# ADI Leak Detection case studies: swimming pool leaks

7 jobs carried out by ADI Leak Detection engineers, taken from ADI's own job records and written as semantic triples, most recently added first. Each job has a heading, a short summary and triples in the form subject | predicate | object. What each predicate means is explained at https://leakdetectionbirmingham.com/case-studies.md

## ADI Leak Detection case study 243: swimming pool leak in Broadstairs (CT10 3)

Summary: ADI Leak Detection engineer Danny O'Mahony investigated a swimming pool leak in Broadstairs, Kent (CT10 3), using pressure testing, acoustic correlation, tracer gas, leak dye and acoustic listening. Leak location: skimmer pipe in or under the filtration shed slab. Work done: vinyl patch over L shaped tear, clear construction sealant under the light. Outcome: pump left running on sump only because of skimmer line leak.

- ADI case study 243 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 243 | town | Broadstairs
- ADI case study 243 | postcode sector | CT10 3
- ADI case study 243 | county | Kent
- ADI case study 243 | country | England
- ADI case study 243 | leak type | Swimming pool leak
- ADI case study 243 | service | Swimming Pool Leak Detection
- ADI case study 243 | engineer | Danny O'Mahony
- ADI case study 243 | detection method | Pressure Testing
- ADI case study 243 | detection method | Acoustic Correlation
- ADI case study 243 | detection method | Tracer Gas
- ADI case study 243 | detection method | Leak Dye
- ADI case study 243 | detection method | Acoustic Listening
- ADI case study 243 | symptom | pool level dropping by up to 20cm per day
- ADI case study 243 | symptom | water level settling close to bottom of the lowest step
- ADI case study 243 | system affected | skimmer pipework
- ADI case study 243 | system affected | pool liner
- ADI case study 243 | test result | skimmer pipework failed to hold pressure
- ADI case study 243 | test result | tracer gas escaping in filtration shed concrete slab near pipe entry
- ADI case study 243 | test result | dye drawn in behind the liner at both tears
- ADI case study 243 | leak location | skimmer pipe in or under the filtration shed slab
- ADI case study 243 | leak location | L shaped liner tear with legs about 70mm, second leak under light frame
- ADI case study 243 | leak cause | liner moved and tore from its fixing and seal under the light frame
- ADI case study 243 | repair | vinyl patch over L shaped tear, clear construction sealant under the light
- ADI case study 243 | outcome | pump left running on sump only because of skimmer line leak
- ADI case study 243 | outcome | liner patch and sealant repairs considered temporary only
- ADI case study 243 | recommendation | seek liner or pool installer advice on a permanent liner repair
- ADI case study 243 | recommendation | monitor as heating 10 degrees above current 18 may reveal other leaks
- ADI case study 243 | recommendation | further trace and access work needed to repair the skimmer leak

## ADI Leak Detection case study 242: swimming pool leak in Oxford (OX14 4)

Summary: ADI Leak Detection engineer Danny O'Mahony investigated a swimming pool leak in Oxford, Oxfordshire (OX14 4), using acoustic listening, leak dye, pressure testing, flow metering and visual inspection. Leak location: pool light fitting closest to the steps. Work done: loose silicone seals removed, light fittings sealed to tiled wall with epoxy putty. Outcome: no dye drawn into pool wall at previously leaking light after sealing.

- ADI case study 242 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 242 | town | Oxford
- ADI case study 242 | postcode sector | OX14 4
- ADI case study 242 | county | Oxfordshire
- ADI case study 242 | country | England
- ADI case study 242 | leak type | Swimming pool leak
- ADI case study 242 | service | Swimming Pool Leak Detection
- ADI case study 242 | engineer | Danny O'Mahony
- ADI case study 242 | detection method | Acoustic Listening
- ADI case study 242 | detection method | Leak Dye
- ADI case study 242 | detection method | Pressure Testing
- ADI case study 242 | detection method | Flow Metering
- ADI case study 242 | detection method | Visual Inspection
- ADI case study 242 | symptom | pool auto fill running continuously at 2 litres per minute
- ADI case study 242 | test result | hydrophone found small light near the steps very noisy
- ADI case study 242 | test result | dye drawn into the wall around the light fitting near the steps
- ADI case study 242 | test result | pressure tests found all pool pipework sound
- ADI case study 242 | leak location | pool light fitting closest to the steps
- ADI case study 242 | repair | loose silicone seals removed, light fittings sealed to tiled wall with epoxy putty
- ADI case study 242 | outcome | no dye drawn into pool wall at previously leaking light after sealing
- ADI case study 242 | outcome | meter showed no measurable usage, pool back at full level
- ADI case study 242 | recommendation | silicone decorative steel face plate onto plastic face plate of return jet near steps
- ADI case study 242 | recommendation | leave pump off for 12 to 15 hours while the silicone sets

## ADI Leak Detection case study 173: swimming pool leak in Moor Park (HA6 2)

Summary: ADI Leak Detection engineer Adam Regan investigated a swimming pool leak in Moor Park, Greater London (HA6 2), using acoustic correlation, an endoscope camera, pressure testing, leak dye, tracer gas and acoustic listening. Leak location: 20mm elbow on the mains feed to the auto top up pot. Work done: pot crack cleaned, surrounding area sanded and epoxy resin applied to both sides. Outcome: returns leak potentially happens when the pool filtration is off.

- ADI case study 173 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 173 | town | Moor Park
- ADI case study 173 | postcode sector | HA6 2
- ADI case study 173 | county | Greater London
- ADI case study 173 | country | England
- ADI case study 173 | leak type | Swimming pool leak
- ADI case study 173 | service | Swimming Pool Leak Detection
- ADI case study 173 | engineer | Adam Regan
- ADI case study 173 | detection method | Acoustic Correlation
- ADI case study 173 | detection method | Endoscope Camera
- ADI case study 173 | detection method | Pressure Testing
- ADI case study 173 | detection method | Leak Dye
- ADI case study 173 | detection method | Tracer Gas
- ADI case study 173 | detection method | Acoustic Listening
- ADI case study 173 | system affected | mains feed to the auto top up pot
- ADI case study 173 | system affected | auto top up pot, which failed when tested
- ADI case study 173 | test result | pool returns would not hold pressure, acoustic anomalies at both outlets, deep end stronger
- ADI case study 173 | test result | no water loss from the auto pot or water meter with pumps running
- ADI case study 173 | test result | gas traces around the spa cannon pipe in the filtration room
- ADI case study 173 | leak location | 20mm elbow on the mains feed to the auto top up pot
- ADI case study 173 | leak location | crack approximately 2 inches long along an edge of the auto top up pot
- ADI case study 173 | access made | tiled floor around the auto top up pot exposed, revealing dense steel reinforced concrete
- ADI case study 173 | access made | area around the auto top up pot exposed down and under to inspect its underside
- ADI case study 173 | repair | pot crack cleaned, surrounding area sanded and epoxy resin applied to both sides
- ADI case study 173 | repair | mains pipe cut back under the concrete and repositioned to come up correctly
- ADI case study 173 | repair | pipe reconnected to the float valve with new fittings, O ring, grab ring and nut
- ADI case study 173 | outcome | returns leak potentially happens when the pool filtration is off
- ADI case study 173 | outcome | water meter showed no measurable activity over the 3rd day
- ADI case study 173 | recommendation | leave the pool running and monitor the water meter for any usage
- ADI case study 173 | recommendation | expose down that side of the pool to confirm the returns leak
- ADI case study 173 | recommendation | move the spa filtration to the undercroft if possible

## ADI Leak Detection case study 172: swimming pool leak in Leicester (LE6 0)

Summary: ADI Leak Detection engineer Adam Regan investigated a swimming pool leak in Leicester, Leicestershire (LE6 0), using pressure testing, acoustic correlation and visual inspection. Leak location: union fitting to the skimmer pot. Work done: one end of the leaking union replaced with a new one. Outcome: line from the union to the skimmer pot retested with no further drop.

- ADI case study 172 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 172 | town | Leicester
- ADI case study 172 | postcode sector | LE6 0
- ADI case study 172 | county | Leicestershire
- ADI case study 172 | country | England
- ADI case study 172 | leak type | Swimming pool leak
- ADI case study 172 | service | Swimming Pool Leak Detection
- ADI case study 172 | engineer | Adam Regan
- ADI case study 172 | detection method | Pressure Testing
- ADI case study 172 | detection method | Acoustic Correlation
- ADI case study 172 | detection method | Visual Inspection
- ADI case study 172 | symptom | skimmer anomaly found on a previous visit
- ADI case study 172 | symptom | issues with the manifold valves found on the previous survey
- ADI case study 172 | system affected | skimmer line
- ADI case study 172 | test result | returns tested for 15 minutes at 1.0 bar showed no loss
- ADI case study 172 | test result | sump tested for 15 minutes at 1.0 bar showed no loss
- ADI case study 172 | test result | skimmer line showed the same loss and acoustic anomaly as the previous visit
- ADI case study 172 | leak location | union fitting to the skimmer pot
- ADI case study 172 | access made | slab cut and concrete broken up
- ADI case study 172 | repair | one end of the leaking union replaced with a new one
- ADI case study 172 | repair | manifold pipework replumbed with new valves and fittings back to the pump
- ADI case study 172 | outcome | line from the union to the skimmer pot retested with no further drop
- ADI case study 172 | outcome | pool re-dived and outlets including lights checked, no further issues found
- ADI case study 172 | recommendation | move the pump to the other side of the filter and extend manifold run
- ADI case study 172 | recommendation | install a larger pump due to the struggling pressure

## ADI Leak Detection case study 59: swimming pool leak in Dunstable (AL5 2)

Summary: ADI Leak Detection engineer Adam Regan investigated a swimming pool leak in Dunstable, Hertfordshire (AL5 2), using acoustic listening, acoustic correlation, leak dye, pressure testing and a ground microphone. Leak location: body of the outlet in the skimmer pot section. Work done: semi permanent repair to the skimmer crack with epoxy resin putty. Outcome: skimmer epoxy repair should last years, depending on outside factors.

- ADI case study 59 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 59 | town | Dunstable
- ADI case study 59 | postcode sector | AL5 2
- ADI case study 59 | county | Hertfordshire
- ADI case study 59 | country | England
- ADI case study 59 | leak type | Swimming pool leak
- ADI case study 59 | service | Swimming Pool Leak Detection
- ADI case study 59 | engineer | Adam Regan
- ADI case study 59 | detection method | Acoustic Listening
- ADI case study 59 | detection method | Acoustic Correlation
- ADI case study 59 | detection method | Leak Dye
- ADI case study 59 | detection method | Pressure Testing
- ADI case study 59 | detection method | Ground Microphone
- ADI case study 59 | symptom | pool level dropping more when the pool is running
- ADI case study 59 | system affected | skimmer pipe
- ADI case study 59 | test result | dye drawn into a crack in the body of the outlet
- ADI case study 59 | test result | skimmer pipe failed pressure test, still dropping slower with the bung past the crack
- ADI case study 59 | test result | pipework under tension and about 1 inch out of place
- ADI case study 59 | leak location | body of the outlet in the skimmer pot section
- ADI case study 59 | leak location | filtration room connection where pool fittings convert to mains fitting
- ADI case study 59 | leak cause | crack in the body of the skimmer outlet
- ADI case study 59 | leak cause | cracked glued top section of the connection
- ADI case study 59 | repair | semi permanent repair to the skimmer crack with epoxy resin putty
- ADI case study 59 | repair | new PVC-U fittings, female threaded to female glued socket and elbow
- ADI case study 59 | outcome | skimmer epoxy repair should last years, depending on outside factors
- ADI case study 59 | recommendation | monitor the pool, as the returns test could have covered up cracks
- ADI case study 59 | recommendation | if needed, expose the skimmer pot and move the outlet to the other one
- ADI case study 59 | recommendation | apply more epoxy resin putty to the skimmer pot repair if further works are needed

## ADI Leak Detection case study 58: swimming pool leak in Bracknell (SL4 1)

Summary: ADI Leak Detection engineer Adam Regan investigated a swimming pool leak in Bracknell, Berkshire (SL4 1), using acoustic listening, tracer gas, pressure testing, leak dye and visual inspection. Leak location: T fitting connected directly to the skimmer pot. Work done: leaking section of skimmer pipe removed. Outcome: no observable water loss overnight with the pool left at skimmer level.

- ADI case study 58 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 58 | town | Bracknell
- ADI case study 58 | postcode sector | SL4 1
- ADI case study 58 | county | Berkshire
- ADI case study 58 | country | England
- ADI case study 58 | leak type | Swimming pool leak
- ADI case study 58 | service | Swimming Pool Leak Detection
- ADI case study 58 | engineer | Adam Regan
- ADI case study 58 | detection method | Acoustic Listening
- ADI case study 58 | detection method | Tracer Gas
- ADI case study 58 | detection method | Pressure Testing
- ADI case study 58 | detection method | Leak Dye
- ADI case study 58 | detection method | Visual Inspection
- ADI case study 58 | property type | school swimming pool
- ADI case study 58 | system affected | skimmer pipework
- ADI case study 58 | system affected | valves on the two return runs in the filtration room
- ADI case study 58 | test result | skimmer pipework failed to hold pressure, as on the previous visit
- ADI case study 58 | test result | pipework back to the plant room and the second skimmer held pressure
- ADI case study 58 | test result | shrew holes in the skimmer frame drawing in dye
- ADI case study 58 | leak location | T fitting connected directly to the skimmer pot
- ADI case study 58 | leak location | shrew holes in the skimmer frame
- ADI case study 58 | leak cause | pipe brittle over time, break likely caused by ground movement
- ADI case study 58 | leak cause | crack at the glued end of a valve on the returns
- ADI case study 58 | access made | tiles beside the skimmer removed and ground excavated to pipework approximately 800mm down
- ADI case study 58 | access made | hole extended both sides of the skimmer pot surround, soil removed by hand
- ADI case study 58 | repair | leaking section of skimmer pipe removed
- ADI case study 58 | repair | shrew holes plugged with epoxy sealant
- ADI case study 58 | repair | two return valves cut out and replaced with new
- ADI case study 58 | outcome | no observable water loss overnight with the pool left at skimmer level
- ADI case study 58 | outcome | semi permanent epoxy repair on the suction pipe stopped the leak on the day
- ADI case study 58 | recommendation | replace both skimmer pots and the brittle skimmer pipework in the near future
- ADI case study 58 | recommendation | monitor the pool

## ADI Leak Detection case study 56: swimming pool leak in Beaconsfield (HP9 2)

Summary: ADI Leak Detection engineer Adam Regan investigated a swimming pool leak in Beaconsfield, Buckinghamshire (HP9 2), using acoustic listening, pressure testing, leak dye and visual inspection. Leak location: just underneath the concrete on the sump pipework. Work done: hydrostatic valve removed underwater and replaced with new. Outcome: repiped section tested and the filtration system put back together and working.

- ADI case study 56 | is a | leak detection job carried out by ADI Leak Detection
- ADI case study 56 | town | Beaconsfield
- ADI case study 56 | postcode sector | HP9 2
- ADI case study 56 | county | Buckinghamshire
- ADI case study 56 | country | England
- ADI case study 56 | leak type | Swimming pool leak
- ADI case study 56 | service | Swimming Pool Leak Detection
- ADI case study 56 | engineer | Adam Regan
- ADI case study 56 | detection method | Acoustic Listening
- ADI case study 56 | detection method | Pressure Testing
- ADI case study 56 | detection method | Leak Dye
- ADI case study 56 | detection method | Visual Inspection
- ADI case study 56 | symptom | a lot of air getting into the pool pump
- ADI case study 56 | system affected | sump pipework in the filtration room
- ADI case study 56 | test result | pressure test on the sump pipework showed a crack just underneath the concrete
- ADI case study 56 | test result | no anomalies on the hydrophone after the new hydrostatic valve was fitted
- ADI case study 56 | test result | no dye seen being drawn in after the valve repair
- ADI case study 56 | leak location | just underneath the concrete on the sump pipework
- ADI case study 56 | leak cause | crack in the sump pipework
- ADI case study 56 | leak cause | suction pump connection letting by, allowing air into the pump
- ADI case study 56 | access made | concrete broken back to expose the sump pipe
- ADI case study 56 | repair | hydrostatic valve removed underwater and replaced with new
- ADI case study 56 | repair | cracked pipe section cut out, repiped and left to set for 1 hour
- ADI case study 56 | repair | suction pump connection removed and resealed with PTFE tape and sealant
- ADI case study 56 | outcome | repiped section tested and the filtration system put back together and working
- ADI case study 56 | outcome | no more air seen at the pool returns after running in recirculation
- ADI case study 56 | recommendation | allow time for trapped air in the unvented filter to clear back to the pool