Cal. Code Regs. Tit. 8, § 2944.1 - Power Generation
(a) This section provides additional
requirements and related work practices for power generation plants.
(1) Interlocks and other safety devices.
(A) Interlocks and other safety devices shall
be maintained in a safe, operable condition.
(B) No interlock or other safety device shall
be modified to defeat its function, except for test, repair, or adjustment of
the device.
(2) Changing
brushes. Before exciter or generator brushes are changed while the generator is
in service, the exciter or generator field shall be checked to determine
whether a ground condition exists. The brushes shall not be changed while the
generator is energized if a ground condition exists.
(3) Access and working space. The employer
shall provide and maintain sufficient access and working space about electric
equipment to permit ready and safe operation and maintenance of such equipment
by employees.
(4) Rooms and other
spaces containing electric supply equipment shall be guarded in accordance with
the requirements of Article 17 of these Orders.
(5) All live energized parts operating at
more than 50 volts and less than or equal to 600 volts (nominal) shall be
guarded in accordance Section
2340.17 of the LVESO and all live
energized parts operating above 600 volts (nominal) shall be guarded by the
requirements of Article 35 of these Orders.
(b) Water or Steam Spaces. The following
requirements apply to work in water and steam spaces associated with boilers:
(1) A designated employee shall inspect
conditions before work is permitted and after its completion. Eye protection,
or full face protection if necessary, shall be worn at all times when
condenser, heater, or boiler tubes are being cleaned.
(2) Where it is necessary for employees to
work near tube ends during cleaning, shielding shall be installed at the tube
ends.
(c) Chemical
Cleaning of Boilers and Pressure Vessels. The following requirements apply to
chemical cleaning of boilers and pressure vessels:
(1) Areas where chemical cleaning is in
progress shall be cordoned off to restrict access during cleaning. If flammable
liquids, gases, or vapors or combustible materials will be used or might be
produced during the cleaning process, the following requirements also apply:
(A) The area shall be posted with signs
restricting entry and warning of the hazards of fire and explosion;
and
(B) Smoking, welding, and other
possible ignition sources are prohibited in these restricted
areas.
(2) The number of
personnel in the restricted area shall be limited to those necessary to
accomplish the task safely.
(d) Boilers.
(1) Before internal furnace or ash hopper
repair work is started overhead areas shall be inspected for possible falling
objects. If the hazard of falling objects exists, overhead protection such as
planking or nets shall be provided.
(2) When opening an operating boiler door,
employees shall stand clear of the opening of the door to avoid the heat blast
and gases which may escape from the boiler.
(e) Chlorine Systems.
(1) Chlorine system enclosures shall be
posted with signs restricting entry and warning of the hazard to health and the
hazards of fire and explosion.
(2)
Only qualified employees may enter the restricted area. Additionally, the
number of personnel shall be limited to those necessary to accomplish the task
safely.
(3) Emergency repair kits
shall be available near the shelter or enclosure to allow for the prompt repair
of leaks in chlorine lines, equipment, or containers.
(4) Before repair procedures are started,
chlorine tanks, pipes, and equipment shall be purged with dry air and isolated
from other sources of chlorine.
(5)
The employer shall ensure that chlorine is not mixed with materials that would
react with the chlorine in a dangerously exothermic or other hazardous
manner.
(f) Turbine
Generators.
(1) Smoking and other ignition
sources are prohibited near hydrogen or hydrogen sealing systems, and signs
warning of the danger of explosion and fire shall be posted.
(2) Excessive hydrogen makeup or abnormal
loss of pressure shall be considered as an emergency and shall be corrected
immediately.
(3) A sufficient
quantity of inert gas shall be available to purge the hydrogen from the largest
generator.
(g) Coal and
Ash Handling.
(1) Only designated persons
shall operate railroad equipment.
(2) Before a locomotive or locomotive crane
is moved, a warning shall be given to employees in the area.
(3) Employees engaged in switching or dumping
cars shall not use their feet to line up drawheads.
(4) Drawheads and knuckles shall not be
shifted while locomotives or cars are in motion.
(5) When a railroad car is stopped for
unloading, the car shall be secured from displacement that could endanger
employees.
(6) An emergency means
of stopping dump operations shall be provided at railcar dumps.
(7) The employer shall ensure that employees
who work in coal- or ash handling conveyor areas are trained and knowledgeable
in conveyor operation and in the requirements of subsections (g)(8) through
(g)(12) of this section.
(8)
Employees shall not ride a coal or ash-handling conveyor belt at any time.
Employees shall not cross over the conveyor belt, except at walkways, unless
the conveyor's energy source has been deenergized and has been locked out or
tagged in accordance with Section
2940.13.
(9) A conveyor that could cause injury when
started shall not be started until personnel in the area are alerted by a
signal or by a designated person that the conveyor is about to start.
(10) If a conveyor that could cause injury
when started is automatically controlled or is controlled from a remote
location, an audible device shall be provided that sounds an alarm that will be
recognized by each employee as a warning that the conveyor will start and that
can be clearly heard at all points along the conveyor where personnel may be
present. The warning device shall be actuated by the device starting the
conveyor and shall continue for a period of time before the conveyor starts
that is long enough to allow employees to move clear of the conveyor system. A
visual warning may be used in place of the audible device if the employer can
demonstrate that it will provide an equally effective warning in the particular
circumstances involved. However if the employer can demonstrate that the
system's function would be seriously hindered by the required time delay,
warning signs may be provided in place of the audible warning device. If the
system was installed before January 31, 1995, warning signs may be provided in
place of the audible warning device until such time as the conveyor or its
control system is rebuilt or rewired. These warning signs shall be clear,
concise, and legible and shall indicate that conveyors and allied equipment may
be started at any time, that danger exists, and that personnel shall keep
clear. These warning signs shall be provided along the conveyor at areas not
guarded by position or location.
(11) Remotely and automatically controlled
conveyors, and conveyors that have operating stations which are not manned or
which are beyond voice and visual contact from drive areas, loading areas,
transfer points, and other locations on the conveyor path not guarded by
location, position, or guards shall be furnished with emergency stop buttons,
pull cords, limit switches, or similar emergency stop devices. However, if the
employer can demonstrate that the design, function, and operation of the
conveyor do not expose an employee to hazards, an emergency stop device is not
required.
(A) Emergency stop devices shall be
easily identifiable in the immediate vicinity of such locations.
(B) An emergency stop device shall act
directly on the control of the conveyor involved and shall not depend on the
stopping of any other equipment.
(C) Emergency stop devices shall be installed
so that they cannot be overridden from other locations.
(12) Where coal-handling operations may
produce a combustible atmosphere from fuel sources or from flammable gases or
dust, sources of ignition shall be eliminated or safely controlled to prevent
ignition of the combustible atmosphere.
NOTE to subsection (g)(12): Locations that are hazardous because of the presence of combustible dust are classified as Class II hazardous locations. See Section 5174.
(13) An employee shall not work on or beneath
overhanging coal in coal bunkers, coal silos, or coal storage areas, unless the
employee is protected from all hazards posed by shifting coal.
(14) An employee entering a bunker or silo to
dislodge the contents shall wear a body harness with lifeline attached. The
lifeline shall be secured to a fixed support outside the bunker and shall be
attended at all times by an employee located outside the bunker or
facility.
(h) Hydroplants
and Equipment. Employees working on or close to water gates, valves, intakes,
forebays, flumes, or other locations where increased or decreased water flow or
levels may pose a significant hazard shall be warned and shall vacate such
dangerous areas before water flow changes are made.
Notes
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
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