rough machined, but delivered at the final machining stage. This allows our clients to install directly the equipment without additional machining steps. Thus, assembly time is reduced and constraints related to the addition of others subcontractors disappear. The acquisition of the TOS® machining center gives to Manoir this capacity. The maximum weight capacity of the machining center is 20 tons, it is…

The fast line, Manoir shortens the production lead time of static castings

After few decades of operation Manoir Pîtres has decided to upgrade its static casting production process with a dedicated layout. After solidification, and before machining, a sequence of operations is carried out on static castings. These operations consist of: – Cutting the gating system (vents, risers…), – Grinding to shape, – NDT (Non-Destructive Testing): visual examination, dye penetrant testing, magnetic particle testing, and – Shot Blasting In the past, these various operations were carried out in particular workshop units, requesting many handling and then creating too much…