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OSHA Regulations
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 fi eld
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, except when used in total
conformance with paragraph (h) of this section.
(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) The safety distance (Ds) from the sensing fi eld
to the point of operation shall be greater than the
distance determined by the following formula:
Ds = 63 inches/second X T,
Where:
Ds=minimum safety distance (inches); 63
inches/second=hand speed constant;
and
Ts=stopping time of the press measured at
approximately 90° position of crankshaft rotation
(seconds).
(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 modifi cation 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 certifi cation record
of inspections, which includes the date of
inspection, the signature of the person who
performed the inspection and the serial
number, or other identifi er, of the power
press that was inspected.
(ii) Each press shall be inspected and tested no
less than weekly to determine the condition
of the clutch/brake mechanism, anti-repeat
feature and single stroke mechanism.
Necessary maintenance or repair or both
shall be performed and completed before
the press is operated. These requirements
do not apply to those presses, which comply
with paragraphs (b) (13) and (14) of this
section. The employer shall maintain a
certification record of inspections, tests
and maintenance work which includes the
date of inspection, test or maintenance; the
signature of the person who performed the
inspection, test, or maintenance, and the
serial number or identifi er of the press that
was inspected, tested or maintained.
Regulations & Guidelines for
Safe Operation
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