BOMB THREAT STANDOFF DISTANCESMandatory Evacuation distance: 70 feet Preferred Evacuation distance: 1,200+ feet Severe injury/death Mandatory Evacuation distance: 110 feet Preferred Evacuation distance: 1,700 feet Possibility of building collapse, severe injury/death Mandatory Evacuation distance: 320 feet Preferred Evacuation distance: 1,900 feet Building collapse, severe injury/death EXPLOSIVES DHS/FBI BOMB THREAT STAND-OFF CARD
LIQUEFIED PETROLEUM GAS: LPG (BUTANE OR PROPANE) |
THREAT | LPG MASS/ VOLUME 1 | FIREBALL DIAMETER 2 | SAFE DISTANCE 3 |
---|---|---|---|
SMALL LPG TANK | 20 LBS/5 GAL 9 KG/19 L | 40 FT/12 M | 160 FT/48 M |
LARGE LPG TANK | 100 LBS/25 GAL 45 KG/95 L | 69 FT/21 M | 276 FT/84 M |
COMMERCIAL/ RESIDENTIAL LPG TANK | 2,000 LBS/500 GAL 907 KG/1,893 L | 184 FT/56 M | 736 FT/224 M |
SMALL LPG TRUCK | 8,000 LBS/2,000 GAL 3,630 KG/7,570 L | 292 FT/89 M | 1,168 FT/356 M |
SEMI-TANKER LPG | 40,000 LBS/10,000 GAL 18,144 KG/37,850 L | 499 FT/152 M | 1,996 FT/608 M |
1
BASED ON THE MAXIMUM AMOUNT OF MATERIAL THAT COULD REASONABLY FIT INTO A CONTAINER OR VEHICLE. VARIATIONS ARE POSSIBLE.
2
ASSUMING EFFICIENT MIXING OF THE FLAMMABLE GAS WITH AMBIENT AIR.
3
DETERMINED BY US FIREFIGHTING PRACTICES WHEREIN SAFE DISTANCES ARE APPROXIMATELY FOUR TIMES THE FLAME HEIGHT. NOTE THAT AN LPG TANK FILLED WITH HIGH EXPLOSIVES WOULD REQUIRE A SIGNIFICANTLY GREATER STANDOFF DISTANCE THAN IF IT WERE FILLED WITH LPG.
MAXIMUM RADIATION DOSE LIMITS
The above chart summarizes the US Department of Health & Human Services /National Council on Radiation Protection and Measurement (NCRP) recommended maximum dose limits.
DOSE LIMIT 1 (WHOLE BODY) | EMERGENCY ACTION DOSE GUIDELINES ACTIVITY PERFORMED |
---|---|
5 R | ALL ACTIVITIES |
10 R | PROTECTING MAJOR PROPERTY |
25 R | LIFESAVING OR PROTECTION OF LARGE POPULATIONS |
>25 R | LIFESAVING OR PROTECTION OF LARGE POPULATIONS, ONLY BY VOLUNTEERS WHO UNDERSTAND THE RISKS. |
AS LOW AS REASONABLY ACHIEVABLE (ALARA) PRINCIPLES SHOULD ALWAYS BE FOLLOWED:
A
Maximize Distance
B
Minimize Exposure Time
C
Maximize Shielding
1
REM (ROENTGEN EQUIVALENT MAN) 1/1,000 REM = 1 MILLIREM (MREM)
IMPROVISED EXPLOSIVE THREAT GUIDE: OXIDIZERS
WHEN COMBINED, FUELS AND OXIDIZERS CREATE EXPLOSIVES
Oxidizers serve as a source of oxygen to support a combustion-like reaction in improvised explosives.
OXIDIZERS | COMMONLY ASSOCIATED WITH OXIDIZERS | OXIDIZER COMPOUNDS |
---|---|---|
PERCHLORATE/CIO4 | POTASSIUM PERCHLORATE = KCIO4 | |
1 CHLORATE/CIO3 | SODIUM CHLORATE = NaClO3 | |
HYPOCHLORITE/CIO | CALCIUM HYPOCHLORITE = Ca(CIO)2 | |
NITRATE/NO3 | SODIUM/Na POTASSIUM/K BARIUM/Ba CALCIUM/Ca AMMONIUM/NH4 LITHIUM/Li STRONTIUM/Sr LEAD/Pb SILVER/Ag HYDROGEN/H | AMMONIUM NITRATE = NH4NO3; POTASSIUM NITRATE = KNO3 |
1 PEROXIDE/O2 | HYDROGEN PEROXIDE = H2O2; BARIUM PEROXIDE = BaO2 | |
PERMANGANATE/MnO4 | POTASSIUM PERMANGANATE = KMnO4 | |
IODATE/IO3 | LEAD IODATE=Pb(IO3)2 | |
CHROMATE/CrO4 | LITHIUM CHROMATE DIHYDRATE= Li2CrO4·2H2O | |
DICHROMATE/CrO7 | POTASSIUM DICHROMATE = K2Cr2O7 |
1
CHLORATE AND PEROXIDES CAN PRODUCE VERY DANGEROUS EXPLOSIVE MIXTURES.
Fuels consist of anything that can readily react with oxygen in a manner that produces heat. Elemental fuels can create very sensitive mixtures when mixed with oxidizers.
HYDROCARBONS | ENERGETIC HYDROCARBONS | ELEMENTAL "HOT" FUELS |
---|---|---|
GAS DIESEL (FO) KEROSENE NAPHTHA CARBON BLACK CHARCOAL SUGAR WAX/PARAFFIN VASELINE DEXTRIN SHELLAC ROSIN SAWDUST ALCOHOL ETHYLENE GLYCOL | NITROBENZENE (NB) NITROMETHANE (NM) NITROCELLULOSE (NC) | POWDERED METALS MAGNESIUM (Mg) MAGNALIUM (Mg/Al-50/50) COPPER (Cu) PHOSPHORUS (P) SULFUR (S) ANTIMONY TRISULFIDE (Sb2S3) |
Oxidizers can be blended with a variety of fuels to produce explosive mixtures. Listed above are numerous common examples of these blended improvised explosives.
COMMON OXIDIZERS | NITRATE BLENDS | CHLORATE / PERCHLORATE BLENDS |
---|---|---|
SODIUM CHLORATE: NaClO3 POTASSIUM CHLORATE: KClO3 AMMONIUM PERCHLORATE: NH4ClO4 CALCIUM HYPOCHLORITE: Ca(CIO)2 AMMONIUM NITRATE: NH4NO3 POTASSIUM NITRATE (SALTPETER): KNO3 HYDROGEN PEROXIDE: H2O2 BARIUM PEROXIDE: BaO2 POTASSIUM PERMANGANATE: KMnO4 NITRIC ACID: HNO3 | ANFO ANAI ANS ANIS
ANIS BLACK POWDER | FLASH POWDER POOR MAN’S
C-4 ARMSTRONG’S MIXTURE LIQUID BLEND AHELLHOFFITE + NITRIC ACID + NITROBENZENE (NB) |
A variety of chemical precursors can be reacted together to create explosives.
COMMON PRECURSORS | NITRATED EXPLOSIVES | PEROXIDE EXPLOSIVES |
---|---|---|
HYDROGEN PEROXIDE: H2O2 STRONG ACIDS NITRIC: HNO3 HYDROCHLORIC “MURIATIC”: HCI UREA (FERTILIZER 46-0-0) METHYL ETHYL KETONE (MEK) ALCOHOL (ETHYL OR METHYL) ETHYLENE GLYCOL (ANTIFREEZE) GLYCERIN(E) (GLYCEROL) HEXAMINE (CAMP STOVE TABLETS) CITRIC ACID (SOUR SALT) | NITROGLYCERINE (NG) ETHYLENE GLYCOL
DINITRATE METHYL NITRATE UREA NITRATE NITROCOTTON (GUN COTTON) | TRIACETONE TRIPEROXIDE (TATP) HEXAMETHYLENE TRIPEROXIDE DIAMINE (HMTD) METHYL ETHYL KETONE PEROXIDE (MEKP) INITIATING EXPLOSIVES MERCURY FULMINATE |