Is National Grid in compliance with timeline mandates for leak repair?
How does leaking after leak repair affect timeline mandates?
What is the evidence that advanced leak repair techniques were used?
Follow up Sept 8 question: Have you provided a cost analysis of replacement vs repair of proposed site. Of any sites?
Have you considered the cost and viability of the trenchless repair method as one of the options (NGrid uses this method in other states)?
Letter to Public Facilities about an alternative, trenchless, durable, as-safe, less disruptive and lower cost alternative pipeline maintenance method 9/17/22
The Clean Heat Commission report made the following statement: "The Commonwealth’s long-term building decarbonization strategy requires transitioning customers from existing pipeline gas infrastructure to electric infrastructure."
Q: Regarding pipe replacement instead of repair, what is the estimated life of these new pipes? Wouldn’t repair be a cost effective alternative?
SEIs ( HIGH VOLUME ) LEAKS
1) How many SEIs are there in Newton?
2) How many SEIs got repaired in 2022?
2) How much methane is lost from Newton’s SEIs each year ?
3) How much are ratepayers charged each year for the lost gas?
5) What is National Grid’s plan to repair 2023 SEIs?
What is the number of 2022 grade 1 emergency leak repairs?
Why does concern about water intrusion to low-lying pipes result in wholesale pipe replacement rather than repair of known proximate leaks?
On what basis have you drawn a conclusion that water intrusion is due to pipe deterioration, rather than simple joint leaks or other readily repairable leaks?
Is it direct inspection of pipes, or is it inferred from reports of freezing meters above ground? Residents have reported frozen meters as a cause for gas failures.
According to the Newton's Assessor Database, 14 of the 51 homes within the Paulson Road GOL are still heated by oil.
Are any pipe diameter expansions in the GOL related to future plans for gas hookups to these homes, and wouldn't that be in violation of the GSEP enabling legislation?
Did National Grid file the end-of-year leak update required by the GSEP enabling legislation, and how many additional leaks of each type were added to the list for Newton?
Will the pipe pressure be increased? To what operating pressure?
When do you propose to begin injecting hydrogen into the gas lines, and when do you intend to inform residents?
Will you inform residents about the cost increase of hydrogen, RNG, and the combustion emissions like NOx from indoor hydrogen combustion?
Regarding gas leaks addressed by NGrid, what percent are repairs v. pipe replacement?
Why aren’t SEIs a top priority after Grade 1 emergency repairs?