Personnel shall not ride the hook or load at any time. Conventional methods of reaching a worksite shall be utilized unless they would be more hazardous or not possible.
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6.4.1 Man-Rated Baskets and personnel platforms used with cranes shall be designed, certified and load tested, and operated in accordance with 29 CFR 1926.550, Cranes and Derricks, and ASME B30.23, Personnel Lifting Systems for all lifts of personnel.
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Flight Hardware Used to Lift Critical Loads and Clampbands. |
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6.5.1. Flight Hardware Used to Lift Critical Loads Design Requirements. Lift fittings such as lugs and plates permanently attached to flight hardware shall be designed so that the loss of one fitting and/or structure will not result in the dropping of the load. If this requirement cannot be met, the minimum ultimate factor of safety shall be 1.5.
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6.5.2. Flight and GSE Clampbands. Flight and GSE clampbands shall be designed with a minimum ultimate safety factor of 1.5 x limit load. Limit load shall include the effects of all expected lateral, compressive and tensile loads experienced by clampbands during ground and flight environments.
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6.5.3. Flight Hardware Used to Lift Critical Loads and Clampband Initial Test Requirements. At a minimum, the following tests shall be performed on permanently attached flight hardware lift fittings and clampbands prior to their first operational use at the Ranges:
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6.5.3.1. Clampbands and lift fittings shall be load tested to 100 percent of limit load as an integral part of the lifting assembly during structural load testing. All components shall be tested together as a system, if practical.
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6.5.3.2. After the load test, volumetric and surface NDE testing shall be performed on all clampbands, lift fitting SFP components and SFP welds.
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6.5.4. Flight Hardware Used to Lift Critical Loads and Clampband Data Requirements. Data requirements for Flight Hardware Used to Lift Critical Loads and Clampbands shall be submitted in accordance with Volume 3, Attachment 1, A1.2.5.6.2.
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ACOUSTIC HAZARDS |
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Acoustic Design Standards |
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7.1.1. Equipment and systems shall be procured, designed and operated to ensure that personnel are not exposed to hazardous continuous and impulsive noise levels that exceed the limits established by NPR 1800.1, Occupational Health Program Procedures, latest revision, Hearing Conservation Section. In all cases, noise shall be at the lowest practical levels. NASA’s allowable noise exposure limit is the equivalent to an 85 dBA, 8-hour TWA exposure using a 3 dB exchange rate as calculated by the following formula where L stands for exposure level and T stands for duration: T(min) = 480/2(L-85)/3 . Exposures exceeding those calculated by the preceding formula shall be controlled, reduced, or eliminated through a hierarchical combination of engineering controls, administrative controls, and hearing protection devices. Noise dose shall include all impact/impulse noise measured up to and including 140 dB peak. The action level is 82 dBA, 8 hour TWA.
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7.1.2. “Buy Quiet and Quiet by Design” provisions are integral to the site selection and design of new or modified facilities and equipment.
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7.1.3. Workspace noise shall be reduced to levels that permit necessary direct person-to-person and telephone communication. Areas requiring occasional telephone use or occasional direct talk at distances up to 1.5 m (5 ft) shall not exceed 75 dBA. Areas requiring frequent telephone use or direct talk at distances up to 1.5 m (f ft) shall not exceed 65 dBA.
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7.1.4. Payload project shall coordinate with local authorities to ensure that potential acoustic hazards are evaluated by qualified personnel.
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7.1.5. Caution alarms and audio warning signals shall be distinguishable by their intensity, duration and source, and be compatible with the acoustical environment of the intended receiver as well as other personnel in the signal areas.
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