Monitoring Instruments

TABLE 2 - MONITOR AND SAFETY CONTROL SCHEDULE

Light

and

Indicating

Item

Shutdown

Alarm

Light Only

7.

Low Cooling Water Flow

No

Yes

-

8.

Low Oil Reservoir Level

No

Yes

-

9.

High Condensate Level Each Intercooler

Yes

-

10. Vibration Monitors Each Pinion

Yes

-

11. Surge Limit Approach

Yes

-

12. High Motor Stator Temperature

Yes

-

13. High Condensate Level Aftercooler

No

Yes

14. High Inlet Pressure Drop Across

No

Yes

-

Inlet Air Filters (combined, 3 stage)

15. High CO Level

Yes

-

2.3.5.6

Monitoring Instruments

Provide the following monitoring instruments in addition to the monitor and

safety controls. Pressure gages shall conform to ASME B40.1, 115 mm 4 1/2

inch, red marking pointer, single bourdon tube, brass case, black enamel

finish. Provide pressure gages with a pressure snubber and a stainless

steel barstock needle isolation valve. Thermometers shall be extended

stainless steel sheathed bimetallic stem, 90 mm 3 1/2 inch dial, and

separable 100 mm 4 inch stainless steel wells. Temperature measurements at

inaccessible locations shall be made with remote reading thermometers

conforming to MIL-T-19646, Class C separable well of Type 304 stainless

steel. Select pressure and temperature gage ranges to give a normal

operating reading near the midpoint of the scale range.

a.

Oil cooler outlet temperature gages for oil.

b.

Oil cooler inlet and outlet temperature gages for water.

c.

Lubrication oil pump discharge pressure gage.

d.

Compressor seal air pressure gage, if applicable.

e.

Inlet air filter differential pressure gage with 1992, zero, 1992

Pa 8, zero, 8 inch water gage. Provide selector valve, tubing,

and tap to measure static gage pressure downstream of each filter

stage.

f.

Pinion shaft vibration monitor readout with stage selection switch.

g.

Total running time readout.

h.

Cooling water supply to compressor pressure gage.

i.

Cooling water return from compressor pressure gage.

SECTION 15213N

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