SUDDEN/NO WARNING TIME
WARNING TIME
-slow, progressive (years) no remedial action possible [rehab will be required at
some time]
-slow, progressive, remedial actions possible [rehab may or may not be required at
some time]
-slow, progressive, remedial actions possible but short lived
-rapid with sufficient warning to rationally plan and budget
-rapid without sufficient warning time to rationally plan and follow normal budget
process
IMMEDIATE CAUSE
TOWBOAT IMPACT
FLOOD/PMF
ICE IMPACT/FLOATING DEBRIS
PIPING/ FOUNDATION DETERIORATION
CONSEQUENCE
LOW UNDER ANY CONDITION (progressive loss of efficiency)
LOW UNDER SPECIFIC CONDITION (valve breaks in open position)
HIGH UNDER ANY CONDITION (loss of pool)
HIGH UNDER THE SPECIFIC CONDITION (valve breaks in closed position)
ASSESSMENT
PROBABLE ACTION
- inspect annually
- set up monitoring/measurement program
- schedule detailed studies
- study in detail now
- emergency repairs
TIME FRAME
- immediately
- 2 years
- 10 years
COSTS
- annual costs (should be fairly well known)
- first cost (ballpark)
- emergency repairs costs
BENEFITS
ENVIRONMENTAL
G-2
Previous Page
