(a)
Concrete Buggies.
(1) Handles of buggies shall
not extend beyond the wheels on either side of the buggy.
(2) Handles shall be guarded or equipped with
knuckle guards.
(b)
Concrete Pumps and Placing Booms.
(1) Scope.
This subsection is applicable to truck-mounted concrete boom pumps,
trailer-mounted concrete pumps and separate concrete placing booms.
(2) Definitions.
Concrete delivery hose. A flexible delivery hose having a
coupling on each end.
Control panel. The place where the control actuating
devices for the operation of the machine are located.
Delivery system. Delivery lines, hoses, and their
components, as well as transfer valves, through which the material to be
transported is pumped.
End hose. A flexible concrete delivery hose which has
only one end coupling.
Placing boom. Manual or power driven, slewable working
device, consisting of one or more extendable or foldable parts which support
the concrete delivery system, and which direct the discharge into the desired
location.
Remote control. A control device for the machine that is
portable and may be connected to the machine by a wire umbilical cord or linked
by radio or other wireless means.
(3) General.
(A) Equipment identification and ratings.
1. The following information shall be legibly
marked on a durable identification plate on the concrete pump.
a. Manufacturer's name.
b. Year of manufacture.
c. Serial number.
d. Type or model identification.
e. Maximum working pressure in the hydraulic
system.
f. Maximum material
pressure.
g. Power rating for
electrical equipment (voltage, frequency, amperage).
2. The following information shall be legibly
marked on a durable identification plate on the placing boom.
a. Manufacturer's name.
b. Year of manufacture.
c. Serial number.
d. Type or model identification.
e. Maximum working pressure in the hydraulic
system.
f. Maximum weight per foot
of the delivery system, including concrete at 150
lbs/foot3.
(B) Set-up and operation. Concrete pumping
equipment and placing booms shall be set-up and operated in accordance with the
manufacturer's operation and safety manuals, and these Orders.
1. The manufacturer's operation manual shall
be maintained in legible condition and shall be available to the operator
during set-up and operation of the equipment.
2. The concrete placing boom shall not be
used to drag hoses or lift other loads.
3. Concrete delivery hoses shall not be used
as end hoses.
EXCEPTIONS FO R (B)3:
1. SHOTCRETE OPERATIONS.
2. WHEN THE HOSE IS SUPPORTED BY THE
WALKING/WORKING SURFACE WHILE PUMPING AND PLACING FLATWORK.
(C) Controls.
1. Controls shall have their function clearly
marked.
2. If there are several
control locations, the same operation shall only be possible from one location
at a time.
EXCEPTION FO R (C)2:
EMERGENCY STOP CONTROLS REQUIRED BY SUBSECTION (B)(3)(C)4
SHALL HAVE PRIORITY AND SHALL BE OPERABLE FROM ANY INSTALLED
LOCATION.
3. Controls shall
be safeguarded against unintentional operation.
EXCEPTION FO R (C)3: Equipment manufactured before May 3,
2006.
4. Each machine shall
be equipped with an emergency stop system.
a.
The machine shall be equipped with emergency stop devices at the control panels
and at the remote control device.
(D) Guarding. Guarding shall be provided and
maintained in accordance with the manufacturers' specifications to prevent
unintentional access to moving parts.
(E) Delivery systems.
1. Concrete pumping systems using discharge
pipes shall be provided with pipe supports designed for twice the rated load,
including concrete at 150 lbs/ft3.
2. Compressed air hoses, if used, shall be
equipped with connecting ends that shall be chained or otherwise secured to
prevent whipping in case of separation when pressurized.
(F) Operation of concrete placing booms in
proximity of overhead high-voltage lines shall be in accordance with Article 37
of the High-Voltage Electrical Safety Orders.
1. Warning signs. Concrete placing booms
shall be posted with durable warning signs in accordance with Section
2947.
EXCEPTION: Minimum clearances from overhead high-voltage
lines in accordance with manufacturers' specifications may be posted where
minimum clearance distances are greater than those prescribed by Article 37 of
the High-Voltage Electrical Safety Orders.
(4) Inspection, maintenance and repairs.
(A) A qualified attendant or operator shall
visually inspect the machine's controls and functional mechanisms for
maladjustment, damage or deterioration prior to daily use. Any condition that
affects the safe operation shall be corrected prior to use.
1. Hoses, clamps and pipes shall be inspected
by a qualified attendant or operator prior to use. Damaged or defective hoses,
clamps or pipes shall not be used.
(B) A preventative maintenance program shall
be established and implemented in accordance with the manufacturer's
specifications.
(C) Inspection,
maintenance and repairs shall be performed by a qualified person in accordance
with the manufacturer's specifications and procedures.
(D) Inspection records shall include the
following:
1. A listing of the components and
parts inspected and tested.
2. A
brief description of test methods, results, and repairs made.
3. Names and signatures of persons performing
the inspections.
(E)
Records of inspections and maintenance shall be made available to the Division
on request.
(5)
Manufacturer no longer in business.
(A) If the
manufacturer is no longer in business and manufacturer's specifications are no
longer available, required set-up, operation, inspection, and maintenance
procedures and repairs shall be specified by a qualified person experienced in
the field of concrete pumps and placing booms.
(B) Inspection, maintenance and repairs shall
be performed by a qualified person in accordance with the specifications and
procedures established under the provisions of subsection
(b)(5)(A).
(c)
Concrete Buckets.
(1) Buckets equipped with
hydraulic of pneumatic operating gates shall have devices installed to prevent
accidental dumping.
(2) Buckets
shall be designed to prevent aggregate and loose material from accumulating on
the top and sides of the bucket.
(3) Riding of concrete buckets for any
purpose shall be prohibited.
(4) No
employee shall be permitted to work under concrete buckets while buckets are
being elevated or lowered into position.
(d) General.
(1) When discharging on a slope, the wheels
of ready-mix trucks shall be blocked and the brakes set to prevent
movement.
(2) Nozzle-gun operators
shall be required to wear protective head and face equipment as prescribed in
article 3.
(e) Adjustment
of single post shores to raise formwork shall not be made after the placement
of concrete.
(f) Reshoring shall be
erected, as the original forms and shores are removed, whenever the concrete is
required to support loads in excess of its capacity.
Notes
Cal. Code Regs. Tit. 8, §
1720
1. New
section filed 2-19-75; effective thirtieth day thereafter (Register 75, No.
8).
2. Amendment filed 6-21-85; effective thirtieth day thereafter
(Register 85, No. 25).
3. Amendment of subsection (c)(4) and new
subsections (e) and (f) filed 10-22-90; operative 11-21-90 (Register 90, No.
48).
4. Amendment filed 4-3-2006; operative 5-3-2006 (Register 2006,
No. 14).
Note: Authority cited: Section
142.3, Labor
Code. Reference: Section
142.3, Labor
Code.
1. New section filed
2-19-75; effective thirtieth day thereafter (Register 75, No. 8).
2.
Amendment filed 6-21-85; effective thirtieth day thereafter (Register 85, No.
25).
3. Amendment of subsection (c)(4) and new subsections (e) and
(f) filed 10-22-90; operative 11-21-90 (Register 90, No. 48).
4.
Amendment filed 4-3-2006; operative 5-3-2006 (Register 2006, No. 14).