1. LT. 1.1 PROTECTIVE MASK AND CLOTHING (1-1 page 1)

2. Enabling objectives 1.1 Inspect individual protective mask.
1.2 Perform the five levels of mission-oriented protective posture.
1.3 Describe the procedures for relieving oneself in a contaminated environment.

3. MCU-2/P MASK Sizes are : small medium large
Identified by a raised letter on facepiece.

4. MCU-2/P MASK COMPONENTS
Head Harness
Facepiece
Lens
Nosecup
Nosecup Valves
Voicemitter
Inlet Valve Assy
Outlet Valve Assy
Outlet Valve Cover
Drinking Tube

5. MCU-2/P MASK Inspection
(page 3)
1. Head Harness
2. Buckles
3. Tabs
4. Faceseal
5. Facepiece
6. Lens
6. Side Voicemitter
Retaining Ring.
7. Side Voicemitter
9. Front Voicemitter Retaining Ring
10. Front Voicemitter

6. MCU-2/P MASK Inspection
11. Inlet valve disk
14. External Drinking
Tube
12. Outlet Valve Disk
13. Outlet Valve Cover
15. Internal Drinking Tube
16. Nosecup

7. CANISTER (page 4) Canisters are packaged in sealed containers
and have a shelf life of five years from date
of manufacture.
Extensions are based on surveillance test
results.
Canisters not effective against ammonia,
carbon monoxide, carbon dioxide,
commercial fuel gases, nitrous fumes,
or sulfur dioxide

8. CANISTER SHOULD BE CHANGED WHEN:
Clear indication chemical/biological agents is imminent and MOPP level III is set by Commanding Officer
Thirty days after exposure
Immediately after exposure to blood agents

9. CANISTER SHOULD BE CHANGED WHEN: cont.
Evidence of mechanical damage.
Immersed in water ,becoming wet in any manner.
Excessive breathing resistance.
Exposure to oily smoke.

10. ACCESSORIES (pages 5 and 6)
Carrier
Outserts
Water proofing bag

11. CARRIER (page 5) The mask should be stored in
a ready condition inside the
mask carrier.
May be worn in any
of these three positions.
Web Belt carry.

12. Waist carry

13. shoulder carry

14. CARRIER Shoulder strap D-ring Front hook Waist strap Rear hook
Shoulder strap pocket
Waist strap hook Pile fastener
Accessory pocket
Carrier flap pull tab
Inside top pocket
Large inside pocket

15. OUTSERTS
Protects the mask while stored in the mask carrier and also protect the lens from chemical droplets and oil/petroleum products when the mask is worn.
Issued in two sizes, small and medium/large.

16. WATER PROOFING BAG (page 6)
Stowed in the carrier- used to protect the mask and canister from moisture.
To use the water proofing bag, the following applies:
Remove the waterproofing bag
Put the mask in the bag
Gather open end
Squeeze bag
Twist gathered end of bag tightly, fold twisted part back
Use a rubber band, secure end
Place bag in carrier
Close carrier flap

17. WARNING!!!!
DO NOT STORE FOOD IN THE WATERPROOF BAG. POSSIBLE TOXIC EFFECTS COULD RESULT.
DO NOT STORE YOUR MASK IN THE WATERPROOF BAG FOR MORE THAN 24 HOURS, MOISTURE AND OFF-GASSING BUILD-UP IN THE BAG MAY AFFECT THE CANISTER.

18. ADDITIONAL ACCESSORIES
Combat Spectacles (MAG 1)
M-1 Canteen Cap

19. MASK FITTING PROCEDURES (page 7 through 10)
A correctly adjusted mask is necessary for the mask to fit properly.
Remove outsert and canister.
Loosen straps all but one inch from buckle
Reverse head harness
Pull head harness, quick don tab
Tighten temple straps
Headpad centered

20. MASK FITTING PROCEDURES
NOTE *** TIGHTEN ALL STRAPS TOWARDS THE REAR OF YOUR HEAD.
WARNING !!!!! DO NOT OVERTIGHTEN STRAPS, THIS MAY CAUSE DISTORTION OF MASK, CAUSING LEAKS.

21. MASK FITTING PROCEDURES
Chin strap tighten
Forehead strap tighten
Shake head side to side and up and down retighten if necessary.
Install canister
Test drinking tube

22. NEGATIVE PRESSURE CHECK (page 8)
Press palm over canister, breathe in lightly until resistance is felt. Hold breath for five to ten seconds.

23. WARNINGS!!!!!
DO NOT HOLD THE MASK BY CANISTER. A CANISTER WHICH HAS NOT BEEN SEATED PROPERLY IS THE MOST COMMON CAUSE OF LEAKING MASK.
COLLAPSING THE LENS WHILE PERFORMING NEGATIVE PRESSURE CHECK MAY UNSEAT THE OUTLET VALVE DISC AND CAUSE IT TO BECOME LODGED IN THE OUTLET VALVE BODY.

24. NEGATIVE PRESSURE CHECK (page 8)
If outlet valve disc should become lodged, follow procedures below.
Hold breath and close eyes
Hold facepiece firmly against face, pull down and out on outlet valve cover to expose disc
Dislodge disc by lightly rubbing in a circular motion.

25. NEGATIVE PRESSURE CHECK
Clear mask by exhaling
Conduct negative pressure check
Open eyes and breath normally
Replace outlet valve cover

26. LEAK CHECKS
You must check the mask for leaks when it is fitted, each time you put it on and when you change canisters.
Install canister before performing leak checks.

27. DRINKING TUBE LEAK CHECK (page 8)
To perform a leak check the following procedures should be used.
Test drinking tube-blow into, until resistance is felt.

28. DONNING PROCEDURES (page 9)
With suspected presence of
contamination, don your mask
immediately before taking another
breath.
You must presume the following prior to donning the mask
eyeglasses or contact lenses removed
mask leak checked and ready for donning
procedures

29. DONNING PROCEDURES Stop breathing Close eyes tightly Remove headgear
Open carrier and remove mask
Don mask using the quick don pull tab
Tighten neck straps
Expel air that has been held in the lungs
Check seal by covering canister opening and inhaling

30. DONNING PROCEDURES Open eyes and resume normal breathing
Check seal by covering
canister opening and inhaling
Expel air that has been held
in the lungs
Don mask using the
quick don pull tab
Secure hood, don headgear
Stop breathing
Close carrier
Close eyes tightly
Open carrier and remove mask
Remove headgear
Tighten neck straps

31. DOFFING PROCEDURES (page 9)
For uncontaminated environment are as follows :
Loosen mask neck straps
Unfasten and lower hood
Remove headgear
Remove mask
Reverse head harness, shake or wipe any moisture from inside mask.
Stow mask in carrier

32. DOFFING PROCEDURES For a Contaminated or Unknown Environment:
With a M256A1 kit (15 min)
Without a M256A1 kit

33. DOFFING PROCEDURES For a Contaminated or Unknown Environment:
Should be conducted as soon as possible to alleviate soldiers’ encapsulation and restore their combat potential.
Two Unmasking Procedures:
With M256A1 Chemical Agent Detector Kit
Without M256A1 Chemical Agent Detector Kit 4

34. Overview of Unmasking Procedures (cont.)
Selected soldiers should be disarmed before they unmask.
Should be conducted in shade. Bright, direct sunlight can cause pupils in the eyes to constrict, giving false signs of nerve agent exposure. 5

35. Unmasking with the M256A1 Chemical Agent Detector Kit
(1) Senior person present selects one or two soldiers to unmask after permission is received from higher headquarters.
(2) Conduct unmasking procedures in shade.
(3) Use M256A1 Chemical Agent Detector Kit to test for chemical agents. Use M8 Paper to check for liquid contamination.
NOTE: Continue only if both tests come up negative. 6

36. Unmasking with the M256A1 Chemical Agent Detector Kit (cont.)
(4) Direct at least two soldiers to unmask for 5 minutes and then don, seal, and clear masks.
(5) Observe these soldiers for 10 minutes for symptoms.
(6) If no symptoms appear, direct all soldiers to unmask. 7

37. Unmasking with the M256A1 Chemical Agent Detector Kit (cont.)
(7) Check soldiers for delayed symptoms. Have first aid treatment available.
(8) Complete steps (1) through (7) in sequence.
NOTE: This entire procedure will take approximately 15 minutes. 8

38. Unmasking without M256A1 Chemical Agent Detector Kit
(1) Senior person present selects one or two soldiers to unmask after permission is received from higher headquarters.
(2) Conduct unmasking in the shade.
(3) Use M8 paper to check for possible liquid contamination.
NOTE: Continue unmasking procedures only if test is negative. 10

39. Unmasking without M256A1 Chemical Agent Detector Kit (cont.)
(4) Select one or two soldiers to take a deep breath and break the seals of their masks, while keeping their eyes open for 15 seconds; then reseal and clear their masks.
(5) Observe them for 10 minutes for symptoms.
(6) If no symptoms appear, direct these soldiers to break the seals of their masks, take two or three breaths, and then reseal and clear their masks. 11

40. Unmasking without M256A1 Chemical Agent Detector Kit (cont.)
(7) Observe them for 10 more minutes for symptoms.
(8) If no symptoms appear, direct these soldiers to unmask for 5 minutes and then don, seal, and clear their masks.
(9) Observe them for 10 minutes for symptoms. 12

41. Unmasking without M256A1 Chemical Agent Detector Kit (cont.)
(10) If no symptoms appear, direct all soldiers to unmask.
(11) Check soldiers for delayed symptoms and have first aid available.
(12) Complete steps (1) through (11) in sequence.
NOTE: This entire procedure will take approximately 35 minutes. 13

42. CHEMICAL PROTECTIVE ENSEMBLE (Saratoga Suit) (Page 11)
Individual protective action should be an immediate concern when personnel are under chemical, biological, and radiological attack.

43. CHEMICAL PROTECTIVE ENSEMBLE (page 11)
The Saratoga Suit is a camouflage over garment consisting of a coat and trousers. Normally worn over uniform, in high temps, may be worn over underwear.
The suit protects against chemical agent vapors, liquid droplets, biological agents, toxins and radioactive alpha particles.
Contact with POL’s will significantly degrade protection provided by suit.
Contaminated environment, provides 24 hours of protection.
Can be worn for 30 consecutive days and may be laundered up to 10 times within those 30 days.

44. FIVE LEVELS OF MISSION ORIENTED PROTECTIVE POSTURE/DONNING
PROCEDURES (MOPP) M
ission
MOPP II
MOPP III
MOPP IV
MOPP 0
MOPP I
NOTE:
MOPP Levels 1-4 can be either Open or Closed reference unit SOP O
riented P
rotective P
osture

45. MOPP I
DON TROUSERS
SMOCK
OVERBOOTS
MOPP II

46. Lacing Overboots Single Rear Eyelet (older model) Two Rear Eyelets
(newer model) 19

47. DON MASK
MOPP lll
MOPP IV
Don chemical cotton liners,and gloves

48. CAUTION!!!
ENSURE THAT THE HOOD IS PULLED DOWN SECURELY AROUND THE FACEPIECE OF THE MASK SO THAT NO SKIN IS EXPOSED

49. MASK ONLY POSTURE
WARNING *** DO NOT USE MASK ONLY POSTURE WHEN BLISTER/ NERVE AGENTS ARE PRESENT.

50. RELIEF OF BODILY WASTE

51. SUMMARY AND REVIEW PROTECTIVE MASK CHEMICAL PROTECTIVE CLOTHING
MISSION ORIENTED PROTECTIVE POSTURE
RELIEF OF BODILY WASTE