What does NSN Consists of?
- Comprises of four groups of characters with each group describing an element of the item concerned
- 1310-00-992-0451
1310 = NSC (National Supply Classification)
(1310 – Ammunition 30mm to 75mm)
00-992-0451 = NIIN (National Item Identification) used on most documentation
00 = Country of manufacture / origin
992-0451 = Part No
ASN
Two Parts
* Five character Prefix which utilises the current (TSN)
* Two character suffix which denotes
Model Number
Packaging method
ASN Groups
00100 -02999 - TSN
03000 -04999 - Spare/ Maint items
05000 -05999 - Trial items
06000 -07999 - Inert items
08000 -08999 - Packaging
09000 -09999 - Salvage items
Nomenclature
BASIC NAME - Cartridge
MODIFIERS - 76mm
ADDITIONAL MODIFIERS - Cannister
MODEL NUMBER - L33A1
UK AMMUNITION MODEL
NUMBERING
“L” model numbering system introduced to “L” model numbering system introduced to replace old system of numbers, marks, submarks
L = Land service
1 = First or original design
A1 = Design modification which is not operationally significant
Experimental development
Example of an item designation throught the experimantal process
* XM1
During research
* M1
On standardisation
* XM1E1
Further research
* M1A1
When put into production
Explain HD 1.1
- Contains ammunition which presents a mass explosion hazard, which will produce severe structural damage to surrounding buildings in the immediate neighbourhood
- The severity of the damage is dependent upon the quantity of explosives involved and the distance of the buildings from the explosion site
- Blast and high velocity fragments are the major hazards although there may be a danger from heavy fragments propelled from the structure in which the explosion occurs.
Explain HD 1.2
- Contains ammunition which has a projection hazard but not a mass explosion hazard
- The explosion will result in items burning and exploding a few at a time. Fragments, firebrands and unexploded items may be projected in considerable numbers, some of which may explode on impact and so propagate fire, and/or explosion
- Blast effects will be limited to the immediate vicinity of the exposed site
Explain subdivisions of 1.2
- HD 1.2.1 comprises those munitions that contain a high explosive charge and may also contain a propelling or pyrotechnic charge. These items will have an individual NEQ greater than 0.73kg.
- HD 1.2.2 comprises those munitions that contain a high explosive charge and may also contain a propelling or pyrotechnic charge. These munitions will have an individual NEQ equal to or less than 0.73kg.
What are the different HD?
- HD 1.1 - Blast
- HD 1.2 - Projection Effects
HD1.2.1 - NEQ > 0.73kg
HD 1.2.2 - NEQ <= 0.73 Kg - HD 1.3 - Fire and Radiant Heat
HD 1.3.3 - Producing a mass fire effect
HD 1.3.4 - Not producing mass fire effect - HD 1.4 - No significant hazard
- HD 1.5 - Blast
- HD 1.6 - Fire and Radiant heat
Explain Compatibility Group
CG signifies compatibility for storage without increasing probability or magnitude of an accident
Different CG.
A-
B -
C-
D -
E -
F -
G -
H -
J -
K -
L -
N -
S -
Purpose of marking packages
To ensure quick correct and sufficient identification of contents
* To provide all necessary details to assist inspection
* Identify EO that is faulty / suspended
* To facilitate the issue of the correct nature and type of EO
* To provide sufficient information for storage and transport
Mandatory marking on an outer package
- UN Number
- HCC Label
- UN Shipping Name
- Quantity
- Service nomenclature
- Stock Number (NSN)
- Lot/Serial Number details
- Net Explosive Quantity for the package
- Volume and gross weight
- Operational abbreviation
- Contents label unless elsewhere on packagelabel unless elsewhere on package
Stock Number (NSN)
Quantity of items in package
Lot/Serial Number
Requisition/order details - FRACTION Label
- First Issue Label (EO102)
- DG Subsidiary Risk Label
- Exposed time expired date
Methods of marking an outer package
- Stencilling
- Pre-printed self-adhesive labels
Colour of markings
- White on olive drab lustreless
- Black on unpainted or natural finishes
- Black on grey
- Inspection and other workmarking are to be in golden yellow
Workmarks
S = Serviceable
SR = Serviceable Restricted
SX = Serviceable Not in Servie
R = Repairable
RR = Repairable Restricted
RX = Repairable Not in service
N = Not reapiarable
P = Pending
Explain 1.3
- Contains ammunition which has a fire hazard and either a minor blast hazard or a minor projection hazard or both, but not a mass explosion hazard
- Items in this division may explode but do not usually form dangerous fragments. Firebrands and burning containers may be projected.
- It includes some items which burn with great violence and intense heat emitting considerable thermal radiation (mass fire hazard) and others which burn sporadically.
Explain 1.4
- Contains ammunition with only a moderate fire hazard which will not contribute excessively to the fire
- The effects will be largely confined to the package, however the external fire may cause the package to be degraded such that it will not entirely contain the effects of the ammunition
- No fragments of appreciable size or range are to be expected. An external fire will not cause a mass explosion of the total contents of the package, irrespective of the number of items in the package
Exlpain 1.5
- Contains ammunition which although potentially mass explosive, very insensitive
- usually when conditions of extreme confinement plus large quantities are involved
- Ammunition in this division is confined to certain types of bulk explosives which are so insensitive that there is very little probability of a transition from burning to detonation under normal conditions of storage and transport
Explain 1.6
- Contains extremely insensitive articles which do not present a mass detonation hazard
Explain subdivisions of 1.3
- HD 1.3.3 –producing a mass fire effect
Consists of the more hazardous items of HD 1.3 and are more likely to be bulk packed gun propellants which produce a fireball with intense radiant heat, firebrands and some a fireball with intense radiant heat, firebrands and some fragments.
The firebrands may be only small glowing particles of packaging materials but sometimes there may be massive fiery chunks of burning propellant.
Ammunition that gives rise to considerable radiant heat - HD 1.3.4 not producing a mass fire effect
Consists of the less hazardous items of HD 1.3 that produce a moderate fire with moderate projections and firebrands.
REMEMBER THIS QUESTION
Definition of a lot
A lot is a discrete quantity of EO or components that are as homogeneous
as possible and under similar conditions of use may be expected to give uniform performance
REMEMBER THIS QUESTION
Define a BATCH
A batch is a discrete quantity of EO that is assembled from two or more lotted components (one of which will be the primary batching component), and under similar conditions of use, may be expected to give uniform performance.
