Borescope inspections.

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What are borescope investigations?

Borescope investigations provide a safe, non-invasive method to visually inspect the internal condition of plant and water systems. Using high-resolution camera equipment, engineers can assess inaccessible areas such as calorifiers, heat exchangers, and pipework without the need for full system dismantling.

At Complii, we use specialist borescopes to identify issues such as scale formation, corrosion, or biological fouling, giving you a clear view of your system’s internal condition. This process supports compliance with HSG274 Part 2 and is an essential element of effective water hygiene and Legionella control programmes.

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Why choose Complii?

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Protect your people, property, and business. Here’s why we’re the right choice for a borescope inspections.

Non-invasive inspection

Borescope surveys provide a clear view inside vessels and pipework without the need for draining or dismantling, reducing disruption and downtime.

Early fault detection

Visual inspections can identify corrosion, scale, or biofilm development before these issues escalate, helping prevent system damage or inefficiency.

Supports compliance with HSG274

Regular internal inspections of calorifiers and hot water systems are a requirement under HSG274 Part 2. Borescope investigations help meet these obligations efficiently and safely.

Validates water treatment performance

Our inspections verify whether your existing water treatment programme is effectively preventing scaling, corrosion, and fouling.

Targeted maintenance planning

By identifying specific areas of concern, borescope investigations enable targeted remedial work, reducing unnecessary maintenance and associated costs.

Detailed visual reporting

You’ll receive a comprehensive report complete with images and analysis, providing clear evidence of system condition and recommendations for next steps.

Your questions answered.

Borescope investigations are commonly used for calorifiers, heat exchangers, storage tanks, and closed water systems. They can also be applied to pipework and other enclosed plant where internal access is limited.
Not always. In many cases, borescope inspections can be performed through existing inspection ports or hatches while the system remains operational.
Under HSG274 Part 2, calorifiers should be inspected annually. However, frequency can be adjusted based on system performance, risk assessment findings, and previous inspection results.
Typical findings include scale build-up, corrosion, pitting, debris accumulation, and signs of biofilm growth. These conditions can affect system efficiency and increase Legionella risk.
Yes. Each investigation includes high-quality images and a detailed written report summarising the findings and recommended actions.
By identifying areas of scale and biofilm that promote bacterial growth, borescope inspections form a crucial part of proactive Legionella prevention and compliance monitoring.

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Compliance with confidence.

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