E merwarn diversion order in addition to the

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Collision Repair and Refinishing: A Foundation Course for Technicians
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Chapter 9 / Exercise 1
Collision Repair and Refinishing: A Foundation Course for Technicians
Jund/Thomas
Expert Verified
(e) MERWARN Diversion Order. In addition to the origination of MERWARN NBC3 NUC messages, naval authorities may, if circumstances dictate, broadcast general diversion orders based on the fallout threat, merchant ships proceeding independently will be passed evasive routing instructions of a more general nature, using the standard naval shipping identifier MERWARN diversion order. Example: MERWARN Diversion Order English Channel closed. All shipping in North Sea remain north of 052 degrees N until 031500ZSEP1999. (3) Precedence of NBC Messages. All MERWARN NBC messages should be given the precedence FLASH (Z) to ensure the rapid handling on any military circuit between the originating authority and the MERCOMMS and/or coastal radio stations. This precedence should not be used where the rules for the use of the international safety signal (“TTT” for chemical warfare [CW] and “security” for voice circuits) apply. NOTE: Adjacent MERWARN originators are responsible for relaying information to coast earth stations/coast radio stations under their control as necessary. (4) Danger Zones. All shipping in waters out to 200 nautical miles from any coast at the outset of war must be regarded as an area of possible fallout danger from nuclear attacks on shore. (5) Plotting MEWARN NBC3 NUC Report. Plot this report in the same manner as “Fallout Plotting from NAV EDM and Observations” (paragraph 6f[2]), using the ship fallout template (see Figure G-29, page G-52). 2 February 2006 FM 3-11.3/MCRP 3-37.2A/NTTP 3-11.25/AFTTP(I) 3-2.56 G-51
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Collision Repair and Refinishing: A Foundation Course for Technicians
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Chapter 9 / Exercise 1
Collision Repair and Refinishing: A Foundation Course for Technicians
Jund/Thomas
Expert Verified
Figure G-29. Shipboard Fallout Template (Example) G-52 FM 3-11.3/MCRP 3-37.2A/NTTP 3-11.25/AFTTP(I) 3-2.56 2 February 2006
d. Time of Completion of Fallout. (1) Most contaminated particles in a radioactive cloud rise to considerable heights. Therefore, fallout may occur over a large area. It may also last for an extended period of time. A survey conducted before the fallout is complete would be inaccurate because contaminants would still be suspended in the air. For this reason (and the hazard to surveying personnel), nuclear surveys are not conducted before completion of fallout. (2) An estimate of the time of completion (T comp ) of fallout for a particular location may be determined using a mathematical equation. The time (in hours) after a burst when the fallout will be completed at any specific point is approximately 1.25 times the time of fallout arrival (in hours after burst). Add the time (in hours) required for the nuclear cloud to pass over. This is expressed by using the following formula: T comp = (1.25 x T arrival ) + (2 x cloud radius) EWS Example: For a given location, the following data has been determined: Time of detonation = H. Time of arrival = H+2 hours (time of arrival is determined by dividing the distance from GZ to the given point by the EWS). Cloud diameter = 4 km (2 x cloud radius) (cloud diameter/radius [rr] is determined from Figure G-20, page G-39, or from line item PAPAB of the NBC3 NUC report).

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