MIL-DTL-23618H(AS)
d. Contractors having an automated publishing system may assign permanent numeric
identifiers for hazardous materials warnings in their database; however, the introduction to
the manual shall explain that the numeric identifiers may not appear in sequential order,
since all warnings contained in the database may not appear in the manual.
3.1.5.5.1.1 Icons applicable to hazardous material warnings. NAVAIR 00-25-700 depicts
the icons that are approved for use in association with warnings for hazardous materials. The
introduction of additional icons shall have prior approval of the requiring activity.
a. Icons shall be not less that 3/8 inch in height and 5/8 inch in length. The images shall be
sharp and clear. The graphic design shall be in accordance with the above dimensions and
maintain quality in the image to provide almost instant recognition.
b. More than one icon shall be used for a warning for a hazardous material when the user will
be exposed to more than one hazard.
3.1.5.5.1.2 Hazardous materials referenced in text. In the text of the manual, the caption
"WARNING" shall not be used for hazardous materials.
a. Such warnings shall be identified (highlighted) by an:
(1) Index number (numeric identifier, see 3.1.5.5.1c and 3.1.5.5.1d),
(2) Hazardous material nomenclature, including applicable specification, and
(3) The related icon(s).
b. Complete warnings shall be provided in the HMWS pages for each hazardous material
used in the manual.
3.1.5.6 Nuclear hardness. Nuclear survivability requirements include such factors as over-
pressure and burst, thermal radiation, electromagnetic pulses (EMP) and transient radiation effects
on electronics (TREE). If equipment to be operated, maintained or overhauled has nuclear
survivability requirements, applicable warnings shall be incorporated into technical publications to
ensure that hardness of equipment is not degraded during operation and maintenance. Caution
shall be taken not to include classified information in an unclassified publication.
3.1.5.6.1 Symbols. All hardness critical processes/steps/items will be marked with the
appropriate symbols [HCP] / [HCI] / [OCP] / [OCI] / [CSP] / [CSI] as follows:
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