S ?AL D

EVALUATION OF BAUER K220

I HIGH PRESSURE BREATHING AIR COMPRESSOR

GEORGE D. SULLIVAN

MARCH 1990

IBUTION STATEMENT A: Approved for public release;

distribution is unlimited.

NAVY EXPERIMENTAL DIVING -UNIT

'a * ~ ELECTE

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DMTB-NTON MUMTMTA

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DEPARTMENT OF THE NAVYNAVY EXPERIMENTAL DIVING UNIT

PANAMA CIM FLORIDA 32407-5001 IN REPLY REFER TO:

NAVSEA Task 89-11

NAVY EXPERIMENTAL DIVING UNIT

REPORT NO. 6-90

EVALUATION OF BAUER K220HIGH PRESSURE BREATHING AIR COMPRESSOR

GEORGE D. SULLIVAN

MARCH 1990

DISTRIBUTION STATEMENT A: Approved for public release;distribution is unlimited.

Submitted by: C eviewed by: A roved by:

G.D. SULLIVAN J . MCCARTHY ,J. HALWACHSGS-9 ( GqM-14 I, J C, U.S. NavyTest Director .- ,[perbaric Engineer Commanding Officer

C.'. SCHWARTZ

CAPT, MC, USN D T ICSenior Medical Officer

E-ECTE

J U 2 .9 DLCDR, CFFleet Projects Officer

K.A. HODINALT, USNActing Senior Projects Officer

.B. MCDONELL,' CDR, USN\'--xecutive Offr r

UNCLASSIFIEDSECURITY CLASSIFICATION OF THIS PAGE

REPORT DOCUMENTATION PAGEla. REPORT SECURITY CLASSIFICATION lb. RESTRICTIVE MARKINGS

UNCLASSIFIED

2a. SECURITY CLASSIFICATION AUTHORITY 3. DISTRIBUTION/AVAILABILITY OF REPORTDISTRUBUTION STATEMENT A: Approved for publicrelease; distribution is unlimited

2b. DECLASSIFICATION/DOWNGRADING SCHEDULE

4. PERFORMING ORGANIZATION REPORT NUMBER(S) 5. MONITORING ORGANIZATION REPORT NUMBER(S)NEOU Report #6-90

6a. NAME OF PERFORMING ORGANIZ. 6b. OFFICE SYMBOL 7a. NAME OF MONITORING ORGANIZATIONNavy Experimental Diving Unit (If applicable)

6c. ADDRESS (City, State, and ZIP Code) 7b. ADDRESS (City, State, and ZIP Code)Panama City, Florida 32407-5001

8a. NAME OF FUNDING/SPONSORING 6b. OFFICE SYMBOL 9. PROCUREMENT INSTRUMENT IDENTIFICATION NUMBERORGANIZATION (If applicable)

Naval Sea Systems Command DOC

8c. ADDRESS (City, State, and ZIP Code) 10. SOURCE OF FUNDING NUMBERSWashington D.C. 20362-5101 PROGRAM PROJECT TASK WORK UNIT

ELEMENT NO. NO. NO. ACCESSION NO.89_11

11. TITLE (Include Security Classification)BAUER K220 HIGH PRESSURE BREATHING AIR COMPRESSOR

12. PERSONAL AUTHOR(SO

SULLIVAN, David

13a. TYPE OF REPORT 13b. TIME COVERED 14. DATE OF REPORT (YearMonth'Day) 15. PAGE COUNT

FINAL March 1990 15

16. SUPPLEMENTARY NOTATION

17. COSATI CODES 18. SUBJECT TERMS (Continue on reverse if necessary and identifyFIELD GROUP SUB-GROUP by block number)

ABSTRACT (Continue on reverse if necessary and identify by block number)

n response to reference (1) and as outlined in reference (2) Navy Experimental Diving Unit(NEDU) tested the BAUER K220 high pressure, breathing air compressor from November 14 thru 21, 1989.The purpose of this test was to determine if the equipment was suitable for use by the United StatesNavy (USN) diving community and if so, added to the Approved for Navy Use (ANU) Procurement List.

The BAUER K220 met manufacture's specifications for quantity of air produced with a quality whichmet or exceeded purity standards in reference (3). The design and engineering was determined to beadequate. With the inclusion of the recommendations in section V the BAUER K220 compressor isconsidered suitable for USN requirements for compressors of this size and type.

20. DISTRIBUTION/AVAILABILITY OF ABSTRACT 21. ABSTRACT SECURITY CLASSIFICATION

Ij UNCLASSIFIED/UNLIMITED SAME AS RPT. OTIC USERS

22a. NAME OF RESPONSIBLE INDIVIDUAL 22b. TELEPHONE (Include Area Code) 22c. OFFICESYMBOL

DD FORM 1473, 84 MAR 83 APR edition may be used SECURITY CLASSIFICATION OF THIS PAGEuntil exhausted.All other editions are obsolete. UNCLASSIFIED

CONTENTS

Pae No

I. INTRODUCTION .............................................. I

II. EQUIPMENT DESCRIPTION ................................... 1-2

III. TEST PROCEDURE ............................................. 8

A. ENDURANCE TEST ......................................... 8

B. CHARGE RATES ................. ....................... 8

C. OIL CONSUMPTION ........................................ 8

D. AIR SAMPLING ........................................... 8

E. MAINTENANCE ............................................ 9

IV. RESULTS ................................................ 9-10

V. RECOMMENDATIONS ........................................ 10-11

VI. CONCLUSIONS ............................................... 11

REFERENCES .................................................... 12

APPENDIX A - Manufacture's Technical Specifications .......... A-I

APPENDIX B - Test Plan ......................................... B-I thru B-7

APPENDIX C - Test Log .......................................... C-I thru C-6

APPENDIX D - Air Sample Results ............................... D-1 thru D-3

Accession ForNTIS IA&IDTIC TAP 0

Unaranunced 0

Just riction,

Ant1'lb11ty Codes

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ILLUSTRATIONS

Figure No. Page No.

1 Front View (Flyaway side) 3

2 Rear View (Fan-wheel side) 4

3 Right hand side, viewed from flywheel 5

4 Left hand side, viewed from flywheel 6

5 Air flow diagram 7

iii

I. INTRODUCTION

In response to reference (1) and as detailed in reference (2), the BauerK220 compressor was tested by NEDU. The test was to determine if the

compressor discharged suitable breathing air and had a service life whichsatisfied the requirements for divers air supply compressors throughout theNavy. Other material variations were also evaluated and are listed as

considerations in Section V.

Highly portable divers air compressors are designed to have high pressurewith relatively how volume outputs. Divers require low pressure with highvolume. The average divers high pressure air compressor is connected to largevolume high pressure air storage flasks to meet this need. In normaloperations the high pressure air is reduced to a lower pressure to act as a

breathing media for divers. As this is accomplished, the pressure gradually

reduces in the storage flasks. The compressors tend to run on a continousbasis as the diving day continues because the demand is usually greater thanthe supply. At the end of the diving day or when air requirements are reduced,the compressors will exceed the demand and fill the air flasks.

There are various methods of testing compressor capacities. For the purposesof this compressor test, NEDU chose compressor testing consisted of chargingfrom 0 to 2500 psig daily then opening the vent and maintaining 2000 to 2500psig for continuous run. This method more closely simulated the use acompressor would experience in the field. Additionally during the continuousrun, random charge rates were taken from 2000 to 2500 psig. The compressor wasoperated a total of 50 test hours. The testing included subjective evaluationof the system operation but did not include detailed mechanical review of theindividual components of the system.

II. EQUIPMENT DESCRIPTION

The BAUER K220 high pressure, breathing air, compressor (Figures I thru 4)is a four stage, three cylinder design. The 1st and 2nd stage are housed inone common stepped cylinder. The three cylinders are arranged in a "W"configuration. The lst/2nd stage cylinder is positioned vertically, the 3rdstage cylinder to the right, viewing from the flywheel. The 4th stage cylinderat the left side forms the second leg of the W arrangement.

The lst/2nd stage and 4th stage cylinders are lubricated by means of theforced-fed lubrication system, the 3rd stage cylinder is splash-lubricated.The compressor requires approximately 8 quarts (US) of lubricating oil. Themanufacturer recommends that only specific lubricants be used. These oils arenot stocked in the Federal Supply System.

The K220 compressor block is used as a standard in the breathing air aswell as in the industrial high pressure compressor units. It is particularlysuitable for continuous operation because of its rugged design and thecorrosion resistant intermediate filter and cooler assemblies.

I

The prime mover is a TOSHIBA 25 horse power, three phase 460 volt, 1765RPM electric, motor, ser #9306796C, (see recommendation a). Rotational torqueis transferred to the compressor by triple "vee" belts.

Filtration was accomplished by an intake filter cartridge,interfilters/moisture separators downstream of the 2nd and 3rd stages, a 4thstage water separator and a Pall Trinity filter immediately upstream of thecharging whip. The automatic condensate drain unit drains the intermediatefilters after the 2nd and 3rd stage, and the oil and water separator after the4th stage every 15 minutes.

A pressure maintaining valve/non-return valve is provided down stream fromthe filter system to ensure that pressure build up occurs in the filters duringstart up and initial compressor air delivery. This achieves constant, optimumfiltering, moisture separation and prevents compressed air from returning fromthe charged air storage tanks to the compressor during unit shut down.

All four stages of the compressor block are protected by safety reliefvalves.

Figure 5 provides an air flow disgram of the compressor and filter system.For these tests the BAUER final filter package was replaced with a Paul Trinityfilter which is also available from BAUER upon request.

2

1015

Fig. 1 Front View (Flywheel side)

I Interfilter 3rd/4th stage 6 Flywheel

2 Oil and water separator 7 Intake filter

3 Safety valve, 1st stage 8 Oil filler neck

4 Safety valve, 3rd stage 9 Cylinder 3rd stage

5 Final pressure safety valve 10 Cylinder 4th stage

3

Fig. 2 Rear View (Fan-wheel side)

1 Inter-cooler lst/Znd stage 4 Fan-wheel

2 Inter-cooler 2ndl3rd stage 5 Safety valve, Znd/3rd stage

3 Inter-cooler 3rd/4th stage 6 Inter-filter 2nd/3rd stage

and after-cooler 7 Oil filter

00 00

6

5

Fig. 3 Right hand side, viewed from flywheel

1 Cylinder 3rd stage 5 Safety valve, 3rd stage

2 Inter-filter 2nd/3rd stage 6 Cylinder Ist/2nd stage

3 Safety valve, 2nd stage 7 Intake filter

4 Inter-filter 3rd/4th stage 8 Fan-wheel

\ , 3

2 q2

4

12

13 5

10

11 9 14 8

Fig. 4 Left hand side, viewed from flywheel

1 Fan-wheel 9 Condensate drain valve, 3rd stage2 Intake filter 10 Condensate drain valve, 2nd stage3 Flywheel 11 Manual condensate drain valve4 Cylinder 4th stage 12 Condensate manifold

5 Oil and water separato, 13 Condensate outlet6 Final pressure safety valve 14 Oil drain plug

7 3/ 2 -way solenoid valve 15 Air outlet

8 Condensate drain valve, 4th stage

17 92 o

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14 Safty vave 2n stag 3 odnaedan av n tg

Fig. 5 AIR FLWDIAGRAM

1 Intake filter 21 Pressure maintaining valve2 Cylinder 1st stage 22 Non-return valve3 Cylinder 2nd stage 23 Air outlet; connector for tube outer4 Cylinder 3rd stage dia. 10 mm5 Cylinder 4th stage 24 Pressure switch, intermediate6 Inter-cooler lstf2nd stage pressure lst/2nd stage7 Inter-cooler 2nd/3rd stage 25 Pressure switch, intermediate8 Inter-cooler 3rd/4th stage pressure 2nd/3rd stage9 After-cooler 26 Pressure switch, intermediate10 Inter-filter 2nd/3rd stage pressure 3rd/4th stage11 Inter-filter 3rd/4th stage 27 Temperature switch 4th stage12 Oil and water separator 28 Final pressure switch.13 Safety valve 1st stage 29 3/2-way solenoid valve14 Safety valve 2nd stage 30 Condensate drain valve 2nd stage15 Safety valve 3rd stage 31 Condensate drain valve 3rd stage16 Safety valve 4th stage 32 Condensate drain valve 4th stage17 Pressure gauge, intermediate 33 Manual condensate drain valve

pressure lst/2nd stage 34 Condensate manifold18 Pressure gauge, intermediate 35 Oil pump

pressure 2nd/3rd stage 36 Oil filter29 Pressure gauge, intermediate 37 deleted

pressure 3rd/4th stage 38 Oil pressure gauge20 Pressure gauge, final 39 Oil pressure switch

pressure 4th stage

7

III. TEST PROCEDURE

The compressor was set up in accordance with the manufacturer's

instructions. A Cole Palmer model 8502-14 temperature monitor and Yellow

Springs Instruments 700 series thermistor probes were attached to measure

compressor discharge and ambient temperatures. A safety line was installed on

the charging whip. The unit was placed in an exterior work area, open to

ambient temperature but protected by an awning from direct weather. APPENDIX B

contains the complete test plan and the pass/fail criteria used during the

evaluation. APPENDIX C is the test log and contains the recorded data.

A. ENDURANCE TEST

The compressor was operated daily to charge four 2250 cubic inch

(floodable volume) cylinders. The four cylinders were interconnected to

simulate one large 9000 cubic inches air flask. After a charge of 2500 psig on

the flasks the vent was opened to allow the compressor to run continuously at

2000 to 2500 psig discharge. A total of 50 hours of operation were logged on

the compressor. The following parameters were recorded:

1. Date

2. Time

3. Total meter hours

4. Total test hours

5. Oil level6. Oil pressure

7. All four stage pressures

8. Discharge air temperature

9. Ambient air temperature10. Flask size

11. Flask pressure

B. CHARGE RATES

The volume of air delivered and the time to achieve that volume was logged

on the average of three times per day and is recorded in Appendix C.

C. OIL CONSUMPTION

At the beginning of the test the oil sump level was measured as full. Oil

level was monitored during operations and consumption logged. An oil change

was accomplished at 25 hours of compressor operation. The oil used for the

change was Anderol 750 (as per manufacturer's recommendations).

D. AIR SAMPLING

Air samples were taken from the compressor discharge at hours 1, 25 and 50

and sent to the NCSC Laboratory, Code 5130, for purity analysis.

8

E. MAINTENANCE

Scheduled maintenance was performed in accordance with the manufacturer's

instructions and consisted of a lubricating oil and filter change at 25 total

hours of operation. The oil sump level was checked prior to start-up each day.

IV. RESULTS

A. ENDURANCE TEST

The compressor was successfully operated a total of 50 hours to insure

proper functioning and to draw air samples.

B. CHARGE RATES

The data collected provided a complete operational and maintenance log for

this test and was the basis for computing and evaluating all the test results.

Compressor charge rates for the air cylinders used during the test were as

follows:

TIME TOTAL VOLUME CHARGE RATE

MINIMUM: 4 MINUTES 53 SECONDS 177 CUBIC FEET 36.2 SCFM

MAXIMUM: 4 MINUTES 28 SECONDS 177 CUBIC FEET 39.6 SCFM

AVERAGE: 4 MINUTES 42 SECONDS 177 CUBIC FEET 37.65 SCFM

NOTE: Differences in maximum and minimum charge rates were the result of gauge

fluctuation that caused difficulty in reading the minute pressure indicationson the gauge used for this particular test.

The majority of the temperature differentials between ambient and compressor

discharge temperatures were 12 to 17 degrees Fahrenheit. The maximum recordeddifferential temperature was 22 degrees Fahrenheit. This minor carry over of

the heat of compression is not great enough to have significant effect on the

resulting air cylinder temperature.

C. OIL CONSUMPTION

During the test the compressor consumed one quart of oil. Average

consumption was 0.04 pints per hour and is considered acceptable.

D. AIR SAMPLING

The results of the air samples is shown in APPENDIX D. All samples were

vithin limits established by reference (3).

9

E. MAINTENANCE

The Bauer K220 compressor unit was easily maintained and only minorproblems were encountered. The maintenance manual for the compressor isconsidered adequate.

NOTE: During start up on day 2 (test hr 7) with an ambient airtemperature of 51 degrees Fahrenheit, a problem was encountered with the lowoil pressure switch. The switch had to be re-adjusted to a lower cut offpressure. This allowed continuous running until the oil sufficiently warmed upand the 40 second timed relay delay could shift to automatic. (Seerecommendation B.)

NOTE: At 28 hours into the test the air pressure switch failed tofunction at the preset pressure and had to be re-adjusted. This is considered

to be a minor problem. Whereas the operating procedures would take intoconsideration the fine tuning of the pressure switch prior to operation.

V. RECOMMENDATIONS

The following are recommended considerations that the user should be aware of

when purchasing this compressor.

Depending on the specific use and environment it may be prudent to have the

manufacturer make the recommended changes prior to purchasing the compressor.

A good example of this would be if the compressor was going to be used inside aprotected area the recommendations would not apply as much if it was going to

be used out in the weather.

These are only considerations and not requirements.

RECOMMENDATION

A. Primary power source be changed to meet specifications standards ofMIL-M-17060-E Amendment 1.

JUSTIFICATION

In accordance with reference 5 to meet Navy specifications the primemover, if electric, should be a Sealed insulation system (service A use) in

accordance with MIL-M-17060 E, Amendment 1.

10

RECOMMENDATION

B. The oil sump heating device be installed in all US Navy purchased BAUER

K220 compressors.

JUSTIFICATION

Since 51 degrees is a moderate temperature, it is recommend that the oil

heating devices available from BAUER, be installed in BAUER K220 compressorspurchased by the US Navy.

RECOMMENDATION

C. The cadmium coated fittings be replaced with a suitable substitute.

D. JUSTIFICATION

Reference (4) states that cadmium coated fittings cannot be used insystems that exceed 400 degrees Fahrenheit or if the cadmium could come incontact with petroleum products. At this time the only authorized HP

compressor lubricant by the Navy is 2190-TEP.

VI. CONCLUSIONS

Evaluation of the BAUER K220 compressor revealed the following

1. The BAUER K220 compressor delivers acceptable breathing air at acharge rate and volume which meet's or exceeds the manufacture's

specifications.

2. The unit is sturdy, reliable and readily maintainable.

3. The operating and maintenance manuals for the compressor are

adequate.

4. The BAUER K220 compressor is suitable for use by the US Navy.

11

REFERENCES

1. NAVSEA Task 89-11; Testing of commercially available air compressorsfor divers use for ANU list.

2. Test Plan Number 89-48; Operational Evaluation of Divers High PressureAir Compressor.

3. NAVSEA 0994-LP001-9010, U S Navy Diving Manual Vol 2, Para 5.3.2 Airpurity standards.

4. Navy Publication No. S9AA-AA-SPN-010/GENSPEC of Jan 19, 1987. GeneralSpecifications for Ships of the Navy, Cadmium Fittings

5. MIL-M-17060 E, Amendment 1, Sealed insulated systems, (service A use).Navy specifications for compressor power source.

12

MANUFACTURE'S TECHNICAL

SPECIFICATIONS

Model K224J (mod. 3)

Operating pressure max. bar (psi) 350 (5,000)

Delivery /min (c.f.m.) 650...930 (23...33)

Speed min-1 980...1320

Power requirement kW 14.5...20.5

Req'd motor kW 15...22

No. of stages 4

No. of cylinders 3

Cylinder diameters mm (in.)

1st stage 130 (5.11)

2nd stage 130/110 (5.1/4.3)

3rd stage 36 (1.4)

4th stage 16 (.63)

Piston stroke mm (in.) 80 (3.15)

V-belt pulley diameter mm (in.) 450 (17.7)

V-belt profile 3 x SPA

Sense of rotation, viewing at flywheel ccw

Cooling system air

Lubricating system pinion gear driven

oil pump

Lube oil pressure bar (psi) 2...3 (28...43)

Lube oil capacity, approx. I (US qts.)(Imp.gal.) 8.0 (8.5) (2.1)

Intermediate pressures (approx. values at max. op. press.)

1st stage bar (psi) 3 (43)

2nd stage bar (psi) 13 (188)

3rd stage bar (psi) 68 (965)

Max. allowable inclination 100 to all sides

Condensate drain Automatically every

15 minutes

Weight kg (lbs.) 300 (660)

Air outlet tube dia. mm 10

DEPARTMENT OF THE NAVYNAVY EXPERIMENTAL DIVING UNIT

PANAMA CITY, FLORIDA 32407-5001 IN REPLY REFER TO:

NAVSEA Task 89-11

NAVY EXPERIMENTAL DIVING UNIT

STANDARD TEST PLAN

OPERATIONAL EVALUATION OFDIVERS HIGH PRESSURE AIR COMPRESSORS

TEST PLAN NUMBER 89-48

NOVEMBER 1989

Submitted: Reviewed: Approved:

SLLIVAN - J. McCARTHY J E. HALWACHS)G.~ M 1 CDR USN

e T or ,-rr Engineer -- mmanding Officer

H.L. PRUITTLCDR, USNSenior Projects Officer

J.B. McDONELL/ jCDR, USN

"Executive Officer

DISTRIBUTION: Codes 00, 01, 03, 05Original to Technical Library

RECORD OF CHANGES

Except as provided for herein, changes will be made only on the authority ofthe Commanding Officer, NEDU. A dark vertical line in the left-hand marginindicates the coverage of change.

CHANGE NO. AUTHORITY INSERTION SECTION INITIAL

B-2

TABLE OF CONTENTS

Pane

Record of Changes .............................................. 2

Table of Contents ............................................. 3

SECTION:

1. Introduction .......................................... 4

2. Test Parameters ....................................... 4

3. Preliminary Arrangements .............................. 5

4. Test Procedure ........................................ 5

5. Safety Rules and Emergency Procedures ................. 6

6. Termination Criteria .................................. 6

7. Personnel Requirements ................................ 7

8. Logistic Support................... ................... 7

9. Control and Safety of Systems ......................... 7

10. Post Test Arrangements ................................ 7

11. Report Production ..................................... 7

ANNEXES:

A Operational Test Log .................................. A-I

B-3

References:

(a) NAVSEA Task 89-11(b) NEDU Test Plan Number 80-37, Bauer Portable High Pressure Air

Compressor(c) NCSC Field Test Procedure SP80-13-0S6 for Testing Diving Air

Compressors(d) Bauer Compressors Instruction Manual OPM-4(e) Bauer Compressor Instruction Manual for the K220(f) NEDU Report 11-83, Evaluation of Bauer Mariner "D" High Pressure

Breathing Air Compressor

1. Introduction. This test plan provides a series of procedures forstandardized evaluation of commercially available divers high pressure aircompressors. The compressors will be evaluated and data compiled during thesetests to determine their suitability and reliability and eventual Approval forNavy Use (ANU).

Reference (a) directed NEDU to survey the commercial domestic market todetermine if currently available high and low pressure compressors areapplicable for fleet use. If applicable, procure compressor systems asrequired for evaluation. Make recommendations for inclusion on ANU listing.

2. Test Parameters. Evaluation of the compressor will be conducted asfollows:

a. Conduct inspection of compressor using manufacturers instructionmanuals treferences (d) and (e)] to ensure all parts and material are receivedand on hand.

b. Using the manufacturers technical manual for the specific aircompressor and its components, inspect for and determine if the followingitems exist and/or comply, and record results and comments in ANNEX A.

(1) All instruments and controls are clearly and permanently markedaccording to their functions.

(2) All controls, gauges and indicators necessary for operation ofthe compressor are visible and convenient to the operator.

(3) Safety devices are provided and audible and/or visual warningfunctions as specified.

(4) Liquid level indicators accurately display liquid level.

(5) All removable components can be removed and properly reinstalledin working conditions using the manufacturers operating manual, i.e. filters.

(6) All drain, traps and safety valves discharge ports will functionwithout splashing, are conveniently located, and are away from operatingpersonnel.

B-4

c. Have all instrumentation provided by manufacturer compared for

accuracy.

d. Operate the compressor for one hour under a no load condition.

e. Take and analyze air samples following no load test run.

f. Conduct testing in accordance with the procedures set forth in

Section 4. Total compressor running time will be 50 hours.

3. Preliminary Arrangements

a. Arrange for photographic support.

b. Arrange for air analysis as required.

c. Arrange for all instrumentation to be compared by calibration facility.

d. Prior to the actual test procedure the air compressor system shall be

operated then shut down when the system is at maximum pressure and the

following steps accomplished.

(1) Hold pressure.

(2) Allow the system to cool to ambient temperature, and conduct a 90minute drop test as follows:

(a) After temperature has stabilized, record the storage flask

pressure.

(b) After 90 minutes, record pressure again.

(3) Leak rate shall be zero.

4. Test Procedure. The following test procedures will be conducted as

specified, and the results entered in the log sheets, ANNEX A.

a. Take air samples at hours 1, 25, 50 and anytime air quality is

questioned.

b. Log the following measurements on the log sheet, ANNEX A.

(1) Date

(2) Time

(3) Compressor meter hour (if applicable)

(4) Total hours running time on compressor (this test)

(5) Compressor oil level

(6) Compressor oil pressure

(7) First stage pressure

(8) Second stage pressure

(9) Third stage pressure

(10) Fourth stage pressure

(11) Discharge air temperature

(12) Ambient air temperature

(13) Flask size and pressure

(14) Remarks

c. The compressed air system shall be set to cycle 10 times per hour by

adjusting controls and bleed off rate.

d. Compute volume output of the compressor by charging a known volumestorage flask to 3000 psig. Log total charging time and calculate chargingrate.

e. Oil consumption shall be measured and recorded during testing, withmeasurements and additions entered in the log.

f. Perform maintenance as required by the manufacturers instructionmanuals.

5. Safety Rules and Emergency Procedures. Safety rules and precautions asoutlined in the specific manufacturers instruction manuals.

6. Termination Criteria. The following is failure criteria for thesuitability for the specific compressor system for ANU.

a. Failure of any component which cannot be corrected in accordance withthe recommended schedule of maintenance.

b. Failure of the diving air system to operate as specified by the

manufacturers instruction manuals.

c. Failure of the valves to operate as specified.

d. Failure of the pressure relief valves to operate as specified.

e. A decrease in capacity of the compressor during this performance

evaluation.

f. A discharge air temperature from any cylinder in excess of

manufacturers specifications or recommendations.

g. Failure of the air samples to pass breathing air specifications.

7. Personnel Requirements. NEDU Hyperbaric Department and/or Test and

Evaluation Division personnel (one each).

8. Logistic Support

a. Photographic support.

b. Gauge calibration.

c. Air analysis.

9. Control and Safety of Systems. The NEDU Task Leader and Test director are

responsible for the control and safety of systems. All control systems,safety systems and valves shall be activated by making the necessary temporary

alterations to the compressor controls and operations whenever such

alterations will not result in a risk of damage to the compressor unit. Where

a risk is present, the test may be conducted with control systems completely

removed from the compressor unit by subjecting control system sensors to other

sources of temperature and pressure; for example, the oil safety switches and

sensors, automatic condensate blow down valves overpressure switches and

sensor, high temperature switches and sensors, and other devices designed tooperate or protect the system and attending personnel.

10. Post Test Arrangements. Make all necessary arrangements as previously

determined to return compressors system and test fixtures to proper locations.

11. Report Production. Test report and camera ready copy to be written andprepared by the Test Director and submitted for approval to the Commanding

Officer via the Task Leader. Estimate publication date is six weeks following

completion of testing. Test Directors will be the point of contact for NEDU

concerning this test and will be appointed by the Task Leader.

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Memorandum 15 Nov 1989

To: Dave Sullivan, EDU

From: Glen Deason, Code 5130

Subject: Results of air sample from Bauer compressor. This was

the one hour test. Test number 89-48.

1. In accordance with your request, on 15 Nov 1989 the air

sample delivered to the gas analysis lab was analyzed and found

to contain:

Component Air Sample

Oxygen 21.0%

Nitrogen 78.1%

Argon 0.9%

Carbon Dioxide 362 PPM

Carbon Monoxide <0.5 PPM

Total Hydrocarbons* 3.4 PPM

Total HalogensN* <0.5 PPM

Methane 3.4 PPM

Acetylene <0.1 PPM

Acetone <0.1 PPM

Freon 113 <0.1 PPM

Methyl Ethyl Ketone <0.1 PPM

Ethylene <0.1 PPM

Toluene <0.1 PPM

Benzene (0.1 PPM

C4+ <0.1 PPM

*Expressed as methane equivalents.wExpressed as methyl chloride equivalents.

2. The above sample showed no appreciable contamination; all

components were within the acceptable range.

Glen DeasonChemist

I)-'.

4.

Memorandum 20 Nov 1989

To: Dave Sullivan, EDUFrom: Glen Deason. Code 5130

Subject: Results of air sample from Bauer compressor. This wasthe twenty-five hour test.

1. In accordance with your request, on 20 Nov 1989 the airsample delivered to the gas analysis lab was analyzed and foundto contain:

Component Air Sample

Oxygen 21.0%Nitrogen 78.1%Argon 0.9%Carbon Dioxide 392 PPMCarbon Monoxide <0.5 PPMTotal Hydrocarbons* 3.6 PPMTotal Halogens** <0.5 PPMMethane 3.6 PPMAcetylene <0.1 PPMAcetone <0.1 PPMFreon 113 <0.1 PPMMethyl Ethyl Ketone <0.1 PPMEthylene <0.1 PPMToluene <0.1 PPMBenzene <0.1 PPM

C4+ <0.3 PPM

*Expressed as methane equivalents.**Expressed as methyl chloride equivalents.

2. The above sample showed no appreciable contamination; allcomponents were within the acceptable range.

Glen DeasonChemist

1)-:

Memorandum 27 November 1989

To: Dave Sullivan. NEDUFrom: Glen Deason, Code 5130

Subject: Tent results of air sample from Bauer compressor after50 hours.

1. In accordance with your request on 27 Nov 1989, the airsample delivered to the gas analysis lab was analyzed and foundto contain:

Component Air Sample

Oxygen 21.0%Nitrogen 78.1%Argon 0.9%Carbon Dioxide 348 PPMCarbon Monoxide (0.5 PPMTotal Hydrocarbons* 2.1 PPMTotal Halogens** (0.5 PPMMethane 2.1 PPMAcetylene (0.1 PPMAcetone (0.1 PPMFreon 113 <0.1 PPMMethyl Ethyl Ketone (0.1 PPM

Ethylene (0.1 PPMToluene (0.1 PPMBenzene (0.1 PPM

C4+ (0.1 PPM

*Expressed as methane equivalents.**Expressed as methyl chloride equivalents.

2. The above sample showed'no appreciable contamination; all

components were within the acceptable range.

Glen DeagonChemist

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Memorandum 15 Nov 1989

To: Dave Sullivan, EDUFrom: Glen Deason, Code 5130

SubJect: Results of air sample from Bauer compressor. This wasthe one hour test. Test number 89-48.

1. In accordance with your request, on 15 Nov 1989 the airsample delivered to the gas analysis lab was analyzed and foundto contain:

Component Air Sample

Oxygen 21.0%"Nitrogen 78.1%Argon 0.9%Carbon Dioxide 362 PPMCarbon Monoxide <0.5 PPMTotal Hydrocarbons* 3.4 PPMTotal Halogens** <0.5 PPMMethane 3.4 PPMAcetylene <0.1 PPMAcetone <0.1 PPMFreon 113 <0.1 PPMMethyl Ethyl Ketone <0.1 PPMEthylene <0.1 PPMToluene <0.1 PPMBenzene (0.1 PPM

C4+ (0.1 PPM

*Expressed as methane equivalents.WExpressed as methyl chloride equivalents.

2. The above sample showed no appreciable contamination; allcomponents were within the acceptable range.

Glen DeasonChemist

Memorandum 20 Nov 1989

To: Dave Sullivan. EDUFrom: Glen Deason. Code 5130

Subject: Results of air sample from Bauer compressor. This was

the twenty-five hour test.

1. In accordance with your request, on 20 Nov 1989 the air

sample delivered to the gas analysis lab was analyzed and found

to contain:

Component Air Sample

Oxygen 21.0%

Nitrogen 78.1%

Argon 0.9%

Carbon Dioxide 392 PPM

Carbon Monoxide <0.5 PPM

Total Hydrocarbons* 3.6 PPM

Total Halogens** <0.5 PPM

Methane 3.6 PPM

Acetylene <0.1 PPM

Acetone <0.1 PPM

Freon 113 <0.1 PPM

Methyl Ethyl Ketone <0.1 PPM

Ethylene <0.1 PPM

Toluene <0.1 PPM

Benzene <0.1 PPM

C4+ <0.3 PPM

*Expressed as methane equivalents.**Expressed as methyl chloride equivalents.

2. The above sample showed no appreciable contamination; all

components were within the acceptable range.

Glen DeasonChemist

Memorandum 27 November 1989

To: Dave Sullivan. NEDUFrom: Glen Deason, Code 5130

Subject: Teat results of air sample from Bauer compressor after50 hours.

1. In accordance with your request on 27 Nov 1989, the air

sample delivered to the gas analysis lab was analyzed and foundto contain:

-"Component Air Sample

Oxygen 21.0%Nitrogen 78.1%Argon 0.9%Carbon Dioxide 348 PPMCarbon Monoxide <0.5 PPMTotal Hydrocarbons* 2.1 PPMTotal Halogens** (0.5 PPMMethane 2.1 PPMAcetylene (0.1 PPMAcetone (0.1 PPMFreon 113 <0.1 PPMMethyl Ethyl Ketone <0.1 PPMEthylene (0.1 PPMToluene (0.1 PPMBenzene <0.1 PPM

C4+ (0.1 PPM

*Expressed as methane equivalents.**Expressed as methyl chloride equivalents.

2. The above sample showed no appreciable contamination; all

components were within the acceptable range.

Glen Deason

Chemist

I)- '