16 Tex. Admin. Code § 65.210 - Standards for Internal Boiler Inspections
(a) The owner or operator shall prepare a
boiler for internal inspection.
(b)
Preparation of the boiler for internal inspection shall include:
(1) all water being drawn off;
(2) the boiler internal watersides thoroughly
washed;
(3) removal of loose scale
as practicable; and
(4) where
boilers are equipped with removable internals, these internals need not be
completely removed provided assurance exists that deterioration in regions
rendered inaccessible by the internals is not occurring to an extent that might
constitute a hazard, or to an extent beyond that found in more readily
accessible parts of the vessel.
(5)
All manholes and handholes, washout plugs, and plugs shall be removed for
complete inspection, as required by the inspector.
(6) The furnace and combustion chambers shall
be cooled and cleaned to provide safe access to the inspector.
(7) Brickwork and refractory shall be removed
as required by the inspector in order to determine the condition of the boiler,
headers, furnace, supports, or other parts.
(8) The pressure gage shall be removed for
cleaning of the siphon and testing, if necessary.
(9) All low-water cutoff devices shall be
dismantled, cleaned, and prepared for inspection. Probe-type low water cutoff
devices shall be removed from the boiler.
(10) The cross-tees and plugs shall be
removed to ensure complete clearance on the water and steam sides.
(11) Before removing the manholes or
handholes and entering any part of the boiler connected to a common header with
other boilers, any leakage of steam or hot water shall be eliminated.
(A) The nonreturn and stop valves shall be
closed, locked out and tagged out and drain valves between the two valves
opened.
(B) The feedwater valves
must be closed, locked out and tagged out.
(C) After draining the boiler, the blowdown
valves shall be closed, locked out and tagged out.
(D) Blowdown lines, where practicable, shall
be disconnected between pressure parts and valves.
(E) All vent and drain lines shall be
opened.
(12) Gaskets on
manholes and handholes of pressure-retaining items, with exception of access
and inspection doors of furnace and convection pass, shall be replaced with new
gaskets upon reinstallation.
(A) Re-use of
gaskets is prohibited.
(B) Gaskets
shall be installed in accordance with the manufacturer's
recommendations.
(C) The use of
sealing compounds is prohibited on manhole and handhole gaskets on water/steam
pressure parts.
(c) If the boiler is jacketed so that the
seams of shells, drums, or domes cannot be seen, enough of the jacketing,
setting wall, or other form of casing or housing shall be removed to permit
inspection to determine the safety of the boiler, provided such information
cannot be determined by other means.
Notes
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No prior version found.