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HAZARDS OF ELECTROMAGNETIC RADIATION TO ORDNANCE (HERO) - 14023_335
SAFETY PRECAUTIONS - 14023_337

Aviation Ordinanceman 2 & 3 - Aviation theories and other practices
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HERO ORDNANCE CLASSIFICATIONS The susceptibility of ordnance to RF environments is determined by a testing program sponsored by the Naval Sea Systems Command (NAVSEASYSCOM). Tests are conducted in the maximum RF environment the ammunition or ordnance systems maybe subjected to in its stockpile-to-launch sequence. This data is the basis for the three HERO classifications assigned to ordnance-HERO-safe ordnance, HERO-susceptible ordnance, and HERO-unsafe ordnance. HERO-Safe Ordnance An ordnance item is classified as HERO safe if it meets the following criteria: Percussion initiated Sufficiently shield protected so all EEDs contained by the item are immune to adverse effects (safe and/or reliable) when the item is used in its expected RF environments. General HERO requirements are observed. HERO-Susceptible Ordnance An ordnance item is classified as H E RO susceptible if proved (by tests) to contain EEDs. HERO-susceptible ordnance can be adversely affected by RF energy. The safety and/or reliability of the system is in jeopardy when the system is used in its expected RF environments. A1. A2. A3. A4. HERO-Unsafe Ordnance An ordnance item is classified as HERO unsafe if it meets the following criteria: Its internal wiring is physically exposed Tests are being conducted on the item that result in additional electrical connections to the item. EEDs that have exposed wire leads are handled or loaded The item is being assembled or disassembled. It is disassembled HERO EMISSION CONTROL (EMCON) BILL Ordnance items classified as HERO unsafe are protected from electromagnetic radiation by putting them in a completely enclosed all-metal container. NOTE: Ordnance in a wooden or plastic container or on a metal pallet is as exposed as if the container or pallet were not there. HERO-unsafe ordnance should NEVER be exposed to an RF environment. However, the requirement for assembly, disassembly, handling, loading, and unloading exposes ordnance to some degree. If exposure cannot be avoided, ordnance should be exposed only in essentially RF-free designated regions, such as below deck or in RF-shielded buildings. The commanding officer is responsible for making sure that HERO-unsafe ordnance is not handled in RF environments. Sometimes operational commitments require HERO-unsafe ordnance to be exposed to RF REVIEW NUMBER 4 ANSWERS TO QUESTIONS Q1. THROUGH Q4. The weapons staging area on the flight deck located between the island and the starboard catwalks is known as the bomb farm. A pier-side weapons movement of ammunition loaded onto an aircraft carrier is authorized in emergency situations when authorized by NAVSEASYSCOM or to conform to the ship's sailing schedule. Conventional replenishment (CONREP) and vertical replenishment (VERTREP) are used to transfer ammunition at sea. When VERTREP is being used to transfer ammunition between ships, transfer is accomplished by helicopters using slings or cargo nets. 11-32







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