Water is used in many ways in process industry systems and buildings of all kinds for heating and cooling. Water using systems are prone to corrosion, scale formation and fouling due to a variety of impurities normally found in water.
Boilers are used for producing steam or hot water for a variety of heating processes. Water is also commonly used in cooling, most often in open recirculating cooling systems.
Boiler and cooling system equipment should be inspected at least annually to detect scale, corrosion or fouling problems which would impact the efficiency of operation and even the integrity of the piece of equipment under examination.
BAIN & ASSOCIATES CONSULTING LTD WILL INSPECT HEAT TRANSFER RELATED EQUIPMENT AND PROVIDE A FULL REPORT DOCUMENTING EQUIPMENT CONDITION AND NECESSARY REPAIRS TOGETHER WITH OPERATION OR TREATMENT CHANGES REQUIRED.
To obtain a detailed step by step procedure for conducting a boiler system or cooling system inspection please e-mail Bain & Associates Consulting, Ltd.
BOILER INSPECTION
- Pretreatment Systems
- Boiler Feedwater Systems
- Boilers
- Steam Condensate Systems
COOLING SYSTEM INSPECTION
- Cooling Towers and Ancillary Equipment
- Heat Exchanger Units
COOLING TOWER INSPECTION
Cooling Towers are used in an industrial process to remove heat energy from the recirculating cooling water primarily by evaporation. The hot water returning from heat exchangers in the plant is pumped up to the distribution deck at the top of the cooling tower. The water falls through holes or nozzles in the deck into the fill. The cooling tower fill is designed to break up the water into small droplets with as much surface area as possible to maximize evaporation of the water. The cooling tower fan (generally an induced draft fan at the top of the tower structure) pulls air through the fill counter current to the falling water droplets maximizing evaporation of the water. For each pound of water evaporated the residual water loses approximately 1000 BTU, enough heat energy to cool 100 lbs of water by 10F. So if 1% of the recirculating water is evaporated, the remaining water is cooled by 10F. The cooled water droplets fall down from the bottom of the fill into the cooling tower basin. The basin serves as a catchment area for the water falling through the tower and also being an area of low flow it allows for sedimentation of suspended solids scrubbed out of the air by the water as it passes over the tower.
The areas inspected in a cooling tower are as follows:
- The Cooling Tower Basin
- The Cooling Tower Structural Lumber and Fill
- The Drift Eliminator
- The Cooling Tower Deck
- The Induced Draft Fan Cells
- The Louvers on the Sides of the Cooling Tower
- The Structural Cladding on the Ends of the Cooling Tower
- The Recirculating Pumps and Associated Valves
- The Return Water Risers and the Valves on the Distribution System
REQUIRED EQUIPMENT
The following equipment will be needed to conduct the inspection of a cooling tower:
- Coveralls
- Gloves
- Hardhat
- Safety Glasses or Goggles
- Safety Shoes
- Scraping Device (Knife, Screwdriver, etc.)
- Screwdriver or Ice Pick for Checking the Integrity of the Structural Lumber
- Sample Bags for Deposits
- Camera
- Tablet to Record Observations and Cooling Tower Data
- Flashlight
- Microbiological Sample Vials
To obtain a detailed step by step procedure for conducting a cooling tower inspection please e-mail Bain & Associates Consulting, Ltd.
HEAT EXCHANGER INSPECTION
Heat exchangers are used in an industrial process to exchange heat from a process or product stream to water as a coolant, often in an open recirculating cooling water system. The cooling process is critical if the industrial process is to operate properly. If the heat exchange metal surfaces become fouled due to scale, corrosion, biological material or process contaminants the exchanger will not properly cool the process.
This results in loss of cooling capability, which can limit or stop production.
During operation various monitoring tools are used to determine if the heat exchanger metal surfaces are clean. The monitoring methods currently available only provide indications relative to conditions in the system. During plant turnarounds or shutdowns, heat exchangers are opened for inspection, cleaning and repair. It is only at these times where the actual condition of the heat exchanger can be determined. During inspections the effectiveness of a cooling water program is directly observed and determined.
REQUIRED EQUIPMENT
The following equipment will be needed to conduct the inspection of a heat exchanger:
- Coveralls
- Gloves
- Hardhat
- Safety Glasses or Goggles
- Safety Shoes
- Scraping Device (Knife, Screwdriver, etc.)
- Sample Bags for Deposits
- Camera or Video Camera
- Tablet to Record Observations and Heat Exchanger Data
- Flashlight
- Microbiological Sample Vials
To obtain a detailed step by step procedure for conducting a heat exchanger inspection please e-mail Bain & Associates Consulting, Ltd.