SELF-CONTAINED · 2014. 9. 27. · 00 00 co preliminary hazard analysis for iself-contained...

AD-A16i 883 PRELIMINARY HAZARD ANALYSIS FOR SELF-CONTAINED /NAVIGATION SVSTEM(U) LEAR SIEGLER INC GRAND RAPIDS MIINSTRUMENT DIV J T REEVES 84 OCT 85 MISC-2837

UNCLASSIFIED F99683-85-C-1224 F/G 17/7 W

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MICROCOPY RESOLUTION TEST CHART

NATIONAL BUREAU OF STANDARDS-3963-A

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CO PRELIMINARY HAZARD ANALYSIS

FOR

ISELF-CONTAINED NAVIGATION SYSTEM

REPORT NO. MISC-2037

4 OCTOBER 19S.5

Contract No. F09603-85-C-1224

E:CTSDJEC 3 9 9

LEAR SIEGLEFR, INC,INSTRUMENT DIVSIQ

Tidoumenrt has 4en app~

-85 11 07 8

PRELIMINARY HAZARD ANALYSIS

FOR

SELF-CONTAINED NAVIGATION SYSTEM

REPORT NO. MISC-2037

4 OCTOBER 1985

Contract No. F09603-85-C-1224

Data Item 0103

,DTiOSELECTEDEC 3 1986

Prepared by:J. T. Reeves

Approved by:H. S ark

jo7:,anent hos bcon UP01~bti" release and al'e; its- ' -utio is unlimited.

Report No. MISC-2037 4Revision___

TABLE OF CONTENTS

Title Page No. ,

SUMMARY. ... ............ .......... 3 %...-..~;~GENERAL. ... ............ .......... 4 . .,z.-.. 4J..

PURPOSE. ... ............ .......... 4SCOPE. ... ............ ........... 4APPLICABLE DOCUMENTS. ......... ......... 4 c... '-~'..

SYSTEM DESCRIPTION. .. ...... ...... ..... 5GENERAL DESCRIPTION . . .. ...... .......... 5 ~. ,.

MAJOR COMPONENTS . .. ...... ...... ....... 8ICDS. ........ ............ .........INS. ... ............ ...... ....... 8DVS. ... ............ ............. 8SYSTEM FUNCTIONS . ... ...... ...... ..... 8 4.

MAJOR FUNCTIONS. . .. ...... ...... ....... 8SECONDARY FUNCTIONS . . .. ...... .......... 8A KITS . ... ...... ...... .......... 9SAFETY CRITERIA. ... ........... ....... 10 .-. ~ 1.

SYSTEM SAFETY PRECEDENCE. ......... ....... 10 .-

HAZARD LEVEL CATEGORIES .. ........ ........ 10 ~ ~ ~HAZARD SEVERITY....................10 .i-. .

HAZARD PROBABILITY...... ... . . .. .. .. .. . ....HAZARD ANALYSIS MATRIX SHEETS .. .. ...... ........ 1

j.

APPENDIX I .

HAZARD ANALYSIS MATRIX SHEETS

4, % ~ %V

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Report No. MISC-2037Revision

SUMMARY

The Preliminary Hazard Analysis (PHA) has been prepared IAW CDRL 0103

for the C-130 Self-Contained Navigation System (SCNS).

The PHA has been applied to the installation of the SCNS Equipment IAW

84-MMSRE-004-C-130-SCNS Rev.G and 84-'IMSRE-009-C-130 Rev.G.

No confirmed Category I or II hazards have been found. Item 10 of the

Appendix is a speculative Category II hazard and should not occur in the

final design.

4. V

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.....................................


1.0 GENERAL - This document constitutes the Preliminary HazardAnalysis (PHA) for the C-130 Self-Contained NavigationSystem (SCNS) installation. It provides an initial riskassessment of the SCNS installation.

1.1 PURPOSE - IAW MIL-STD-882A, "the purpose of the PHA is toidentify safety critical areas, evaluate hazards, and iden-tify the safety design criteria to be used" ."The itemscovered in this analysis are to be used during the designphase and trade-off study period to prevent unsafe concepts,designs, or oversights that could lead to incorporation ofhazards in the hardware, the system operation, handling, andmaintenance.)

1.2 SCOPE -the scope of this analysis for Data Item 0103 islimited to the SCNS installation task+"A-kitt-components(viz. wiring harness, brackets, racks, control panels, relayboxes, circuit breakers),'"B-kit"'omponents (viz. ICDUs,BICU, DVS, INU), and the physical interfaces with existingequipment (viz. CADC or Sensors, Radar, Air Data Sensors).These items will be analyzed in respect to safe installation,safe hardware, and safe usage (viz. installation, removal,in-place test, and handling).

2.0 APPLICABLE DOCUMENTS

MIL-STD-882A System Safety Program Requirements(paragraph 5.5.1.1) (PreliminaryHazard Analysis)

DI-H-7048 System Safety Hazard Analysis Report(paragraph 10.2.1)

DHI-6 System Safety Design Handbook

SOW84-MMSRE-004-C-130-SCNS C-130 Modification Self-ContainedRev.G Navigation System (SCNS), Statement

of Work for

84-MMSRE-009-C-130 Self-Contained Navigation System

Rev.G (SCNS), Integration, Fabrication

and Installation and Test of, C-130Aircraft

"e -4-


3.0 SYSTEM DESCRIPTION

3.1 GENERAL DESCRIPTION - The SCNS is comprised of a DopplerVelocity Sensor (DVS), Inertial Navigation System (INS),Integration Computation and Display System (ICDS), and theassociated installation Group A kit to provide doppler aidedINS navigation, INS only, Doppler only and TAS/HDG naviga-tion modes, and control of the various C-130 communication/navigation (comm/nav) systems. The SCNS ICDS consists ofthree Integrated Control Display Units (ICDU) and one BusIntegration Computer Unit (BICU) for all C-130 aircraftexcept that the HC-130H will have an additional ICDU for theradio operation. A block diagram is shown in figure 1.

In conjunction with the SCNS installation, the followingsystems/components will be removed from the various C-130configurations.

AN/APN-147 Doppler

AN/ASN-35 Doppler ComputerARN-131 OmegaAN/ASN-24 or PINS (C-130E AWADS only)

Radio controls for

AN/ARC-164 UHFAN/ARC-186 VHFAN/ARC-190 HFAN/ARN-118 TACANAN/ARN-127 VOR/ILSUSAF Standard VOR/ILS

The communication and navigation radio control functionswill be assumed by the ICDUs.

3.2 MAJOR COMPONENTS - A list of major components is provided intable I.

* -5-

Report No. MISC-2037Revision______

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Table I. Major Component List

GROUPMODEL NO. DESCRIPTION LOCATION

A B

LSI-2580F 4 Integrated Control Left side forward onDisplay Unit center console for

pilot. Right side for-ward for co-pilot. Naypanel for navigator.Radio operator's panelfor HC-130.

LSI-2905A 4 Bus Interface Computer New equipment rack.Unit

LSI-2905B 4 Bus Interface Computer New equipment rack.

Unit with Added RadarInterface Card (AWADS)

LSI-2590A 4 Doppler Velocity Sensor Belly of aircraftAPN-218

SNU 84-1 1 GFE Inertial Navigation Aircraft floor below_ Sensor new equipment rack

Dwg No's. Electrical A-Kit Several variations

TBD__ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _

Dwg No's. Mechanical A-Kit Several variationsi ~TBD

4 Flight Director ModeSelect panel modifica-tions

SCNS Control Panel

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I

*',, , . . % . . * * 4 ,


3.2 ICDS - The ICDS consists of two major components: the Inte-grated Control Display Unit (ICDU) and the Bus IntegrationComputer Unit (BICU). All aircraft configurations utilizefully interchangeable ICDUs: pilot's, co-pilot's, navigator'sand radio operator's (HC-130H). Jumper wires in the aircraftinstallation indicate its particular station location toeach ICDU. One basic BICU design is utilized in all SCNSconfigurations. Jumper wires in the aircraft installationfor the BICU indicate in which aircraft model the BICU isinstalled.

3.2.2 INS - The Inertial Navigation System (INS) consists of threemajor components: the Inertial Navigation Unit (INU), theINU mount, and the SCNS battery subsystem. The SCNS INUconforms to requirements of the F3 SNU 84-1 specification.

3.2.3 DVS - The Doppler Velocity Sensor (DVS) consists of theAPN-218 Airforce Standard Doppler. The DVS provides basicnavigation inputs for SCNS independent doppler navigationcapability and for integrated INS/Doppler capability.

3.3 SYSTEM FUNCTIONS - The SCNS primary function is to providehighly accurate and reliable self-contained navigationcapability for the MAC C-130 Tactical Airlift Operations.These missions and operations are defined in MACR 55-130,Military Airlift Command Regulation.

3.3.1 MAJOR FUNCTIONS - The SCNS provides the following majorfunctions.

0 Navigation modes and position update capability.

- . 0 Integrated control and display of navigation, commun-ication, guidance, and steering functions.

0 Aircraft guidance and steering - including flight plan,time of arrival, CARP, SAR, and rendezvous.

3.3.2 SECONDARY FUNCTIONS - Additional features are provided toimprove performance, reduce crew workload, and minimizeaircraft maintenance time. Specifically, these are:

03 TACAN mixing to improve navigation accuracy.

C CARP capability that will reduce crew workload andincrease mission flexibility.

0 Simple, accurate, and quick magnetic compass calibration-C procedures.

-8-

.' - . . -.C. . . , . .- - . . . - . . , - . - - . . . -- . . - - .., .


3.4 A-KITS - The "A" kits will consist of:

O1 The interconnecting cables between added LRUs.

03 The interconnecting cables and modifications to cablesconnecting existing LRUs.

O Mounting trays and hardware.

o Sheet metal work as required.

o Control panels

o3 Blank panels

13 Annunciator lights

o Pressure sensors

o Circuit breaker changes and additions.

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Report No. MISC-2037Revision______

4.0 SAFETY CRITERIA -Certain safety criteria IAW MIL-STD-882Aare followed in this PHA.

4.1 SYSTEM SAFETY PRECEDENCE -Any items detected as fittinginto hazardous categories are treated in the following order:

a. Redesign to eliminate the hazard, if possible.

b. Change operating procedure to eliminate or reduce

occurrence.

c. Provide training recommendations to allow personnel tosafely work in the presence of the hazard.

d. Label or placard hazards and provide inputs to manuals.

4.2 HAZARD LEVEL CATEGORIES - (criticality definitions) For thepurpose of the hazard analysis, the hazards will be definedand categorized IAW the criticality definitions set forthbelow (ref. MIL-STD-882A, para. 5.4.3.1).

4.2.1 HAZARD SEVERITY - Hazard severity categories are defined toprovide a qualitative measure of the worst potential conse-quences resulting from personnel error, environmental condi-tions, design inadequacies, procedural deficiencies, system,subsystem or component failure or malfunction as follows:

a. Category I - Catastrophic - May cause death or systemloss.

b. Category II -Critical - May cause severe injury, severeoccupational illness, or major system damage.

C. Category III - Marginal -May cause minor injury, minoroccupational illness, or minor system damage.

d. Category IV -Negligible - Will not result in injury,occupational illness, or system damage.

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4.2.2 HAZARD PROBABILITY - The probability of the defined hazardoccurring is based on a qualitative judgement for the purposeof this hazard analysis. The probability levels quoted hereare from MIL-STD-882A, Para. 5.4.3.2.

DESCRIPTIVE LEVEL SPECIFIC INDIVIDUAL FLEET OR

WORD ITEM INVENTORY

Frequent A Likely to occur frequently Continuously experienced

* - Reasonably B Will occur several times in Will occur frequentlyProbable life of an item

Occasional C Likely to occur sometime in Will occur several timeslife of an item

Remote D So unlikely, it can be Unlikely to occur butassumed that this hazard possible!will not be experienced

Extremely E Probability of occurrence So unlikely, it can beImprobable cannot be distinguished from assumed that this hazard

zero. will not be experienced.

Impossible F !Physically impossible to Physically impossible to

loccur occur

4.3 HAZARD ANALYSIS MATRIX SHEETS - Due to the preliminary andlimited data available at this time, the Hazard AnalysisMatrix sheets reflect safety concerns. Hazards described maynot exist in the final configuration. The Hazard Classesshould be considered as based on concerns and estimates,and are not to be construed as reflections on the finaldesign. Later reports (other data items) will reflect theelimination or correction of such potential hazards.

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A- .•

Report No. MISC-2037Appendix I, Page 1Revision _____

APPENDIX I

HAZARD ANALYSIS MATRIX SHEETS

Report No. MISC-2037Appendix I, Page 2Revision______

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