// CODE SNIPPET
1112.5.1 Hydrostatic Expansion During Normal Operation
JUMP TO FULL CODE CHAPTER
Where trapping of liquid with subsequent
hydrostatic expansion is capable of occurring automatically
during normal operation or during standby, shipping,
or power failure, engineering controls shall be used
that are capable of preventing the pressure from exceeding
the design pressure. Acceptable engineering controls
include but are not limited to the following:
- Pressure relief device to relieve hydrostatic pressure to another part of the system.
- Reseating pressure relief valve to relieve the hydrostatic pressure to an approved treatment system. [ASHRAE 15:9.4.3.1]
Related Code Sections
1112.5.1 Refrigeration, Hydrostatic Expansion During Normal Operation
Where trapping of liquid with subsequent
hydrostatic expansion is capable of occurring automatically
during normal operation or during standby ...
California Mechanical Code 2019 > 11 Refrigeration > 1112.0 Pressure-Relief Devices > 1112.5 Hydrostatic Expansion > 1112.5.1 Hydrostatic Expansion During Normal Operation
1209.0 Hydronics, Expansion Tanks
installation instructions. Each tank shall be
equipped with a shutoff device that will remain open during
operation of the heating system. Valve handles shall ...
1004.0 Boilers and Pressure Vessels, Expansion Tanks
-water-heating systems incorporating hot water tanks
or fluid relief columns shall be installed to prevent freezing
under normal operating conditions ...
1004.0 Boilers and Pressure Vessels, Expansion Tanks
Hot-water-heating systems incorporating hot water tanks
or fluid relief columns shall be installed to prevent freezing
under normal operating ...
1209.0 Hydronics, Expansion Tanks
is designed to operate at more than 30 pounds-force per square inch (psi) (207 kPa). Tanks shall be rated for the pressure of the system. Expansion ...