To view Launch Operations criteria, please see AFSPCMAN 91-710.
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Solid Rocket Motors And Rocket Motor Segments Operations General Requirements
In addition to the requirements of Chapter 3 and Chapter 13 of this volume, the payload project shall comply with the following requirements for operations involving solid rocket motors and rocket motor segments.
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Solid Rocket Motor and Rocket Motor Segment Transportation |
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18.2.1. Solid rocket motor segments/motors transported on trailers or railroad cars shall be properly restrained to the trailer or railroad car support structures to minimize possibility of loss of load in an accident scenario.
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18.2.2. For solid rocket motor/segment transporting trailers or railroad cars that use internal combustion engine powered generators for the environmental control units, gasoline or liquid propane gas powered engines shall not be used. If internal combustion engine generator equipped trailers or rail- road cars loaded with solid rocket motors/segments are brought inside processing facilities, care shall be taken to minimize the quantity of fuel in the generator tanks. The fuel tanks shall be reinforced and equipped with a protective shield to minimize possibility of tank rupture and fuel ignition during transport. An insulation barrier shall be provided between the environmental control unit and the solid rocket motor or motor segment to protect the motor from heat or possible fuel fire.
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Diesel powered generators are preferred due to much lower flammability of the diesel fuel.
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18.2.3. If forced air heaters are used for environmental control on covered railroad cars or trailers transporting solid rocket motors/segments, liquid propane gas heaters or gasoline heaters shall not be used. The effects of heater failures on the trailer/railroad car shall be analyzed and reported in an analysis as required by Volume 3, 18.3.
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18.2.4. Canvas covers for solid rocket motor/segment transporting trailers or railroad cars shall not be used. If their use cannot be avoided, the rubberized canvas material shall be subjected to triboelectric testing and meet the test requirements for plastic materials used in solid rocket motor/segment processing. An operational hazard analysis shall be performed to demonstrate that under the worst case conditions (for example, broken or loose canvas tie downs and canvas flapping and rubbing on the segment or motor case), not enough static can be accumulated to cause a catastrophic event, such as propellant ignition).
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18.2.5. Solid rocket motor/segment transport trailers or railroad cars containing solid rocket motors/ segments shall be secured to prevent inadvertent motion when parked; in other words, brakes set and wheels chocked.
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18.2.6. Locomotives and tractors that transport solid rocket motor/segment cars and trailers shall be removed from processing facilities as soon as possible.
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18.2.7. If air pallets are used for transport of solid rocket motors/segments inside processing facilities, the structure of the air pallet shall be rigid enough to minimize elastic deformation of the pallet under load and, thus, minimize stresses transferred to the solid rocket motor/segment.
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Due to the strict requirements for floor surfaces required for such air pallet operation and the fact that such surfaces are easily damaged, extensive use of air pallets for solid rocket motor/segment transport is not recommended.
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