Brian Roberts, CSP, CIE, RRE Director Ergonomics January 16, 2014 Manual Material Handling Trends...
of 34/34
Brian Roberts, CSP, CIE, RRE Director Ergonomics January 16, 2014 Manual Material Handling Trends and Solutions Brian Roberts, CSP, CIE, RRE Director, Manufacturing and Ergonomic Services CNA Insurance
Brian Roberts, CSP, CIE, RRE Director Ergonomics January 16, 2014 Manual Material Handling Trends and Solutions Brian Roberts, CSP, CIE, RRE Director,
Text of Brian Roberts, CSP, CIE, RRE Director Ergonomics January 16, 2014 Manual Material Handling Trends...
Slide 1
Brian Roberts, CSP, CIE, RRE Director Ergonomics January 16,
2014 Manual Material Handling Trends and Solutions Brian Roberts,
CSP, CIE, RRE Director, Manufacturing and Ergonomic Services CNA
Insurance
Slide 2
The information, examples and suggestions presented in this
material have been developed from sources believed to be reliable,
but they should not be construed as legal or other professional
advice. CNA accepts no responsibility for the accuracy or
completeness of this material and recommends the consultation with
competent legal counsel and/or other professional advisors before
applying this material in any particular factual situations. This
material is for illustrative purposes and is not intended to
constitute a contract. Please remember that only the relevant
insurance policy can provide the actual terms, coverages, amounts,
conditions and exclusions for an insured. All products and services
may not be available in all states and may be subject to change
without notice. References to the services of external third
parties are provided solely for convenience and CNA disclaims any
responsibility with respect thereto. CNA is a registered trademark
of CNA Financial Corporation. Copyright 2014 CNA. All rights
reserved.
Slide 3
Manual Material Handling Solutions
Slide 4
Material on the Floor What is the number one issue from a MMH
perspective when you walk into a plant? Everything is on the
floor!
Slide 5
Material on the Floor We as safety professionals have to be
able to: See the exposure The forest for the trees syndrome
Understand how this impacts the exposure. How many times does
someone bend in a year? Communicate, articulate, and motivate our
insureds to get/keep materials off the floor.
Slide 6
Solutions for Raising Material Off the Floor Strap three to
four pallets together Simple: Requires spare pallets and strapping.
Material can then be positioned on the pallets. Another pallet can
be placed on the strapped pallets. Minimal cost: Any size company
can afford to do this. Pallets are usually on-hand Portable: Can be
moved very easily.
Slide 7
Solutions for Raising Material Off the Floor Non-adjustable
table Adjustable lift tables with and without turntables (Electric,
air, and pneumatic) (Stationary & Mobile) Spring Loaded Lifts
Flush (zero-level) Floor Lifts
Slide 8
Solutions for Raising Material Off the Floor Tilters
(Combination of lift & tilt) or just lift or tilt. Portable
Tilters Roll On Level Loader ~ Lowers to the floor so pallets can
be rolled on with a hand pallet jack
Slide 9
Solutions for Raising Material Off the Floor Stack Box Feeder
Positioner ~ for Workstations Portable Lift (Push by hand and foot
pedal activated)
Slide 10
Transporting - Materials Very high forces can be encountered
when transporting materials from one location to another when
completed manually. Forces can be measured using the force gauge
and correlated to data in the Snook Tables. Upper limits of
horizontal force: Initial: 50 pounds Sustained: < 40 pounds
Emergency stop within 3 feet: 80 pounds of force
Slide 11
Transporting - Materials Whenever possible we should use
mechanical devices to move the material. We do understand that many
of our accounts must do it manually. If so; Emphasis should be on
the design of carts to reduce forces.
Slide 12
Solutions - Transporting Materials - Mechanically Mechanical
Devices: Battery operated Tuggers for moving carts, hospital beds,
trash bins, wire carts, linen carts, food bins, paper rolls, boats,
shopping carts A tugger can be used to push just about anything
that can be manually pushed.
Slide 13
Solutions - Transporting Materials - Mechanically Propane or
Gas Powered Lift Trucks Battery Operated Pallet Jacks (walkers)
Battery Operated Pallet jack (ride-on )
Solutions - Transporting - Manually Carts ~ All types shapes
and sizes (3, 4, 6 wheel) Carts with turntables Hand Trucks ~Two
Wheelers Hand Trucks ~Four Wheel Convertible Hand Pallet
Trucks
Slide 16
Solutions - Transporting - Manually Mobile Work Positioners
Small lift table on wheels ~ Foot Pump Mobile stackers ~ for drums,
boxes, rolled material etc..
Slide 17
Design Guidelines for Manual Hand Carts Two, three, or four
wheel hand carts should not be loaded with more than 500 pounds of
material including the cart. If the load exceeds 500 pounds,
powered truck should be considered. Cart tasks performed less than
200 times a day are suitable for manual operations. For materials
regularly transported more than 100 feet, use of powered truck
should be considered
Slide 18
Design Guidelines for Manual Hand Carts Wheels & Casters:
Diameter Increasing the wheel diameter generally decreases the
force to initially move the cart. Minimum size wheel that should be
used is 6 inches. Composition A harder caster or tire decreases the
force necessary to move the cart.
Slide 19
Design Guidelines for Manual Hand Carts A wider tread increases
the wheels rolling resistance with the floor, which increases the
force needed to move the cart. A narrow wheel should not be used
outdoors; a wider pneumatic wheel should be used.
Slide 20
Design Guidelines for Manual Hand Carts Roller bearings should
be used versus straight axels to reduce force. If swivel casters
are used, the operator should always push from the swivel end.
Handles can be used vertically or horizontally ~ Vertical can
accommodate various size individuals. Handle height should range
from 36 to 44 inches.
Slide 21
Design Guidelines for Manual Hand Carts Preferred heights for
the cart shelves should be between 20 and 45 inches. Heights of
less than 14 inches and greater than 50 should be avoided if
possible. Maximum height of a cart should be 55 inches
Slide 22
Transferring - Materials Twisting of the Torso Forward Torso
Flexion Lateral Torso Flexion Reaching Behind the Torso Adduction
Abduction Overhead Reaching When transferring materials from a
conveyor to a pallet, pallet to a conveyor, workstation to
workstation, etc.. there are numerous risk factors present:
Slide 23
Transferring - Materials Transferring materials typically
include: Boxes Sacks Cases Wood Metal sheet, roll, angle etc..
Drums plastic & metal Sub assembled or assembled parts Just
about any type of product manufactured, assembled etc..
Slide 24
Solutions for Transferring Materials Roller Ball tables Air
Tables Stainless Steel Tables (Highly Polished) Flexible/Expandable
Conveyors Regular Conveyors (Powered & Non Powered)
Slide 25
Solutions for Transferring Materials Portable Conveyors
Telescoping Conveyors Slides Chutes
Slide 26
Solutions for Transferring Materials Hoisting Systems ~
including (powered & non-powered) jib, bridge, gantry,
stationary, and portable cranes, chain hoists (manual &
powered), wire rope hoists (manual & powered) Vacuum Lifts ~
for drums, sacks, crates, glass etc.. Mechanical Articulating
Manipulators ~ attachments for drums, metal, slings, magnets
etc..
