[time-nuts] Cesium Clock Avialable

[Bob kb8tq]

Hi

At least these days, a 5071 comes back from the factory with the same Hazmat labels 
on it as it ships into their factory with. 

Bob

> On May 19, 2018, at 4:43 PM, Poul-Henning Kamp <phk at phk.freebsd.dk> wrote:
> 
> --------
> In message <B17ED93D-0178-456F-B448-A93697E44F10 at n1k.org>, Bob kb8tq writes:
> 
>> Cs is classified rightly as a hazardous substance. Transporting and shipping 
>> hazardous stuff is indeed regulated (as it should be). For various silly reasons
>> the minute amount of Cs inside a virtually indestructible container in a Cs 
>> standard  falls into the hazardous category. 
> 
> The reason for this is actually not very silly.
> 
> Very potent Cs137 sources are used in borehole characterization in
> disturbingly high numbers, and they are licensed and tracked by the
> relevant national regulatory agency, NRC.gov in the USA.
> 
> The HAZMAT regulations used to be different for Cs137 (nuclear
> concerns) and Cs133 (chemical concerns) but smartasses in the oil
> industry discovered lower costs if they "couldn't remember the
> number".
> 
> I belive HP used to have an exemption for shipping factory new
> CS-tubes *from* their factory, but not for shipping new or used
> tubes *to* their factory, because customers could not be trusted
> to pack according to spec.
> 
> -- 
> Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
> phk at FreeBSD.ORG         | TCP/IP since RFC 956
> FreeBSD committer       | BSD since 4.3-tahoe    
> Never attribute to malice what can adequately be explained by incompetence.