Current through Register 2024 Notice Reg. No. 38, September 20, 2024
(a) Hydraulic power presses shall be guarded
in a manner that will accomplish the following:
(1) Restrain the operator(s) from
inadvertently reaching into the point of operation, or
(2) Inhibit machine operation if the
operator's hand or hands are inadvertently within the presence sensing field or
inadvertently within or placed within the point of operation, or
(3) Automatically withdraw the operator's
hands if they are inadvertently within the point of
operation.
(b) Devices
that will accomplish (a)(1), (2) or (3) above include, but are not restricted
to those listed below:
(1) Presence-sensing
devices
(2) Holdout or restraint
devices
(3) Pullout
devices
(4) Two-hand control
devices [see 4193(e)]
(5) Gate or
movable barrier devices
(6) Fixed
barrier guard (see 4207).
(7) Any
other system of guards, automatic or semi-automatic feeds, etc., that will
allow the material to be worked and effectively prevent the operator's hand(s)
from entering or being in the point of operation during the die-closing portion
of the press stroke.
(c)
Inch. Inching controls shall comply with Section
4193(d).
(d) Point of operation guards and devices
shall comply with Sections
4207 and
4208 respectively.
(e) Hydraulic Equipment. The maximum design
working pressures in any hydraulic system on a hydraulic powered press shall
not exceed the safe working pressure rating of any component used in that
system.
(f) Press Control Systems.
(1) Stop Control. At least one of the
following shall be provided as a means of stopping press motion:
(A) Stop. A means of stopping all press
motion. Actuation of the stop control shall immediately deactivate all press
controls. The stop control shall override any other control.
(B) If a stop button is provided, it shall
stop the press slide(s) and/or return the slide(s) to the initial starting
position.
(2) Mode
Selector. When more than one mode is furnished, a means of selecting the
different modes such as Off, Inch, Single Cycle, and Automatic shall be
supplied with the press control. Selection shall be by means capable of being
supervised by the employer. It is not intended that all these press modes be
required or be limited to the above.
(A) Off.
The off mode shall make the press control inoperative.
(B) Inch. Press controls which provide this
mode shall require the following conditions:
(i) The slide will have motion only during
the time of operation of the actuating control(s) used for this mode.
(ii) The inching control cannot set up an
unintended movement by contacting or overriding the stroke limiting
mechanisms.
(C) Single
Cycle. Press controls which have this mode shall require that:
(i) Actuation of the operating controls shall
initiate the cycle.
(ii)
Re-actuation of operating controls is required to initiate a new
cycle.
(iii) The control system
shall be designed to require an intended action of the operator before an
interrupted cycle can be resumed.
(D) Automatic. Press controls which contain
the automatic mode shall be designed so that the initiation of automatic run
shall require an action by the operator in addition to the selection of
automatic on the mode selector by the supervisor, before actuation of the
operating means will result in automatic cycling. An interrupted automatic
cycle must be initiated as specified in this paragraph.
(3) Actuating Control Selection. If more than
one actuating means is provided, the selection method shall be designed so that
the selection is controlled by the employer.
(4) Press Control Reliability. When required
by Section 4193(m) the press
control shall be designed to prevent initiation of a successive stroke signal
in the event that a failure occurs within the press
control.
1. New
section filed 11-17-82; effective thirtieth day thereafter (Register 82, No.
47).
2. Amendment of subsection (f)(4) filed 10-31-85; effective
thirtieth day thereafter (Register 85, No. 44).
Note: Authority cited: Section
142.3, Labor
Code. Reference: Section
142.3, Labor
Code.
