Signal words
The signal words identify the hazard severity levels as follows:
Signal word Meaning
DANGER Indicates an extremely hazardous situation which, if not avoided, will
result in death or serious injury.
WARNING Indicates a hazardous situation which, if not avoided, could result in
death or serious injury.
CAUTION Indicates a hazardous situation which, if not avoided, could result in
minor or moderate injury.
NOTICE Indicates a hazardous situation not related to personal injury.
Safety precautions
NOTICE
Service-disruption hazard
Disconnecting cables and/or replacing circuit packs may disrupt service.
Before taking action, determine the extent of service disruption caused by disconnecting
cables or replacing a circuit pack. Then, perform the action(s) deemed appropriate in
light of the traffic being carried and the nature of the failure.
Many trouble-clearing procedures require actions that are service affecting. These actions
are indicated by a caution message indicating the extent of the service disruption as
shown above.
Trouble-clearing procedures
Safety statements
Structure of safety statements
....................................................................................................................................................................................................................................
....................................................................................................................................................................................................................................
1830 PSS-36/PSS–32/PSS-16/PSS-4
8DG60888CAAA Release 3.6.0 and 3.6.1
Issue 1 June 2011
2-19