NZQA registered unit standard version 2 Page 1 of 5

Transcription

1 Page 1 of 5 Title Manage water quality in a complex public pool Level 4 Credits 15 Purpose This unit standard is intended for people working in a complex public pool and who are responsible for the quality of the water. People credited with this unit standard are able to: describe pool water treatment and related equipment; operate pool equipment for water quality; test water quality and interpret the results; carry out corrective procedures to ensure water quality; and explain planned preventative maintenance in relation to pool water treatment equipment, in a complex public pool. Classification Recreation and Sport > Recreation and Sport - Aquatics Available grade Achieved Explanatory notes 1 The following legislation and New Zealand Standards are relevant to this unit standard: Health and Safety in Employment Act 1992; NZS 4441:2008 Swimming pool design Standard; NZS 5826:2010 Pool water quality, available from 2 Underpinning skills and knowledge useful for this unit standard could be evidenced by the holding of Unit 20046, Monitor pool water quality and store pool water treatment chemicals, and Unit 25982, Demonstrate knowledge of microbiology and perform calculations relevant to water quality in a public pool. 3 Definitions Organisational requirements refer to policy and procedures of the public pool and include compliance with any applicable legislation, standards, and codes. Public pool is defined in NZS 5826:2010 as the pool or pools, their fixtures and surrounds, shower and changing areas, fun equipment, play areas, and attached facilities where they exist. A complex public pool tends to have the following characteristics: high bather loads; secondary water treatment; a high level of automation; and pool water features. Pool water features refer to interactive equipment provided for water play such as hydro slide, wave machine, etc.

2 Page 2 of 5 Outcomes and evidence requirements Outcome 1 Describe pool water treatment and related equipment in a complex public pool. 1.1 Filtration systems are described in terms of purpose, operation and maintenance requirements. sand, vacuum DE (diatomaceous earth), pressure DE. 1.2 Recirculation systems are described in terms of purpose, operation and maintenance requirements. balance tank, pump, inlet and outlet structures. 1.3 Relationships between pool volume, turnover rate, filtration rates, and bather loading are explained in relation to water treatment equipment in complex public pools. 1.4 Chlorine disinfection dosing systems are described in terms of purpose, operation and maintenance requirements. 1.5 ph and alkalinity dosing systems are described in terms of purpose, operation and maintenance requirements. includes but is not limited to sodium bicarbonate, carbon dioxide. 1.6 Alternative disinfection systems are described in terms of purpose and operation. may include but is not limited to chlorine dioxide, ozone, mixed oxidants, ultra violet. 1.7 Sodium thiosulphate is described in terms of purpose, and a dose rate is calculated. 1.8 Pool water features are described in terms of implications for water treatment. includes but is not limited to hydro slide, lazy river, water playground, wave machine, bubble pit.

3 Page 3 of 5 Outcome 2 Operate pool equipment for water quality in a complex public pool. 2.1 Filtration is monitored and operated in accordance with organisational requirements. 2.2 Recirculation system is monitored, operated, and maintained in accordance with organisational requirements. 2.3 Dosing systems are monitored, operated, and maintained in accordance with organisational requirements. chlorine, ph, cyanuric acid, calcium hardness, coagulant. Outcome 3 Test water quality and interpret the results in a complex public pool. 3.1 Differences in testing requirements between a swimming pool or leisure pool and a spa or hydrotherapy pool are explained in relation to NZS 5826: Water quality testing is carried out in accordance with organisational requirements and NZS 5826:2010. swimming pool or leisure pool, spa pool; tests for ph, FAC (free available chlorine), TAC (total available chlorine), CAC (combined available chlorine), cyanuric acid, TDS (total dissolved solids), calcium hardness, alkalinity; test methods may include but are not limited to titration, photometer, colourometric measurement, calculation. 3.3 Results of water quality testing are recorded in accordance with organisational requirements or NZS 5826:2010. ph, FAC, TAC, CAC, cyanuric acid, TDS, calcium hardness, alkalinity. 3.4 Interpretation of recorded water quality test results is in accordance with NZS 5826:2010.

4 Page 4 of 5 Outcome 4 Carry out corrective procedures to ensure water quality in a complex public pool. 4.1 Corrective procedures and associated calculations are carried out in accordance with organisational requirements. ph, FAC, CAC, cyanuric acid, calcium hardness, alkalinity. 4.2 Calculations are performed in relation to automated chemical corrective procedures to ensure accuracy in accordance with NZS 5826:2010. may include but is not limited to CAC, TDS reduction, super chlorination, chlorine dioxide. Outcome 5 Explain planned preventative maintenance in relation to pool water treatment equipment in a complex public pool. 5.1 Planned preventative maintenance of pool water treatment equipment is explained in terms of ongoing management of pool water quality. pumps, filters, chemical dosing systems. Replacement information This unit standard replaced unit standard 5692 and unit standard Planned review date 31 December 2013 Status information and last date for assessment for superseded versions Process Version Date Last Date for Assessment Registration 1 12 February December 2011 Revision 2 18 February 2011 N/A Accreditation and Moderation Action Plan (AMAP) reference 0099 This AMAP can be accessed at

5 Page 5 of 5 Please note Providers must be granted consent to assess against standards (accredited) by NZQA, or an inter-institutional body with delegated authority for quality assurance, before they can report credits from assessment against unit standards or deliver courses of study leading to that assessment. Industry Training Organisations must be granted consent to assess against standards by NZQA before they can register credits from assessment against unit standards. Providers and Industry Training Organisations, which have been granted consent and which are assessing against unit standards must engage with the moderation system that applies to those standards. Consent requirements and an outline of the moderation system that applies to this standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The AMAP also includes useful information about special requirements for organisations wishing to develop education and training programmes, such as minimum qualifications for tutors and assessors, and special resource requirements. Comments on this unit standard Please contact info@skillsactive.org.nz if you wish to suggest changes to the content of this unit standard.