Utah Administrative Code
Topic - Health
Title R392 - Population Health, Environmental Health
Rule R392-302 - Design, Construction and Operation of Public Pools
Section R392-302-20 - Return Inlets
Universal Citation: UT Admin Code R 392-302-20
Current through Bulletin 2024-06, March 15, 2024
(1) The manager shall ensure that:
(a) return inlets for
potable or treated water are:
(i) located to
facilitate:
(A) uniform circulation of water;
and
(B) a uniform disinfectant
residual throughout the entire pool; and
(ii) hydraulically sized to provide the
designed flow rate for each zone of multi-zoned pools based on the designed
turnover rate for each zone;
(b) if wall inlets from the circulation
system are used, each wall inlet is:
(i) flush
with the pool wall, and located:
(A) at least
five feet below the normal water level; or
(B) at the bottom of the vertical wall
surface tangent to the arc forming the transition between the vertical wall and
the floor of the pool;
(ii) except as provided in Subsection
R392-302-37(4)
and Subsection R392-302-38(1)(g),
spaced no greater than every ten feet around the pool perimeter; and
(iii) designed as a directionally adjustable
and lockable orifice with sufficient head loss to ensure balancing of flow
through each wall inlet as related to the other wall inlets such that:
(A) the return loop piping is sized to
provide less than 2-1/2 feet of head loss to the most distant orifice to ensure
equal flow through all orifices; and
(B) wall inlets are locked in place once
adjusted for uniform circulation.
(2) If floor inlets are installed in addition to wall inlets, the manager shall ensure there is a minimum of one row of floor inlets centered in the pool width with piping installed in accordance with Subsection R392-302-19(3) such that:
(a) individual floor inlets and
rows of floor inlets are spaced a maximum of 15 feet from each other;
and
(b) floor inlets are at least
15 feet from a pool wall with wall inlets.
(3) If floor inlets from the circulation system are used, the manager shall ensure each floor inlet is:
(a) flush with the floor;
(b) placed at no more than 15 foot intervals
from other floor inlets;
(c) spaced
no more than 7-1/2 feet from the pool wall if there are no wall inlets on that
wall;
(d) designed such that the
flow can be adjusted to provide sufficient head loss to ensure balancing of
flow through all floor inlets; and
(e) designed such that the flow cannot be
adjusted without the use of a tool such that:
(i) the return supply piping is sized to
provide less than 2-1/2 feet of head loss to the most distant floor inlet to
ensure equal flow through all floor inlets; and
(ii) floor inlets are locked in place once
adjusted for uniform circulation.
(4) The local health officer may:
(a) exempt the inlet placement requirements
for inlet designs that can be demonstrated to produce uniform mixing of pool
water through a dye test;
(b)
reduce the head loss requirement if the manager can demonstrate that at least a
6:1 pressure ratio from orifice to the return loop is maintained; and
(c) require floor inlets to be installed in
addition to wall inlets if a pool has a width greater than 50 feet.
Disclaimer: These regulations may not be the most recent version. Utah may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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