Ohio Admin. Code 1301:3-4-03 - Operating criteria - required equipment
All historical boilers shall be equipped with the following:
(A) A safety valve set to
relieve at or below the safe working pressure of the boiler. The safety valve
shall be certified by the national board of boiler and pressure vessel
inspectors. The safety valve shall be sealed in a manner that does not allow
tampering with the valve setting without destroying the seal. The boiler may be
equipped with a y-base or an unrestricted tee to accommodate the installation
of multiple safety valves, as necessary. During the required operational
inspection, it shall be demonstrated to the inspector that the certified safety
valve lifts at its certified setting with live steam only. The required
pressure relief valve capacity shall not be less than seven pounds per hour per
square foot of heating surface of the boiler.
(B) A pressure gage connected to its steam
space. The gage shall contain some form of a siphon device, which shall develop
and maintain a water seal that shall prevent steam from entering the gage tube.
The gage shall be proven accurate each year by being tested with a dead weight
tester or an approved calibrated test gage. The results of the test shall be
documented in the log book and shall be furnished to the inspector.
(C) A fusible plug must be manufactured to conform to section I
appendix A-19 of the 2004 ASME Boiler and Pressure Vessel Code with "ASME Std."
stamped on the filler material. Fusible plugs shall be replaced every three
years, and the replacement shall be witnessed by the inspector. Fireside
fusible plugs shall protrude a minimum of one inch into the water. Waterside
fusible plugs shall not protrude into the fire area more than three quarters of
an inch. Fusible plugs shall not be refilled.
(D) A fully operational gage glass fitted
with a protective guard. The gage glass shall indicate the minimum safe
operating water level, and shall be
provided with a drain valve or petcock.
(E) Fully operational try-cocks correctly
located in reference to the minimum required water level.
Notes
Promulgated Under: 119.03
Statutory Authority: 4104.34
Rule Amplifies: 4104.35, 4104.36
Prior Effective Dates: 05/27/2003 (Emer.), 04/30/2006, 11/30/2006
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