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NTP Radioisotopes (Europe) S.A.

Selenium-75Radiography Sources

Industrial Applications of Selenium-75 Sealed Sources

Description

Selenium-75 (Se-75) in gamma radiography is now becoming the nuclide ofchoice for non-destructive testing (NDT) applications because of its softeremission spectrum and lower energy gamma ray, which makes it ideal whenhigh quality images in the 5mm to 30mm (0.2” to 1.18”) range are required.

Compared to other isotopes used for the same application Se-75 has asignificantly longer half-life of 119.8 days that reduces decay loss. This isbeneficial when transported for use in remote zones and offshoreapplications. It also is successful in replacing X-ray apparatus in some pipelinecrawler applications.

Ÿ NTP Europe Se-75 sources are available in various dimensions and typesof capsules to fit most of gamma radiography devices

Ÿ They are double encapsulated. The inner capsule is made of vanadium,with a stainless steel outer capsule

Specialisingin the productionand supply of radiography sources

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Actively in your world

NTP Radioisotopes (Europe) S.A.

Avenue de l'Espérance 16220 Fleurus,Belgium

Meeting Customer Needs

Air Kerma Rate at 1 meter

Delivery Time

Specifications

NTP Europe offers customers a reliable andsustainable supply of excellent sources, stronglysupported by the proven competence of our parentcompany, NTP Radioisotopes, which is based in SouthAfrica. Our manufacturing process provides us with

the versatility to make custom sources fitting most of the Se-75 equipments currently available on themarket.

Ÿ 1.95 mGy/h for 37 GBqŸ 0.224 R/h for 1.0 Ci

Ÿ 2 to 3 weeks for 3 x 3 mm and 2.5 x 2.5 mmŸ 12 to 16 weeks for other dimensions dependent

on reactor schedule

Ÿ Source: elemental Se-74 or Vanadium SelenideŸ Capsule:

ú Inner capsule Vanadiumú Outer capsule stainless steel AISI 316

Ÿ Half-life: 119.78 days

Types MaterialCertificate

Material

Special Form

ISO CodeActivity

Se-75 Capsules

SR-17,SR-18

and GS75M5,180 Gbq 140 Ci RUS/6223/

S-96

C63545(fire tested

to 1200°C)

Stainlesssteel

Focal Spot Sizes

ActiveDiameter (mm)

1.0

1.5

2.0

2.5

3.5

3.0

ActiveHeight (mm)

185

370

1,295

2,220

3,330

4,440

5

10

35

60

90

120

Gbq CiEquivalent Activity (±10%)

1.0

1.5

2.0

2.5

3.5

3.0

Gamma Spectrum

Selenium-75(Se-75)

Gamma -Ranging from66 - 401 keV

17.4

59.4

59.5

25.3

121

136

265

280

Major Yield (%) Energy (keV)

+32 71 82 3570 or +32 71 82 3571+32 71 82 3666sales@ntp-europe.eu

www.ntp-europe.eu