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

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)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>can relay the signals 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 siena1 nomaYer who gives it.9.5.6Size of LoadThe crane shall not be loaded beyond its ratedcapacity, except for authorized testing describedin Section 9.3.9.5.7 Attaching the Loada. Ensure that the hoist rope is free from kinksor twists. Do not wrap the hoist rope around theload.b. Ensure that the load is attached to theload-block hook by means of slings or otherapproved devices.c. Take care to make certain that the slingclears all obstacles.9.5.8Moving the Loada. The appointed person directing the lift shallmake certain that the load is well secured <strong>and</strong>properly balanced in the sling or lifting devicebefore it is lifted 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. Following any 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 ofthe load.c. During hoisting, take care to ensure that:1. There is no sudden acceleration ordeceleration of the moving load.2. Load does not contact anyobstructions. A "dry run" shall be conducted inareas where clearance is limited.d. Cranes sball not be used for side pulls,except when specifically authorized by adesignated person who has determined that thestability ofthe crane is not endangered <strong>and</strong> thatvarious parts ofthe crane will not be overstressed.e. Avoid carrying loads over people.f. Test the brakes each time a load approachingthe rated capacity is h<strong>and</strong>led byraising the load afew inches <strong>and</strong> applying the brakes.g. Do not lower the load below the point whereless than two full wraps ofrope remain on thehoist drum.h. Do not leave your position at the controlswhile the load is suspended, unless required to doso by an approved emergency procedure.i. Work on suspended loads is prohibitedunder normal conditions. When the responsiblemanager decides that it is necessary to work on asuspended load, guidelines for ensuring safety ofthe work shall be established through consultationwith the appropriate safety organization.Suspended loads that must be worked on shall besecured against unwanted movement.j. Tag lines should be used as required toguide, snub, or otherwise control the load.9-23Chapter 9Mobile Cranes

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