Northern Natural Gas has implemented a System Overrun Limitation until further notice at the Gilmore City #1 point Friday, saying it was due to sustained flows in excess of facility capacity.
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In an abrupt reversal, Northern Natural Gas ended a System Overrun Limitation (indicating heavy heating load) in all market-area zones Friday and said a System Underrun Limitation would take effect in all zones Sunday “due to the large warm-up expected over the weekend.” A bulletin board posting projected that Northern’s system-weighted average temperature would go from minus 4 Friday and plus 2 Saturday to 19 Sunday and 24 Monday.
Northern Natural Gas, which had implemented System Overrun Limitations (SOL) last Friday for all market-area zones and for the New Market, MN, #1 Town Border Station and then extended them through the Saturday-Monday period, said Monday it was extending the SOLs again through at least Tuesday.
Northern Natural Gas extended System Overrun Limitations (SOL) for all market-area zones and for the New Market, MN, #1 Town Border Station through Friday “due to continued cold temperatures.” Previously the pipeline had scheduled the SOLs only through Thursday (see Daily GPI, Jan. 13).
Northern Natural Gas said forecasts of below-zero minimum temperatures prompted it to post a System Overrun Limitation (SOL) for all market-area zones (ABC, D and E/F) Sunday. Zero System Management Service was available that day, Northern said. It also posted a Sunday SOL for the New Market, MN #1 Town Border Station.
Northwest said it will lift the Stage II (8% tolerance) Overrun Entitlement for receiving parties located north of Plymouth Compressor Station Friday. Northwest continued to advise customers not to draft its system north of Kemmerer Compressor Station in order to preserve north-end balancing gas needed to meet upcoming winter demand and help mitigate OFOs.