Page 107 - Vessel Sanitation Program 2018 Construction Guidelines

VSP 2018 Construction Guidelines

For a RECREATIONAL WATER FACILITY in sea-to-sea mode, ensure a
TURNOVER rate of once per hour.

For facilities that meet the definition of more than one type of RECREATIONAL
WATER FACILITY, the more protective turnover rate applies. For example, if a
CHILDREN’S POOL also has features of an INTERACTIVE RECREATIONAL
WATER FACILITY or ACTIVITY POOL, the TURNOVER rate must be 0.5 hours.

29.11 Primary Disinfection and pH Control

29.11.1 Installation
Install independent automatic analyzer-controlled HALOGEN-based
DISINFECTION and PH dosing systems for each RECREATIONAL WATER
FACILITY or combined RECREATIONAL WATER FACILITIES as allowed
in sections 25.3 and 25.6. The analyzer must be capable of measuring
HALOGEN levels in MG/L (ppm) and PH levels. Analyzers must have digital
readouts that indicate measurements from the installed analyzer probes.

29.11.2 Monitoring and Recording
Provide an automatic monitoring and recording system for the free HALOGEN
residuals in MG/L (ppm) and PH levels. The recording system must be capable
of recording these levels 24 hours/day.

Install chart recorders or electronic data loggers with CERTIFIED DATA
SECURITY FEATURES that record PH and HALOGEN measurements.

If POTABLE WATER is introduced into RECREATIONAL WATER
FACILITIES with recirculated water after filtration and chemistry control and
the POTABLE WATER combines with the RECREATIONAL WATER
FACILITY recirculation system, the POTABLE WATER must be
HALOGENATED and PH controlled to the level required for the
RECREATIONAL WATER FACILITY. The resulting mixture would
negatively impact the monitoring analyzer for the RECREATIONAL WATER
FACILITY.

Electronic data loggers must be capable of recording in increments of
≤15 minutes. Written documentation from the data logger manufacturer, such as
a letter or instruction manual, must be provided to verify that the features are
secure.

The probe for the automated analyzer recorder must be installed before the
compensation or make-up tank or from a line taken directly from the
RECREATIONAL WATER FACILITY.

Install appropriate sample taps for analyzer calibration.

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