Fusible plug

Definition and use

The fusible plug is a waterproof plug linking the inside and the outside of a box, containing for example reactive products.

We manufacture fusible plugs which aims to melt when the temperature inside the box reaches a specific temperature. These plugs melt and thus prevent explosion of the container caused by pressure increase.

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Bouchon fusible

Contrôle desctructif d'un bouchon fusible

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Features :

We offer a large panel of fusible alloy and eutectic alloy from 20°C to 200°C adapting to specific needs.

These metallic fusible plugs are made of steel with a low melting point alloy : eutectic, single phase, binary or ternary.

The use of a DSC (Differential Scanning Calorimetry) is a guarantee for the melting point of these thermal stoppers.

Production pieces

Some of our achievements for mass production pieces

Herringbones lead bricks Technical specifications : Lead bricks are used for the construction of walls, shielding enclosures ensuring men protection against X rays and Gamma radiation when manipulating or stocking radioactive material.

Herringbones half-shells lead shields Technical specifications : Used for the shielding of your radioactive waste lines (gutters, pipes).

Application field :

Herringbones half-shells lead shields are used as shielding for :

• Nuclear plants (CNPE)
• Waste processing plants

 

Dimensions and mass :

We study and manufacture your made-to-measure pieces according to your requirements specification.

 

Contact us for more information about herringbones half-shells lead shields.

 

 

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Transport containers for flasks Technical specifications : The transport for radioactive waste resulting in particular from nuclear plants, is part of the risks to be handled in the case of decommissioning.

Lead balls Technical specifications : Lead balls are used as a radioprotectant shielding in the areas with difficult access like holes and slots.

Lead wool Technical specifications : Lead wool is used as a biological protection against ionizing radiation.

Lead sheet Technical specifications : There are several types of lead available : Pb 99.97%, Pb 2.7% Sb and Pb 4% Sb

Unit parts

Some of our achievements for radiation protection/biological protection

Spacer Technical specification : Shielding of a pump housing.

LR144 Packing Technical specification : Packing for transport.

Shielding element Technical specification : Shielding detector.

Radar elements Technical specification : Shielding detector.

Filtration Technical specification : Protection for filter housing.

Radiation shielding (box with compartments) Technical specification : Confine a box with connection pipe.

Application field : Civil nuclear power

Mass : 600 kg

Dimensions : Length : 76 cm – Width : 48 cm – Hength : 33 cm

Lead type : Pb 4%

 

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Contact us for more information about Radiation shielding.

Company

LEMER Company, lead and low melting point alloys foundry was founded in 1878 by the LEMER family. It has been located in Nantes, South Brittany, France, ever since. The foundry has been in the LEMER family for five generations.

We are specialists in the manufacturing of all pieces made of lead and low melting point alloys, in various business areas like fishing, diving, water sports, ballast, radiation protection and industry.

As well as working in a large variety of sectors, we also manufacture numerous and diversified products: lead sinkers, radiation protection bricks, keels and bulbs, counterweights, lead shot, diving weights, anodes, containers and lead seals.

Our French-made products are exported all around the world: Asia, North America, Africa, and Europe. In order to expand our skills and expertise, we are currently working on alloys such as zinc, tin, bismuth and tungsten that can be substitutes for lead

Historial background

In 1878 LEMER joined the lead industrial adventure. A pioneer in the art of material processing, precursor in modern methods and manufacturing techniques, Louis-François Lemer initiated new applications of lead in industry, medical radiation protection, nuclear, lead seals and fishing weights, in France and abroad as well.

Early in the century, LEMER used the first injection molding machine with pressure, cam operated as well as gravitational casting mold. The precision of these techniques allow a never before achieved level of quality for large production pieces.

Five generations later, through research, experimentation and innovation, LEMER has become one of the European leaders of lead and its derivatives. Throughout these 135 years, LEMER has tirelessly developed a multitude of processes that are now references worldwide. And others remain to be discovered... Lead is today and will be even more tomorrow, a material of the future.

Today LEMER manufactures in Nantes a wide range of fishing sinkers (over 4000 references) and offers innovative solutions for the treatment and use of lead and alloys for many different applications.

The LEMER group remains committed to its regional roots and history. The factory in Nantes is continually modernizing to anticipate environmental and safety regulations and to provide the best production capacity. Permanently connected to a network of international partners and fishing experts, LEMER defends the values that have made its success: the quality of its products for which it is renowned worldwide.

WORKSHOP 

-Low-pressure casting (Techmire 24 (x2) and 44 (x2))
-Die casting (pressing device AGRATI 50T (x2) and 250T (x1) equipped with an ABB robot)
-Gravity casting
-Centrifugal casting
-Wire EDM
-Traditional milling and turning machine
-Numerical controlled turning machine
-3 axes machining center with a fourth axe (HAAS)
-Flat or cylindrical grinding
-Machine for filling round dispensers
-Machine for splitting lead balls (x2)

-> Designing and building tools (softwares : Solid Works / Solid Edge)
-> In-house Research and Development of new products

Why choose LEMER ?

 Our lead smelters have an incomparable know-how. With a minimum of 20 years of experience, they provide a top quality to all our leads.

Moreover, LEMER contributes to the protection of people and goods, by combining technology and ecology. Since 1878 LEMER masters lead process, an alloy in full compliance with the realities of our time, able to serve industry and to participate in the environmental protection.

Each new product is developed to closely meet the expectations of the most enthusiastic persons. Concerning fishing, each product is validated and improved by LEMER fanatic specialists and also by professionals like the French Sea Fishing Team, fishing guides and experimented people on all water site types.

Directly connected to a network of worldwide partners, LEMER defends all the values that make the Company successful : the quality of our products and the interests of our customers.

Aware of the risks of working with lead, LEMER invests 500 000 € every year to ensure the safety of people and environmental protection. The HSC (Commission for Health, Safety and Working Conditions) is responsible for the implementation of regulations, the ISO 9001 Certification and the Research and Development Department. They are major assets that guarantee to our customers products in every respect appropriate to their needs.

Our references

Fishing / Diving

Boating

Ballast

Radiation protection lead

Industry

Substitute

Lead shot

Lead shot for internal trim ballast

Lead Shot : from Ø to Ø  4 mm - Average density : 6.9

Lead shot bags :

Oil-resistant bags of lead shot with thermoweldable seal

Mass : 15 kg ± 50gr

Type of Lead : between 0 et 4% antimony

Lead shot density : with bag : ≈ 6,8 kg / dm3, stacked bags, ≈ 6,5 kg / dm3.

Bag dimension : ≈ 300x200x70 mm

Resistance to contaminated water and hydrocarbon gas oil type

LEMER reference : 99009998

Handle bag:

Mass : 10 kg à 0+200 gr

Type of Lead : between 0 et 4% antimony

Lead shot density : with bag : ≈ 6,8 kg / dm3, stacked bags, ≈ 6,5 kg / dm3.

Bag dimension : ≈ 300x200x70 mm

LEMER reference : 99009999

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Polypropylene bag closed with metal wire

Lead Shot in Big Bag

Lead Shot in plastic bag

Lead shot in 10 kg Bag with handle, made of hermetic Zodiac PVC

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Keels / bulbs

Keels and bulbs manufacturer for many years, LEMER is more than ever in the race. Its location on the Atlantic coast has made the company one of the favorite suppliers of the Vendée Globe Challenge and the America’s Cup and of many French shipyards.

The 450 square meters production site began in 2005, exclusively dedicated to the manufacturing of custom-made keels and bulbs, from prototype to large production, from mini 6.50 to super yacht. With our ISO 9001 certification we can manufacture keels and bulbs from 100 kg up to 20 tons, turnkey delivered in the shortest delivery time.

For more information, see you on LEMER Marine dedicated site :
www.lemer-marine.com

But also keels and bulbs on request.

They trusted us: