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DOE-STD-1090-96, DOE Standard Hoisting and Rigging Manual ...

DOE-STD-1090-96, DOE Standard Hoisting and Rigging Manual ...

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<strong>DOE</strong>-<strong>STD</strong>-I090-<strong>96</strong> (Rev-I)7.5.4 Identification of'Signalersa. All personnel acting as signalers duringcrane operations shall be clearly identified to thecrane operator byusing the following (one ormore, as required by the responsible manager):orange hardhat, orange gloves, <strong>and</strong> orange vest.This requirement may be waived by theresponsible manager when the lift is very closelycontrolled orpersonnel are required to wearspecial clothing for protection from a hazardousenvironment.b. In those cases where the crane operatorcannot see the signaler, a second person (relaysignaler) shall be stationed where he or she cansee both the signaler <strong>and</strong> the crane operator <strong>and</strong>signals can be relayed to the operator. The relaysignaler shall also be clearly identified by theitems described in the previous paragraph.c. Where voice (direct or two-way radio)communication is used, the signaler shallcommunicate directly with the operator, notthrough a third person.d. The operator shall obey signals only fromthe designated signaler. Obey a STOP si~nal nomatterwhQ gives it.7.5.5 Size of Loada. The weight ofthe load shall be determinedprior to making the lift.b. The crane <strong>and</strong> rigging equipment shall notbe loaded beyond its rated capacity, except forauthorized testing described in Section 7.3.7.5.6 Attaching the Loada. Ensure that the hoist rope is free from kinksor twists. Do not wrap the hoist rope around theload.b. Ensure the load is attached to the load-blockhookby means ofslings or other approveddevices.c. Take care to make certain that the slingclears all obstacles.7.5.7Moving the Loada. The person appointed to direct the lift shallsee that the load is well secured <strong>and</strong> properlybalanced in the sling or lifting device before it islifted more than a few inches.b. Before starting to hoist, note the followingconditions:1. Hoist rope shall not be kinked.2. Multiple-part lines shall not be twistedaround each other.3. The hook shall be positioned above thecenter ofgravity ofthe load in such a manner as tominimize swinging when the load is lifted.4. Ifthere is a slack-rope condition, itshould be determined that the rope is properlyseated on the drum <strong>and</strong> in the sheaves.5. All personnel including the qualifiedrigger shall be clear of the load.c. During hoisting, take care to ensure that:1. The load is lifted slowly until it clearsthe ground or other support to minimize swinging.2. There is no sudden acceleration ordeceleration ofthe moving load.3. The load does not contact anyobstructions. A "dry run" shall be conducted inareas where clearance is limited.d. Cranes shall not be used for side pullsexcept when specifically authorized by anappointed person who has determined that thestability ofthe crane is not endangered <strong>and</strong> thatload-bearing parts of the crane will not beoverstressed.e. Avoid carrying loads above people.f. Each time a load approaching the ratedcapacity is h<strong>and</strong>led, test the hoist brakes byraising the load a few inches <strong>and</strong> applying thebrakes. Any slippage or downward motion isunacceptable.7-15Chapter 7Overhead <strong>and</strong> Gantry Cranes

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