Lifts scissor

Objects falling off building roofs, scaffolding, aerial lifts, scissors lifts, cranes, and forklifts can strike employees working nearby. The objects could be tools, brick, pipe, lumber, and other items. Gravity will cause the object to travel with speed and force. Broken bones and puncture injuries can occur. 

Scissor lifts are also commonly used with school employees. Scissor lifts are much different than aerial lifts. Scissor lifts keep the basket with guardrail and the frame of the machine over the center of gravity. The catapult effect is not present, and the guardrail itself meets Occupational Safety and Health Administration (OSHA) requiranents. Fall protection may also be used if the manufacturer allows for it. Scissor lifts may not be designed to withstand the force of arresting a fall. 

Some other common misuses of ladders are sources for injury as well. Leaning a stepladder against a wall or pole in the same manner as a single or extension ladder is an OSHA violation for good reason. The ladder can easily slide down the resting surface, allowing the worker to fall. Ladders should never be tied together in any manner to obtain additional reach. Another common safety violation exists when ladders are used on top of an aerial lift, scissor lift, truck bed, or other elevated surface or device. It is much more efficient to properly plan and select the correct size ladder for the project. 

Procedure For Skin Preparations. A male hairless mouse, 8-12 weeks of age, was sacrificed by cervical cleavage of the spinal cord. A square section of the abdominal skin, 3 cm in each dimension, was excised from the animal with a surgical scissor. After the incision was made, the skin was lifted and the adhering fat and other visceral debris were removed carefully from the under surface. After the skin was mounted between half cells and clamped, excess skin was trimmed. 

Lift the sternum with notched forceps and with large scissors cut the skin at the xiphoid process. 

Using small pointed scissors, cut the bone lengthways on either side of the cranium and then gently lift away the top of the skull taking care to cut any connective tissue to prevent tearing the brain tissue Wash the brain frequently with ice-cold aCSF during this dissection. 

The uterus with embryos is then lifted clear of the abdominal cavity. It can be held with forceps midway along one horn at a site between two embryos and needs to be severed with scissors at the tip of that horn (near the ovary), then where it com-mnnicates with the cervix (without separating the two horns), and finally at the tip of the second hom. As this is being done, the utems can also be trimmed free of mesentery and fat. 

Lift the skin away from the body wall with a pair of fine, blunt forceps. Make a 1-cm transverse cut—level with the top of the hindlimbs (Fig. lA)—with a pair of fine dissecting scissors. To reduce bleeding, stretch the incision to about 1.5 cm with the outer edges of the opened scissors. 

Use dull or small toothed forceps to lift the exposed abdominal muscles away from body, and then with care use scissors to make a small midline, longitudinal opening in the muscle wall. Use an index finger or blunt instrument to ensure that the abdominal organs are not adhered to the muscle wall before extending the incision rostrally and caudaUy about the same extent as the overlying skin layer was opened. 

Lift the skin and fur over the xiphoid process and cut laterally with scissors several centimeters in both directions. 

Cut around the perimeter of the area opaca with Vannas scissors, lift out the embryo with a prewetted spatula, and place into fix (usually 4% w/v paraformaldehyde in PBS, but this varies with application). 

Cut around the outside of the frame with spring scissors, and lift the frame gently using forceps. The embryo will be stretched out within the frame and remain so throughout processing (see Note 2). 

Cut and lift the embryo out using spring scissors and forceps or a spatula, transfer to Ringer s solution, and wash off excess yolk before further processing. 

When servicing a scissor lift, the table should be retained in the elevated position by chocking the moving wheels in the base. Do not, repeat not, attempt to chock the table since this can tilt upwards and allow the scissor mechanism to close. 

For fall protection you can only use a body belt as a positioning device. For aerial lifts where fall restraint is required, a body belt, meeting the requirements of 1926.502(e), is acceptable. When using scissors lifts that go straight up and down and do not bounce, a guardrail is acceptable (no body belt needed). 

Scissors lifts are common equipment on jobsites. They are used to safely lift workers, tools, and materials to various heights. They are also considered to be mobile scaffolding. 

There has been some confusion as to whether scissors lifts are considered to be aerials lifts. In 1998 OSHA acknowledged in a Letter of Interpretation that there is confusion regarding scissors lifts and the appropriate standards governing such equipment. 

The mix-up stemmed from the way OSHA s directive (CPL 2-1.23— Inspection Procedures for Enforcing Subpart L, Scaffolds Used in Construction) is worded. That directive stated that scissors lifts are addressed by 29 CFR 1926.453— Aerial lifts, and not by 1926.452(w)—Mobile scaffolds. 

Employees using scissors lifts need to be qualified to operate the equipment. 

Employees on a scissors lift must be protected by a guardrail system capable of withstanding, without failure, a force applied in any downward or horizontal direction at any point along its top edge of at least 200 pounds. Scissors lifts are usually manufactured with guardrail systems. If the guardrail system meets the minimum 200 pound toprail capacity, then employees don t need to wear personal fall arrest equipment. 

Employees do not have to tie-off on scissors lifts equipped with guardrails. They are required to tie-off when in the scissor lift basket if there is the chance they could be bounced out of the basket, or to keep them from climbing out of the basket. 

The scaffolding regulation has its own training requirements (1926.454). All of the requirements for scaffolds also pertain to scissors lifts. 

OSHA has stated that it may refer to industry consensus standards such as ANSI A92.3, Manually Propelled Elevating Aerial Platforms and ANSI A92.6, Self-Propelled Elevating Work Platforms to enforce abatement of serious safety hazards involving scissor lifts. 

Spend time on those types of scissors lifts that you use. Go over fall the protection requirements. If yom employees are going to need fall protection, then go over the types of fall protection they will be using. 

OSHA Letter of Interpretation, 05/22/1998—Seatbelts for forklifts fall protection for scissors lifts. 

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