[ RadSafe ] Metric Units

Hans J Wiegert hjwiegert at gmail.com
Sat Apr 25 17:34:41 CDT 2015


You may want to check out ASTM E 61. I was a ember of this group when still
working and know that the group works closely with ISO on many standards.
The Chair of this committee is John Logar. The last email address I have
for him is jlogar8 at its.jnj.com. You can also find him on LinkedIn.

Best Regards,


*Retirement is, when the only day you have to set your alarm clock is
Sunday - so you are not late for church!*

On Fri, Apr 24, 2015 at 4:07 PM, Lawrence Jacobi <rjacobi at austin.rr.com>

> Regarding Mike Brennan’s comment on the use of metric units, I have a
> practical example where it is occasionally problematic.
> I have been engaged recently to prepare applications to register sealed
> sources and devices and obtain SS&D certificates for sources and devices
> manufactured in Europe.  In order to obtain such certificates, one must
> show that the source or device complies with ANSI or other applicable US
> standards.  Having been manufactured in Europe, the sources and devices are
> built to ISO standards.  In some cases, these standards are more up-to-date
> than the relevant US standard.  However, the US NRC and some Agreement
> States require the devices to conform to the US standard.  That means the
> applicant must prepare (at some cost) a cross-reference to show that the
> two standards are comparable.  Another issue arises when one must review
> and understand (and occasionally be confused by) engineering drawings and
> specifications that use metric units.  We’d be well served if we could get
> on the same page with the rest of the world.
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