1-1 Scope of Application This document covers procedures and methods of tests, examinations and inspections to be performed to the Screw Compressor which has been manufactured and supplied by screw compressor vendors. 1-2 Purpose of Examination and lnspection The purpose of the examinations. .
2-1Genaeral General descriptionon examinations/inspections to be performed on the compressor proper and the relatedparts are mentioned in this chapter. The inspection itemsof each major part are shown in inspection and test plan. 2-2Material Inspection. .
After completion of the test, the rotors and the rotor chamber will be visually inspected through the discharge nozzle. (The discharge side is under most severe conditions, and the visual inspection of the discharge side is a normal practice to check a rotor. .
Following Items are measured in Heat Run, Mechanical Run and Performance Test: 1. Atmospheric Pressure 2. Atmospheric Temperature 3. Relative Humidity (Only in Performance Test) 4. Inlet Pressure 5. Inlet Temperature 6. Discharge Pressure. .
Following componenets are used for test from Shop Facilities: 1. Driver( Motor) 2. Couplings 3. Baseplate 4. Suction Filter 5. Suction Silencer 6. Discharge Silencer 7. Lube Seal Oail Unit (Include Oil Reservoir) 8. Piping 9. Instruments 10. Thrust Bearing T em perature.
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[pdf] A down-the-hole drill, usually called DTH by most professionals, is basically a jackhammer screwed on the bottom of a drill string. The fast hammer action breaks hard rock into small cuttings and dust that are evacuated by a fluid (air, water or drilling mud). The DTH hammer is one of the fastest ways to drill hard rock. The system is thought to have been invented independently by Stenuick. Origin of the nameDTH is short for “down-the-hole”. Since the DTH method was originally developed to drill large-diameter holes downwards in surface-drilling applications, its name originated from the fact that the percussion mechanis. .
In DTH drilling, the percussion mechanism – commonly called the hammer – is located directly above the drill bit. The drill pipes transmit the necessary feed force and rotation to the hammer and the bit, along with the flui.
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