Pinnacle Systems SLT Series - Manual (Page 28)

A-4
Appendix A:
Regulations & Guidelines for Safe Operation
SLT Series
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1910.217 (C) (3) (iii)
Safeguarding the Point of Operation
(iii) A presence sensing point of operation device shall
protect the operator as provided in paragraph (c) (3) (i)
(a) of this section, and shall be interlocked into the control
circuit to prevent or stop slide motion if the operator ’s
hand or other part of his body is within the sensing field
of the device during the downstroke of the press slide.
(a) The device may not be used on machines using
full revolution clutches.
(b) The device may not be used as a tripping means
to initiate slide motion.
(c) The device shall not be constructed so that a
failure within the system does not prevent the
normal stopping action from being applied to
the press when required, but does prevent the
initiation of a successive stroke until the failure
is corrected. The failure shall be indicated by
the system.
(d) Muting (bypassing of the protective function) of
such device, during the upstroke of the press
slide, is permitted for the purpose of parts
ejection, circuit checking, and feeding.
(e) Refer to ANSI B11.19-2003 for calculating safety
light curtain distance from the point of operation.
(f) Guards shall be used to protect all areas of entry
to the point of operation not protected by the
presence sensing device.
1910.217 (C) (3) (iii)
Additional requirements for safeguarding
Where the operator feeds or removes parts by placing
one or both hands in the point of operation and a two
hand control presence sensing device or Type B gate or
movable barrier (on a part revolution clutch) is used for
safeguarding:
(i) The employer shall use a control system and a
brake monitor which comply with paragraphs
(b) (13) and (14) of this section.
(e) Inspection, maintenance, and modification of
presses-
(i) It shall be the responsibility of the employer
to establish and follow a program of periodic
and regular inspections of his power
presses to insure that all their parts, auxiliary
equipment, and safeguards are in a safe
operating condition and adjustment. The
employer shall maintain records of these
inspections and maintenance work
performed.
1910.212
General requirements for all machines (covers press
brakes, hydraulic and pneumatic machines not
covered by mechanical power press standards)
(a) Machine guarding - (1) Types of guarding. One
or more methods or machine guarding shall be
provided to protect the operator and other
employees in the machine area from hazards
such as those created by point of operation
ingoing nip points, rotation parts, flying chips and
sparks. Examples of guarding methods are:
barrier guards, two-handed tripping devices,
electronic safety devices, etc.
NOTE: These are only partial reprints, refer to your
Federal Register for total construction, control reliability,
and machine guarding requirement s for the subject
machine being guarded for all applicable OSHA
Standards.