How can you prevent power press injuries?
Proper safeguards, employee training, press maintenance, and inspections are vital to the prevention of injuries. A power press can be used in more than one production system and there may be several ways to safeguard each system. For operators, the greatest danger is at the point where stock is inserted, held, or withdrawn by hand.
How dangerous is power press?
Power Press Safety. A power press can present serious hazards to its operator. A power press injury can result in the amputation of fingers, hands, or arms and cause other disabling injuries. Proper safeguards, employee training, press maintenance, and inspections are vital to the prevention of injuries.
What is a power press and how is it used?
A power press can be used in more than one production system and there may be several ways to safeguard each system. For operators, the greatest danger is at the point where stock is inserted, held, or withdrawn by hand.
What type of training should power press operators receive?
They should receive training on the type of power press they will be using, and they should be able to demonstrate the following proper procedures: How to use all press controls. Where each safety device is located on the machine and how to use it correctly.
What is a pull back device?
Pullback devices utilize a series of cables attached to the operator's hands, wrists, and/or arms. This type of device is primarily used on machines with stroking action. When the slide/ram is up between cycles, the operator is allowed access to the point of operation.
What type of machine guard physically pulls and operators hands out of the danger zone?
pullback deviceA pullback device is designed to protect the machine operator by keeping the operator's hands out of the danger zone during the hazardous portion of the machine cycle. It utilizes a series of cables attached to the operator's hands, wrists, or arms which physically withdraws them before a cycle.
What are machine safeguarding requirements?
Requirements for Safeguards Machine safeguards must meet these minimum general requirements: Prevent contact: The safeguard must prevent hands, arms or any other part of a worker's body from contacting dangerous moving parts. Be secure: Workers should not be able to easily remove or tamper with the safeguard.
What is an exception to the general rule for safeguarding to prevent hazards during servicing and maintenance of machines?
Although this is the general rule, there are exceptions when the servicing or maintenance is not hazardous for an employee, when the servicing which is conducted is minor in nature, done as an integral part of production, and the employer utilizes alternative safeguards which provide effective protection as is required ...
What is the OSHA standard for machine guarding?
General requirements for machine guards. Guards shall be affixed to the machine where possible and secured elsewhere if for any reason attachment to the machine is not possible. The guard shall be such that it does not offer an accident hazard in itself. Point of operation guarding.
What is a two hand control device?
Two-hand control devices are systems forcing the operator to keep the hands outside the dangerous zone to avoid hand injuries during hazardous movements (or functions) of machines. Two-hand control devices used at power-driven presses of the. metal processing industry in order to protect against hand injuries.
What are the three basic areas require safeguarding?
Dangerous moving parts in three basic areas require safeguarding: The point of operation: that point where work is performed on the material, such as cutting, shaping, boring, or forming of stock....Hazardous Mechanical Motions and Actionsrotating (including in-running nip points)reciprocating.transversing.
What are some basic safeguarding methods?
Methods of SafeguardingGuards – these are physical barriers that prevent contact. ... Devices – these limit or prevent access to the hazardous area. ... Automated Feeding and Ejection Mechanisms – These eliminate the operator's exposure to the point of operation while handling stock (materials).More items...
What are the two types of safeguarding methods?
Two primary methods are used to safeguard machines: guards and safeguarding devices. Guards provide physical barriers that prevent access to dangerous areas.
Which of the following are all machine safeguarding requirements except?
The following are all machine safeguarding requirements except: Must prevent workers from lubricating a machine without removing the safeguard.
What is the type of safeguarding device that senses a worker in a certain area quizlet?
There are three types of presence-sensing devices; photoelectrical, radiofrequency, and electromechanical. While they all work in slightly different ways, they all operate on the idea of the worker's presence in a certain area causing the machine to stop.
Has overall responsibility for compliance with OSHA regulations quizlet?
Prime Contractor: Has overall responsbility for compliance with OSHA regulations.
Which is a type of machine safeguarding?
Methods of Safeguarding They can be fixed, interlocked, adjustable, or self-adjusting. Devices – these limit or prevent access to the hazardous area. These can be presence-sensing devices, pullback or restraint straps, safety trip controls, two-hand controls, or gates.
What guards Cannot be moved when a machine is in operation?
Fixed guards are permanently attached to the machine or tool, don't have any moving parts, and can't be moved while the machine is in use. They're most often used to enclose the point of operation, or other hazards that the operator doesn't need to interact with, like fan blades or flywheels.
How does a two handed control help prevent worker injuries?
Two-hand controls can be used as safeguarding devices in the single stoke mode of operation on part revolution clutch presses. Similar to the two-hand trip, this device keeps the operators hands away from the point of operation during the entire machine stroke.
What is the effect of physical hazard?
Excessive energy exposure can cause pain and injury. If exposure occurs day after day, we may develop a disease and possibly a disability. Physical hazards include exposure to slips, trips, falls, electricity, noise, vibration, radiation, heat, cold and fire.
What is a safeguard in a power press?
Safeguards are designed to eliminate the possibility of the operator or other workers from placing hands or any other body part from making contact with hazardous moving parts. Operators should never remove or tamper with safeguards. A power press can be made safe but only its user can prevent machine guarding injuries.
What do press operators need to know?
Press operators must know how to use press controls, where possible pinch points or moving parts are located, and where safety devices are located. Operators should be trained to lock out machinery, lubricate it, remove stuck work, and know to whom they should report any problems. Training should also include why, when, and how too use personal protective equipment.
How often should a supervisor inspect a power press?
Supervisors should visually inspect each press at the start of a shift or whenever a new operator comes on duty. Each press must be inspected weekly to be sure that all functions are operating properly; and periodically, an in-depth inspection must be conducted.
How long does it take to train a power press operator?
A power press can be made safe but only its user can prevent machine guarding injuries. Press operators must receive a minimum of eight hours of on-the-job training under supervision before being assigned to operate a press.
Why is it important to have a power press?
Proper safeguards, employee training, press maintenance, and inspections are vital to the prevention of injuries. A power press can be used in more than one production system and there may be several ways to safeguard each system. For operators, the greatest danger is at the point where stock is inserted, held, or withdrawn by hand.
Background
Some amputations involving power presses occur when the operator places a hand into the working zone (or point of operation) of the press after the press operation is initiated. Most prevention activities involve the placement of guards to prevent operators from placing their hands into the working zone of the press.
Conclusions
Even though there is an existing OSHA standard that addresses construction and operation of mechanical power presses, injuries and amputations among press operators are still occurring with alarming frequency.
Recommendations
The recommendations presented here were compiled from generally accepted safety practices and research; they are intended to supplement existing OSHA standards. Implementation of these recommendations should be considered in any comprehensive safety program for the prevention of injuries among mechanical power press operators.
Foot-Controlled Power Presses
Foot controls should be used with point-of-operation safeguards that cannot be easily bypassed or misadjusted.
Recommended Checklists for Safe Operation of Mechanical Power Presses
The checklists presented below are provided as an adjunct to the above recommendations to aid in maintaining safe use of foot and dual palm-button controls for mechanical power presses.
Why are the operating levers on hand tripped presses interlocked?
The operating levers on hand-tripped presses having more than one operating station shall be interlocked to prevent the tripping of the press except by the "concurrent" use of all levers.
What is friction brake?
Brakes. Friction brakes provided for stopping or holding a slide movement shall be inherently self-engaging by requiring power or force from an external source to cause disengagement. Brake capacity shall be sufficient to stop the motion of the slide quickly and capable of holding the slide and its attachments at any point in its travel.
What is clutch brake control?
The clutch/brake control shall incorporate an automatic means to prevent initiation or continued activation of the Single Stroke or Continuous functions unless the press drive motor is energized and in the forward direction.
When does the clutch release?
The clutch shall release and the brake shall be applied when the external clutch engaging means is removed, deactivated, or deenergized.
What happens if pedal counterweights are provided?
If pedal counterweights are provided, the path of the travel of the weight shall be enclosed.
What is a control system in a die?
The control system shall be designed to permit an adjustment which will require concurrent pressure from both hands during the die closing portion of the stroke.
What is a two hand trip?
A two-hand trip shall have the individual operator's hand controls protected against unintentional operation and have the individual operator's hand controls arranged by design and construction and/or separation to require the use of both hands to trip the press and use a control arrangement requiring concurrent operation of the individual operator' s hand controls .
What is machine safeguarding?
Machine safeguarding refers to a wide range of devices on or near equipment that protect people from harm. Production Resources offers a complete line of ANSI and OSHA compliant machine guards and safeguarding devices, including power press clutch/brake controls, light curtains (presence sensing devices), sliding barrier devices, barrier guards, pull outs, restraints, riveter guarding devices, safety mats, safety/die blocks, and area/perimeter guarding devices.
What is the brake control on a Wintriss 2000?
The Wintriss 1000 and 2000 Clutch / Brake controls both meet or exceed all ANSI B11.1 and OSHA 1910.217 regulations, including control reliability. Press and floor console models are available with or without motor controls built to your exact specifications. Integral brake monitors to check the stopping performance and a host of other features are available including optional integration with the Wintriss SmartPAC2 press automation control system.
What is a S3000 scanner?
The S3000 safety laser scanner is a safeguarding device that meets industry OSHA, ANSI, UL, IEC, and EN safety standards. Its use is for difficult to guard category 3 applications that may cause injury but will not result in death, cause amputation, or other catastrophic injury. It is designed for indoor hazardous area and machinery protection, access protection, guided vehicle protection, robot stations, and irregular shaped areas. The safety laser scanner is an optical sensor that scans its surroundings in two dimensions using infrared laser beams. It sends out very short pulses of light and measures the time it takes to reflect back (time of flight measurement).
Why is a scanner programmable?
The programmable feature of the scanner eliminates the need to reprogram the scanner every time something changes within the field. For example, if something is regularly moved in and out of a field, then multiple fields can be programmed to accommodate the changes. A static input allows for a selector switch or PLC to be used to change the field sets as needed.
What is a LazerSafe press brake guard?
LazerSafe press brake guarding is specifically designed for use with fast stopping hydraulic press brakes where it’s necessary to hold short work pieces close to the tooling. This system is applicable to newer press brakes with “creep speed” provisions.
Why is it important to select the right safeguarding for your power press?
It’s important do a risk assessment: properly identify the hazard, how the operator and others are exposed, frequency of exposure, and the nature and probability of injury. Operator interaction with the machine, stroke/cycle initiation means, part loading/unloading procedures, stopping performance, and passersby exposure must all be considered.
What is a physical barrier guard?
Physical barrier guards should be considered as a machine safeguarding solution where frequent access and/or maximum visibility to the operation or process is not of major importance. Often a barrier guard may be combined with other safeguarding solutions, such as presence sensing devices, to create a more flexible and complete guarding solution.
How to strengthen bench press?
1 – Dumbbell Work. Dumbbells are great for teaching you how to press and also great for building stability in the shoulder and lat muscles. There are several ways you can use dumbbells to strengthen your bench press:
How to bench press while lying on the floor?
The floor press is performed by setting the hooks or supports up in a power rack so you can bench press while lying on the floor. Get under the bar with your shoulder blades together and shrugged into your traps. Tuck the elbows and unrack the weight. Lower the weight until your triceps hit the floor.
How to get lats in bench press?
This is part of the same movement that happens when you bench press. The trick to getting and keeping your lats in the movement starts long before the bar hits the chest. It begins with the set up at the beginning of the lift, before the bar leaves the rack. Once again you need to have the proper tight position .
What happens if you don't expand your body?
If you don’t have your body expanded with as much air as possible, then your chest and belly will be lower than what’s needed for a big bench. The bigger you are, the shorter the path the bar has to travel and the higher the elbows remain. Lesson: You have to stay tight to bench right!
How to get a better J hook?
The j-hooks aren’t as deep and all you have to do is drag a bench over. The second option is to take a liftoff from a training partner .
How to build max strength in bench press?
As a quick review of the max effort movement described in the Periodization Bible, Part Two article, the max effort method is used to build max strength in the bench press by teaching the body to strain with maximal training loads. This is done one time per week with one movement. You warm up using multiple sets of three to five reps in an ascending pattern until you get to a one or three rep max on the movement you're using.
Why do you lift off?
This is actually one of the reasons why a liftoff helps you lift more weight. If you’re pressing the bar in a straight line from the lower chest then there should be no way you’ll ever hit the uprights. So don’t be afraid to get under the bar more from the start.
Are there any statistics to show how common injuries are from pushing and pulling activities?
Because these actions are among the most common work activities, they are also the cause of many injuries. However, there are no comprehensive injury statistics. As well, the injuries resulting from these activities are not always recorded very specifically. Most common are overexertion injuries (e.g., back strain). Injuries due to slips and falls are also often associated with pushing and pulling. Additionally, injuries to fingers and hands can result when caught in, on, or between objects (e.g., between a cart and the wall) and to lower legs when bumped by carts. Therefore, existing statistics do not reflect the importance of pushing and pulling as work factors causing injury because the injuries fall into different categories making them difficult to analyze.
What are the force limits for horizontal pushing and pulling?
The values in Table 1 show the upper limits of forces for horizontal pushing and pulling. These limits should not be exceeded in work situations. In fact, it is better and safer if pushing and pulling tasks require lower forces, particularly, where the task requires:
Are there any "limits" for the amount of force one should exert?
Because of the complex nature of body motion during pushing and pulling, no numerical standard has yet been developed that can be directly applied in industry.
What are the most common injuries associated with pushing and pulling?
Most common are overexertion injuries (e.g., back strain). Injuries due to slips and falls are also often associated with pushing and pulling. Additionally, injuries to fingers and hands can result when caught in, on, or between objects (e.g., between a cart and the wall) and to lower legs when bumped by carts.
How much force can a worker support his body against a firm structure?
Where a worker can support his body (or feet) against a firm structure higher forces (up to 675N or about 165 lbf or 75 Kgf) can be developed.
What factors affect the amount of force that a worker can develop in a horizontal push and pull?
Many factors affect the amount of force that a worker can develop in a horizontal push and pull: body weight and strength. height of force application. direction of force application. distance of force application from the body. different positions (standing, kneeling, overhead, and seated)
Does CCOHS guarantee accuracy?
Although every effort is made to ensure the accuracy, currency and completeness of the information, CCOHS does not guarantee, warrant, represent or undertake that the information provided is correct, accurate or current. CCOHS is not liable for any loss, claim, or demand arising directly or indirectly from any use or reliance upon the information.
Background
Conclusions
- Even though there is an existing OSHA standardthat addresses construction and operation of mechanical power presses, injuries and amputations among press operators are still occurring with alarming frequency. In many cases, these injuries occur when the press is inadvertently activated while the operator's hands are in the operating zone of the press. The results of an exp…
Recommendations
- The recommendations presented here were compiled from generally accepted safety practices and research; they are intended to supplement existing OSHA standards. Implementation of these recommendations should be considered in any comprehensive safety program for the prevention of injuries among mechanical power press operators. These data from NIOSH studies demonstr…
Foot-Controlled Power Presses
- Foot controls should be used with point-of-operation safeguards that cannot be easily bypassed or misadjusted.
- Interlocking safeguards should be considered so that the foot control is inoperable when the safeguards are not functioning.
- An ergonomicallycorrect, sitting work position, if possible, is preferred over a standing positio…
- Foot controls should be used with point-of-operation safeguards that cannot be easily bypassed or misadjusted.
- Interlocking safeguards should be considered so that the foot control is inoperable when the safeguards are not functioning.
- An ergonomicallycorrect, sitting work position, if possible, is preferred over a standing position if a foot control is used.
- To reduce strain on the foot, a foot-rest should be provided near the pedal.
Recommended Checklists For Safe Operation of Mechanical Power Presses
- The checklists presented below are provided as an adjunct to the above recommendations to aid in maintaining safe use of foot and dual palm-button controls for mechanical power presses. Checklist to be used when foot controls are used: 1. Safeguards are in place which will prevent injury if the foot control is inadvertently depressed. 2. A guard or cover is over the foot switch to …