The Importance of Water Chemistry

Some of the most expensive threats to industrial equipment can start with something you can't see: a small change in water chemistry.

In power generation and other high-purity water applications, water isn't simply a utility. It is an integral part of the process.

Changes in dissolved oxygen, conductivity, sodium, silica, pH, phosphate, and other chemistry parameters can provide an early indication that conditions inside the water and steam cycle are changing. Left unchecked, those changes can contribute to corrosion, deposits, scaling, reduced heat-transfer efficiency, and damage to critical equipment.

That's why understanding water chemistry is an important part of protecting the entire process.

Small Changes Can Have a Big Impact

Industrial water and steam systems operate under demanding conditions.

When water chemistry moves outside of its desired range, the effects may develop gradually inside piping, boilers, turbines, heat exchangers, and other equipment long before an obvious operational problem appears.

Two of the biggest concerns are corrosion and deposition.

Corrosive conditions can attack metal surfaces and compromise critical components over time. Deposits and scale can interfere with heat transfer, restrict flow, reduce efficiency, and create conditions that further accelerate equipment degradation.

Maintaining the right chemistry helps protect the surfaces the process depends on.

Water Chemistry Is an Early Warning System

The value of water chemistry monitoring isn't simply knowing what's in the water.

It's understanding what those measurements are telling you about the health of the system.

Changes in individual parameters can point toward contamination, corrosion, treatment problems, condenser leakage, oxygen ingress, or other developing conditions.

For example:

Dissolved Oxygen

Monitoring oxygen can help identify conditions that contribute to corrosion within water and steam systems.

Conductivity

Conductivity measurements provide important information about water purity and the presence of ionic contamination.

Sodium

Even very low concentrations of sodium can provide an indication of contamination in high-purity water systems.

Silica

Silica monitoring is particularly important throughout boiler and steam cycles because unwanted silica can carry into steam and contribute to deposits.

Phosphate

Monitoring phosphate helps operators maintain proper treatment chemistry in boiler water applications.

Rather than waiting for equipment performance to tell you something has gone wrong, chemistry gives operators another way to identify changing conditions earlier.

Why Continuous Measurement Matters

A grab sample provides a picture of water chemistry at one moment in time.

The process doesn't stop between samples.

Online analytical instrumentation provides continuous visibility into critical chemistry parameters, allowing operators to see changes as they occur and respond based on what's actually happening inside the system.

That can help teams:

• Detect contamination earlier
• Identify changing chemistry conditions
• Optimize chemical treatment
• Reduce corrosion and deposition
• Protect boilers, turbines, and other critical assets
• Improve process efficiency
• Support more informed operating decisions

Continuous measurement turns water chemistry from periodic laboratory information into actionable process data.

Protecting Against Flow-Accelerated Corrosion

Water chemistry also plays an important role in controlling Flow-Accelerated Corrosion (FAC).

FAC occurs when flowing water or wet steam removes the protective oxide layer on carbon-steel components. Once that protective layer begins to dissolve, material loss can accelerate.

Because many affected surfaces are located inside complex piping systems, direct inspection alone can be difficult.

Maintaining and continuously monitoring the appropriate chemistry conditions provides an important tool for managing that risk and protecting critical plant infrastructure.

Better Chemistry. Better Reliability.

Proper water chemistry doesn't just protect equipment from damage.

It can contribute to better overall plant performance.

Cleaner heat-transfer surfaces help equipment operate closer to its intended efficiency. Better control of treatment chemicals can reduce unnecessary chemical use. Earlier detection of contamination can provide more time to intervene before a chemistry excursion becomes an equipment problem.

The result is a direct connection between water chemistry, equipment reliability, efficiency, and plant performance.

The Waltron Approach

Through Waltron, TechStar provides online water and steam quality monitoring technologies designed for demanding industrial applications.

Waltron's analytical portfolio includes measurement solutions for:

• Conductivity and pH
• Dissolved oxygen
• Sodium
• Silica
• Phosphate
• Ammonia
• Hydrazine
• Dissolved hydrogen
• Iron
• Hardness
• Chlorine and disinfectants
• Oil in water
• Additional water chemistry parameters

These technologies provide operators with continuous insight into chemistry throughout critical points in the water and steam cycle.

From Measurement to Understanding

Having an analyzer installed is only part of the solution.

The right measurement needs to be made at the right location, with the right technology, and operators need to understand what the resulting data means for their process.

That's where TechStar's Process Analytics approach comes in.

By combining Waltron's water chemistry technologies with TechStar's application expertise, training, and field support, we can help facilities develop a more complete picture of their water and steam chemistry.

Because when it comes to critical equipment, what's happening inside the water can ultimately determine what's happening throughout the plant.

Measure the chemistry. Understand the process. Protect the equipment.