ACADs (08-006) Covered

KeywordsTurbine Auxiliaries, Mechanical Systems, Gates, Cranes and Hoists.

Description

Supporting Material

1.3.4.5 5.2.4.5

Power Plant Construction and QA/QC

Section 7.3 – Auxiliary Mechanical Equipment

Engineering Technology Engineering Technology DivisionDivision

3

Overview

Section 7.3 – Auxiliary Mechanical Equipment

• Hydroelectric Plant Auxiliaries

• Turbine Auxiliaries

• Mechanical Systems

• Gates

• Cranes and Hoists

4

Turbine Auxiliaries

Section 7.3 – Auxiliary Mechanical Equipment

• Most Turbines Operate at Constant Speed• Speed Following

• Newer Units are Capable of Variable Speed• Load or Speed Following• Load Following when beneficial

• Governor controls the inlet gate – 10% change• Turbine Inlet Valve

• Shut for Emergency or Maintenance• Spherical > 500 ft head• Butterfly < 500 ft head

5

Inlet Valves

Section 7.3 – Auxiliary Mechanical Equipment

6

Mechanical Systems

Section 7.3 – Auxiliary Mechanical Equipment

• Cooling Water - oil

• Lubricating - bearings

• Compressed Air - controls

• Fire Protection

• Dewatering and Filling - maintenance

• Drainage - protection

• HVAC (heating, ventilation and air conditioning)

• Oil Storage and Purification

• Potable Water - drinking

• Sanitary – bathrooms, sinks

7

Valves and Gates

Section 7.3 – Auxiliary Mechanical Equipment

Trash Racks

Intake Gate

Maintenance Bulkhead

Draft Tube Gate

Spillway Gate

8

Valves and Gates

Section 7.3 – Auxiliary Mechanical Equipment

9

Cranes and Hoists

Section 7.3 – Auxiliary Mechanical Equipment

10

Questions?

Section 7.3 – Auxiliary Mechanical Equipment