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RE: UN marking guidance

Hullo, all:

The IATA (International Air Transportation Association) Dangerous Goods regs

(chapter 7, "Marking and Labelling") section states that "It is

recommended that package and overpack use markings should be at least 12 mm

high, except for packages of 30L or 30kg capacity or less, when they should

have a minimum height of 6 mm."


This is not rad specific, so should also cover your UN2940 package.



Brian Stankewitsch

SAIC Radiation Safety

16701 West Bernardo Drive

San Diego, Ca 92127



-----Original Message-----

From: owner-radsafe@list.vanderbilt.edu

[mailto:owner-radsafe@list.vanderbilt.edu] On Behalf Of Doug Aitken

Sent: Friday, October 15, 2004 9:48 AM

To: Dave Oshlo; radsafe@list.vanderbilt.edu

Subject: Re: UN marking guidance


At 10:17 AM 10/15/2004, Dave Oshlo wrote:

Hello Radsafers

Looking for guidance on the dimension specifications for a UN marking on a

package, i.e. UN2910.

Have found the IAEA placard specification for UN XXXX, but cannot seem to

find the exact letter height, width, etc. for a marking.

I guess the latest US reg might be a guide:

Sec.  172.315  Packages containing limited quantities.


    Except as otherwise provided in this subchapter, a

package containing a limited quantity of hazardous materials is not

required to be marked with the proper shipping name provided it is marked

with the identification (ID) number, preceded by the letters ``UN'' or

``NA,'' as applicable, for the entry as shown in the Sec.  172.101

Table, and placed within a square-on-point border in accordance with the



    (a) The ID number marking must be durable, legible and

of such a size relative to the package as to be readily visible. The

width of line forming the square-on-point must be at least 2 mm and the

height of the ID number must be at least 6 mm. The marking must be

applied on at least one side or one end of the outer packaging.


    (b) When two or more hazardous materials with

different ID numbers are contained in the package, the packaging must be

marked with either individual square-on-points bearing a single ID

number, or a single square-on-point large enough to include each

applicable ID number.


AFAIK, the requirement for a "Diamond" is not yet in force.



Doug Aitken

D&M QHSE Advisor


Office  281-285-8009

Home    713-797-0919

Cell    713-562-8585