SmartPAC 2 with WPC Integration 1126800
Excerpts from OSHA Regulations and ANSI Standards Appendix A page 429
Excerpts from OSHA Regulation 1910.217
OSHA Regulations
PMA Interpretation
and
T
s
= stopping time of the press measured
approximately 90
° position of crankshaft
rotation (seconds)
percentage factor must be added to the measure time
to obtain the factor for use in the equation for
determining safety distance. A percentage factor of
20% is recommended for presses with new brakes or
brakes of good condition. For older brakes, a 10%
factor is recommended.
Example:
Measured stopping time = 0.190
Time factor = 1.2 x 0.19 x = 0.228 seconds
Calculation = 63 x 0.228
Safety distance = 14.4 inches
(f) Guards shall be used to protect all
areas of entry to the point of operation not
protected by the presence-sensing device.
(3) (iii) (f) Great care must be taken to assure that no
access to the die area exists unguarded.
OSHA 1910.217 (c) (3) (5)
(5) Additional requirements for safe-guarding.
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 of Type B gate or movable barrier
(on a part revolving clutch) is used for
safeguarding:
This paragraph tells the condition under which a brake
monitoring system is required after November 1,
1975.
(i) The employer shall use a control system
and brake monitor which comply with
paragraphs (b) (13) and (14) of this section.
This requirement should be complied with by
November 1, 1975.
(b) (13) Control reliability
(b) (14) Construction requirements.
OSHA 1910.217 (c) (3) (vii) (c)
(c) The safety distance (D
s
) between each
two hand control device and the point of
operation shall be greater than the distance
determined by the following formula:
Ds = 63 inches/second x T
s
, where:
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