PAS 39:2003 pdf download Management of public swimming pools — Water treatment systems, water treatment plant and heating and ventilation systems — Code of practice
1Scope
This Code of Practice contains general operational and safety recommendations for the management ofpublic swimming pool water treatment systems, water treatment plant, and heating and ventilation
systems in the UK.
This Code contains a number of examples, many of which reler to the use of chlorine-based disinfectantswhich are in common use in the UK at present. This however is not intended to preclude the use of otherdisinfection methods (see 5.2.5)
2 Normative references
The following normative documents contain provisions which, through reference in this text, constituteprovisions ofthis Code ofPractice. For dated references. subsequent amendments to, or revisions of, any ofthese publications do not apply. For undated references the latest edition of the publication referred toapplies.
BS EN 13451-3, Swimming pool equipment – Part 3: Additional specific safety reguirements and testmethods for pool fittings for water treatment purposes.
BS EN ISO 6222, Water quality – Enumeration ofculturable micro-organisms – Colony count byinoculation in a nutrient agar culture medium.(BS 60684.5)Swimming pool water treatment and guality standards, Pool Water Treatment Advisory Group 1999(ISBN 0 951 70076 6).1)
3 Terms and definitions
For the purposes of this Code of Practice the following terms and definitions apply
3.1
bathing load
number of people in the pool
3.2
combined chlorine
measure of the chloramines (by-products of chlorine and ammonia)
3.3
circulation rate
flow of water measured in m/h to and from the pool through the pipework and treatment system
3.4
deck-level
a pool with the water and poolside deck at the same level. and having a perimeter gutter to remove surfacewater
3.5
headloss
difference in water level between the upstream and downstream sides of a treatment process attributed tofriction losses
NOTE Sometimes called “pressure drop”
3.6
turbidity
reduction of transparency of a water caused by colloidal or particulate matter in suspension
3.7
turnover period
time taken for a volume of water equivalent to the entire pool water volume to pass through the treatmentplant and back to the pool
3.8
nephelometric turbidity unit (NTU)unit of measure used in the measurement of turbidity by instrumentation
3.9
public pool
any non-domestic pool, e.g. local authority pool, community pool, school pool, hotel pool, club pool, etc.
3.10
filtration
removal of colloidal or particulate matter by passing the pool water through a filter media, usually a sand
bed
3.11
coagulation
use of materials called flocculants or coagulants to enhance the removal of dissolved, suspended or colloidalmatter by improving the filtration efficiency
8.12
disinfection
process of minimizing potentially harmful micro-organisms in pool water
4 Management system
4.1 General requirements
UK law stipulates that swimming pools should be managed in accordance with the Health and Safety atWork etc. Act 1] and the Management of Health and Safety at Work Regualations 1999 (4) This Code otPractice provides practical advice on ways to comply with the law relating to the management of healthand safety in swimming pools and, in particular, those aspects concerned with pool water treatment.
4.2 Management responsibility
4.2.1 Policy
Senior management (those who are legally responsible) should define and document a policy for the generaoperation and safety of swimming pool water treatment systems.Senior management should ensure that this policy is communicated, implemented and maintainedthroughout the organization.
4.22 Management review
Senior management should review the swimming pool water treatment system, the pool hall ventilationsystem and the pool hall heating system, in principle, continuously, and formally at planned intervals,e.g. at least annually,to ensure its continuing suitability, adequacy and effectiveness.