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123 Cards in this Set
- Front
- Back
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Particularly in the HRM and LRM May be susceptible to EMI from ships and land based RF transmitters and crew. Interference can cause what? |
False positives and/or erratic behavior |
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LRM May break at about? |
110 lbs of tension |
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The last detector must have |
An end cap to prevent mech and water damage |
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Where does the serial number end go? |
Towards the top end of the string ( towards the module) |
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Don’t use with external power supply without power pack + why |
This will cause incorrect dose rate values and ID results |
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The AN/PDX-2 kit is for what |
Locate radiological sources and provide field expedient collection and ID of spectra for REACHBACK AND ANALYSIS |
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In gamma fields higher then 12mR/hr hrm will? |
Display “9” in the g window and maximize the duty cycle of the alarm. Update will do nothing |
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The HRM can be carried under water how deep? |
66ft (20.12m) |
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HRM weight with battery |
13 oz |
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Integration time of HRM aka response time |
Less than 1 second |
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HRM battery time? |
1 month continuous |
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HRM operation temp |
5 to 122 degrees Fahrenheit |
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HRM storage temp |
-10 to 122 degrees Fahrenheit |
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HRM alarm type |
Two 7 segment led displays Duty cycle based audio tone Duty cycle based vibrator Real time led blue for neutrons |
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What type of detector is the HRM gamma ray |
Cesium iodide scintilltor |
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HRM gamma detector size |
.5 inches x 1.5 inches |
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HRM detector sensitivity |
Typically 2.2 counts per second per micro Rem per hr |
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HRM Neutron detector type? |
Helium-3. 8.3 atmospheres absolute |
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HRM neutron detector size |
.75 inches x 4.8 inches |
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HRM neutron detector sensitivity |
10.5 cps/nv |
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After low temp storage (-10 degrees) devices should be warmed at room temp for? And why? |
15 minutes prior to turning on because May have unreadable displays and may false alarm |
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HRM has what switch |
3 position rotary switch |
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For gamma detection When you hit update on the HRM it gathers the last? |
6 seconds of data Neutron detection doesn’t require a background |
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For gamma detection When you hit update on the HRM it gathers the last? |
6 seconds of data Neutron detection doesn’t require a background |
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When do you need to update the HRM |
When a U is displayed- alarm levels are too low When HRM alarms moving from high background to low background When HRM is maxed at 9 |
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When is a U displayed on the HRM |
Current radiation level is less than 25% of stored background |
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What when an H on the HRM? |
Help failure during detection |
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HRM display is rotating counterclockwise? (Hula hoop) |
HRM is measuring radiation background during startup |
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How often does the HRM flash for ok operation |
Every 20 seconds |
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HRM flashing L every 20 seconds |
Low battery voltage |
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HRM neutron displays a 1 is? |
6-12 cps |
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HRM neutron detector displays a 9 |
>138 cps |
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Blue led on HRM will flash on average? |
Once every minute or 2 can happen several times per minute |
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When the HRM is powered up what segment lights up? |
Middle segment on the gamma detector it indicates a self test |
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If HRM fails self test? |
Middle line will stay solid check battery and replace if necessary |
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How fast should you sweep with the HRM? |
Two feet per second or slower |
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For most accurate results get within - with HRM |
Two feet of every object in the search area |
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Keep HRM within _ of the surface of item |
2-3 inches |
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HRM has been optimized for |
Interdiction and search |
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Shitty batteries can cause HRM issues why? |
Higher internal resistance in some batteries |
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PDX-2 kits need recalibration every? |
24 months |
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What is the LRM |
Self contained gamma ray and thermal neutron radiation detector |
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LRM has how many detectors |
18 gamma and 9 neutron |
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Rearranging the detectors will degrade the LRM capes in what mode |
Linear |
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LRM weight? |
11.70 lbs |
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LRM cable length? |
80ft |
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LRM batt life? |
24 hours without backlight 12 with backlight |
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LRM op temp? |
5-122 degrees Fahrenheit |
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LRM storage temp |
-10-122 degrees Fahrenheit |
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How’s the LRM with water? |
Water resistant |
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LRM carry bag dimensions? |
7 in x 19 inches |
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LRM gamma integration time? |
.5 seconds |
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LRM neutron response time? |
.5 seconds |
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Left side of LRM has what? |
Shows each gamma module |
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Right side of LRM shows what? |
Each neutron module |
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What does the LRM control module show on linear mode |
The status display is 1 second every 20 seconds |
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What does the LRM display in totalize mode? |
Waterfall log of summed gamma (leftside) neutron (rightside) |
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The LRM has what switch? |
5 position switch and can be moved quickly without rebooting |
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How does the LRM update button work? |
Averages the last 16 seconds of data? |
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Can you add or remove modules while the LRM is on? |
Yes |
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What’s the gamma detector in the LRM |
Cesium iodide scintillator |
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LRM gamma detector sensitivity? |
2.2 cps per micro R/hr |
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LRM gamma detector low energy cutoff |
45 kev |
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LRM gamma detector low energy cutoff |
45 kev |
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LRM neutron detector type |
Helium 3 -8.3 atmospheres |
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LRM gamma detector low energy cutoff |
45 kev |
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LRM neutron detector type |
Helium 3 -8.3 atmospheres |
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LRM neutron detector size |
.75 inch 4.8 inches |
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LRM gamma detector low energy cutoff |
45 kev |
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LRM neutron detector type |
Helium 3 -8.3 atmospheres |
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LRM neutron detector size |
.75 inch 4.8 inches |
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LRM neutron detector sensitivity |
10.5 cps/nv |
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LRM how many feet of cable connect the control module to first detector |
9 feet for slack on containers |
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How much batt is left in LRM after low batt warning? |
1 hour |
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After LRM powers up? |
Gamma displays will display clockwise circle for 16 seconds |
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If the update button is not pressed in 5 seconds LRM? |
LRM with auto go into linear mode |
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In totalized mode the LRM measures in? |
Counts per second |
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To conduct a summed or totalized search with LRM? |
Sweep at 2-6 feet per second Get within 10-15 feet of each object |
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LRM in totalized mode the plot shows 45 but in lines is 16 seconds used for update see pic |
Back (Definition) |
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Doing container search on LRM you can do what with extra? |
Leave in bag or double over on self |
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How big is the tarp on the LRM |
5ft x 4 ft |
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Finder weight |
2.76 lbs w batts |
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Finder weight |
2.76 lbs w batts |
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Finder op temp? |
5 to 131 Fahrenheit |
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Finder weight |
2.76 lbs w batts |
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Finder op temp? |
5 to 131 Fahrenheit |
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Finder drop test? |
2.62 ft on concrete |
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Finder sensitivity |
500 cps per 100mrem/h |
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Finder dose range |
10 micro rem to 100 rem |
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How long must the power pack +be charged? |
At least 12hr before turning on |
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Power pack + uses what batts |
4 AA 1.2v to 1.8v |
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Finder op time? |
Up to 8 hours with NiMH in dose rate mode |
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What typical values are shown in finder for batteries |
5V for fully charged or 6v when power pack + is being charged |
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What volts will finder shut off? |
3.9V |
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What size screwdriver for opening finder batt pack? |
Small #1 flat head screwdriver |
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What firmware finder needs to be returned |
3.18.05 |
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Finder suggested default settings are? |
Id 4 isotopes using 300 second acquisition time and 0 seconds extended time |
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What library is the EOD library |
Secur |
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What happens if backup battery is dead in finder |
No spectra will be saved once unit is turned off or batt dies |
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What does a U indicate on the finder |
Successful calibration hasn’t happens yet |
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At what dose rate will finder go from the scintillation detector to GM tube? |
500mrem/hr |
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Finder is not intended as a |
Search tool |
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When finder mode is selected but gather how much background? |
8 seconds |
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What happened if finder displays “ insufficient counts or low activity” |
Time to short or levels too low algorithm wasn’t started |
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Finder nuclide displays range? |
1 unlikely to 10 very likely |
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How many spectra can be saved |
100 total 0-99 |
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Udr15 is |
Portable radiation detector detecting neutron/gamma radiation dose and gamma dose rate |
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Udr15 measuring and display range |
0-500 r/hr gamma dose rate Doseimeter can measure and store doses up to 999 R |
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Udr15 batts? |
4 aaa dry cells |
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Udr15 batt life |
100 hr normal op Sleep mode 1000 hrs |
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Udr15 op/storage temp |
-51 to 120 Fahrenheit Storage -60 to 160 Fahrenheit |
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Udr15 op/storage temp |
-51 to 120 Fahrenheit Storage -60 to 160 Fahrenheit |
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Udr15 altitude op? |
15,000 ft above sea level |
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Udr15 humidity capes |
95% |
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Water resistant udr15 |
Up to 3 feet deep |
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Udr accuracy |
+\- 20% of true dose |
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Udr will display what In most background areas? |
.020 |
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Udr units will blink every ? To indicate its working? |
2 seconds |
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If udr is flashing a what the dosimeter should be replaced soon |
A flashing 4 |
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Most udr things are what seconds? |
10 seconds |
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Udr when pressing the light button it lights up for? |
Approx 6 second or 5? Challenge this question |
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When udr has 600 minutes left? |
Blinking BAT will appear at top left corner |
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When replacing udr batts hold in what hand? |
Left |
