Deaerator Condensate Return System Chemical Treatment System

12-volt signal to water meter, and pulse accumulator.

2.11.4

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NOTE: Select 200 liter (50 gallon) drum for boiler

plant up to 22,650 kg/hr

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One feedwater chemical treatment system for deaerator shall be provided

including the following:

a.

One chemical feed pump. Chemical feed pump shall be provided with

pressure relief valve piped on discharge side of chemical feed

pump to divert overpressurized chemical solution back to the

storage tank. Chemical feed pump shall have capability of

accepting 4 to 20 mA dc signal.

b.

[One 8000 liter 200 gallon tank.]

OR

c.

[One 200 liter 50 gallon tank.]

e.

One contacting head water meter shall be provided. Maximum

operating pressure shall be 1650 kPa 225 psigand maximum

temperature shall be 120 degrees C 250 degrees F. Meter shall be

turbine type with cast iron Maine case.

f.

Proportional chemical feed controller and electronic pulse timer.

Electronic pulse timer shall control proportional feed of

treatment chemicals based on makeup water as measured by

contacting head water meter. Controller shall have following

features:

(1)

Painted steel NEMA 12 enclosure

(2) Panel display including one proportional pulse timer,

Automatic-Off-Manual switch. Test momentary switch which

simulates a water meter pulse and runs timer for one cycle, and

pulse accumulator.

2.11.5

Testing Equipment

Testing equipment, including carrying case and spare reagent, for

maintaining control of a program of water treatment standards in steam

boiler system shall be provided in accordance with the water treatment plan.

Testing equipment shall consist of the following:

a.

Reagents and apparatus for determination of phosphate and sulfite

levels in the boiler water.

b.

Reagents and apparatus for determination of PH, P and M alkalinity

and chloride.

c.

Reagents and apparatus for determination of neutralizing amine

level in the steam and condensate return lines.

d.

One conductivity meter with temperature compensation and multiple

SECTION 15561A

Page 91