H37.REV

WATER TREATMENT

NOTE: FINAL COPY: JUNE, 1988.

NOTE: AFTER PRELIMINARY DESIGN, OBTAIN AND SUBMIT TO WATER TREATMENT CONSULTANT COMPLETE ANALYSIS OF WATER SUPPLIED TO SITE OR, IF NOT AVAILABLE, ACTUAL WATER SAMPLES. ALSO SUBMIT DESCRIPTION OF EACH SYSTEM TO BE TREATED 1. CONDENSER WATER: GPM, TONS REFRIGERATION, TYPE REFRIGERATION MACHINE, TEMPERATURE RANGE, TYPE COOLING TOWER, TYPE AND SCHEDULE OPERATION. 2. CHILLED WATER OR HOT WATER: SYSTEM VOLUME, TEMPERATURE RANGE, SYSTEM PRESSURE & PIPING CONFIGURATION. 3. STEAM BOILERS: PSIG, LB STEAM/HR, PERCENT MAKEUP OR RETURNS, NUMBER AND TYPES OF BOILERS, USES OF STEAM 4. HUMIDIFIERS: TYPE, GPM FOR SPRAY TYPE AIR WASHERS

NOTE: CONSULT SUPERVISOR OR DEPARTMENT CHIEF ENGINEER BEFORE PROCEEDING. WATER TREATMENT CONSULTANT SHOULD ALSO BE ADVISED OF ANY LOCAL OR JOB CONSIDERATIONS WHICH WOULD TEND TO LIMIT SELECTION OF TREATMENT CHEMICALS, SUCH AS WATER POLLUTION REGULATIONS, NPDES PERMIT CONDITIONS, WATER OR ENERGY CONSERVATION MEASURES, NEARBY STACKS OR EXPOSED BUILDING SURFACES, INTERCONNECTIONS BETWEEN SYSTEMS, ETC

Part 1 -	GENERAL

1)	WORK INCLUDED

A.	Work in this Section includes the providing of labor, materials, equipment and services necessary for a complete and safe installation in accordance with the contract documents and all applicable codes and authorities having jurisdiction for the following

1.	Services of water treatment firm.

2.	Chemicals.

3.	Feed and control equipment.

4.	Piping.

B.	See Section PIPING for initial cleaning.

C.	The following systems shall be provided with water treatment prior to testing and starting regular operation:

1.	Cooling condenser water system.

2.	Chilled water system.

3.	Hot water heat system.

4.	Boiler water system.

5.	Humidifier system.

D.	Qualified water treatment firm with:

1.	A well-equipped laboratory managed by qualified personnel.

2.	Knowledgeable and experienced key personnel who are chemical engineers or chemsists and have been in the field of industrial water treatment for over five (5) years

3.	Reliable products with good proven performance.

NOTE: FOR TYPE OF SERVICE, CONSULT SUPERVISOR AND WATER TREATMENT CONSULTANT BEFORE MAKING SELECTION

WATER

E.	Description of water treatment service.

1.	Retain qualified water treatment firm for the following:

a.	Supervision of installation of chemical feeding and treatment control equipment, and of initial application of water treatment

b.	Supply and release title to chemicals for initial cleaning, chemicals for required water treatment, equipment for feeding water treatment chemicals, equipment for control of water treatment, written instructions for application and control of initial cleaning and of water treatment, material Safety Data Sheets for each cleaning and treatment chemical and test equipment and reagents

NOTE: THE TYPE OF TEST EQUIPMENT SHALL BE SUITABLE FOR THE VARIOUS CHEMICAL TREATMENTS RECOMMENDED BY THE WATER TREATMENT CONSULTANT AND HIS REPORT SHOULD CONTAIN TEST EQUIPMENT REQUIREMENTS. THE FOLLOWING IS A GUIDE. ADD, DELETE OR MODIFY ITEMS AS RECOMMENDED BY THE WATER TREATMENT CONSULTANT

c.	Slide comparators:

(1)	PH range 6.8 to 8.2, 8.0 to 9.4, 4.0 to 11.0.

(2)	Phosphate range 5 to 100 mg/l P04.

(3)	Molybdate range 5 to mg/l NaMo04.

d.	Drop test sets:

(1)	Chloride, 1 drop equals 10 (25, or 50) mg/l NaCl

(2)	Phosphonate: 1 drop equals 2 mg/l organophosphorus sequestering agent

(3)	Sulfite, 1 drop equals 5 mg/l Na2S03.

(4)	Total hardness, 1 drop equals 10 mg/l as CaCO3. For softened water: 1 drop equals 2 mg/l as CaCO3

e.	Water sample bottles.

f.	Water treatment log sheets.

g.	Corrosion test coupons and 4 pass carbon steel apparatus in accordance with ASTM D2688 Method B for all water systems (except steam boilers)

2.	Supervise continuing water treatment.

a.	A qualified technical representative shall visit premises at least monthly for the following:

(1)	Review operating and water treatment log sheets, collect sample of water from each treated system for analysis by water treatment firm, and if needed recommend adjustments or changes in treatments

(2)	Provide written report of each service visit to operating engineer including water treatment firm's analyses of samples, comments on sigificance of these analyses and on review of log sheets, and recommendations, if any, for adjustments or changes in treatment programs

(3)	Provide first 30 days, next 60 days and subsequent quarterly corrision coupon examination reports indicating the corrosion rate and condition of the coupons

(4)	Water treatment shall be applied concurrently with operation of each system for one (1) year after acceptance by Owner

NOTE: FOR COMPLETE VENDOR APPLIED WATER TREATMENT SERVICE BY WATER TREATMENT FIRM, USE THE FOLLOWING

F.	Description of water treatment service.

1.	Retain qualified water treatment firm for complete water treatment service including

UPPLY

a.	Supply and release title to equipment for feeding water treatment chemicals and equipment for control of water treatment

b.	Supply for use for duration of contract, equipment for feeding water treatment chemicals, equipment for control of water treatment and corrision test coupons and 4 pass carbon steel apparatus (ASTMD 2688 Method B

UPPLY

c.	Supervise installation of chemical feeding and treatment control equipment. Furnish and apply all chemicals for initial cleaning and for water treatment. Maintain complete chemical control of treatment

d.	Qualified service representative shall visit premises at least monthly for collecting samples of water from each treated system for field testing and analysis at firm's laboratory, inspect all chemical feeders and treatment control equipment, making any necessary adjustments to maintain treatment control and install and collect corrosion coupons first 30 days, next 60 days and subsequent quarterly coupon examination reports

e.	Water treatment firm shall relieve operating staff and contractor of all responsibility for chemical handling, water testing and adjusting water treatment equipment. Maintenance of treatment equipment will not be included

f.	Treatment period: Water treatment shall be applied concurrently with operation of each system for 1 year after final acceptance by Owner. If operation is to be delayed after filling: Upon chemical cleaning and filling, apply chemical treatment and circulate water in system until chemical concentration is uniform and of desired range for lay-up

WATER

G.	Treatment

NOTE: THE FOLLOWING IS A GUIDE AND MAY BE MODIFIED BY WATER TREATMENT CONSULTANT. ANY SYSTEM WITH ANTIFREEZE SOLUTION SHALL BE FILLED WITH AN ANTIFREEZE CONTAINING CORROSION INHIBITORS SATISFACTORY FOR FERROUS AND NON-FERROUS METALS, AND SHALL REQUIRE NO OTHER TREATMENT CHEMICAL ADDITION

1.	Condenser water system treatment shall be as follows:

a.	Phosphonate-polymer, polyphosphate-polymer, or other chromate-free treatment approved by consulting engineer.

(1)	Liquid form shall be suitable for pumping directly from drums into condenser water system and shall be supplied in 55 gallon drums.

(2)	Dry form shall be suitable for feeding with hydraulic feeders and shall be supplied in 25 lb containers

b.	Biocides shall be two different types of treatment for alternating application and shall be EPA registered for use in recirculating cooling water system. Compounds of mercury, copper or arsenic will not be permitted. Treatment shall be in accordance with EPA approved label

c.	Blowdown, shall be controlled automatically by condenser water conductivity. Maintain maximum chloride concentration in condenser water ----- times concentration in make-up water. For rate, refer to Treatment Schedule at end of this Section

d.	For PH range, refer to treatment schedule at end of this section

e.	For Side Stream Filtration see Equipment.

NOTE: INSERT PROPER VALUE.

2.	Chilled water system, treatment shall be as follows:

a.	For pH range, refer to Treatment Schedule at end of this Section.

b.	Mixture of nitrite, borax and tolyltriazole or equivalent non-ferrous inhibitor, maintaining minimum concentration as noted in Treatment schedule at end of this Section

c.	See Equipment for Side Stream Filtration.

3.	Hot water system shall be as follows:

a.	For pH range, refer to Treatment Schedule at end of this Section.

b.	Mixture of sodium nitrite, borax and tolyltriazole or equivalent non-ferrous inhibitor, maintaining minimum concentration as noted in Treatment Schedule at end of this Section

c.	See Equipment for Side Stream Filtration.

4.	Humidifiers:

OIL

a.	Spray coil type:

b.	Pan type:

c.	Spray coil and pan types:

OIL

(1)	See treatment schedule at end of section for corrision/scale inhibitor and organic dispersant.

(2)	For pH range, refer to Treatment Schedule at the end of this Section.

(3)	Biocides: If significant slime is detected after operation, provide two different types of treatment for alternating application. Treatment shall be EPA registered for use in air washers or humidifiers and shall be non-volatile and odorless. Compounds of mercury, copper or arsenic will not be permitted. Treatment shall be in accordance with EPA approved label

d.	For external treatment with demineralized and UV sterilizers: See Equipment

NOTE: UNION CARBIDE HAS RECOMMENDED THAT CORROSION INHBIBTORS DIETHYLETHANOLAMINE AND DIMETHYLETHANOLAMINE (MORLEXR CORROSION INHIBITORS DEEA AND DEMA) ARE NOT TO BE USED IN STEAM WHERE STEAM CONTAINING THESE PRODUCTS MAY BE USED FOR DIRECT HUMIDIFICATION

H.	Steam boiler system:

1.	Makeup water shall be softened and demineralized.

2.	Feed water shall be deaerated. Oxygen seavanger shall be added to the deaerator storage section

3.	Boiler water: For initial fill, add catalyzed sodium sulfite at minimum rate of 1 lb per 1,000 gallons of water to provide corrosion protection. Add sodium phosphate-polymer or sodium phosphate-chelant and sodium sulfite (if no deaerator). Provide blowdown at surface and bottom (mud drum)

4.	Condensate: Add volatile neutralizing amine and filming amine.

5.	Treatment concentrations, refer to Treatment Schedule at end of this Section

2)	RELATED WORK AND REQUIREMENTS

A.	Requirements of GENERAL CONDITIONS, DIVISION No. 1 and Section GENERAL PROVISIONS FOR HEATING, VENTILATING AND AIR CONDITIONING WORK apply to all work in this Section

NOTE: EDIT TO SUIT PROJECT REQUIREMENTS. INCLUDE ONLY SECTIONS DIRECTLY AFFECTING WORK OF THIS SECTION

B.	Related work in the following Sections:

1.	STEAM SYSTEM.

2.	CHILLED WATER SYSTEM.

3.	HOT WATER SYSTEM.

4.	CONDENSER WATER SYSTEM. (Package Cooling Towers

5.	CONDENSER WATER SYSTEM. (Field Assembled Towers

6.	-----.

3)	REFERENCE STANDARDS

A.	Published Specifications' standards, tests or recommended methods of trade, industry or governmental organizations apply to work in this Section

B.	Comply with all applicable national, state and local codes and refer to Section GENERAL PROVISIONS FOR HEATING VENTILATING AND AIR CONDITIONING WORK for additional Reference standards

4)	QUALITY ASSURANCE

A.	Refer to Section GENERAL PROVISIONS FOR HEATING, VENTILATING AND AIR CONDITIONING WORK for Guarantee and other Quality Assurance requirements

5)	SUBMITTALS

A.	Submit drawings for equipment and piping, including locations of connections to system

Part 2 -	PRODUCTS

1)	BASE BID MANUFACTURERS

A.	Water Treatment Service: Betz Laboratories, Dearborn Chemical Co., Drew Chemical Co., Metropolitan Refining Co., Mogul Corp., Nalco Chemical Co., Olin Water Services, Virginia Chemicals, Inc., and Vulcan Laboratories, Inc

B.	Chemical feed pumps: Liquid Metering Inc., Madden Co., Milton Roy Co., Neptune Chemical Pump Co. and Precision Control Products Corp

C.	Filters: Knight Filters, Commertial Filters, Neplume Co, Yardley Corp, and Proccess and Cooling Water Filtration Systems

D.	Water Softeners: Water Refining, Bruner, Permutit and StaRite.

2)	PIPING AND CHEMICALS

A.	Refer to Section PIPING for water treatment solution piping requirements and city water piping requirements

B.	Chemicals shall be as noted in paragraph E of article 1.01 or in accordance with approved recommendations of water treatment firm

3)	CHEMICAL FEEDERS

A.	Hydraulic Fee Devices: Separate gravity feeders shall be provided for corrision inhibitor, PH modifier, biocide and bleed. Feed rate shall be as recommended by the water treatment contractor. For each feeder provide one stand and one water collector

B.	Proportioning pump type for condenser water system: Separate diaphragm type pumps with motors, as required, shall be provided for inhibitor solution, pH modifier solution, biocide solution, and dispersant solution. For feed rate, see Chemical Feeder Schedule at end of this Section. Spare parts for each pump shall include 1 replaceable diaphragm, 1 set suction and discharge valves and 1 year's supply of lubricant and hydraulic fluid.

C.	By-pass shotfeeder for chilled water and hot water (heating) and glycol systems shall be welded steel construction. For capacity, refer to Chemical Feeder Schedule at end of this Section. Design and installation as noted. Insulate shot feeder for chilled water system and include filter bags for glycol system

D.	Proportioning pump for steam boiler system shall be as specified for condenser water system complete with reservoir tank. For reservoir tank capacity see chemical feeder schedule at end of this section. Reservoir tank shall be plastic or plastic-lined steel and shall be complete with

NOTE: IF TREATMENT FORMULATION IS LIQUID, DISSOLVING BASKET AND AGITATOR MAY BE WAIVED

1.	Perforated dissolving basket and agitator, strainer, gauge glass or equivalent for external observation of liquid level, flushout and vent connections and drain connections, make-up soft water connection with air gap to prevent backflow of treatment chemical into portable water line, low level switch and coated steel or plastic dust cover

2.	For sulfite or hydrazine, provide additional floating cover (plastic donut or plastic balls)

4)	CONTROLS

NOTE: OPTION(S) SELECTED: FOR CONTROL METHODS MORE THAN ONE OPTION MAY BE NEEDED, INDICATE WHICH OPTION SELECTED. FOR EXAMPLE, TIMER CONTROL OF CHEMICAL FEED PUMPS PLUS AUTOMATIC CONDUCTIVITY CONTROL OF BLOWDOWN, OPTION 2 & 3

A.	Condenser water system.

NOTE: FOR SYSTEMS UNDER 300 TONS.

ONTROL

1.	Hydraulic feeders:

a.	Gravity feed from the tower return water.

b.	Variable inlet size.

c.	External housing (for forced draft towers).

d.	Sulphite feeders for bleed and feed.

2.	Timer control of chemical feed pumps:

a.	Percentage timer shall permit operation of inhibitor feed pump and adjustable percentage of operating time.

b.	Seven day timer shall permit operation of biocide feed pump at pre-set intervals.

c.	Water meter timer: 0 - 150 sec.

d.	Agitator timer: 0-120 min.

e.	Blow down delay timer: 0-120 min.

f.	pressure switch, flow switch, or electrical interlock with condenser water circulation pumps.

g.	Motor controllers.

h.	Controls mounted in metal cabinet and pre-wired using color codes

i.	Water meter with electrical contractor.

3.	Automatic conductivity control of blowndown: Conductivity (total dissolved solids) controller shall be as follows

a.	All solid state circuitry.

b.	Temperature compensated linear output.

c.	Indicating meter with recorder output capabilities

d.	Control range 0 to 6,000, 0 to 1000, 0 to 5000 micromhos/cm.

e.	Accuracy plus or minus 1 percent of full scale range

f.	Panel lights indicating power on and blowdown on.

g.	Press-to-test panel button.

h.	High and low level alarms, alarm points plus or minus 15 percent of set point, and contacts for audible alarm and for remote indication

i.	Flow-through sensor, carbon type, cleanable integral flow switch, 125 psig working pressure to 125 deg F

j.	Positive manual override.

(1)	Electrical requirements shall be 115 volts, 60 Hz, 50 watts for controller circuits, 10 amp relay contacts or as needed for actuating blowdown valve

k.	Controls mounted in NEMA 12 coated steel cabinet with hinged door to inner control panel, and pre-wired using color code

4.	Automatic conductivity control of blowdown and chemical (inhibitor) feed pump: Conductivity (total dissolved solids) controller shall be as follows

a.	All solid state circuitry.

b.	Temperature compensated linear output.

c.	Indicating meter with digital readout and recorder output capabilities

d.	Control range 0 to 6,000, 0 to 1,000, 0 to 3,000, 0 to 5,000, micromhos/cm

e.	Accuracy plus or minus 1 percent of full scale range

f.	Panel lights indicating power on and blowdown on.

g.	Press-to-test panel button.

h.	High and low level alarms, alarm points plus or minus 15 percent of set point, and contacts for audible alarm and for remote indication

i.	Flow-through sensor, carbon type, cleanable integral flow switch, 125 psig working pressure to 125 deg F

j.	Positive manual override.

k.	Electrical requirements: 115 volts, 60 Hz, 50 watts for controller circuits, 10 amp relay contacts or as needed for actuating blowdown valve

l.	Controls mounted in NEMA 12 coated steel cabinet with hinged door to inner control panel, and pre-wired using color code

m.	Connections for actuating chemical feed pump when blowdown valve is accuated

5.	Automatic pH control of chemical (pH modifier) feed pumps. pH controller shall be as follows

a.	All solid state circuitry.

b.	Temperature compensated linear output.

c.	Indicating meter readable to 0.05 pH unit, with digital readout and recorder output capabilities

d.	Control range 2-12 pH, for either acid or alkali addition

e.	Accuracy plus or minus 0.1 pH unit from set point.

f.	Panel lights indicating power on and control state

g.	Press-to-test panel button.

h.	High and low level alarms, alarm points separately adjustable and contacts for audible alarm and for remote indication

i.	Flow-through sensor with glass electrode and adjacent pre-amplifier to eliminate interferences, unbreakable reference electrode containing one year supply of KCL and non-clogging reference junction, integral flow switch, 125 psig working pressure to 125 deg F

j.	Electrodes cleanable.

k.	Positive manual override.

l.	Electrical requirements shall be 115 volts, 60 Hz, 50 watts per controller circuits, 10 amp relay contacts or as needed for actuating blowdown valve and chemical feed pump

m.	Controls mounted in NEMA 12 coated steel cabinet with hinged door to inner control panel and pre-wired using color code

6.	Automatic conductivity control of blowdown (and inhibitor feed pump) with pH control of chemical (pH modifier) feed pump.

a.	Cooling tower water controller (conductivity and pH) shall be as follows

(1)	All solid state circuitry.

(2)	Temperature compensated linear output.

(3)	Indicating meters with recorder output, pH readable to 0.05 pH unit capabilities

(4)	Control ranges:

(a)	Conductivity: 0 to 6,000, 0 to 1000, 0 to 3000, 0 to 5000 micromhos/cm. Accuracy shall be plus or minus 1 percent of full scale range

(b)	pH: 2-12 pH, for either acid or alkali addition. Accuracy shall be plus or minus 0.1 pH unit from set point

(5)	Panel lights indicating power on and control state

(6)	Press-to-test panel button for each alarm point.

(7)	High and low level alarms, conductivity alarm points plus or minus 15 percent of set point, and contacts for audible alarm and for remote indication

(8)	Flow-through sensors, cleanable, integral flow switch, 125 psig working pressure to 125 deg F. For conductivity, provide carbon type. For pH, glass electrode with adjacent pre-amplifier to eliminate interferences, unbreakable reference electrode containing one year supply of KCl and non-clogging reference junction

(9)	Positive manual override.

(10)	Electrical requirements shall be 115 volts, 60 Hz, 50 watts for controller circuits, 10 amp relay contacts or as needed for actuating blowdown valve and chemical feed pumps

7.	Automatic conductivity control of blowdown (and inhibitor feed pump), pH control of chemical (pH modifier) feed pump, and corrosion rate/pitting monitor.

ONTROL

a.	Cooling tower water controller (conductivity, pH, and corrosion rate/pitting) shall be as follows

(1)	All solid state circuitry.

(2)	Temperature compensated linear output.

(3)	Indicating meters with recorder output capabilities, pH readable to 0.05 pH unit

(4)	Control ranges:

(a)	Conductivity: 0 to 6,000, 0 to 1000, 0 to 3000, 0 to 5000, micromhos/cm. Accuracy shall be plus or minus 1 percent of full scale range

(b)	pH: 2-12 pH, for either acid or alkali addition. Accuracy shall be plus or minus 0.1 unit from set point

(c)	Corrosion rate/pitting: X1, X10, X100. Accuracy plus or minus 1 percent of full scale

(5)	Panel lights indicating power on and control state

(6)	Press-to-test button for each alarm point.

(7)	High and low level alarms for pH and conductivity, conductivity alarm points plus or minus 15 percent of set point

(8)	High level alarm for corrosion rate/pitting, alarm at 2 times set point

(9)	Flow through sensors, cleanable, integral flow switch, integral flow switch, 125 psig working pressure to 125 deg F:

(a)	Conductivity: Carbon type.

(b)	pH: Glass electrode with adjacent pre-amplifier to eliminate interferences, unbreakable reference electrode containing one year supply of KCl and non-clogging reference junction.

(c)	Corrosion rate/pitting: Linear polarization type, mild steel

(10)	Positive manual override.

(11)	Electrical requirements: 115 volt, 60 Hz, 50 watts for controller circuits, 10 amp relay contacts or as needed for actuating blowdown valve and chemical feed pumps

(12)	Three proportioning mode to actuate inhibitor chemical feed pump, with front panel selector switch for desired mode as follows

(a)	In blowdown mode, conductivity controller also actuates inhibitor chemical feed pump

(b)	In pH controller mode, each pH modifier feed pump signal also actuates inhibitor chemical feed pump

(c)	In remote mode, inhibitor chemical feed pump shall be actuated by contact head water meter, timer, or other external means

CONTROL

b.	Biocide feed pumps shall be controlled by a 7 day timer, 24 hour adjustable in 15 minute increments. For dispersant feed pump, alternate system shall proportion feed of dispersant chemical with inhibitor chemical, with an adjustable ratio of 1:10 to 10:1

c.	Fail-safes and alarms: On loss of flow, flow interlock shall provide alarm indication and lockout of all control outputs and chemical feeds. pH interlock, shall provide alarm indication and lock-out all chemical feed pumps and open blowdown valve to flush water from the system. Corrosion rate interlock shall provide alarm indication and lock-out all chemical feed pumps and open blowdown valve to flush water from system

d.	Low liquid level alarms: System shall monitor chemical solution level in drums of inhibitor chemical, pH modifier (acid or alkali), biocide, and dispersant. Alarm probes for use in 55 gallon drums and connected with flexible cable shall signal output for local alarm and for remote indication

B.	Steam boiler system, Automatic conductivity control of blowdown: Conductivity (total dissolved solids) controller shall be as follows

1.	All solid state circuitry.

2.	Temperature compensated linear output.

3.	Indicating meter with digital readout and recorder output capabilities

4.	Control range 0-5,000, 0, 2000, 0-10,000, micromohs/cm.

5.	Accuracy plus or minus 1 percent of full scale range.

6.	Panel lights indicating power on, blowdown on, high and low conductivity

7.	Press-to-test panel button.

8.	High and low level alarms, alarm points plus or minus 15 percent of set point, and contacts for audible alarm and for remote indication

9.	Timing circuit which periodically opens surface blowdown valve for short sampling period, adjustable interval between sampling periods

10.	Flow-through sensor probe stainless steel, 250 psig working pressure

11.	Positive manual override.

12.	Electrical requirements: 115 volts, 60 Hz, 3 amp relay contacts or as needed for actuating blowdown valve

13.	Controls mounted in NEMA 12 coated steel cabinet with hinged door to inner control panel, and pre-wired using color code

14.	Blowdown assembly: Minimum 3/4 inch NPT input and output couplers, containing motorized valve, probe and orifice union furnished with 1/8 inch orifice plate and 3 extra plates supplied (3/16 inch, 1/4 inch, and 5/16 inch)

C.	Humidifier system:

1.	Automatic conductivity control of blowdown.

a.	Conductivity (total dissolved solids) controller.

(1)	All solid state circuitry.

(2)	Temperature compensated linear output.

(3)	Indicating meter with digital readout and recorder output capabilities

(4)	Control range 0-5,000, 0-2,000, 0-10,000 micromhos/cm.

(5)	Accuracy plus or minus 1 percent of full scale range.

(6)	Panel lights indicating power on, blowdown on, high and low conductivity

(7)	Press-to-test panel button.

(8)	High and low level alarm, alarm points plus or minus 15 percent of set point, and contacts for audible alarm and for remote indication

(9)	Timing circuit which periodically opens surface blowdown valve for short sampling period, adjustable internal between sampling periods

(10)	Flow-through sensor probe stainless steel, 250 psig working pressure.

(11)	Positive manual override.

(12)	Electrical requirements: 115 volts, 60 Hz, 3 amp relay contacts or as needed for actuating blowdown valve

(13)	Controls mounted in NEMA 12 coated steel cabinet with hinged door to inner control panel, and prewired using color code

(14)	Blowdown assembly: Mininum 3/4 in. NPT input and output couplers, containing motorized valve, probe and orifice union furnished with 1/8 in. orifice plate and 3 extra plates supplied 3/16 in., 1/4 in. and 5/16 in

D.	Provide written instructions for installation, start-up, operation, maintenance, and trouble-shooting for automatic water treating control systems. A qualified representative of automatic control equipment manufacturer shall check and approve installation, supervise start-up, and provide minimum 4 hours instruction in system operation to owner's operating personnel

NOTE: PRETREATMENT FOR SOFTENER ARE NECESSARY WHENEVER WELL WATER IS INVOLVED. CHECK WITH WATER TREATMENT CONSULTANT FOR PROPER TREATMENT

E.	External purifiers:

1.	Cooling tower sand filter:

a.	SS 304 or approved equal housing complete with:

(1)	Automatic backwash valving with City water.

(2)	Sand media of 10 microns solid removal capabilities.

(3)	Booster pump --------- gpm with integral suction strainer.

2.	Closed loop side stream filters.

a.	Bag filter type.

(1)	Polyester monfilament, each with handles.

(2)	Size - see schedule.

b.	Housing carbon steel.

(1)	Teflon gasket.

(2)	Pressure gauge.

(3)	Flow indicator.

(4)	Bottom outlet style.

3.	Condensate filters.

a.	Bag filter type.

(1)	120 gpm per bag.

(2)	Polyester monfilament bag, each with handles.

(3)	Size - see schedule.

b.	Housing SS 304.

(1)	Teflon gaskets.

(2)	Pressure gauge.

(3)	Flow indicator.

(4)	Side outlet style.

F.	Water Softener

NOTE: PRETREATMENT FOR SOFTENERS ARE NECESSARY WHENEVER WELL WATER IS INVOLVED. CHECK WITH WATER TREATMENT CONSULTANT FOR PROPER TREATMENT

1.	Cation exchanger resin type water softener shall be packaged and factory assembled, to supply zero hardness water by test. Softner shall be fully automatic regeneration with dual softener tanks. Supply written instructions for installation, operation, maintenance

a.	Tanks shall be as follows:

(1)	For exchange resin, tanks shall be carbon steel lined with epoxy phenolic resin, minimum 6 mils thick. Tank shall be supported on approved steel legs and pressure tested at 50 percent over design pressure. Side (straight) height shall allow minimum 50 percent freeboard expansion of resin above normal bed level during backwashing. For underdrain system, tank shall be inverted head type, or false bottom or header-lateral pipe assembly both with slotted, non clogging plastic/SS distributors for uniform flow distribution during operation, backwash and regeneration. Underdrain system shall be gravel sub-fill (where required). Fill shall be selected quartz, size graded, minimum 3 sizes, minimum depth equals 9 inches and free from carbonates and ironbearing impurities

(2)	Brine (combined salt storage, solution, and brine measuring) tanks shall be constructed of rigid polyethylene or steel coated internally with bituminous enamel or epoxy resin. Tank shall be complete with dust cover, (coated steel or rigid plastic), elevated salt plate for collection of concentrated brine, brine level control and automatic air eliminator

b.	Cation exchange resin shall be non-phenolic polystyrene sulfonate bead type. Exchange capacity shall be 30 kg as CaCO3/cu ft resin, or 20 kg as CaCO3/cu ft resin regenerated with 6 lb salt/cu ft resin. Effective size shall be 0.40-0.50 min. Screen grading shall be (wet) 16 to 50 mesh (U.S. Standard Screens), not more than 2 percent through 50 mesh

c.	Automatic control:

(1)	Regeneration shall be automatic as follows:

EGEN

(a)	Actuated by automatic reset contact head water meter on soft water line

(b)	Actuated by hardness sensor in softener tank.

(c)	Actuated by time clock.

EGEN

(2)	Provide electrically operated hydraulic multiport valve with indicating light, program indicator and cycles for automatic backwash, brine injection, slow rinse, fast rinse, and service

(3)	Lockout shall prevent both softener tanks from being in regeneration cycle simultaneously

d.	Piping shall be standard weight red brass with manual hard water by-pass, dielectric insulating type fittings for connecting dissimilar metals, sample cock for soft water sampling from each softener tank and pressure gauges at inlet and outlet of each softener tank

G.	Dearerator

EAER

1.	To supply boiler feedwater containing not more than 0.03 ml. oxygen per liter of water

2.	To supply boiler feedwater containing not more than 0.005 ml oxygen per liter of water

EAER

Part 3 -	EXECUTION

1)	INSTALLATION

A.	Chemical feeders shall be proportioning pump type for condenser water system with pumps mounted at a suitable height for pumping chemical treatment solutions directly from supply drums to condenser water system. By-pass chemical feeders shall be copper, plastic or plastic-lined steel drip pan with drain under feeder. For boiler water system, feeder shall be installed on top of reservoir tank maximum 4 ft above floor with copper drip pan and drain under tank and pumps

B.	Piping:

1.	For proportioning pump piping, provide pressure gauge on discharge line, pressure relief valve in discharge piping and suction piping for pumping from chemical solution drums. Provide drain connections at low points of piping

2.	For by-pass feeders, provide flow indicators, unions and ball valves at the connection. Provide piping across system recirculating pumps.

NOTE: FOR CONDENSER WATER SYSTEMS AND FOR SPRAY COIL AND/OR PAN HUMIDIFIER

YS

3.	Condenser water systems shall be as follows:

4.	Condenser water and humidifier systems shall be as follows:

5.	Humidifier systems shall be as follows:

YS

a.	Provide approved blowdown manifold with solenoid or motorized blowdown valve, flow indicator and manual by-pass valve and piping to waste. Size as recommended by water treatment firm. Bleedoff rate shall be controllable.

b.	Provide accessible city water hose connection at system basins for cleaning and flushing

c.	Provide sample stream injection assembly including 316 stainless steel injection pipe, all necessary compression connectors, safety retaining ring, Threadolet and full port gate valve. Size as recommended by water treatment firm

6.	Provide drain connections at low points of system.

C.	System connections and feeder locations shall be approved in field by water treatment firm before installation is begun

D.	Provide installation supervision and start-up of automatic water treatment control system for condenser water by qualified representative of control equipment manufacturer. Provide minimum of 4 hours instruction in system operation to Owner's operating personnel

2)	INITIAL CLEANING OF SYSTEMS

A.	Prior to operation, clean system as specified in Section PIPING with detergent solution plus non-foaming wetting agent to remove cutting oil, excess pipe joint compound, finely divided solids and other foreign materials. Upon completion of cleaning, system shall be dosed with chemicals to obtain specified treatment conditions

3)	SCHEDULES

NOTE: INSERT REQUIRED DATA

A.	Treatment:

1.	System: -----.

NOTE: LIST AS MANY TREATMENTS AS REQUIRED. USE "RANGE" "MINIMUM" OR "MAXIMUM" AS APPROPRIATE

a.	Minimum Treatment Concentration: ----- mg/l as -----

b.	pH Range: ----- to -----.

AXIMUM

c.	Maximum Conductivity: ----- micromhos/cm.

d.	Maximum Cycles of Concentration: -----.

AXIMUM

e.	Maximum Blowdown Rate: ----- gpm.

NOTE: ITEMS C. AND D. ABOVE ARE NOT APPLICABLE TO CHILLED WATER OR HOT WATER SYSTEMS. MAXIMUM BLOWDOWN RATE IS NOT THE TYPICAL OR CONTINUOUS BLEEDOFF RATE, BUT THE CAPACITY THAT SHOULD BE PROVIDED TO ALLOW FOR INTERMITTENT BLOWNDOWN, AND FOR INCREASED BLOWDOWN TO REDUCE CYCLES OF CONCENTRATION IN THE EVENT THAT THEY EXCEED THE DESIRED MAXIMUM AT ANY TIME

B.	Chemical Feeders:

1.	Proportioning Pump Type:

NOTE: FOR STEAM BOILERS PROVIDE ONE FOR EACH BOILER WITH COMMON RESERVOIR TANK PLUS ADDITIONAL PUMP AND RESERVOIR TANK FOR SULFITE IF DEAERATOR IS INCLUDED

a.	System: -----.

b.	Number required: -----.

c.	Maximum Feed Rate: to be supplied by water treatment firm

d.	Motor HP: to be supplied by water treatment firm.

2.	Water Meter with Electrical contactor:

a.	System: -----.

b.	Number required: -----.

c.	Maximum flow rate: To be supplied by water treatment firm.

d.	Connection size: -------.

e.	Type: ---------

3.	By-pass type:

a.	System: -------------.

b.	Number required: -------------.

c.	Minimum capacity: ------------- gallons.

C.	External purifiers:

1.	Filter

a.	System: ________

b.	Number required: -----------

c.	Maximum flow rate: to be supplied by water treatment firm.

d.	Pressure drop: ---------

D.	Water Softener:

1.	Resin tanks:

a.	Working pressure: ----- psig.

b.	Size: ----- in. x ----- in. on straight.

c.	Maximum flow rate each: ----- gpm.

d.	Pressure drop at max. flow rate: ----- psig.

e.	Volume resin per unit equals ----- cu ft.

f.	Softened water capacity between regenerations: ----- gal at ----- lb salt/cu ft

2.	Brine tank: Size: ----- inch x ----- inch straight.

E.	Deaerator:

1.	Design pressure: ----- psig.

2.	Capacity: ----- lb water/hr at ----- deg F inlet water temperature

F.	Corrosion coupon assembly and apparatus:

1.	Number of apparatus required: --------

2.	Type of coupons: ---------

3.	Number of coupons: --------