29 Cfr 1910.218

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Title 29: Labor
PART 1910—OCCUPATIONAL SAFETY AND HEALTH STANDARDS
Subpart O—Machinery and Machine Guarding

§1910.218 Forging machines.
· (a) General requirements—(1) Use of lead. The safety requirements of this subparagraph apply
to lead casts or other use of lead in the forge shop or die shop.
· (i) Thermostatic control of heating elements shall be provided to maintain proper melting
temperature and prevent overheating.
· (ii) Fixed or permanent lead pot installations shall be exhausted.
· (iii) Portable units shall be used only in areas where good, general room ventilation is provided.
· (iv) Personal protective equipment (gloves, goggles, aprons, and other items) shall be worn.
· (v) A covered container shall be provided to store dross skimmings.
· (vi) Equipment shall be kept clean, particularly from accumulations of yellow lead oxide.
· (2) Inspection and maintenance. It shall be the responsibility of the employer to maintain all forge
shop equipment in a condition which will insure continued safe operation. This responsibility includes:
· (i) Establishing periodic and regular maintenance safety checks and keeping certification records
of these inspections which include the date of inspection, the signature of the person who performed the
inspection and the serial number, or other identifier, for the forging machine which was inspected.
· (ii) Scheduling and recording the inspection of guards and point of operation protection devices at
frequent and regular intervals. Recording of inspections shall be in the form of a certification record which
includes the date the inspection was performed, the signature of the person who performed the inspection
and the serial number, or other identifier, of the equipment inspected.
· (iii) Training personnel for the proper inspection and maintenance of forging machinery and
equipment.
· (iv) All overhead parts shall be fastened or protected in such a manner that they will not fly off or
fall in event of failure.
· (3) Hammers and presses. (i) All hammers shall be positioned or installed in such a manner that
they remain on or are anchored to foundations sufficient to support them according to applicable
engineering standards.
· (ii) All presses shall be installed in such a manner that they remain where they are positioned or
they are anchored to foundations sufficient to support them according to applicable engineering
standards.
TABLE O-11—STRENGTH AND DIMENSIONS FOR WOOD RAM PROPS

Size of
timber,
1
inches

Minimum
Square
allowable
Maximum
Maximum
Maximum
inches in
crushing
static load
recommended weight
allowable
cross
strength parallel within short Safety of forging hammer for
length of
2
3
section
to grain, p.s.i. column range factor
timber used
timber, inches

4×4

16

5,000

80,000

10

8,000

44

6×6

36

5,000

180,000

10

18,000

66

8×8

64

5,000

320,000

10

32,000

88

10 × 10

100

5,000

500,000

10

50,000

100

12 × 12

144

5,000

720,000

10

72,000

132

1

Actual dimension.

2

Adapted from U.S. Department of Agriculture Technical Bulletin 479. Hardwoods recommended are
those whose ultimate crushing strengths in compression parallel to grain are 5,000 p.s.i. (pounds per
square inch) or greater.
3

Slenderness ratio formula for short columns is L/d = 11, where L = length of timber in inches and d
= least dimension in inches; this ratio should not exceed 11.
· (iii) Means shall be provided for disconnecting the power to the machine and for locking out or
rendering cycling controls inoperable.
· (iv) The ram shall be blocked when dies are being changed or other work is being done on the
hammer. Blocks or wedges shall be made of material the strength and construction of which should meet
or exceed the specifications and dimensions shown in Table O-11.
· (v) Tongs shall be of sufficient length to clear the body of the worker in case of kickback, and
shall not have sharp handle ends.
· (vi) Oil swabs, or scale removers, or other devices to remove scale shall be provided. These
devices shall be long enough to enable a man to reach the full length of the die without placing his hand
or arm between the dies.
· (vii) Material handling equipment shall be of adequate strength, size, and dimension to handle
diesetting operations safely.
· (viii) A scale guard of substantial construction shall be provided at the back of every hammer, so
arranged as to stop flying scale.
· (ix) A scale guard of substantial construction shall be provided at the back of every press, so
arranged as to stop flying scale.
· (b) Hammers, general—(1) Keys. Die keys and shims shall be made from a grade of material that
will not unduly crack or splinter.
· (2) Foot operated devices. All foot operated devices (i.e., treadles, pedals, bars, valves, and
switches) shall be substantially and effectively protected from unintended operation.
· (c) Presses. All manually operated valves and switches shall be clearly identified and readily
accessible.
· (d) Power-driven hammers—(1) Safety cylinder head. Every steam or airhammer shall have a
safety cylinder head to act as a cushion if the rod should break or pullout of the ram.
· (2) Shutoff valve. Steam hammers shall be provided with a quick closing emergency valve in the
admission pipeline at a convenient location. This valve shall be closed and locked in the off position while
the hammer is being adjusted, repaired, or serviced, or when the dies are being changed.
· (3) Cylinder draining. Steam hammers shall be provided with a means of cylinder draining, such
as a self-draining arrangement or a quick-acting drain cock.
· (4) Pressure pipes. Steam or air piping shall conform to the specifications of American National
Standard ANSI B31.1.0-1967, Power Piping with Addenda issued before April 28, 1971, which is
incorporated by reference as specified in §1910.6.
· (e) Gravity hammers—(1) Air-lift hammers. (i) Air-lift hammers shall have a safety cylinder head
as required in paragraph (d)(1) of this section.
· (ii) Air-lift hammers shall have an air shutoff valve as required in paragraph (d)(2) of this section.
· (iii) Air-lift hammers shall be provided with two drain cocks: one on main head cylinder, and one
on clamp cylinder.
· (iv) Air piping shall conform to the specifications of the ANSI B31.1.0-1967, Power Piping with
Addenda issued before April 28, 1971, which is incorporated by reference as specified in §1910.6.
· (2) Board drophammers. (i) A suitable enclosure shall be provided to prevent damaged or
detached boards from falling. The board enclosure shall be securely fastened to the hammer.
· (ii) All major assemblies and fittings which can loosen and fall shall be properly secured in place.

· (f) Forging presses—(1) Mechanical forging presses. When dies are being changed or
maintenance is being performed on the press, the following shall be accomplished:
· (i) The power to the press shall be locked out.
· (ii) The flywheel shall be at rest.
· (iii) The ram shall be blocked with a material the strength of which shall meet or exceed the
specifications or dimensions shown in Table O-11.
· (2) Hydraulic forging presses. When dies are being changed or maintenance is being performed
on the press, the following shall be accomplished:
· (i) The hydraulic pumps and power apparatus shall be locked out.
· (ii) The ram shall be blocked with a material the strength of which shall meet or exceed the
specifications or dimensions shown in Table O-11.
· (g) Trimming presses—(1) Hot trimming presses. The requirements of paragraph (f)(1) of this
section shall also apply to hot trimming presses.
· (2) Cold trimming presses. Cold trimming presses shall be safeguarded in accordance with
§1910.217(c).
· (h) Upsetters—(1) General requirements. All upsetters shall be installed so that they remain on
their supporting foundations.
· (2) Lockouts. Upsetters shall be provided with a means for locking out the power at its entry point
to the machine and rendering its cycling controls inoperable.
· (3) Manually operated controls. All manually operated valves and switches shall be clearly
identified and readily accessible.
· (4) Tongs. Tongs shall be of sufficient length to clear the body of the worker in case of kickback,
and shall not have sharp handle ends.
· (5) Changing dies. When dies are being changed, maintenance performed, or any work done on
the machine, the power to the upsetter shall be locked out, and the flywheel shall be at rest.
· (i) Other forging equipment—(1) Boltheading. The provisions of paragraph (h) of this section shall
apply to boltheading.
· (2) Rivet making. The provisions of paragraph (h) of this section shall apply to rivet making.
· (j) Other forge facility equipment—(1) Billet shears. A positive-type lockout device for
disconnecting the power to the shear shall be provided.
· (2) Saws. Every saw shall be provided with a guard of not less than one-eighth inch sheet metal
positioned to stop flying sparks.
· (3) Conveyors. Conveyor power transmission equipment shall be guarded in accordance with
ANSI B20.1-1957, Safety Code for Conveyors, Cableways, and Related Equipment, which is incorporated
by reference as specified in §1910.6.
· (4) Shot blast. The cleaning chamber shall have doors or guards to protect operators.
· (5) Grinding. Personal protective equipment shall be used in grinding operations, and equipment
shall be used and maintained in accordance with ANSI B7.1-1970, Safety Code for the Use, Care, and
Protection of Abrasive Wheels, which is incorporated by reference as specified in §1910.6, and with
§1910.215.
[39 FR 23502, June 27, 1974, as amended at 49 FR 5323, Feb. 10, 1984; 51 FR 34561, Sept. 29, 1986; 61 FR 9240,
Mar. 7, 1996]