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SECTION 22 67 13 – HIGH PURITY WATER SYSTEMS (RO)
PART 1 - GENERAL
1.01
RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General Conditions and Division
01 Specification Sections, apply to this Section.
B. Specifications throughout all Divisions of the Project Manual are directly applicable to this
Section, and this Section is directly applicable to them.
1.02
SUMMARY
A. The water conditioning system/supplier shall be totally responsible for the supply and
installation of the water treatment system to include the central RO water system, the building
supply and return loop system, the final connection to the RO water outlet and quality
assurance/quality controls of the entire system to assure meeting quality standards for
CAP/NCCLS reagent water Specifications Type III at the point of use.
B. The system/supplier shall guarantee that the water quality coming from the central system is
the same quality at any point of use in the RO water loop system at initial start-up.
C. Provide an RO system with capacities and electrical characteristics as scheduled on Contract
Drawings. Scheduled gallons per day (24 hour period) shall be based on a feed water
temperature of 77 degrees F.
D. Provide complete system as manufactured by Marlo, Osmonics or Ionpure.
1.03
REFERENCE STANDARDS
A. The latest published edition of a reference shall be applicable to this Project unless identified
by a specific edition date.
B. All reference amendments adopted prior to the effective date of this Contract shall be
applicable to this Project.
C. All materials, installation and workmanship shall comply with the applicable requirements and
standards addressed within the following references:
1. 2012 Edition of the International Plumbing Code.
2. Texas Water Code Chapter 37
3. Texas Health & Safety Code Chapter 341
4. Title 30 Texas Administrative Code, Chapter 30, Subchapter H
5. Underwriters Laboratories Listings.
6. 2011 Edition of the National Electric Code
7. ASME - Boiler and Pressure Vessel Code.
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8. ASTM D 3222 - Standard Specifications for Unmodified PVDF molding material.
9. ASTM D 638 - Standard Test Method for Tensile Properties of Plastic.
10. ASTM D 790 - Standard Test Method of Flexural Properties of Unreinforced and
Reinforced Plastics and Electric Insulating Materials.
1.04
QUALITY ASSURANCE
A. Manufacturer’s name and contact information shall be permanently marked on equipment.
B. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70,
Article 100, by a testing agency acceptable to authorities having jurisdiction, and marked for
intended use.
C. Manufacturer Qualifications: Company shall have minimum three years documented
experience specializing in manufacturing the products specified in this section.
D. Installer Qualifications:
1. Company shall have minimum three years documented experience specializing in
performing the Work of this section and be licensed by the State of Texas to install
water treatment equipment.
2. Installation of plumbing systems shall be performed by individuals licensed by the Texas
State Board of Plumbing Examiners as a Journeyman or Master Plumber. Installation
may be performed by Apprentice Plumbers provided they are registered with the Texas
State Board of Plumbing examiners and under direct supervision of a licensed plumber.
All installation shall be supervised by a licensed Master Plumber.
3. Site personnel, involved with PVDF piping installation, shall undergo training and
certification from an authorized manufacturer's representative prior to performing any
jointing operations on site. Each welder shall be fully trained on the welding equipment for
the particular project and will be required to demonstrate the full process of welding.
Training shall include set up of the tool, loading of the pipe and fittings, alignment of the
tool, and the weld process. Training will also include minor maintenance techniques to
keep tools in ideal operating conditions.
4. All installers of water treatment equipment must meet the qualifications and be licensed
according to the State of Texas.
1.05
SUBMITTALS
A. Product Data:
1. Code and Standards compliance, manufacturer's data for pipe, fittings, valves, controls,
water testing kits, and all furnished specialties, and accessories.
2. Include rated pressures, temperatures, capacities and operating characteristics.
3. Manufacturer’s installation instructions.
B. Record Documents:
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1. Shop Drawings: Include plans, elevations, sections, details, and connections to piping
systems. Indicate size, profiles, and dimensional service requirements of system based
on the specific components being installed.
2. Wiring Diagrams: Power, signal, and control wiring.
3. Manufacturer Certificates: Signed by manufacturers certifying that components comply
with requirements.
4. Maintenance service agreement.
5. Provide full written description of manufacturer’s warranty including special warranty
specified in this Section.
6. Source and Site quality-control test reports.
C. Operation and Maintenance Data:
1. Include manufacturer’s operation instructions, start-up data, trouble-shooting check lists.
2. Include system components manufacturer’s literature, servicing requirements, Record
Documents, installation instructions, exploded assembly views, replacement part
numbers and availability.
3. Include cleaning procedures, preventive maintenance schedule, preventive maintenance
recommendations and procedures.
4. Identify place of purchase, location and contact numbers of service depot and technical
support for each product installed.
1.06
DELIVERY, STORAGE AND HANDLING
A. Accept delivery of packaged high purity water equipment, storage vessel, etc. on Site in
factory fabricated containers with shipping skids and pipe end protectors in place. Inspect for
damage. Comply with manufacturers rigging and installation instructions.
B. All components and materials shall be new, undamaged, and free of rust.
C. Provide temporary protective coating and end plugs on valves not packaged within containers.
Maintain in place until installation.
D. Provide temporary end caps and closures on openings, connections, pipe and fittings.
Maintain in place until installation.
E. Protect piping systems from entry of foreign materials by temporary covers, completing
sections of the Work and isolating parts of completed system.
F. Protect all components and materials that are to be installed within this project from exposure
to rain, freezing temperatures and direct sunlight. EXCEPTION: Materials manufactured for
exterior locations.
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WARRANTY
A. Warranty: Include, but not limited to, coverage for the RO water system, storage tank, pumps,
softener system, all associated controls and accessories.
B. The system/supplier shall be responsible for the operation of the water treatment system for a
period of one year from the date of Substantial Completion. During this period the
system/supplier shall also be responsible for periodic ongoing training of the building
maintenance personnel. The vendor shall supply all the necessary consumables for the first
year of operation and include the labor to change out the consumables. A daily log indicating
the performance of the system will be kept by the building maintenance personnel and
reviewed by the system/supplier on a monthly basis.
1.08
MAINTENANCE SERVICE
A. Submit four copies of manufacturer's "Agreement for Continued Service and Maintenance,"
before Substantial Completion, for Owner's acceptance. Offer terms and conditions for
furnishing chemicals and providing continued testing and servicing to include replacing
materials and equipment. Include one-year term of agreement with option for one-year
renewal.
PART 2 - PRODUCTS
2.01
GENERAL
A. All materials shall meet or exceed all applicable referenced standards, federal, state and local
requirements, and conform to codes and ordinances of authorities having jurisdiction.
B. The RO water central system will consist of the following components and include the
interconnecting piping, valves, fittings, instrumentation, control wiring and electrical wiring to
the equipment.
1. Piping, Valves, Fittings
2. Multi-layer Filter
3. Activated Carbon Filter
4. Water Softeners
5. Reverse Osmosis System
6. Storage Tank
7. Level Controllers
8. Repressure Pumps
9. Ultraviolet Sterilizers
10. Final Filters
11. Instrumentation
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12. Control Panel
2.02
PIPING, VALVES AND FITTINGS
A. Pipe, valves and fittings from the reverse osmosis unit to include the supply and return
building loop system shall be SYGEF, SDR-11 through SDR-21 (or pipe schedule equivalent),
flame resistant, self-extinguishing polyvinylidene fluoride (PVDF) with heat fusion socket
connections.
B. Installation practices, including support spacing and joint fusion shall be in compliance with
manufacturer’s printed recommendations.
C. Material from which pipe, fitting and valves are manufactured shall conform to the standards
of ASTM D 3222. The PVDF material shall have a tensile strength of 7,800 psi and a flexural
strength of 10,750 psi when tested at 73F according to ASTM D 638 and ASTM D 790 and
shall be as manufactured by George Fischer Company or Simtech.
D. To ensure installation uniformity, all system piping components shall be the products of one
manufacturer.
E. All piping shall be thoroughly rinsed and flushed to remove all dirt and debris before
installation. After installation the Contractor shall flush the entire piping system with deionized
water to the satisfaction of the Owner.
F. Valves shall be diaphragm valve type and shall be manufactured of the same virgin,
unpigmented molding compound as the fittings to assure compatibility.
G. Diaphragm valves shall have PVDF body, PTEF diaphragm, seals, and seats. Valves shall
carry a pressure rating of 150 psi at a minimum of 68°F, and shall be of socket fusion design
as manufactured by George Fischer Company or Simtech.
H. The reverse osmosis pretreatment shall be piped by the system/supplier rigid copper using
“lead free” solder and install a pressure gauge and test port before and after each piece of
equipment. Each unit shall be installed using a “H” type 3-valve bypass. The person doing this
installation or person supervising this installation must possess a currently valid Texas
Department of Health Class III Certificate.
2.03
MULTI-LAYERED FILTER
A. Provide a multi-layered filter that which shall reduce particulate matter from the water in order
to lower the silt density index to lower than 5 and prevent particulate fouling of the RO
membranes. Tank shall be of electric welded pressure vessel quality low carbon steel
construction rated for 100 psig, working pressure and hydrostatically tested at 50% in excess
of the working pressure. Tank shall have threaded NPT connections on the service inlet and
outlet. Access opening for the tank shall include two 4” diameter or 4” x 6” elliptical handholes;
one in tophead and one in lower side shell. Support shall be structural steel strap legs welded
to lower tank head. Tank shall be sandblasted internally to white metal with 1 to 1-½ mil
anchor pattern, then coated with 8-10 mils DFT epoxy polyamide. The exterior surface shall
be cleaned and coated with 2-3 mils DFT rust resistant primer. Tank shall have sufficient
diameter and side shell height in order to provide sufficient freeboard space for bed expansion
without media loss during backwashing.
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B. Upper distribution system shall be of the baffle type to evenly distribute the water over the
entire tank area. Lower distribution system shall be of a proven design constructed with
individual fine slotted non-clogging polyethylene strainers arranged for even flow distribution
through the media bed. Slotted lateral arms are unacceptable. The distribution system shall
be embedded in a single layer subfill of washed 1/8” x 1/16” gravel to support the media bed.
C. The main operating valve shall be an industrial automatic multiport diaphragm type, slow
opening and closing, free of water hammer. The diaphragm assembly shall be fully guided on
its perimeter when pressure actuated from one position to another to assure a smooth reliable
shut-off without sticking. There shall be no contact of dissimilar metals within the valve and no
special tools shall be required to service the valve. The main operating valve shall be
manufactured by the manufacturer of the filter. Valve shall have a treated water sampling
cock. An automatic flow controller shall be provided to maintain proper backwash and flush
rates over wide variation in operating pressures and require no field adjustment.
D. The valve shall be operated by an electric time clock control with a 7 or 14 day calendar time
clock control capable of backwashing the filter at a preset time every day. It shall include a
manual override to permit manual initiation of backwashing and then return to automatic
operation.
E. Provide granular media (Multi-layered) consisting of three (3) distinct filter layers in addition to
a support layer. Each layer shall be of a selected density and particle size to stratify in the
same order following a backwash. The filter layers shall stratify with the coarsest layer at the
top and the finest layer at the bottom. Particle retention shall be 10 micron or larger.
F. Acceptable manufacturers: Watertech, Marlo, Culligan or Owner approved equal.
2.04
ACTIVATED CARBON FILTER
A. Provide an activated carbon filter that shall reduce chlorine from the water to a level not to
exceed <0.1 ppm (0.1 mg/1) as determined by an accepted water analysis of the treated
water when the unit is operated at design flow and in accordance with operating instructions.
In order to provide TOC reduction a maximum flow of 1 GPM per cubic foot of carbon. Tank
shall be of electric welded pressure vessel quality low carbon steel construction rated for 100
psig, working pressure and hydrostatically tested at 50% in excess of the working pressure.
Tank shall have threaded NPT connections on the service inlet and outlet. Access opening for
the tank shall include two 4” diameter or 4” x 6” elliptical handholes; one in tophead and one in
lower side shell. Support shall be structural steel strap legs welded to lower tank head. Tank
shall be sandblasted internally to white metal with 1 to 1-½ mil anchor pattern, then coated
with 8-10 mils DFT epoxy polyamide. The exterior surface shall be cleaned and coated with 23 mils DFT rust resistant primer.
B. Upper distribution system shall be of the baffle type to evenly distribute the water over the
entire tank area. Lower distribution the water over the entire tank area. Lower distribution
system shall be of a proven design constructed with individual fine slotted non-clogging
polyethylene strainers arranged for even flow distribution through the media bed. Slotted
lateral arms are unacceptable. The distribution system shall be embedded in a single layer
subfill of washed 1/8” x 1/16” gravel to support the media bed.
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C. The main operating valve shall be an industrial automatic multiport diaphragm type, slow
opening and closing, free of water hammer. The diaphragm assembly shall be fully guided on
its perimeter when pressure actuated from one position to another to assure a smooth reliable
shut-off without sticking. There shall be no contact of dissimilar metals within the valve and no
special tools shall be required to service the valve. The main operating valve shall be
manufactured by the manufacturer of the filter. Valve shall have a treated water sampling
cock. An automatic flow controller shall be provided to maintain proper backwash and flush
rates over wide variation in operating pressures and require no field adjustment.
D. The valve shall be operated by an electric time clock control with a 7 or 14 day calendar time
clock control capable of backwashing the filter at a preset time every day. It shall include a
manual override to permit manual initiation of backwashing and then return to automatic
operation. The valve shall have a 1-year parts warranty and vendor shall provide 1 year of
service warranty (labor).
E. Provide granular media (Activated Carbon) made from selected grades of bituminous coal
combined with suitable binders to give superior hardness and long life. It shall have an iodine
number of at least 850 and a minimum abrasion number of 75. Particle retention shall be forty
(40) micro or larger.
F. Acceptable manufacturers: Watertech, Marlo, Culligan or Owner approved equal.
2.05
SOFTENERS
A. A twin automatic water softener shall be provided to reduce water hardness, as CaCO3, to
less than 5 ppm, as determined by an accepted water analysis of the treated water, when the
unit is operated at design flow and in accordance with the operating instructions. The
automatic softening system shall consist of two resin tanks each with C-300 resinous zeolite.
Each unit shall operate at design flow rate with a pressure loss not exceeding 15 psi and a
peak flow rate with 25 psi loss.
B. The tanks shall have 50% or more freeboard, 100 psi working pressure and 150 psi test
pressure, with structural steel legs welded to the tanks. Tanks shall be sand blasted to bare
metal and internally lined with epoxy (Plastite 7133 or equal). Exterior shall be coated with a
rust preventative prime coat. The tank shall have a manhole in the top head. The lower
distribution system shall be PVC header lateral with individual PVC distributors: located to
equally distribute flow and require only one layer of gravel. The upper distributor shall be
baffle type.
C. The ion exchange resin shall be virgin high capacity sulfonated polystyrene type stable over
the entire pH range with good resistance to bead fracture from attrition or osmotic shock.
Each cubic foot of resin shall be capable of removing 30,000 grains of hardness as calcium
carbonated when regenerated with 15 pounds of sodium chloride and 20,000 grains of
hardness as calcium carbonate when regenerated with 6 pounds of sodium chloride.
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D. Provide an automatic brine measuring tank system for volume control of brine withdrawal and
brine refill from an external source. The system shall consist of a brine measuring tank and a
brine float assembly with brine transfer valve. Valves are pressure controlled through the
action of a float actuated pilot control valve. The brine tank shall be made of rigid 3/8” thick
rotationally molded polyethylene with cover. The brine float assembly is a diaphragm type
fitted with a float actuated pilot control valve (Clayton Model No. 122). The brine transfer valve
is a double acting diaphragm type pressured open and closed. Brine is transferred by gravity
or pressure pump system. Provide automatic controls to activate brine refill pump.
E. Each softener shall be automatic multiport diaphragm type with slow opening and closing and
free of water hammer. The pressure actuated valve shall move from one position to another
without friction. There will be no contact between dissimilar metals within the valve. Parts
subject to wear will be replaceable using common tools. The main control valve must be
manufactured by the manufacturer of the softening equipment. The valve shall be equipped
with an automatic self-adjusting brine injector to draw brine and rinse at a constant rate
regardless of water pressure in the 30 to 100 psi range. Each valve shall have a water
sampling cock. The regeneration shall be in this order: backwash, brine, slow rinse, fast down
flow rinse, service stand-by.
F. The controls shall have adjustable duration of the various steps in regeneration, allow for
push-button start and provide for complete manual operation. Regeneration shall be initiated
by an insertion type pulse generator and an installation fitting (tee/saddle) compatible with the
specified piping to house the sensor providing ease of removal for inspection without
disruption of the piping system. A 25 foot cable shall be provided for direct connection to the
electronic control device. A low voltage signal output from the flow sensor shall transmit flow
rate and volume totalization data directly to the electronic water treatment controller. Accuracy
shall be +/-1% over the full range and repeatable to +/-0.5% of all range. One flow sensor
shall be on the soft water outlet of each tank. Lockouts shall be provided to keep more than
one tank at a time from going into regeneration. Flow controls for backwash and flush shall be
fully automatic requiring no field adjustment.
G. Acceptable manufacturers: Watertech, Marlo, Culligan or Owner approved equal.
2.06
REVERSE OSMOSIS SYSTEM
A. The reverse osmosis system shall be capable of providing gallons per day, as scheduled on
Project Contract Construction Drawings, of permeate water with a Total Dissolved Solids level
of less than 15 ppm at 21 degrees C. This system shall be capable of being expanded to
increase capacity by twenty-five percent without the need to replace installed tanks, filters or
controls. The system shall operate at a 65% recovery rate.
B. The reverse osmosis system shall contain thin film composite, spiral-wound membranes
within FRP or stainless steel pressure vessels in a 2 x 1 x 1 x 1 brine staged array. Each
vessel shall have a working pressure rating of 300 psig at 100 degrees F.
C. The reverse osmosis system shall utilize a multi-stage centrifugal pump. The impellers and
diffusers shall be constructed of 316 stainless steel. The pump shall boost the supply
pressure by 200 PSI at design flow.
D. A prefilter system with 5 micron pleated cartridge filters shall be included. Prefilter sizing shall
be based on 1.0 gallon per minute per square foot of filter surface area. The filter housing
shall be constructed of polypropylene.
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E. All low pressure piping shall be Schedule 80 PVC or specially qualified thermoplastic tubing.
The high pressure piping shall be 316L stainless steel or special high pressure thermoplastic
tubing. All welded pipe shall be passivated.
F. All low pressure valves shall be PVC ball, ballcheck, or butterfly design. All high pressure
(over 125 psi) valves shall be 316 stainless steel ball, butterfly, glove or needle valves. The
system shall include a motorized inlet shut-off valve for systems isolation during shutdown.
Cleaning valves and fittings shall be provided for membrane cleaning system connection.
G. Glycerin filled pressure gauges shall be provided to measure filter pressure drops, pump
discharge, membrane feed and reject. Process control gauges shall be panel mounted.
H. Analog paddle wheel type flow meters shall be used to indicate the flow of the reject and
product water in order to monitor the unit operations. These meters shall be panel mounted.
I.
All process equipment shall be affixed to and mounted on a structural steel skid. All fasteners
are composed of stainless steel or PVC. Skids shall be painted with two zinc enriched primer
coats and two acrylic enamel finishing coats. Both membrane housings and pump shall be
mounted vertically.
J.
A centralized console shall be provided which shall control the operation of:
1. Automatic interface with level or pressure controls.
2. Pretreatment and post-treatment interlocks.
3. Reverse osmosis system controls: All motor controls, starters and disconnect switches
shall be furnished and shall be housed in a NEMA 12 steel enclosure. All local controls
shall be rated NEMA 4X.
K. All motors shall be ODP. Standard motor starters shall be high voltage across-the-line types.
L. The following process monitoring devices shall be provided:
1. A low pressure shut off switch on the suction side of the pump.
2. A total dissolved solids monitor for both product and feed water quality.
3. A high discharge pressure switch located on the discharge side of the pump.
M. The following automatic features shall be provided on this system:
1. Automatic shutdown relays, time delays and other devices necessary for automatic
operation.
2. The system shall start and stop either by manual or automatic control.
3. All auxiliary process equipment shall be automatically switched “on” with plant start-up. All
safety devices as previously described shall be operable in the manual mode.
4. All automatic shutdown shall be indicated after shutdown.
N. Acceptable manufacturer: Water Equipment Technologies or accepted substitution.
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STORAGE TANK
A. Tank shall be vertical cylindrical type, made of low density polyethylene, with a non-vented
manway located on the top. The tank shall be translucent with molded in calibrations. All tank
connections shall be fused (bulk head connections are unacceptable). Polyethylene tanks
shall be made of FDA approved resin. Provide a 10” HEPA filter made from PTFE rated at 0.2
microns, housed in a clear polycarbonate filter housing for the tank atmospheric vent. Provide
tank openings as required for inlet, outlet, vent and level indications.
2.08
REPRESSURE PUMPS
A. The pumps shall be vertical multi-staged centrifugal, with open drip-proof casing. The shaft,
impellers, diffuser chambers, outer pump sleeve and suction interconnector shall be of 316
stainless steel with 150 pound R.F. ANSI flange inlet and outlet connections. The motors shall
be 460 volts, 3 phase, 60 cycle, with NEMA frame size, 3450 RPM. Pumps shall be direct
coupled to standard NEMA C face motor with a 360 degree rabbeted fit to ensure positive
alignment.
B. Acceptable manufacturer: Grundfos or Owner approved equal.
2.09
ULTRAVIOLET STERILIZERS
A. Provide three ultraviolet sterilizers that shall be rated at a minimum of 150 GPM with 3-inch
outlet and inlet stainless steel flanged connections. Lamps shall have manual wipers and use
115 VAC, 60 Hz power. Pressure drop at maximum recommended flow must be 5 psi or less.
The bulbs shall be 254 nanometers wave length type. One UV sterilizer is to be mounted just
after the repressurization pumps and the other two are to be mounted just before the storage
tank. The treatment chamber and all wetted parts shall be of 316 stainless steel. The
sterilizers shall include elapsed running timemeter and ultraviolet dosage monitor with alarms
for low intensity light. The equipment shall meet US Department of Health regulations.
B. Acceptable manufacturer: Aquafine or Owner approved equal.
2.10
FINAL FILTER
A. Provide minimum of two round filter housings made from 316 stainless steel electropolished
with all polypropylene filter cartridges with 222/fin configuration and Viton seals rated at 0.2
microns nominal. Housing shall have a 180 grit electropolished finish and be rated at a
working pressure of 150 psi. Filters shall be provided with elbow having 150 pound RF ANSI
flange inlet and outlet connections.
B. Acceptable manufacturer: Gelman, Pall or Owner approved equal.
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INSTRUMENTATION
A. Resistivity Monitor: The conductivity analyzer shall be capable of measuring from two cells
simultaneously with the range of 0.055 us/cm to 20,000 us/cm. The analyzer shall include
three field-selectable high purity temperature compensation algorithms. All algorithms shall
converge for absolutely pure water, following the accepted values of T.S. Light published in
the Journal of Analytical Chemistry. Algorithms shall be individually selectable for each
measurement point. The analyzer display, two alarms and output signal shall each be
individually field selectable to represent either conductivity measurement. The temperature
measurement shall imply a precision thermistor, providing +/-0.15C accuracy up to 500 feet
separation of cell and analyzer. The analyzer shall be housed in a corrosion-resistant plastic
NEMA 4X (IP 65) case with an inside conductive coating to provide EMI/RFI shielding from
external electrical signals and noise. Isolated output signals of 0-1V, 0-10V and 4-20 ma dc
shall be provided for interface with grounded or ungrounded devices. Output scaling shall be
adjustable to any range within the display range by front panel keypad. Two SPDT relays,
assignable to alarms or diagnostics, shall be provided. The conductivity cell shall imply
titanium coaxial electrodes with 0.1 cm constant for all measurements below 20 U=us/cm. It
shall have the temperature sensor located in the tip of the center electrode to sense
temperature at the same location the conductivity is being measured.
1. Acceptable manufacturer: Leeds, Northrup or Owner approved equal.
B. Level Switches: Provide a liquid level system to include fiber optic level sensors mounted into
the side of the storage tank for high level, low level and low level cut off for the circulating
pump. The sensors will come with a panel mounted controller with relays for the operation of
the reverse osmosis unit and the repressure pumps. Components of the level system in
contact with the liquid are to be made from PVDF. The controller shall be capable of
producing 4-20 milliamp output.
C. Flow Monitor: Provide a panel mounted flow monitor and inline transmitter. The flow monitor
will come with a read out for flow rate and totalized flow volume. The unit will come with a 7
digit non-resettable counter for continuous totalizing. The flow transmitter will come with a
PVDF paddle wheel sensor and will be provided with a 4-20 milliamp output signal. The unit
shall measure from 0-300 GPM.
D. Back Pressure Regulator: Provide an electric actuated ball valve with controller to preset the
back pressure on the return line to the storage tank. The valve is designed to maintain a
constant back pressure in the building loop system during peak usage. The ball valve shall be
made from PVDF with Viton O rings.
E. Pressure Gauges: The pressure gauge is to come with a single scale dial of 0-200 psi. The
tube and socket material will be made from 316 SS. The gauges will be liquid filled with
glycerin and have a lower connection size of 1/4-inch NPT. The gauges are to be mounted in
an Ultrapure Gauge Guard manufactured by Plast-O-Matic or accepted substitution on the
product side of the RO unit and chemical gauge guards on the RO pretreatment to the
storage tank.
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F. Control Panel: The control panel will be NEMA 4X rated and be supplied with a
Programmable Logic Controller. The power supply to the panel will be 460V/3pH/60Hz 60
amp service and a 120V/1pH/60Hz 30 amp service. All control wiring and electrical wiring
from the equipment will terminate at the control panel and be run in rigid conduit. Disconnects
for the service shall be provided. The control panel will contain: disconnect switches and
motor starters, instrumentation for water quality, flow and pressures, run lights, on/off
switches and alarms. The panel will contain 4-20 milliamp analog outputs for low tank level,
low water quality, contacts for pump on/off status, low RO return line pressure and RO low
pressure status. Provide two sets of dry form “C” contacts for remote indication of LOW RO
RETURN LINE PRESSURE AND RO SYSTEM TROUBLE (to monitor all other indicated
alarm status).
G. Pressure Transmitter: A pressure transmitter shall be provided on the return line before the
storage tank. The transmitter shall be manufactured by Signet or Owner approved equal.
PART 3 - EXECUTION
3.01
PREPARATION
A. Important Safety Precautions: Prior to any operations, be sure that protective equipment and
safety shower and/or hose stream is available for personnel protection. Follow chemical
manufacturer’s safety instructions. Tag all distribution valves with the following information:
“DANGER-Men Working on Equipment-DO NOT TOUCH”.
3.02
CLEANING AND DISINFECTION
A. Semi-conductor grade 35 percent unstabilized hydrogen peroxide diluted to 5 percent with
deionized water shall be used as the disinfectant. Sodium hypochlorite is not acceptable.
Hydrogen peroxide disinfection solution shall be placed in storage tanks, pumped through 0.2
micron absolute membrane filters and into the PVDF piping system. All valves and sample
ports shall be opened to purge distribution lines of gases.
B. Hydrogen peroxide solution shall recirculate for 24 hours. Outlets and sample ports shall be
opened and closed each 6 hours for two minutes. At the end of the 24 hour recirculation
period, valves and sample ports shall be opened and system shall be drained. Flush system
with deionized water. At the completion of the disinfection process, the RO system and DI
water system shall be on line with equipment ready for operation and distribution piping
system in the recirculation mode.
3.03
INSTALLATION
A. Installation shall meet or exceed all applicable federal, state and local requirements,
referenced standards and conform to codes and ordinances of authorities having jurisdiction.
B. All installation shall be in accordance with manufacturer’s published recommendations.
The University of Texas
MD Anderson Cancer Center
MS072115
HIGH PURITY WATER SYSTEMS (RO)
22 67 13
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MD ANDERSON Project No. XX-XXXX
A/E Name
A/E Project No.
3.04
MD ANDERSON PROJECT NAME
Issue Description
Month, 00, 0000
START-UP AND SERVICE
A. Make available the service of qualified personnel to supervise the installation and start-up of
the entire system. Provide qualified personnel to train Owner maintenance and operations
personnel in the maintenance and operation of the entire system. When start-up is complete
and the system is operational, notify Owner that the acceptance test will be started. Provide all
chemicals, filters and expandable materials necessary to perform start-up service. Provide
necessary chemical test kits as required by maintenance manuals in corrosion-resistant metal
cabinet mounted on wall.
3.05
TESTING
A. Test the system under design operating conditions for a period of 24 hours and check for
leaks. After all leaks have been repaired, retest the system until proven airtight.
END OF SECTION 22 67 13
The University of Texas
MD Anderson Cancer Center
MS072115
HIGH PURITY WATER SYSTEMS (RO)
22 67 13
13 OF 13