1.
Ensure 8 minutes have elapsed since arming the receiver.2.
Recheck code setting. Rotate area code switch back and forth through all positions five times. Reset area code.3.
Attempt to fire again.4.
If charge still fails to fire, set the code to 000000, attempt to fire.5.
If FIRE signal lamp lights, reset to the proper code and move closer to the receiver or relocate, if safely possible.6.
Attempt to fire again from new position.7.
If above procedure still fails to fire charge, secure another transmitter, if possible.8.
If another transmitter cannot be secured, or if it fails as well, reset transmitter to 000000.WARNING
Wait 30 minutes before approaching a misfired charge.
1.
While waiting, check out another receiver.2.
Approach receiver, cut lead wires from binding posts one at a time without disturbing receiver, caps, or connections.3.
Strip 1" of insulation from cut lead wires and shunt.4.
Remove caps from explosive and sandbag them.Check continuity of cap leads, and look for any damage.
5.
Use new receiver and repeat procedural steps.6.
If another receiver is not available, retrieve and hold receiver steady, move lever to SAFE position.7.
Ensure battery cap is tightened.8.
Ensure antenna is properly connected and is NOT being grounded.9.
Ensure firing circuit has been properly connected.10.
If problem is related to the above, fix it.11.
If problem is not related to above, set up shot using firing wire and blasting machine (you may want to consider leaving the M122 components on the shot - it would be worth the case.)MK 32 X-RAY
TM 60A-2-1-42, DTD 14 JUL 89 WARNINGS AND CAUTIONS
Safety Precautions
Film badges will be worn by all personnel present during x-ray operations.
Safety is one of the most important considerations when using x-ray equipment. Unnecessary exposure to
radiation, no matter how small, is too much.
All personnel will stay at least 15' from the apparatus (or at the fullest extension of the remote control cable) when it is in operation.
Be aware that the x-ray apparatus incorporates printed circuits, capacitors, and other electronic components which generate high voltage and x-rays. Misuse or
carelessness during operation could cause death or injury.
Warnings
When handling and processing film, keep developer pod chemicals away from the eyes and mouth and off the skin. Immediately wipe off any chemicals that get on the skin and wash the affected area with plenty of water.
Remove all electrical power to the x-ray apparatus before removing the x-ray tube.
Cautions
When operating the x-ray apparatus under normal operating conditions, wait 4 minutes after each series of 99 pulses.
Before operating the x-ray in the AC mode, ensure that the voltage selector switch inside the battery
compartment is set to the appropriate voltage setting (before connecting the AC power cable to electrical power source).
Protect film packets from direct sunlight.
Do NOT press or squeeze the developer chemical pods in 10x12 film packets.
When checking a battery in the battery charger, do not press the battery test button for more than 2 seconds.
This will result in battery discharge.
Do not charge a battery for more than 12 hours in the
x-Wear surgical gloves when handling an x-ray tube.
MK 32 X-RAY
TM 60A-2-1-42, DTD 14 JUL 89 GENERAL PROCEDURES 1. Ensure all necessary equipment is available.
2. Conduct survey of IED location and note size, shape, placement, and density of IED.
3. Determine the following:
a. Placement of the film in relation to the IED, and film packet preparation method.
b. Placement of the x-ray apparatus and its mode of operation.
c. Placement of shielding if scatter is likely to occur.
d. Number of exposure pulses.
4. Return to safe area and prepare equipment.
5. Return to IED location and place cassette or film packet behind and as close as possible to the IED and position shielding material.
6. Position x-ray and connect to external power source, if necessary.
7. Actuate x-ray apparatus.
8. Move at least 15' away from the x-ray.
9. After x-ray has functioned, return turn off x-ray and move cassettes and other equipment to the safe area.
10.Process film and interpret radiograph.
TM 60A-2-1-42, DTD 14 JUL 89 X-RAY HINTS
Shielding: Construction materials, such as plasterboard, wood, and concrete, can all cause scatter. Polyvinyl-lead shielding should be placed near the film and target to absorb scatter and protect the film.
(Source to Film Distance SFD): When x-raying a high density object, such as a pipe bomb or projectile fuze, a standard SFD of 24" has been established as a baseline.
Clarity: If a print has poor definition or appears fuzzy, the film was too far away from the IED, or the x-ray is too close to the IED. Decrease the film-to-IED distance, or move the x-ray farther away form the IED. If a print has poor definition and the image appears enlarged, the film was too far away from the IED. Decrease the film-to-IED distance.
Exposure: Taking several x-rays of a target object initially and varying the exposure may increase the probability of obtaining a readable radiograph. Exposure may vary when x-raying items which appear alike. This depends entirely upon the density and composition of the materials of which they are made. Two galvanized pipes of the same diameter and thickness may require different exposures. One manufacturer may use slightly different materials in the pipe than another manufacturer. If an exposure estimation is based on x-raying an object when an intensifying screen is used with the film, exposure without the screen must be increased. The lowest possible exposure with the x-ray is 1 pulse of radiation.
The methods of reducing this exposure are to increase the SFD, to expose the film without an intensifying screen, or to use a radiographic filter. A polyvinyl-lead sheet can be placed over the forward end of the x-ray when exposure of less than 1 pulse is desired.
Exposure Correction: If the print is too light, it is over-exposed. Increase the number of pulses, or reduce the SFD. If the print is too dark, it is under-exposed. Reduce the number of pulses or increase the SFD.
MK 32 X-RAY
TM 60A-2-1-42, DTD 14 JUL 89 X-RAY EXPOSURE EXAMPLES P U L S E S
Item SFD TPX Film TLX Film 3000 Film W/S W/O W/S W/O W/S W/O
18" 99 25 10 10 10 10
Pipe 24" 99 25 18 18 18 18
Bomb 36" 150 175 41 41 41 41 48" 250 175 99 72 72 72 72" 600 450 198 198 162 162
18" 6 6 3* 3 2* 2
W/S - with polyvinyl-lead shielding.
W/O - without polyvinyl-lead shielding.
·- Test exposures showed that shielding did not significantly affect the quality of radiograph.
GENERAL REPORTING PROCEDURES