Draft Spill Management Plan for Golen Gol Hydropower Activity

The project is situated at the confluence of Golen Gol and Chitral rivers, and its site is approximately 22 kilometers from the main Chitral city. The project's location in a mountainous region with waterways poses a risk of water pollution, threatening the region's biological resources. The project's emergency management team is responsible for ensuring effective emergency preparedness and response, specifically with respect to oil spills. The team's procedures include activation and operation of the project emergency management team to provide care and treatment for injuries or illnesses, prevent escalation of incidents, provide timely and accurate information to stakeholders, and effectively manage post-oil spill recovery. The project's site characteristics, including rugged mountains and low vegetation, make it prone to oil spills. The project's emergency management plan outlines procedures for spill prevention, containment, and countermeasures. The plan requires operators to inspect all above-water-level turbine runner hub oil systems daily, including sight glasses, piping, and valves. Any small leak from this equipment is contained at the source or flows to the main plant sump via the powerhouse drains. The governor oil system, which consists of a sump, storage tank, piping to the turbine oil head and shaft, and piping to other parts, has a combined capacity of 1,463 liters. Small leaks or total failures and the resultant spills from the reservoir or storage tank will result in spill flows to the generator floor, to the floor drains, and eventually to the main plant sump. Operations personnel on their normal rounds, which occur daily, could visually detect all leaks and spills. The project's emergency management plan also outlines procedures for the turbine bearings, generator thrust bearings, and turbine pit. Each of the three generator units has a turbine pit, an enclosure just above the turbine head cover but below the elevation level of the turbine floor. Any spills or leakage from any of the components directly above this area will be contained within the turbine pit. Operators may detect small oil spills that accumulate in this area on a daily basis. The oil storage room, which stores approximately 500 gallons of grease, oil, and solvents, has a contained spill pit that fully encircles the generator skid. The generator has daily visual inspection procedures, and a more thorough operational check occurs monthly or before each starting operation. Detection of leaks or spills is possible at this time, and the spill containment pit can be cleaned out and the contents properly disposed of. The Golen Gol Substation/Switchyard houses high-voltage switchgear, switchyard equipment, protection and relay equipment, supervisory, metering, and control equipment as well as two step-up transformers. Operations personnel inspect all equipment within the switchyard on a daily basis. The generation step-up (GSU) transformers, which are the primary generator transformers that transmit the produced power to transmission line voltages, each have transformer oil and are within their own spill containment dike. Minor drips and leaks, and a total GSU shell failure that allows for the spill of the entire volume of oil can be contained within these dikes.