The Monitor

Production Process Insights

AJ Percival

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A.J. Percival spent 12 years in the Sentry service group as a technician, training manager, and team manager before transitioning to the Regional Sales Manger role for the Western US in early 2020. He uses his field experience to guide customers to real world solutions for steam and water systems specific to their plants.

Recent Posts

The Importance of Degassed Cation Conductivity in Utility Plants

Posted by AJ Percival on 9/1/21 8:00 AM
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Topics: Power, Steam & Water

Maximize pH Measurement with Direct and Calculated pH

Posted by AJ Percival on 5/10/21 8:00 AM

Effectively monitoring cycle chemistry in a power plant relies on analyzer data's availability, accuracy, and trustworthiness. If your plant isn't utilizing smart chemistry alarms, you may be missing out on easily accessible information.

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Topics: Power, Steam & Water

How to Match Pressure and Flow Valves to Your SWAS Application

Posted by AJ Percival on 9/28/20 8:00 AM

Chemical analysis of water and steam samples in utility plants requires precise control of flow and pressure. A common element of the steam and water sampling system is a pressure reducing valve to control the pressure of the sample. However, using an incorrect valve can not only damage plant and sampling equipment, but possibly injure operatorsThat’s why it’s essential to match plant applications with the correct pressure reducing valves. 

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Topics: Power, Steam & Water

How to Maximize Your SWAS Instrumentation

Posted by AJ Percival on 8/31/20 8:00 AM

A well-planned and designed steam and water analysis system (SWAS) with the right instrumentation can help provide the critical insights you need to monitor cycle chemistry, protect equipment and ensure safe operation.

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Topics: Power, Steam & Water

Accurately Control Your SWAS Temperatures

Posted by AJ Percival on 8/10/20 8:00 AM

 

A steam and water analysis system (SWAS) conditions, analyzes and monitors the chemical properties of the steam and water used to generate electricity. One of the primary factors that affect the results from a SWAS is sample temperature. Controlling temperature in a SWAS requires the correct equipment to eliminate analysis compensation and sources of error in measurements to improve chemical feed accuracy and cost savings.

 

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Topics: Power, Steam & Water

Unreliable Chemical Feed? The Solution Might be Easier than You Think

Posted by AJ Percival on 6/14/19 8:36 AM

Temperature is one of the most critical parameters to control when sampling in a power plant, and accurate and reliable measurements are essential for operational excellence. Incorrect measurements can result in unreliable data that can lead to safety issues and costly equipment damage.

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Topics: Power, Steam & Water

Do You Trust Your Process Analytics?

Posted by AJ Percival on 4/26/17 3:40 PM

Since a steam and water analysis system (SWAS) is critical to any power plant, any variation from optimal operation and consistent steam and water sampling can lead to problems that cause added time and expense.

The burning question is: Do you trust your process analytics?

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Topics: Power, Steam & Water

How to Accurately Measure pH in High Purity Water

Posted by AJ Percival on 9/21/16 10:27 AM

Maintaining proper, slightly alkaline pH levels in boilers and Heat Recovery Steam Generators (HRSGs) is critical in preventing boiler tube corrosion that can be costly to an operation and potentially harmful to employees.

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Topics: Power, Steam & Water