Electrical equivalent of cargo handling equipment

and 30 Mhz. The careful use of frequency can reduce the coupling of RFR voltages induced in crane structures and rigging. A better approach, however, is the use of RFR high voltage insulator links, which provide protection for personnel against RFR burns. (Refer to Link RFR High Voltage Insulator for Ship Cranes, MIL-L-24410 (SHIPS)). Two separate bands of fiberglass filament wound on two zinc-coated steel saddles provide the required high electrical resistance, low capacitance, high tensile strength, ruggedness and fail-safe features of the insulator links. While the inner band normally carries the full working load, the outer band can carry the full working load if the inner band breaks. When proper precautions are taken, personnel handling rigging will not be harmed as long as nearby electronic transmitting equipment is operated at an output of 250 watts or less, average (at any frequency). H OW E V E R , P E R S O N N E L S H O U L D B E CONSTANTLY ALERT TO THE FACT THAT EVEN UNDER THE ABOVE OPERATIONAL L I M I T S , E L E C T RO N I C T R A N S M I T T I N G E Q U I P M E N T C A N C AU S E H A Z A R D O U S VOLTAGES TO BE INDUCED IN THE STAND- ING RIGGING AND OTHER PORTIONS OF A S H I P ’ S S T RU C T U R E , PA RT I C U L A R LY STRUCTURES AND OBJECTS (i.e., AIRPLANES AND HELICOPTERS) THAT PROTRUDE FROM THE SHIP IN THE SAME PLANE AS THE RADIATING SOURCE. The RFR voltage induced in a ship’s structures, rigging, or other objects will cause burns to personnel when they contact conductive objects. The burn hazard problem, its causes, and remedial techniques are discussed in chapter 3 (“RFR Burns”) of Electromagnetic Radiation Hazards (U) (Hazards to Personnel, Fuel and Other Flammable M a t e r i a l ) ( U ) , N A V S E A O P 3 5 6 5 / N A V A I R 16-1-529/ NAVELEX 0967-LP-624- 6010/Volume I. Q1. What do the letters RFR stand for when associated with radiation safety? Q2. What are the three categories of electromagnetic radiation hazards? Q3. What are the three classifications of ordnance susceptible to RFR? Q4. What NAVSEA publication specifies safe distances from radiation sources for fueling? Q5. I f y o u c o n fi r m t h a t s o m e o n e h a s b e e n overexposed to RFR, what instruction must you use to properly report the incident? Q6. According to the Naval Ships Engineering Center, what is the minimum RFR voltage in an open circuit that qualifies as hazardous? 3-8 Figure 3-3.—Electrical equivalent of cargo handling equipment.