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Blog Posts by Roy Sullivan
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Roy Sullivan

Roy has extensive experience in legal and statutory standards, along with clinical guidelines, corporate governance and industry best practice across many disciplines, including Fire, Water, Medical and Natural Gas, Ventilation, Boiler and Pressure systems and power systems.
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Recent Posts

Sampling processes 3.jpg
Legionella sampling: Part 3 - Testing methods & what next?
by Roy Sullivan, on 07-03-2023
As a recap on the firstand second parts of this blog series on sampling, we’ve already covered; sampling strategy, taking a water sample and the chain of custody. In this final blog of the series,...
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water sampling
Legionella sampling: Part 2 - technique & chain of custody
by Roy Sullivan, on 13-12-2022
Last week we looked at the planning process required before any samples are taken. This week we get down to the ‘nuts and bolts’ of bottle filling.
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Sampling 1: Considerations for your water sampling strategy
Legionella sampling: Part 1 - What's your sampling strategy?
by Roy Sullivan, on 06-12-2022
Sampling of water systems for Legionella, Pseudomonas aeruginosa or bacteriological can be somewhat daunting, with thoughts of ‘do I need to sample’, ‘how to take a sample’ and ‘where should I send...
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Legionella Incident Investigation – What’s involved?
by Roy Sullivan, on 21-10-2022
Sampling for Legionella should be routinely carried out as indicated by your Legionella risk assessment. A sampling plan can then be created. BS8554 and BS7592-2022 Sampling for Legionella bacteria...
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Pseudomonas aeruginosa positive results
I have a Pseudomonas aeruginosa count – what next?
by Roy Sullivan, on 02-08-2022
To understand the actions that should be taken when a positive Pseudomonas aeruginosa [P. aeruginosa] test result is received, it is prudent to first understand more about this opportunistic...
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Water Safety Projects: Design Control – Getting it right!
by Roy Sullivan, on 29-06-2022
Historically, the interface between stakeholders involved in projects (i.e. new developments or refurbishments) and the Water Safety Group [WSG] has always been somewhat limited. This may be due to...
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BS 7592: 2022 Sampling for Legionella - What’s new?
by Roy Sullivan, on 10-05-2022
BS 7592 has recently undergone a re-write which resulted in extensive changes. There are 3 new annexes with greater emphasis being placed on the competency of all involved in the sampling process.
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Most common ways of contracting Legionnaires’ Disease.
by Roy Sullivan, on 16-03-2022
Legionnaires’ disease was first recognised in July 1976 and since then more than 60 species have been identified. It is a naturally occurring organism and can be found in ponds, rivers, and lakes....
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