Water Treatment Training Seminar

School District of Philadelphia November 6, 2007

Williard Limbach offers a complete range of comprehensive facility services including:

Mechanical ConstructionPlumbing

HVAC Maintenance & 24-Hour ServiceWater Treatment

Williard Limbach Services

Maintenance & Service

• Custom-tailored HVAC maintenance agreements• Water Treatment chemicals & service• HVAC & Plumbing system modernization

Maintenance & Service Customers

Abington Hospital AIG Hopkinson HouseAbington Hospital AIG Hopkinson HousePhiladelphia Museum of Art Philadelphia School District Philadelphia Museum of Art Philadelphia School District

Philadelphia Stock Exchange Science CenterPhiladelphia Stock Exchange Science CenterUniversity of Pennsylvania Winterthur MuseumUniversity of Pennsylvania Winterthur Museum

700 formal agreements in place500 HVAC contracts

200 Water Treatment contracts

Over 1,500 buildings are served by our fleet of service vehicles

Liacouras Center

• This 11,000 seat multi-purpose convocation center is home to the Temple Owls

• Plumbing systems installed by Williard Limbach

Temple/Shriners Hospital

• A 10-story, 400,000 square foot dual-owned children’s hospital

• Williard Limbach installed all HVAC & plumbing systems

Abington Hospital – Toll Pavilion

• This 6-story, 325,000 square foot facility provides critical care for the Abington community

• Williard Limbach installed all HVAC, plumbing & electrical systems

• Williard Limbach maintains the HVAC systems for Abington Memorial Hospital & Medical Offices

Mercy Suburban Hospital

• 65,000 sq ft Emergency / Operating room addition

• Williard Limbach installed all HVAC systems

• New installation has improved overall efficiency of the HVAC systems by 30%

• Hospital is applying for Gold LEED certification

             

     

Wachovia Center

• This 21,000 seat arena is home to the Flyers & 76ers

• Williard Limbach installed all electrical systems

CitiBank

Chestnut Hill Doylestown Norristown Plymouth Meeting

Warrington

• Five LEED designed branches that will be submitted to the United State Green Building Council (USGBC)

• Recently awarded these projects, Williard Limbach is responsible for the HVAC & Plumbing

Water Treatment Service

Providing quality water management for

heating & air conditioning systems,

by safely maintaining the chemical balance

necessary for efficient HVAC equipment operation.

Applications• Condenser water • Closed loop

Chilled Hot Dual Temp Reheat

• Steam boilers Make-up Feedwater Boiler water Condensate

• Process cooling water

Water Treatment Equipment

• Micro-processor controllers• Automatic chemical feed• Blow-down control• Corrosion monitoring• Brominators• Metering pumps• Remote monitoring & control• Computer interface with

building operations systems

• Neutralizers• Softeners• Dealkalizers• Reverse osmosis• Filters• Containment systems• Mixers• Feeders• Deionizers

Water Treatment Products

• Corrosion Inhibitors• Anti-foulants dispersants• Scale retardants• pH control• White rust inhibitors• EPA registered products

Fungicides Algaecides Bactericides Oxidizing biocides

• USDA & FDA registered products

• Boiler dispersants• Scale sequestrants• Oxygen scavengers• Alkalinity builders• Anti-foams• Chelating agents• Filming Amines• Neutralizing amines• Alkaline boilouts• Iron dispersants

• Full service agreements

• Surveillance agreements

• Chemical & equipment sales

• Turnkey installations

Water Treatment

Full Service Program

• Scheduled service inspections• On-site water analysis• Equipment calibration & maintenance• Inventory control & drum maintenance• Cooling tower inspection• Visual inspection of open boilers & chillers• Review results & logs with operating staff• Issue written report on service inspection• Guarantee scale free operation• 24 hour emergency service

Surveillance

• Scheduled service by technical sales staff• Instruct customer personnel on chemical addition• On-site water analysis• Equipment calibration• Inventory control• Review test results & daily test logs with operating staff• Prepare service reports with test results & recommendation• Discuss findings & report with facility manager• Train operating personnel• 24 hour emergency service

Turnkey Installations

• Engineering & design

• Installation by qualified in-house technicians

• Equipment commissioning

• Training of on-site operating personnel

Technical Sevices

• Complete laboratory water/deposit analysis• Computerized monitoring• Corrosion coupons• Microbiolgical studies• Legionella analysis• Water re-use studies• Video inspection• Statistical process control• Regulatory compliance assistance• Leak testing & analysis• On-site training of customer’s personnel

Pre-Treatment Services

• Pre-treatment systems in use are Ion Exchange Water Softeners

• Softeners remove the calcium & magnesium hardness from the raw make-up water prior to it entering the boiler feed water system

• Important part of reducing the scaling tendencies in industrial steam boiler system

Steam Boilers

• Objective of water treatment is to control corrosion & deposition

• Efficient operation requires control over deposits, which will interfere with proper heat transfer

• Water treatment plays an important role in reducing energy costs & keeping boiler fuel lines clear, running at maximum efficiency

Chemical Oxygen Scavenging

Chemical treatment for the control of low pressure

boiler & boiler feed-water line corrosion is generally

thought of as the application of chemical

oxygen scavengers such as sulfite for the purpose

of removing residual feed-water oxygen

Testing ProceduresConductivity (Blowdown)

Conductivity / TDS– Rinse & fill sample cup of tester– Let stand for 15 – 30 seconds– Turn power on to tester– Once reading stabilizes, record on Boiler Log under “Conductivity”– The control limits for on line boilers are 2500 – 3500 micromohs– If reading is above 3500 increase blowdown rate– If reading is below 2500 decrease blowdown rate

Testing ProceduresSulfite (Oxygen Scavenger)

Boiler TestsSulfite Test– Rinse & fill test vial to 25-ml line with boiler water– Add 1 drop Taylor R-0638 (phenolthalein) (sample turns pink)

– Add 2 dippers of Taylor R-0725 (acid starch) (pink color disappears)

– Swirl & add another dipper of Taylor R-0725 (acid starch)

– Add Taylor R-0699 (potassium iodide iodate) one drop at a time until sample turns a permanent blue

– Multiply number of drops by 10– Record on log sheet under “Sulfite”– Control range is 30-60 ppm for on line boilers

Treatment Logs

• Treatment logs are critical to any treatment program• Logs are an excellent tool used to help maintain systems &

identify potential problems in a system before damage can occur

• On-Site Field Training – Water Samples

• Proper location point for each system sample• Sampling techniques

– Test Procedures• Review test procedures• Perform each test• Record results• Adjust chemical feed & blowdown to control

– Efficiency Readings• Locate each parameter to read• Ensure proper operation of testing probes• Record results• Determine if system is operating efficiently

Training Program

Chemical Handling• Material safety data sheets• Safety equipment• Proper chemical handling• Chemical spills

Our Safety Commitment• All Williard Limbach employees (office & technical staff) have been trained in

the Incident & Injury Free (IIF) Safety Program

• Williard Limbach’s goal is to send our employees & our customer’s employees home to their families incident and injury free everyday.

Safety