Nuclear keyring anyone?

charlottevwa

soolin wrote: »

I have found that getting a mention on MSE often is the kiss of death for auctions. By the time we pick it all apart and find fault the poor seller must wonder what is going on. Huge amounts of hits and no sales!

or they get it removed... depending on the listing

adouglasmhor

RMP wrote: »

in the army i used tritium sights. thats one thing that worked and didnt break

They spoiled you didn't they?

RMP_2

The signs you walk under every day like fire exit signs contain 'lots' of tritium & they are perfectly safe. www.cscoid.com/betalux.asp

CHR15

I think the difference is that, even though Tririum powered devices are perfectly safe under normal operating procedures, these pens are given to children to play with.

Inset into a display console, sat on a table or hanging from the roof, there is no realistic hazard, but break it open and drink the contents....... an entirely different situation!

No danger of offspring being born with three heads but still not good for well-being.


An example of a Tritium treated watch from JSP392

LEAFLET 22 ANNEX A
WRIST WATCH DIVERS 300M– EXAMPLE OF A SUMMARY RADIATION RISK ASSESSMENT
Wrist Watch Divers 300M
Description
Watch marking
Use Luminous watch for use underwater
Supplier
Cabot Co Ltd
NSN
0555-99-757-3314
IPT Details
Combat Support
Radionuclide
Tritium (H-3)
Ionising Radiation
Beta
Half Life
12.3 years
Original Activity
2.4 MBq

Classification
Class B article under the Luminous Articles Exemption Order 1985.
Hazard

Tritium is the radioactive form of hydrogen and is present within the
luminising material on the watch dial. The glass face of the watch is
sufficient to attenuate the beta radiation emitted by the tritium. If the watch
is destroyed in a fire the tritium is rapidly converted to tritiated water – a
more hazardous form of tritium. Tritium and tritiated water emitted during
such an event may present a hazard due through inhalation and absorption
through the skin.

Risk Assessment

The likelihood of accidental damage to this watch is low, because it would
require a strong and directional force to break the glass face of the watch. If broken, and on the basis of an assumption that 10% of the tritium is
removed of which 1% is ingested, a committed effective dose of 0.1µSv
could be received. This dose is negligible. (Ref DRPS Report 289/2004
dated 10/12/04).

Local orders
Details of the required control measures as detailed in this leaflet are to be
included in the local orders for radiation safety (Leaflet 16 refers).
Control measures
during use No protective clothing or special precautions required.

Inspection
Annually as well as during routine maintenance. Check to be made for
signs of damage.

Leak Testing
Leak testing is not required for this component.

Accounting
This item is to be accounted for on a Radioactive Source List. Leaflet 9
refers.

All radioactive material is to be mustered monthly. Any change of location is
to be entered in the Source Movement Log together with any change in
custodian.

Radioactive
Substances Act 1993
Exempt from formal RSA 93 notification to the relevant environment
agencies, provided the total activity of Class B luminised equipment kept on
the premises is less than 200 GBq. This item is to be included in the Annual
Holdings Return to Dstl – Leaflet 3 refers.

The Divers Watch
contains 2.4 MBq of
tritium paint, which is
used to luminise the
hands and numbers, in
dark/ dimly lit
conditions. Page 10

JSP 392
Radiation Safety Handbook
Leaflet 22 Annex A
Page 2
Jan 2007
Storage and
Labelling
This item is to be stored in a dedicated area for radioactive materials.
Leaflet 9 refers.
The storage area is to have a sign indicating the presence of radioactive
material within i.e. a trefoil including the contact name and telephone
number of the RPS and stating the nature of the radiological hazard e.g.
Items contain radioactive material. No radiation hazard from intact item.
Radioactive contamination hazard if item damaged
Contingency Plans

If a breakage occurs the area is to be cordoned off. The broken item can
be cleaned up using a breakage kit (Leaflet 40 refers).
Reporting of loss and certain other incidents are to be carried out in
accordance with the procedures described in Leaflet 14.

Transport
This item may be transported in an excepted package provided the total
package activity does not exceed 40,000GBq and the surface dose rate of
the package is less than 5 µSv h

Hardly Chenobyl revisited but still can't be an ideal substance to make a kids toy out of

RMP_2

I totally agree with you, it's not a childs toy, anyone over say 12 years old.
Good advice I think.

anewman

Yes tritium won't even make it past the plastic/glass to irradiate you, and even if it does it's unlikely to harm you.

Enterprise_1701C

I can't believe it - someone has actually bought two at this price!! A quick google finds them £3 cheaper!!

RMP_2

Yes tritium won't even make it past the plastic/glass to irradiate you, and even if it does it's unlikely to harm you.

Correct:o

I had a quick peek and many internet shops are out of stock, though not all.
Ebay finished items have gone for well over £20 in most instances.:eek:

Ultimately it's a novelty / useful item.

charlottevwa

RMP wrote: »

Correct:o

I had a quick peek and many internet shops are out of stock, though not all.
Ebay finished items have gone for well over £20 in most instances.:eek:

Ultimately it's a novelty / useful item.

I don't get it...
Why?....
£20?...
Why?...

RMP_2

Mine came this morning i couldnt resist ordering one im a sucker for gadgets

its pretty snazzy:rolleyes: