VICTIM RESCUE UNIT (VRU) / VICTIM RESCUE UNIT PLUS (VRU+) · 2016. 4. 13. · DBA Essex PB&R...

DBA ESSEX PB&R CORPORATION

4150 CARR LANE COURT ST. LOUIS, MO 63119

(314) 351-6116 (800) 296-7587 FAX (314) 351-7181

Revision: 7 Dated: 4/23/2015

VICTIM RESCUE UNIT (VRU) / VICTIM RESCUE UNIT PLUS (VRU+)

TECHNICAL DATA PACKAGE

DBA Essex PB&R Corporation

Technical Data Package for the VRU /VRU+


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TABLE OF CONTENTS TITLE PAGE

REVISION RECORD SHEET 3

ADDENDUM 4

GENERAL INFORMATION 5

SIZE 7

WEIGHT 7

PACKAGING OF UNITS FOR STORAGE 7

PACKAGING OF UNITS FOR TRQANSPORTATION 7

SHELF LIFE 9

DONNING 9

CE MARK CERTIFIED BODY 9

STATEMENT OF WARRANTY 9

OXYGEN 10

CARBON DIOXIDE 10

PROTECTION FACTOR 10

SIZING/FITTING 12

VISIBILITY 12

INSIDE HOOD TEMPERATURE 12

OPERATING TEMPERATURE RANGE 12

STOWAGE TEMPERATURE RANGE 12

INSPECTION 12

THERMAL PROPERTIES 12

MATERIALS OF CONSTRUCTION 13

PERFORMANCE 15

VRU DONNING PROCEDURE 15

VRU TRAINING UNIT 15

ESSEX SEMI-AUTOMATIC VRU DONNING ILLUSTRATION 18

ESSEX SEMI-AUTOMATIC VRU DONNING STEPS 19

WARNING 20




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Revision Record Sheet

Rev #

Date Description of Revision

2 12/14/04 Added Revision Sheet, page 3 to manual; added Training Unit section; added Statement of Warranty; and re-numbered all pages accordingly.

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8/04/06 Revision includes: changed all address and phone number references to the new, St. Louis, Mo. location; adding new AS9100B & ISO9001-200 Certified logo; and revised Statement of Warranty that changed the warranty period from 10 years to 10 years 6 months and added an additional “foregoing warranty statement”.

4 8/01/11 Revision includes: changed all address references to the new facility location.

5 01/01/12 Changed Company Name from Essex PB&R Corporation to Essex Industries dba Essex PB&R Corporation.

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03/24/15 Added: Packing of Units for Transportation; and CE Mark Certified Body name and Address. Removed: references to Manual Activating Units; and Training Unit Scrubbers.

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04/23/15 Changed Training Unit – eliminated fake Scrubbers and clarified the method for doffing the unit.




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ADDENDUM This addendum is for the Essex VRU+. The materials of construction and the design of the VRU+ are identical to the VRU with the exception that the VRU+ has a specially coated neck seal. This specially coated neck seal, provides additional protection of the unit from Sarin and Mustard Gases. The VRU+, along with all of the protection provided by the VRU, provides protection as detailed in Table 1 below.

*Chemical Warfare Agent Tested

Sarin (GB)

Mustard Gas (HD)

Test Conditions

50 L/min, 35 cycles/min

50 L/min, 35 cycles/min

**Test Concentration Level (mg/m3)

1000

200

***Max Allowable Concentration (mg/m3)

.008

.420

****Time to Max Allowable Concentration (minutes)

> 39

> 44

* Testing was conducted by U.S. Army SBCCOM (Edgewood Arsenal) ** Concentration Level External of Tested Units *** Concentration Level Allowable Internal of Tested Units **** Time to when Max Allowable Concentration was measured internally

Table 1: CHEMICAL WARFARE AGENT TESTING The information provided in this Technical Data Package also applies to the VRU+.




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GENERAL INFORMATION Intended Use: The Essex VRU is a self-contained protective breathing device intended for trained individuals in rescue and escape situations from fire, smoke, and toxic fumes, including chemical and hazardous material spills. Duration of Use: All emergency rescue and escape situations are different, and it is not possible to provide an exact duration time for all situations. Also, the size of the VRU user will affect usable life, with heavier individuals consuming oxygen more rapidly. However, for an average male, the following typical escape situations are useful in predicting how long the VRU will last:

* Sitting, waiting to be rescued Up to 60 minutes * Waiting 17 minutes to be rescued, then rapid evacuation Up to 21 minutes * Moderate walking (3 mph) Up to 18 minutes * Rapidly walking, on a flat, out of a building Up to 8 minutes * Rapidly walking up 15 flights of stairs Up to 3 minutes Extensive testing of the VRU under different escape situations was carried out at Penn State University and the Delaware State Fire School. Figure 1 - shows a typical situation where a person escapes by rapidly climbing flights of stairs to get above the emergency situation, perhaps to a rooftop. Note that in spite of heavy oxygen use from the moment of donning the hood, the oxygen level still climbs to near 40%. Because of the heavy workload, carbon dioxide builds up quickly and becomes the limiting factor in the duration of the VRU. At the end of three minutes, during which time the person climbed 15 flights of stairs, the carbon dioxide concentration inside the hood rose to nearly 6%, which would be high enough to cause the person to remove the hood.

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10

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50

60

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0 1 2 3

% Oxygen

% Carbon Dioxide

Time (min)

VRU Performance Climbing 15 Flights of Stairs

% CO2

% O2

Figure 1: VRU Performance Rapidly Climbing Stairs




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Figure 2 - is a graphical representation of actual interior hood conditions while a victim, with the VRU on, is sitting, waiting to evacuate. After help has arrived to assist him or her from the building, the victim has ample protection remaining to quickly flee from the scene of the emergency. In this situation, carbon dioxide has built up to 5.5%. High levels of carbon dioxide will be detected by the body's natural aversion, producing a feeling of high anxiety. This is an automatic signal it is time to remove the VRU.

VRU Performance Sitting, Then Evacuation

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Time (min)

% C

arb

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xid

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% O

xy

ge

n% CO2

% O2

Figure 2: Duration of the VRU while the User is Seated, waiting to Evacuate

Figure 3 - depicts the same person, seated with the VRU on, possibly trapped in a contaminated environment. Note the duration of protection is approximately one hour. The oxygen concentration has fallen to near 20%, the same as found in ambient air, and is continuing to decrease. Whereas high levels of carbon dioxide will be detected by the body’s natural aversion, low levels of oxygen will be easily recognized because the hood will no longer be inflated, and the hood film will be begin to press around the face of the user. In this situation, a VRU will provide ample time for a trapped user to sustain breathing until he or she can be reached.




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0

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0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60

% Oxygen

% Carbon Dioxide

Time (min)

VRU Sitting Waiting to be Rescued

% CO2

% O2

Figure 3: VRU Performance Sitting, Waiting for Rescue

The tests conducted at Penn State University were simulations of escape situations, performed in a laboratory where constant gas monitoring and accurate workload measurements could be made. SIZE

7 1/2 in. x 9 1/2 in. x 2 in. WEIGHT

1 1/2 pounds PACKAGING OF UNIT FOR STOWAGE

The VRU is folded and vacuum sealed inside a multi laminate, moisture/vapor resistant, barrier pouch, then packaged inside a rugged fabric carrying/stowage case. The case has accommodations for belt mounting as well as a carry strap, and a clear window for inspecting pertinent serviceability information. PACKAGING OF UNIT FOR TRANSPORT In the event a unit has to be shipped from one location to another the fabric carrying/stowage case is to be placed into a one (1) pack, corrugated cardboard box the unit was provide in and taped closed with 3” wide, clear packing tape. The one (1) pack box is to be over packed into a multipack, corrugated cardboard box the unit was provided in and taped closed with 3” wide,




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clear packing tape.

Shipping instructions will vary depending on mode of shipment.

(a) For domestic or international air shipments:

(i) Bill of lading description (Ref. Figure 21 below for an example of a complete shipper’s declaration for dangerous goods):

Life saving appliances, not self-inflating, UN3072

(ii) Hazard labeling (IATA/ICAO): three hazard labels are required:

Miscellaneous Class 9

(iii) Hazard Marking (IATA/ICAO):


(b) For domestic highway shipments:

(i) Bill of lading description:


(ii) Hazard labeling (DOT): None (iii) Hazard Marking (DOT):


Proper Shipping

Name

Class or Division

UN or ID Number

Subsidiary Risk

Net Quantities

Packing Instructions

Life saving appliances, not self-

inflating, UN3072

9 UN3072 __* x 0.144 kg 955

* Enter number of units shipped to calculate total net quantity.

Example of Complete Shipper’s Declaration for Dangerous Goods

Figure 4




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SHELF LIFE

10-years 6-months from the Date of Manufacture DONNING

Less than 15 seconds, from retrieval through donning. CE MARK CERTIFIED BODY The VRU/VRU+ is CE Mark certified by: BSI Group (0086), MK5, 8PP, UK STATEMENT OF WARRANTY FOR VICTIM RESCUE UNIT (VRU) AND VICTIM RESCUE UNIT – PLUS (VRU+) Essex Industries dba Essex PB&R Corporation warrants that: (1) The Essex Victim Rescue Unit (VRU) and Victim Rescue Unit - Plus (VRU+) (hereinafter referred to as the “unit”) will remain free from defects in material and workmanship, whether patent or latent, for up to the replace by date which is a period of ten (10) years and six (6) months from the date of manufacture when properly stowed in containers supplied or approved by Essex Industries. For those units equipped with a humidity indicator, the loss of vacuum in the inner packaging does not render the unit unserviceable. Units with barrier pouches that have lost vacuum remain serviceable as long as the humidity indicator remains blue. Although if a unit is found to have a damaged barrier pouch, e.g. cut, puncture or other damage, the unit should be pulled from service and sent back for repair at the customer’s expense. The liability of Essex Industries dba Essex PB&R Corporation for any defect in any unit, and the sole and exclusive remedy of the buyer, shall be limited to the repair or replacement of the defective unit, or a refund of the original purchase price (pro-rated in proportion to the ten (10) year and six (6) month warranty) at the sole discretion of Essex Industries dba Essex PB&R Corporation . The obligation to repair, replace, or provide a pro-rated refund shall terminate ten (10) years and six (6) months after the date of manufacture of the unit. This warranty is in lieu of all other warranties and representations, expressed or implied, and all other obligations and liabilities of Essex Industries dba Essex PB&R Corporation. Correction of defects, in the manner and for the period of time provided above, shall constitute fulfillment of all liabilities of Essex Industries dba Essex PB&R Corporation whether based on warranty, tort, contract or otherwise. Under no circumstances shall Essex Industries dba Essex PB&R Corporation be liable for any punitive, special, incidental or consequential damages. This warranty shall not apply to any unit that has been stowed in an unauthorized container, which has been repaired or altered by anyone other than Essex Industries dba Essex PB&R




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Corporation, or which has been subject to misuse due to negligence or accident, or the failure to use the unit in accordance with the Product’s Manual supplied by Essex Industries dba Essex PB&R Corporation. THE FOREGOING WARRANTIES ARE IN LIEU OF ALL WARRANTIES, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY, NON-INFRINGEMENT, OR FITNESS FOR A PARTICULAR PURPOSE, AND OF ANY OTHER OBLIGATION ON THE PART OF ESSEX INDUSTRIES DBA ESSEX PB&R CORPORATION. OXYGEN The VRU is a closed circuit rebreather system. Oxygen flows into the hood, is breathed and rebreathed by the user. The oxygen concentration inside the hood may reach 60%, depending on workload, and will then decrease for the duration of use. Oxygen flow is initiated by semi-automatic activation (see Oxygen System on page 13). Oxygen was selected as the breathable atmosphere because of weight and volume considerations. During respiration, oxygen is removed from the air and converted to carbon dioxide, then exhaled back into the air. If compressed air were used instead of oxygen, the air inside the hood would need to be constantly replenished to maintain the oxygen content at a life-supporting level. Because the VRU uses aviator’s grade oxygen, the exhaled air can be rebreathed once the carbon dioxide is removed. A typical industrial escape hood that relies on compressed air contains 350 L at 3,000 psig. The VRU contains 18 L of oxygen at 3,000 psig. The typical industrial escape hood weighs over 6 pounds. The VRU weighs just 1 1/2 pounds. CARBON DIOXIDE Carbon dioxide is a natural byproduct of respiration. Because the VRU is a closed circuit system, it is necessary to remove the carbon dioxide that builds up inside the hood. This is accomplished with a unique, patented passive scrubber. The average carbon dioxide concentration will be kept below 4% for the duration of use, but may reach a momentary peak of 7%. PROTECTION FACTOR Users of the VRU are not affected by carbon monoxide and the other toxic gases produced in a fire, nor do chemical fumes from the spill of hazardous materials affect them. Unlike a filter mask, which must clean the poisonous outside air to make it fit to breathe, the VRU provides its own source of clean breathable air. The measure of cleanliness of the breathable air is called Protection Factor. A Protection Factor of 20, for example, means that the air inside the hood is 20 times cleaner than the air outside the hood. NIOSH requires a Protection Factor of 20. The Protection Factor for the Essex Industries




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dba Essex PB&R Corporation line of products, using the same hood/neck seal design, is at least 260, or 13 times better than required by NIOSH. Protection Factor for this design was determined independently by Lawrence Livermore National Laboratories, a unit of the US Department of Energy. Twenty-one human subjects took part in the Protection Factor test, the results of which are summarized in Table 1 below. Both men and women took part in the test, with neck sizes that ranged from 12 1/2 to 17 1/2 inches. Two of the women in the test had long hair, which protruded between the neck seal and the person's neck. The tests were performed on an Essex Industries product, the Crewmember PBE; a FAA TSO-C116 certified larger version of the VRU. Because the materials of the construction and the design of the neck seal are identical between the PBE and the VRU, the Protection Factors for the VRU should be comparable to the PBE. In the test, the subject donned the PBE and entered a chamber with a known concentration of a non-toxic gas. While the test subject performed a programmed workload on a treadmill, the amount of test gas that entered the hood was constantly measured and compared to the known concentration in the test chamber. Protection Factors for the 21 test subjects ranged from 263 to 5,882.

Test # Sex M/F

Weight (lbs.)

Neck Size inches

Age Yr.

Eyeglasses Yes or No

Hair Long/Short

Protection Factor

1 M 194 16.25 54 NO Short 312

2 M 168 15.00 26 NO Short 263

3 M 191 15.75 56 YES Short 312

4 M 165 15.50 56 NO Short 435

5 M 221 17.00 45 NO Short 303

6 M 150 14.75 40 YES Short 2380

7 M 150 14.75 47 YES Short 2041

8 M 195 16.00 37 NO Short 2128

9 M 161 14.50 51 NO Short 2857

10 M 157 13.50 41 YES Short 2128

11 M 155 13.75 28 NO Short 1389

12 M 147 14.00 52 YES Short 5882

13 M 158 15.00 37 YES Short 1887

14 M 173 15.00 35 YES Short 2778

15 F 151 12.50 28 NO Short 1471

16 F 138 12.25 32 NO Long 3448

17 F 132 12.50 28 YES Long 1408

18 M 158 15.00 36 YES Short 1695

19 F 168 13.50 25 YES Short 2941

20 M 155 15.00 32 NO Short 2083

21 M 198 17.50 34 NO Short 2174

Table 2 - Protection Factor Test Results




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SIZING/FITTING One size fits all adults with an 11 to 19 inch neck without adjustment. Some protection is afforded to children, though inward leakage of contaminated air may occur around the neck seal. The VRU may also be used with infants by bringing the neck seal around the infant's waist with its arms tucked up inside the hood. VISIBILITY 360 degrees INSIDE HOOD TEMPERATURE

Temperature inside the VRU may increase to 40C (104F) during the duration of use, when the

outside temperature is 20C (68F). The harder the person works of course, the quicker the temperature increases. When the test subject simulated rapidly climbing 15 flights of stairs in

Figure 1, the temperature inside the hood increased from 23C (73F) at the beginning of the test

to 36C (97F); and when sitting, then escaping from the emergency situation as shown in Figure

2, the temperature rose to 33C (91F) during the sitting portion of the test, then increased to

38C (100F) during the escape phase. OPERATING TEMPERATURE RANGE

The VRU may be used with temperatures between 50C (122F) and -15C (+5F). STOWAGE TEMPERATURE RANGE

The VRU may be stored at temperatures between 85C (185F) and -30C (-20F). INSPECTION Inspection of the VRU is essential for proper safety. Essex Industries provides for a hands-free inspection of all units. Visual inspection to verify the expiration date has not been exceeded and the Humidity Indicator remains blue is all that is necessary to confirm the VRU is serviceable. It is neither necessary nor advisable to remove the VRU from the outer fabric package for inspection. THERMAL PROPERTIES Fire Resistance The VRU can withstand a 1000°C (1,832°F) flame for five seconds without burning through.




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Testing of thermal properties was conducted on the Essex Crewmember PBE; a FAA TSO-C116 certified larger version of the VRU. As all materials of construction are the same between the PBE and VRU, the results of these thermal tests should be considered identical for the VRU. The flame resistance test was run by the Engineering Test Center of the E.I. DuPont Co., and witnessed by a representative of the Federal Aviation Administration. As specified by the FAA, an array of gas burners was set up to provide a 1000°C (1832°F) flame at the level of the PBE hood. The hood was inflated with a gas mixture of 75% oxygen and 25% nitrogen, and the hood was moved slowly through the flame, being exposed to the flame for five seconds. The hood was passed through the flame three times, exposing the front, right side and left side. Some degradation of the film, in the form of wrinkling and discoloration, occurred, but there was no flame breakthrough of the PBE hood. Dripping Plastic and Tar Plastics and tar dripping onto the VRU will have no adverse effects below 200°C (392°F). This test was also conducted at DuPont’s Engineering Test Center. An Omegaprobe® polymer

crayon, which is certified to become molten at 204°C (399°F) 1%, was allowed to drip in three separate places on the Essex hoods, inflated with 75% oxygen and 25% nitrogen. No penetration of the molten polymer was observed. Radiant Heat Flux The VRU can withstand radiant heat of 1.0 BTU/sq. ft. for up to 60 seconds. This test was conducted at DuPont’s Engineering Test Center. An ASTM approved radiant heat source was used to produce radiant energy of 1 BTU/sq. ft. at the surface of the hood, inflated over a head form. The hood was exposed to this radiant heat source for 60 seconds, first frontally, then the right side, left side and back. No damage to the hood occurred. MATERIALS OF CONSTRUCTION Hood The hood is a multi-layer design of polyimide film and PFA film, which provides excellent resistance to most chemicals. It measures 13 inches at its circular base, and is 19 inches high, with an internal volume of approximately 23 liters (slightly less than 1 cubic foot). Neck Seal The neck seal is a high strength, highly elastic silicone rubber design that fits all adult sizes with




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an 11 to 19 inch neck without adjustment. Some amount of respiratory protection will be provided for small children, though the Protection Factors may not be as great as shown above. The neck seal can be brought around an infant’s waist to provide respiratory protection. Oxygen System One cylinder of compressed aviator’s grade oxygen at 3,000 psig, with an equivalent ambient volume of approximately 18 liters, is mounted on the bottom side of the neck seal. To facilitate semi-automatic activation (these units have the red ball tethered thru the side of the hoods skirt) - the oxygen cylinder is activated in the process of donning the hood. Prior to donning the unit, the user grabs the oxygen cylinder in one hand and the red ball, which is tethered thru the opposite side of the hood, with the other hand and pulls apart.

The force required to activate the flow of oxygen is approximately 12 pounds. Even though the flow of oxygen stops after five minutes, there is sufficient oxygen inside the hood for the escape situations shown in the “Duration of Use” section on page 5. The oxygen bottle is protected from over pressurization by a unique rupture disk design. Carbon Dioxide Scrubber Three rectangular panels of dustless lithium hydroxide are arranged around the interior base of the hood to maintain the carbon dioxide inside the hood to below an average of 4% for the duration of use.




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PERFORMANCE The VRU is intended to be used by trained personnel in emergency rescue and escape situations from fire, smoke and toxic fumes, including chemical and hazardous material spills. The VRU is not a replacement for a firefighter’s SCBA, but is designed as a stand alone device to help the firefighter or first response person to assist a civilian victim in an emergency escape or rescue situation. The firefighter or first response person may also use it if he or she becomes trapped in an emergency situation without a source of clean, breathable air. The duration of use is based on an average size male. Oxygen consumption and carbon dioxide production vary by body size, the duration of use will be somewhat less for large persons and somewhat longer for smaller persons. Duration of the VRU is defined as when the oxygen inside the hood drops below 18% or the carbon dioxide level exceeds 7%. The user will know when the oxygen concentration has dropped below 18% because the hood will collapse and press on the user’s face. A high concentration of carbon dioxide creates a feeling of high anxiety in the user, warning that CO2 is building up to potentially dangerous levels. CAUTION: FAILURE TO REMOVE THE HOOD WHEN OXYGEN LEVELS DROP BELOW 18% MAY RESULT IN SUFFOCATION AND DEATH. The VRU is an excellent aide in escape or rescue from a chemical spill (it is not meant as a replacement for HAZMAT suits for cleaning spills) because of the self contained breathable clean air, and because of the high resistance of the hood to most chemicals. Testing of the Essex VRU was done by independent test houses including: Penn State University; and Lawrence Livermore National Laboratories. VRU DONNING PROCEDURE For Semi-automatic activation units, see Figure 4, on page 18 and the Donning Steps detailed on page 19 of this manual. VRU TRAINING UNIT The VRU Training Units are designed specifically for training purposes. They look, feel, and operate like the standard VRU. However, the VRU training unit can be used more than once, and does not need to be vacuum-packed. The differences in the VRU training units are as follows:

1) The oxygen cylinder does not contain oxygen and is marked “EMPTY”.




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2) The outside of the metallized film of the hood shell is labeled “TRAINING UNIT”.

3) The hood shell has ventilation holes to prevent suffocation.

4) The activation valve is specifically designed to simulate the required pull force and activation of the live unit, and can be reused. Since the oxygen cylinder is empty, there will be no sound of oxygen flowing when the valve is activated.

5) There are no Carbon Dioxide Scrubbers in the training unit.

Operating Steps

1) For sanitary purposes, prior to donning the VRU Training Units, an optional Disposable Training Liner may be worn. These Disposable Training Liners, P/N CP3205 can be ordered from Essex Industries.

A) The Disposable Training Liner, if used, is placed over the trainees head. Adjust the

liner so that its top filter paper edge is horizontal and positioned over the tip of the nose, and the crease is centered vertically in the middle of the face (see figures below).

B) Pull the liner lightly against the nose and face, and fold over a pleat onto the back

of the head, then secure with cellophane tape (see figures below).

2) General Sequence of Steps for Semi-automatic Activation Units

A) Remove VRU Training Unit from its stowage pouch and unfold.

B) Hold hood with neck seal (silver end) facing you. Pull red ball with one hand while holding the empty oxygen cylinder with the other hand. The red ball and lever




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must pull free of the oxygen bottle. This simulates activating the oxygen system for the hood.

C) Place both hands inside the neck seal opening, palms facing each other, and

spread the neck seal open.

D) Pull the hood over your head and neck with the neck seal stretched open. Breathe normally.

E) Remove the hood by inserting hands, with palms facing front of neck, up and into

the neck seal opening and pulling neck seal opening up and over head. Discard the liner when the practice session is complete.

Cleaning and Disinfecting Clean and disinfect the VRU training unit periodically so it will continue to work effectively.

1) Moisten a cotton cloth with 50-50 mixture of alcohol and water. 2) Wipe all inside and outside surfaces of both the hood shell and the neck seal. Let dry.

(approx. 15 minutes).

Handling and Storage The VRU training unit is to be re-packed after it has been cleaned and disinfected.

1) Lay the unit down on a clean, flat surface with the neck seal closest to you. The oxygen cylinder should be closest to the flat surface.

2) Snap the spring clip, which is tethered to the red ball, back onto the oxygen cylinder’s

dummy valve.

3) Fold the hood from right to left in half.

4) Fold the hood into approximate thirds, using an “S” fold pattern.

5) Place the folded training unit into its trainer stowage pouch.

6) The VRU training unit is now ready for reuse and/or stowage.




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ESSEX SEMI-AUTOMATIC VRU DONNING ILLUSTRATIONS

1. Open flap on stowage pouch

5. Pull red ball with one hand while holding oxygen cylinder in other hand.

2. Remove bag from stowage pouch.

6. Spread neck seal open with palms facing towards each other.

3. Tear open bag by pulling red tape.

7. Pull the VRU over your head.

4. Remove the VRU hood and unfold.

8. Remove hood after you are clear of hazard or when instructed by trained personnel.

Figure 4: Semi-Automatic Donning Illustration




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Essex Semi-Automatic VRU Donning Steps

1. Open flap on stowage pouch.

2. Remove bag from stowage pouch. 3. Tear open bag by pulling red tape. 4. Remove hood from pouch and unfold. 5. Hold hood with neck seal (silver end) facing you. Pull red ball with

one hand while holding the oxygen cylinder with the other hand. The red ball and lever must pull free of the oxygen bottle.

6. Place both hands inside the neck seal opening, palms facing each

other, and spread the neck seal open. 7. Pull the hood over your head and neck with the neck seal stretched

open. Breathe normally. CAUTION: IF YOU DON’T HEAR A HISSING SOUND AFTER THE RED BALL HAS BEEN PULLED AND /OR THE HOOD DOES NOT START TO INFLATE, IMMEDIATELY REMOVE THE VRU FROM YOUR HEAD.

8. Remove hood after you are clear of the hazard, when instructed, or

when the hood collapses and touches your face (indicating that the oxygen concentration is low).




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WARNING THE ESSEX VRU AND/OR VRU+ IS INTENDED TO BE USED ONLY BY, OR UNDER THE SUPERVISION OF, AN INDIVIDUAL TRAINED AND QUALIFIED IN THEIR USE. IMPROPER USE OF THIS EQUIPMENT MAY RESULT IN SERIOUS PERSONAL INJURY OR DEATH. IMPROPER USE INCLUDES, BUT IS NOT LIMITED TO, USE OTHER THAN IN ACCORDANCE WITH THE INSTRUCTIONS AND LABELS PROVIDED.

VICTIM RESCUE UNIT (VRU) / VICTIM RESCUE UNIT PLUS (VRU+) · 2016. 4. 13. · DBA Essex PB&R...

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Transcript of VICTIM RESCUE UNIT (VRU) / VICTIM RESCUE UNIT PLUS (VRU+) · 2016. 4. 13. · DBA Essex PB&R...