Safety stopping

Remove the packing reservoir, close the column with the top flange and connect the outlet line to a solvent container. Compress the column with the hydraulic to the appropriate compression and secure the piston from moving back by means of the safety stop. The compression varies from lObar for polymeric materials up to 80 bar for very rigid silica adsorbents. 

Stop the pump, recompress the column to the compression pressure and readjust the safety stop. 

Repeat steps 5 and 6 up to three to four times. During the last repetition there should be no further movement of the safety stop when compressed. 

Listen for shouts, altercations, gunshots, or other audible information as you observe the scene. If there is any doubt as to scene safety, stop and wait for law enforcement to clear the scene. If the scene needs assessment by specialized personnel (bomb technicians, HazMat technicians, technical rescue personnel, law enforcement, or GDL entry team), withdraw until they have finished their mission and give you the OK to enter. 

Replaces lanyards and improves worker safety, stops falls within inches and reduces fall distances ... 

The top and bottom dies are heated independently to about 120°-150°C (250°-300°F). Dies are of hard tool steel with the part appearance surface mounted on the top platen. A vertical flash design with adequate guide pins, safety stops, and ejector system is suggested. Dies must have a shear edge of about 0.002-0.003 in. to trim the part in station. 

Dies should not close against stop blocks or other restraints. The blank must be the only stop the die sees when stamping. Safety stop blocks, used to prevent empty die halves from crashing against each other, should be designed to provide a 0.020-in. distance between die halves. 

Incorrect order The failure of the bus modifies the message order (e.g. before processing a safety stop, speed must be safely reduced. Confusing these messages, the machine will continue to operate rather than stop). The receiver will recognize all incorrect sequence as a result of the rigorous sequential expected of the consecutive number. 

Safety stops are another feature of dock levelers, to keep the ramp from free-falling in case a trailer separates unexpectedly from the dock. Lift trucks crossing an unsupported platform can fall to the bottom of the leveler and possibly off the dock. Safety stops limit the free fall of the platform. 

The cabinet system includes full radiation safety in the form of dual, forced breaking door interlocks so that there can be no risk of exposure outside the cabinet. Equally the system is equipped with emergency stops and red lights indicating when X-rays are on, in accordance with the international regulations. 

Since the principal hazard of contamination of acrolein is base-catalyzed polymerization, a "buffer" solution to shortstop such a polymerization is often employed for emergency addition to a reacting tank. A typical composition of this solution is 78% acetic acid, 15% water, and 7% hydroquinone. The acetic acid is the primary active ingredient. Water is added to depress the freezing point and to increase the solubiUty of hydroquinone. Hydroquinone (HQ) prevents free-radical polymerization. Such polymerization is not expected to be a safety hazard, but there is no reason to exclude HQ from the formulation. Sodium acetate may be included as well to stop polymerization by very strong acids. There is, however, a temperature rise when it is added to acrolein due to catalysis of the acetic acid-acrolein addition reaction. 

Thiol spills are handled ia the same manner that all chemical spills are handled, with the added requirement that the odor be eliminated as rapidly as possible. In general, the leak should be stopped, the spill should be contained, and then the odor should be reduced. The odor can be reduced by sprayiag the spill area with sodium hypochlorite (3% solution), calcium hypochlorite solution (3%), or hydrogen peroxide (3—10% solution). The use of higher concentrations of oxidant gives strongly exothermic reactions, which iacrease the amount of thiol ia the vapor, as well as pose a safety ha2ard. The apphcation of an adsorbent prior to addition of the oxidant can be quite helpful and add to the ease of cleanup. 

Requirements. Automotive brakes must satisfy a certain set of consumer expectations, which iacludes safety, comfort, durabiUty, and reasonable cost. In technical terms, these expectations are translated iato a set of specific requirements such as high and stable friction, no or minimal vibration and noise, and low wear rates for the friction material and rotor mating surfaces, all of which have to be achieved simultaneously at a reasonable cost. Particularly, the performance has to be stable under varying appHcation conditions over extremes ia temperature, humidity, speed, and deceleration rate for occasional or many consecutive stops. The requirements for use ia machines are less stringent. 

A stay put type stop push button may also be mounted near the motor for maintenance safety... 

E-beam is a relatively cold process and so is more suitable for heat-sensitive substrates. UV lamps emit about one third UV light and the rest is visible and IR. Consequently substrates can get very hot, even causing fires if they become stuck beneath the lamp. Safety shutters which close if the line stops are installed on many UV bulbs. 

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