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Entsys Technologies - Non-Destructive Testing and Nuclear Medicine

Cobalt-60 sources and source holders

Cobalt-60 sources

The SENTINEL range of sources and source holders caters for most industrial applications using gamma radiography.

A choice of isotopes provides for the widely varying requirements demanded by different materials and site conditions. Sources with outputs ranging from less than one curie up to serveral hundred are available -all precision constructed to ensure the highest possible specific activities and smallest focal spot size.

Source exchange is available as service either on-site or when source projectors are returned to SENTINEL for inspection or overhaul. Sources can be shipped in the source projector on suitable returnable transport container.

Cobalt-60 sources are constructed using compression fused cobalt metal pellets conformed within a spherical welded stainless steel capsule.

Characteristics

Optimum working thickness
steel	50 to 500mm
light alloys	150 to 450mm
other materials	0.4 to 1.2g/mm²
Half life	5.27 years
Principle gamma energies	1.173 & 1.333MeV
Output at 1 metre for monomail equivalent activity of 37GBq (1Ci)
Exposure rate	1.30 R/h
Air kerma rate	3.152μ
Availability
A range of sources is normally kept stock Pease enquire for details.

Source holders

Source hoders offered by SENTINEL include a comprehensive choice of designs which match original equipment manufacturer specifications and are fully compatible with most current makes of gamma radiography projector.


*Connector* The patent connector design is constructed from hardened steel and manufactred to critical dimensional tolerances. The force of the integral stainless steel sprung plunger is tensioned precisely to always provide a secure and positive connection to the control drive cable. the assembly, swaged to the teleflex cable, has an unmatched record of safety and wear resistance in the industrial radiographic industry.
*Capsule assembly* Sources capsules are constructed using either stainless steel or titanium alloy hermetically seald by tungsten inert gas fusin welding and finished to exacting standards. Every capsule is subjected to a series of quality inspection tests to ensure weld integrity and uniform wall thickness.
		Stop ball The stop ball, made from stainless steel, is precision drilled, accurately positioned and secured in place with three point high pressure swaging. Precise positioning of the stop ball ensures that the source can be accurately and safely stored within the projector. *Flexible cable* The source capsule is securely attached to a distortion and fray resistant teleflex cable by swaging under high pressure. The resulting bond is tensile tested for optimum strength well beyond operating limits. The teleflex cabling, consisting of spiral wound flexible steel, has proven to be consistently durable and reliable over many years of use.