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TITLE 25HEALTH SERVICES
PART 1DEPARTMENT OF STATE HEALTH SERVICES
CHAPTER 265GENERAL SANITATION
SUBCHAPTER LSTANDARDS FOR PUBLIC POOLS AND SPAS
RULE §265.187Circulation Systems for Post-10/01/99 and Pre-10/01/99 Pools and Spas

(a) Suction outlet covers or grates for post-10/01/99 and pre-10/01/99 pools and spas. Suction outlet covers or grates must be provided for post-10/01/99 and pre-10/01/99 pools and spas in accordance with §265.190(c) of this title (relating to Suction Outlets and Return Inlets in Post-10/01/99 and Pre-10/01/99 Pools and Spas). If the owner or operator of a post-10/01/99 or pre-10/01/99 pool or spa knows or should have known in the exercise of ordinary care that a suction outlet cover or grate is missing, broken, or loose, the pool or spa must be closed immediately and the pump(s) must be shut off. The pool or spa must remain closed until a proper repair or replacement has been accomplished.

(b) General circulation requirements for post-10/01/99 pools and spas. In post-10/01/99 pools and spas, a circulation system consisting of pumps, piping, return inlets and suction outlets, filters, and other necessary equipment shall provide complete and uniform circulation of water and be designed to accommodate 100% of the turnover flow rate and maintain the distribution of disinfectant residual through all parts of the pool or spa.

  (1) The system shall be designed to give the proper turnover rate based on the manufacturer's specified maximum pressure and flow through of the filter. (Also refer to §265.203(c) of this title (relating to Operation and Management of Post-10/01/99 and Pre-10/01/99 Pools and Spas.) The equipment shall be of adequate size to turn over the entire pool or spa water capacity as follows:

    (A) a turnover rate of 6 hours is required for post-10/01/99 pools with average depths of 4 feet or greater;

    (B) turnover rates in pools with shallower average depths shall be calculated based upon the formula: average depth in feet times 1.5 shall be the required turnover rate; for example, a pool with an average depth of 3 feet will require a 4.5 hour turnover rate;

    (C) a spa recirculation system shall turn over the entire spa water capacity at a minimum of once every 30 minutes based on the manufacturer's recommended rate of the filter, with a clean filter; and

    (D) the turnover rate for a wading pool shall be at least once per hour.

  (2) Circulation system components that require replacement or servicing shall be accessible for inspection, repair, or replacement, and shall be installed according to manufacturer's instructions.

  (3) Pool and spa equipment and related plumbing shall be supported to prevent damage from misalignment, settlement, or similar activities. The equipment shall be mounted to minimize the potential for the accumulation of debris and moisture, following manufacturer's instructions.

  (4) The water velocity in the pool and spa piping shall not exceed 10 feet per second for discharge piping (except for copper pipe where the velocity shall not exceed 8 feet per second), and 6 feet per second for suction piping, and 1.5 feet per second velocity through suction grates unless the suction outlet meets the requirements of ASME/ANSI A112.19.8M and is rated under such standard at a higher flow rate. Pool and spa piping shall be sized to permit the rated flows for filtering and cleaning without exceeding the maximum head of the pump.

  (5) Circulation system piping, other than that integrally included in the manufacture of the pool or spa, shall be subject to an induced static hydraulic pressure test for 6 hours at a pressure 50% greater than the maximum design operating pressure of the system or 25 pounds per square inch, whichever is less. This test shall be performed before the deck is poured, and the pressure shall be maintained throughout the deck pour.

  (6) The circulation system piping and fittings shall be non-toxic, and shall be of material(s) able to withstand operating pressures and operating conditions. Polyvinyl chloride pipe shall bear the NSFI seal for potable water and be schedule 40 or stronger.

  (7) Pool or spa piping subject to damage by freezing shall have a uniform slope in one direction and equipped with valves for adequate drainage or shall be capable of evacuating water to prevent freezing and possible damage. Pool or spa piping shall be adequately supported and designed to prevent entrapment of air, water or dirt. Provision shall be made for expansion or contraction of pipes.

  (8) Equipment shall be designed and fabricated to drain the pool or spa water from the equipment, by removal of drain plugs and manipulating valves, or by other methods.

  (9) Post-10/01/99 pools and spas shall be equipped with the following:

    (A) a pump suction (vacuum) gauge installed as close to the suction side of the pump as possible without sacrificing accuracy;

    (B) a filter inlet pressure gauge installed in the area of greatest pressure;

    (C) a filter outlet gauge; and

    (D) a flow meter that is located to show the rate of flow through the filter in gallons per minute and that is represented by the manufacturer to be accurate within 10% of true flow and capable of measuring flow of at least 1.5 times the design flow rate of the circulation system.

(c) General circulation requirements for pre-10/01/99 pools and spas. In pre-10/01/99 pools and spas, a circulation system consisting of pumps, piping, return inlets, suction outlets, filters, and other necessary equipment shall provide complete and uniform circulation of water and be designed to maintain distribution of disinfectant through all parts of the pool or spa.

  (1) Equipment in pre-10/01/99 pools shall be designed to provide a turnover rate of 8 hours or less, providing a minimum turnover of at least 3 times in 24 hours. Water quality as required in §265.203(b) of this title must be maintained at all times.

  (2) Equipment in pre-10/01/99 spas shall be designed to provide a turnover rate of 30 minutes or less.

  (3) Equipment in pre-10/01/99 wading pools shall be designed to provide a turnover rate of 1 hour or less unless the wading pool flows by gravity to a pool, in which case the turnover requirements for the pool shall apply to the wading pool.

  (4) Piping in pre-10/01/99 pools and spas shall be of non-toxic material, resistant to corrosion and able to withstand operating pressures.

  (5) In pre-10/01/99 pools, a vacuum cleaning system shall be provided. Any vacuum outlets in pre-10/01/99 pools and spas must comply with §265.190(g) of this title.

  (6) Pumps on pre-10/01/99 pools and spas should be located so as to eliminate the need for priming whenever possible. If the pump or suction piping is located above the water level, the pump should be self-priming. Under normal conditions, the pump or pumps should supply the circulation flow rate at a dynamic head of at least 40 feet.

  (7) Pre-10/01/99 pools and spas shall be equipped with the following:

    (A) a pump suction (vacuum) gauge installed as close to the suction side of the pump as possible without sacrificing accuracy;

    (B) a filter inlet pressure gauge installed in the area of greatest pressure;

    (C) a filter outlet gauge; and

    (D) a flow meter that is located to show the rate of flow through the filter in gallons per minute and that is represented by the manufacturer to be accurate within 10% of true flow and capable of measuring flow of at least 1.5 times the design flow rate of the circulation system.

(d) Labeling of exposed piping for post-10/01/99 and pre-10/01/99 pools and spas. Exposed piping in post-10/01/99 and pre-10/01/99 pools and spas shall be labeled to identify the piping function and direction of flow. The name of the liquid or gas and arrows indicating direction of flow, shall be permanently indicated on the pipe.


Source Note: The provisions of this §265.187 adopted to be effective September 1, 2004, 29 TexReg 7704

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