GRO-750-TARP-General Body Contaminant Archives

“I explained that it was not acceptable to move the LW Shearer when the general body Methane concentration in the TG return is equal to or greater than 2.5%.” Les Marlborough, Inspector of Mines. 20th October 2017

July 14, 2021

Today (20th October), I, Inspector of Mines, Leslie Marlborough, attended a meeting at Grosvenor mine to collect data requested from the mine in a postal mine record entry issued to…

The risk assessment does not mention the risk of an ignition of Methane as a potential hazard. This has to be a major hazard when considering Methane levels of in the TG, as the primary source of the methane is the Longwall goaf gas, which inevitably will flow in the vicinity of the chain pillar rib line. Les Marlborough Mines Inspector 13th October 2017

July 14, 2021

Inspector Marlborough next MRE about the Grosvenor Procedures for GRO-750-TARP-General Body Contaminant is dated the 13th of October 2017 I found this sentence of the MRE about how the Grosvenor…

“The Level 2 and 3 triggers for Methane for the Longwall return that require the Shearer speed to be reduced by 30% or to stop the shearer do not occur when the shearer is in the TG Shuffle Zone; Has the Methane ignition risk been assessed for this in the risk assessment when developing this TARP?” Les Marlborough Inspector of Mines 12th September

July 14, 2021

Now Mines Inspector issues a written Section 168 Directive to Grosvenor Mine SSE on the 12th of September 2017. The mine is to review the GRO-750-TARP-General Body Contaminant and the…