A. item technical safety information



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Appendix B646

Inspection procedures for Cartridge, 60mm Smoke, WP, M722, w/ Fuze, Point-detonating, M745



A. ITEM TECHNICAL SAFETY INFORMATION:
1. FSC: 1310
2. PKG: 1.3H 4. Fire Sym: 3
3. UNPKG: 1.3H 5. Chem Haz Sym: Set 2 (“White Man”)

B. SAFETY PRECAUTIONS:
1. IF SMOKE IS ENCOUNTERED, immediately immerse the round completely in water!

WP-filled munitions will smoke, then burn (and possibly detonate) if the WP filler is exposed to air. Immersion in water will block the WP from contact with air, and the smoking/burning will stop.

a. Immersion water WILL be at hand. The vessel will be low enough to minimize lifting the round to get it into the water.

b. Notify EOD support (and/or other emergency responders) of the situation IAW local procedures.


2. The family of newer 60mm mortar cartridges makes use of combustible propellant increment cases.

a. These cases are fragile. Propellant grains are not retained in an inner bag, so extra care must be taken not to break the increment case.

b. Although the risk of an electrostatic discharge initiating the propellant is negligible, inspector shall periodically touch the grounding mat or other grounded metal surface (e.g., the grounding lead clipped to the tailgate of a truck, for inspections conducted under field conditions) in order to dissipate charges that may have built up on his or her person.
3. General safety and handling precautions apply.

C. INSPECTION PROCEDURES
1. Outer Pack. Inspect wooden wirebound outer packs for serviceability. Classify defects IAW SB 742-1. Sequence of inspection points is immaterial, as long as all inspections are conducted.


a. Wooden box sound; will protect contents during shipment and storage.

b. Pack is tight enough to preclude excessive

movement of contents.
c. Wire closure loops not broken.

d. Markings are legible, correct, and complete enough to positively identify the contents. As a

minimum, markings must include:
(1). B646

(2). Lot number

(3). Quantity

(4). “Ammunition, smoke, white phosphorus”

(5). “UN 0246”
(6). A light green square with “WP” marked on it in red will appear on the marking side of the box next to the edge on the viewer’s left.

e. Both wirebound box ends bear the heat treated wood marking, thus:



f. Box sealed with antipilferage seal or banding.

a. (I) Splits, chips, dry rot, etc., acceptable as long as the box continues to protect its contents.

c. (I) Must be able to securely close the box; repairs or use of banding in lieu of wire closures is acceptable


d. (1) (I)&(O) See DWG 9293440 for markings. Make note of markings which need to be applied to the box(es) prior to shipment; record on the DSR card.

d(3). (Info) Standard depot pack holds 16 rounds.

d(4) & (5) (I) The proper shipping name and UN

identification number will appear on the top of the wirebound box.


WP


UN POP markings are to appear on the outer pack

for items manufactured after January 1990.


e. (Info) Heat treated wood packaging material has been a requirement for international shipment since 2004.
e. (I) Absence of this marking is not considered to be a defect, as such, but will be recorded as noncompliant wood outer pack, and identified using defect code “CPO82R”


2. INNER PACK. Inspect metal PA70 metal boxes for serviceability. Sequence of inspection points is immaterial, as long as all inspections are conducted. Classify defects IAW SB 742-1.




a. Assure metal boxes are clean, dry, and

serviceable.

(1). There should be no holes, perforations, split seams, or other breaks.
(2). There should be no distortion, creases, or

folds in the metal.


(3) There should be no dents affecting the

structural integrity of the metal box.


(4) There should be no dents more than four (4) inches square, nor more than ¼ inch deep.
(5) There should be no dents or damage that

will preclude taking the items out of the box.


(6) Rust or other foreign material, if present,

should not obscure markings to the point of precluding identification of the box’s contents.


(7) Rust or other foreign material should not interfere with operation of the lid and sealing of the box.
(8) Closures should hold the box securely closed.
(9) Metal containers marked correctly. Markings must include:
(a). 1310-01-236-1354 B646
(b). Ctg, 60mm Smoke WP M722

with Fuze, PDC, M745


(b) Lot number
(c) Quantity of cartridges

(d) THIS SIDE UP on the top/lid of the

metal box
(e) Orientation arrows pointing toward

the lid on the upper left-hand corner on each long

side (i.e., “front” and “back”).
(10) Gasket and sealing surfaces are clean and

will provide a watertight fit.



a. (I) Any damage which might admit moisture is a major defect.

(9) (I) Markings which misidentfy the type of ammunition are a CRITICAL defect. Incorrect lot number is a major defect.


(9)(c) (Info) A standard pack metal box holds 8 cartridges.


(9)(d) (I) Missing this marking is a major defect.

(9)(e) (I) Missing this marking is a major defect.



b. Inspect PA78 fiber containers as follows:




(1). Assure all PA78 fiber containers have been placed inside the PA70 metal box with the cap end down.

(2). Assure PA 78 fiber containers are "sealed"

with at least 1-1/4 wraps of pressure-sensitive tape at the junction of the end cap to the container body.
(3). Assure PA 78 fiber containers are clean,

dry, and serviceable.


(a). There should be no holes, perforations, cuts, tears or gouges.
(b) There should be no wrinkles or peeling

caused by looseness between layers.


(c) There should be no blistering of the

surface of the fiber container.


(d) There should be no evidence of moisture

absorption.


(e). There should be no distortion, creases, or folds in the metal ends.
(f) There should be no separation of the metal ends from the fiber end cap bodies.
(g). There should be no dents or damage that

will preclude removal of end caps and/or removal of

items from the fiber container.
(h). Scuffs or foreign material, if present,

should not obscure markings to the point of precluding identification of the box’s contents.


(i). Fiber containers are to be marked correctly. Markings must agree with those on the outer pack, and must include:

(i) Ctg, 60mm Smoke WP M722 with

Fuze, PD, M745.
(ii) Lot number
(4). Assure packing spacers inside the PA 78 fiber container are present, clean, dry, and serviceable.
(a). There is a spacer between the

primer and the metal of the end cap.


(b). There is a rigid stop which secures the nose end of the projectile in the main body of the fiber container.

(1) (Info) This orients the nose end of the ctgs UP. This orientation reduces problems if the rounds are exposed to temperatures exceeding 115oF. Misoriented rounds is a minor defect.

(a) (M) Tears smaller than 1/2 square which do not penetrate all impregnated layers may be sealed by spot painting IAW TM 9-1300-251-20&P.

(i) (I) Markings which misidentfy the type of ammunition are a CRITICAL defect. Incorrect lot number is a major defect.

(b). (Info) The rigid stop is not removable from the fiber container.



3. ITEM.


NOTE: The family of newer 60mm cartridges uses combustible propellant increments. Extreme care must be exercised in the handling of rounds that have such increments. Operators must periodically ground themselves while handling these cartridges.


Inspect cartridges for the following defects. Classify defects IAW SB 742-1. Evidence of “leaking” (i.e., smoke) is a CRITICAL defect. Sequence of inspection is irrelevant, as long as all steps are conducted.
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