Array ( [slug] => products [id] => 24 ) SELENIUM-75 INDUSTRIAL RADIOISOTOPES
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SELENIUM-75 INDUSTRIAL RADIOISOTOPES

QSA Global, Inc.’s SENTINEL Se-75 radioisotope sources are double-encapsulated and sealed using laser welding for superior quality and safety. Radioisotope sources contain a quasi-spherical metallic pellet for the smallest possible focal dimension which minimizes Source-Film-Distance (SFD) and heightens sensitivity on fixed geometries.

Safety is our top priority. QSA Global, Inc. radioisotope sources are made of a patented vanadium-selenium metal alloy producing the highest possible thermal stability combined with physical strength and durability compared to commonly used elemental Se-75.  

Our SENTINEL Se-75 radioisotope sources are available in maximum focal sizes ranging from 1.4 mm to 3.5 mm and nominal activities up to 100 Ci. (3.7 TBq).

SENTINEL Se-75 is designated for use within the steel thickness range of 0.20 in-1.57 in (5 mm-40 mm) per ISO 5579:2013.


SENTINEL Se-75 in Gamma Radiography

QSA Global, Inc.’s SENTINEL Se-75 radioisotope sources are ideal for controlling the size of the exclusion zone during radiographic exposures at congested work sites. SENTINEL Se-75 radioisotope sources are used on off shore oil rigs and at power generation plants during outages to reduce non-occupational worker exposure.

Gamma Energy Range

 66-401 keV

Steel Thickness

0.20 in-1.57 in (5 mm-40 mm)

Aluminum / Titanium

1.4 in-4.7 in (35 mm-120 mm)

Selenium-75 Half-Life

120 days

Special Form Certifications

USA/0502/S-96, USA/0335/S-96

   

Material

Approximate Material Density

Approximate Half-Value Thickness

Aluminum

2.65 g/cm3

1.100 in (27.0 mm)

Steel

7.80 g/cm3

0.315 in (8.0 mm)

Lead

11.34 g/cm3

0.039 in (1.0 mm)

Tungsten

17.80 g/cm3

0.032 in (0.8 mm)


SENTINEL Se-75 Gamma-Ray Source Projectors
Small, light-weight SENTINEL Se-75 exposure devices can be used in difficult to access locations that x-ray generators cannot go due to their size, weight, and power requirements. SENTINEL Se-75 is the preferred isotope for our SCAR exposure devices to enable the safety exclusion zone at worksites to be minimized during radiographic exposures in congested areas. QSA Global, Inc.’s SENTINEL Se-75 radioisotope sources are also designed for use in our 880 Series projectors for traditional radiography.


System

Assembly Number

Special Form Certificate

Max Capacity

SENTINEL 1075 SCARPro

A425-6

View Certificate

81 Ci (3.00 TBq)

SENTINEL 880 Series Delta

A424-25W

View Certificate

150 Ci (5.55 TBq)

SENTINEL 880 Series Elite

A424-25W

View Certificate

150 Ci  (5.55 TBq)

SENTINEL 880 Series Omega

A424-25W

View Certificate

80 Ci (3.00 TBq)

SENTINEL 959M SCAR

X540/1

View Certificate

81 Ci (3 TBq)

SENTINEL 989 SCAR

X540/1

View Certificate

20 Ci (740 GBq)

  • SELENIUM-75 INDUSTRIAL RADIOISOTOPES

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