Water-washing rock drill water on off sequence

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Water-washing rock drill water on off sequence

6 FAQs about [Water-washing rock drill water on off sequence]

What is off-line water wash in a gas turbine?

During off-line water wash, wash solution is applied to the atomizing nozzles at 15 gpm (57 lpm) through a 50-µ filter. Solenoid-activated valve SOV-5032 admits off-line wash solution to turbine inlet port S1. Off-line water wash may not be initiated until gas turbine surface temperatures are less than 200 °F (93 ºC). Turbine Compressor Cleaning

What is an off-line water wash?

The off-line water wash (referred to as a crank-soak wash) consists of the following cycles: • wash Initiate an off-line water wash only after the engine surface temperature is < 200 ºF (93 ºC). Turbine Water Wash Features Water wash equipment located on the main skid consists of a manifold and spray nozzles and solenoid operated valves.

What are the procedures for preparing a water wash skid?

The procedures include preparing the field, positioning valves, isolating transmitters, preparing the water wash skid and HMI, performing prewash, wash, soaking, rinse and drying cycles. Safety precautions are outlined to prevent thermal shock to the turbine from temperature differences between the wash water and turbine.

Does a gas turbine have an off-line water wash manifold?

Off Line Water Wash Most units have both an on-line water wash manifold and an off-line water wash manifold. The off-line water wash system is the most effective in removing dirt and oil from the compressor blades. This involves shutting down the gas turbine, and putting it on crank cycle (roughly 20% speed).

How does a water wash work?

After permissives have been met, valves open to allow the wash solution to enter the manifold and spray nozzles using customer connection for an on-line water wash and customer connection [72B] for an off-line water wash. The wash solution is pumped and filtered before entering the main skid.

What is a water wash system?

The water wash system provides for washing the turbine when the turbine has been shut down for maintenance (off-line water washing). Off-line water washing may not be initiated until engine surface temperature is < 200 °F (93 ºC). Refer to F&ID 020020-01-683262, Water Wash System, provided in Chapter 7.

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