State of Technology Report for Force Main Rehabilitation, Final ...

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Table 7-1. Technology Gaps and Closure Costs and Benefits
Gap Close By Benefit Cost Challenge
External data collection Increase sample size More reliable data High Technologies that provide wall
thickness data over a long distance from
a single point
External data collection Target high risk locations Find worst case. Prioritize Medium Develop screening method - use LPR
Internal data collection Live insertion and working Reduced cost of data High Live insertion and retrieval of existing
Risk-based assessment Method for determining
consequence of failure
Assessment with limited data Bayesian belief networks Assessment at lower data
Operation and maintenance for
assessment
Integrated approach/database More assessment data at low
CIPP long-term performance in Determining susceptibility to
pressure wastewater application strain corrosion
CIPP pressure design Develop/adopt procedure/method Long-term confidence in CIPP
rehabilitation
Rehabilitation or replacement Knowing total rehabilitation cost Improved decision-making on
decision-making
including by-pass pumping,
compared with replacement cost
rehabilitation vs. replacement
Emergency repair of
Develop procedures and train Remove reluctance of utilities
rehabilitation systems
utility personnel
to rehabilitate force mains
Identify critical assets Low Transforming qualitative information
into quantitative data for decisionmaking
Medium Determining adequate level of data for
collection cost
model to be robust
cost
Low Obtaining and capturing relevant data
Long-term confidence in CIPP Medium Test method to identify strain corrosion
rehabilitation
effect over long-term
Low Acceptance of method developed
tools
Medium Data for robust cost model
Medium Rapid procedures that can be
implemented by utility crews