A useful leak survey is not a walk-through with a detector. It is a controlled field process that protects people and operations, records enough evidence for maintenance to act, and states the assumptions behind every estimated loss.

01 | Purpose

Where LeakShooter fits into the Fisher CASO Framework

The Fisher Compressed Air System Optimisation (CASO) Framework is our branded service approach for connecting field evidence to the wider compressed-air system and a verified improvement plan. A Synergys LeakShooter provides visual ultrasonic targeting, dB RMS readings and timestamped images. Fisher CASO adds the approved work scope, site context, a physical reference, repair priority, engineering interpretation and clear reporting.

Synergys rates the LeakShooter range to detect a 0.1 mm leak at 3 bar from 20 m under the manufacturer's test conditions. Real survey distance and sensitivity depend on pressure, background ultrasound, geometry, access and the operating environment.

Safety boundary: detection does not authorise physical intervention. We do not reach through guarding, interfere with live pressurised pipework or tag an unsafe-to-reach point. Access limits are recorded and handed back to the client.

02 | Field workflow

The seven controlled stages of a Fisher leak survey

1. Confirm scope and access

Confirm the client site, approved work area, access route, induction, permit requirements, emergency arrangements and site restrictions.

2. Brief the task and risks

Complete the DSTI and risk briefing. Review traffic, noise, moving machinery, PPE, photography, tagging and stop-work controls.

3. Inspect equipment

Complete a pre-use check of the LeakShooter, headphones, camera function, probes, tags, cable ties and supporting tools.

4. Scan systematically

Move through the approved route in an orderly pattern. Remain outside guarding, clear of traffic and moving plant, and stop walking before recording.

5. Tag and photograph safely

Tag only safe, reachable points and photograph only where authorised. Preserve the client operation and confidentiality rules.

6. Record and prioritise

Capture location, tag number, dB reading, photograph reference and observations, then assess likely impact and practical repair priority.

7. Close out and hand over

Remove loose materials, report hazards and access limitations, leave the area safe and issue the agreed survey findings.

03 | Safety controls

What governs work on the day

The method is read with the site-specific risk assessment, client permit rules and daily safe task instruction. If conditions differ from the assessment, equipment is damaged, a hazard is uncontrolled or the client changes the work instruction, the team stops and escalates before continuing.

  • Designated walkways, site traffic rules and restricted-area controls are observed.
  • Hearing protection and other site or task-specific PPE are confirmed before scanning.
  • Photographs are taken only where authorised and while stationary.
  • Elevated access uses an inspected ladder or approved platform with required controls.
  • Work does not start or continue with a high or extreme residual risk.

04 | Evidence and estimation

From a detected sound to a repair-ready record

For each accepted finding, the survey record links the physical location and tag to the LeakShooter image and reading. The report can then group leaks by area, severity and repair priority so maintenance teams can plan work without repeating the initial search.

Instrument severity or K-function output is indicative. Where financial impact is reported, Fisher states the basis used - such as pressure, operating hours, air or energy cost and the agreed conversion method. A modelled saving is not presented as a verified saving. Verification requires repair close-out and, where included in scope, a re-survey or supporting system measurement.

The value of the survey is not the number of tags. It is the quality of the evidence and the clarity of the next action.

Fisher CASO Framework principle

05 | Equipment selection

Choose the LeakShooter for the inspection question

LeakShooter V2+

Visual ultrasonic leak location, severity indication and photographic evidence for compressed air, gas and vacuum work.

View V2+

LeakShooter V2+IR

Adds a 160 x 120 thermal imager, temperature cursors and CSV export for combined leak and thermal inspection needs.

View V2+IR

LeakShooter V3+PRO

Adds touchscreen operation, thermal imaging and the STRAPSHOOTER contact-ultrasound workflow for steam-trap assessment.

View V3+PRO

Inspection accessories

Flexible probes support restricted access; the dome emitter supports tightness testing; the contact probe supports mechanical listening.

Browse accessories

06 | Typical deliverable

What the client receives

The exact report is agreed in the survey scope. A typical Fisher deliverable includes the surveyed areas and limitations, a tagged leak register, photographic evidence, readings and observations, repair guidance, priority, estimating assumptions and a management summary of the opportunity.

Optional follow-up can include repair tracking, closure evidence, re-survey and integration with broader flow, pressure, power or compressor-performance measurements.