Broken Pipe Plugged at Duke Energy Plant - Feb 09, 2014
Duke Energy crews on Feb. 8 finished installing a permanent plug in a broken stormwater pipe at the company's closed coal-fired Dan River Steam Station in Eden, N.C., to stop the leak from an ash basin, company officials announced. The announcement said the plug is a concrete grout material and capping system; it hardened and was successfully tested, and now workers will grout the entire pipe. - Feb 09, 2014
"Plugging the pipe was clearly job one, but we're
continuing our efforts and working closely with all the agencies involved in
this response," said Charlie Gates, senior vice president of Power
Generation Operations. "Our next step is to continue to monitor the water
quality of the river and to accelerate our planning for the best long-term
solution at the site."
Water tests of the river by the company and by the North
Carolina Department of Environment and Natural Resources (NCDENR) indicate
water quality continues to improve downstream of the spill site.
"We're committed to the Dan River and the communities
that it serves. We are accountable for what has happened and have plenty of
work ahead of us," Gates said.
A sampling of water quality testing being done near the site
is available here on the Duke Energy website.
The break in the 48-inch was discovered Feb. 2. The pipe was
built decades ago, and later the ash basin was expanded so that it extended
over the pipe. The section that broke is corrugated metal, which connects to a
reinforced concrete pipe closer to the river.
DENR reported that its initial water quality testing at the
plant on Feb. 4 "showed no deviation from normal levels of temperature,
pH, dissolved oxygen and conductivity due to the release of water and ash from
the facility’s coal ash impoundment." However, DENR also said these
initial results "do NOT mean the water is safe. DENR staff are continuing
to sample and test the water. On Tuesday, the first round of water samples were
delivered to a lab in Raleigh for further testing for heavy metals, sulfates,
nutrients (nitrogen and phosphorus), and total suspended solids."
DENR reported it is testing for metals that include copper, nickel, sodium, arsenic, beryllium, selenium, and cobalt.
Source: http://eponline.com
Feb 09, 2014