Crane Safety
description
Transcript of Crane Safety
1293 Airport RoadBeaver, WV 25813
Phone: (304) 253-8674Fax: (304) 253-7758
E-mail: [email protected]
Crane Safety
Vincent J. Giblin, General President
1926.550 Cranes and Derricks
b. Crawler, Locomotive and Truck Cranes
c. Hammerhead Tower Cranes
d. Overhead and Gantry
e. Derricks
f. Floating Cranes
g. Suspended Personnel Platforms
1926.551 HELICOPTORS
1926.552 HOISTS AND ELEVATORS
1926.553 BASE-MOUNTED AND DRUM HOISTS
1926.554 OVERHEAD HOISTS
1926.555 CONVEYORS
1926.556 AERIAL LIFTS
Must comply with the manufacturer’s specifications or have engineers determination
No attachments exceeding limitations
All ratings, capacities, warnings and instructions posted on equipment
All information visible to operator
ANSI hand signals posted on site
Competent person for inspections
Documented through annual inspections
Wire rope inspection criteria
Guarding of moving parts
Swing radius barricaded
Monitor exhaust in enclosed spaces
Windows - safety glass with no distortion
Safe access to cab
Fire extinguisher - minimum 5BC
Powerline clearance 10 ft. minimum
Manufacturers approval for modifications
Employees clear of suspended loads
Must comply with ANSI B30.5 (except 5-2.1.5)
Must comply with PCSA #2 (Hydraulic)
Powerline contact
Swing radius crushing
Structural failure
Rigging failure
Tipover
Improper setup Inadequate outrigger cribbing
Unstable ground (Utilities, uncompacted soil, etc.)
Unlevel crane (Reduction in capacities upto 50%)
Inspection failure - damaged components
Overload Mechanical failure
Hydraulic failure
Impact loading
Side loading
Wind
Minimum clearance 10 ft. up 50kV plus 0.4 inches for each 1kV over 50 kV.
In transit with no load4 ft. - upto 50kV
10 ft - 50kv to 345kV
16 ft - upto 750kV
When the crane moves to within the booms length a designated signal person is
required !
Prohibited Zone Upto 50 kV 10 ft.
50 to 200 kV 15 ft.
200 to 350 kV 20 ft.
350 to 500 kV 25 ft.
500 to 750 kV 35 ft.
750 to 1000 kV 45 ft.
Running Rope (Removal)Running Rope (Removal) 6 broken wires (random) in 1 lay6 broken wires (random) in 1 lay 3 broken wires 1 strand 1 lay3 broken wires 1 strand 1 lay Wear equal to 1/3 original diameter of Wear equal to 1/3 original diameter of
outside wiresoutside wires Kinking, crushing, bird caging, Kinking, crushing, bird caging,
corrosion, etc. corrosion, etc. Heat damage (any source)Heat damage (any source)
Reduction in rope diameter Reduction in rope diameter (removal)(removal)
1/64 for rope upto 5/161/64 for rope upto 5/16 1/32 for rope upto 1/21/32 for rope upto 1/2 3/64 for rope upto 3/43/64 for rope upto 3/4 1/16 for rope upto 7/8 to 1 1/81/16 for rope upto 7/8 to 1 1/8 3/32 for rope upto 1 1/4 to 1 1/23/32 for rope upto 1 1/4 to 1 1/2
Standing RopeStanding Rope More than 2 broken wires in one lay More than 2 broken wires in one lay
(beyond end connections)(beyond end connections) More than 1 at the end connectionMore than 1 at the end connection
Crane within 1% of level
Crane capacity reduced by 50%
Live boom machines prohibited
Boom angle indicator required
Anti two block device required
Controlled load lowering required (Free fall is prohibited)
Trial lift required
Loaded to anticipated weight
From ground to each anticipated location
Repeated after each move
Proof test required At each jobsite, test platform to 125% of rated capacity -ANSI 200%
Hold suspended for 5 minutes
Pre-lift meeting required
Operator, signalperson, personnel to be lifted and supervision
Winds shall not exceed 15 mph (ANSI)
Taglines shall be used
Operator must remain at controls at all times, when platform is occupied
1000
500
lbs.
.
500
lbs.
.
1000 lbs..
1000300 300
1000
450 450
718 lbs..718 l
bs..
1000
600 600
575 lbs..575
lbs.
.
Shackle use• Use only the proper pin, never replace with
a bolt.• Never use a screw pin shackle if the
pin can roll under load.
One lay
Wire rope
Mechanical splice
END•This publication was made possible by grant numbers 5 U45 ES06182-13 AND 5 U45 ES09763-13 from the National Institute of Environmental Health Sciences (NIEHS), NIH. Its contents are solely the responsibility of the authors and do not necessarily represent the official views of the NIEHS, NIH.