MIL_STD_810G Attachment.pdf

NOT MEASUREMENT

SENSITIVE

MIL-STD-810G

31 October 2008

SUPERSEDING

MIL-STD-810F

1 January 2000

DEPARTMENT OF DEFENSE

TEST METHOD STANDARD

ENVIRONMENTAL ENGINEERING CONSIDERATIONS

AND LABORATORY TESTS

AMSC N/A AREA ENVR

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

Downloaded from http://www.everyspec.com

MIL-STD-810G

PART ONE

FOREWORD

1. This standard is approved for use by all Departments and Agencies of the Department of Defense (DoD).

Although prepared specifically for DoD applications, this standard may be tailored for commercial applications as well. While MIL-STD-810F incorporated a significant revision of MIL-STD-810E, MIL-STD-810G not only consolidates the basic -810F with its three change notices to result in one comprehensive document, but also includes a number of corrections, significant changes, and additions to the comprehensive -810F, to include five new test methods, one of which (Method 526) was extracted from Method 516. The primary emphases are still the same – (with the exception of Method 528) tailoring a materiel item's environmental design and test limits to the conditions that the specific materiel will experience throughout its service life, and establishing laboratory test methods that replicate the effects of environments on materiel, rather than trying to reproduce the environments themselves. However, the "G" revision continues the up-front explanation of how to implement the environmental tailoring process throughout the materiel acquisition cycle.

As in MIL-STD-810F, this revision recognizes that the environmental design and test tailoring process has expanded to involve a wide range of managerial and technical interests. Accordingly, this revision orients environmental design and test direction toward three basic types of users who have distinctly different, although closely associated, interests: program managers who, among other responsibilities, ensure proposed concepts and systems are valid and functional in intended operational environments; environmental engineering specialists (EES), who enter the acquisition process early to assist combat and materiel developer tailoring efforts by preparing life cycle environmental profiles and drafting tailored design criteria and test programs; and the design, test, and evaluation community, whose analysts, engineers, and facility operators use tailored designs and tests to meet user needs.

2. Part One describes management, engineering, and technical roles in the environmental design and test tailoring process. It focuses on the process of tailoring materiel design and test criteria to the specific environmental conditions a materiel item is likely to encounter during its service life. New appendices support the succinctly presented text of Part One. Annex A contains complete descriptions of environmental engineering tasks. These tasks, along with management information in Annex B and EES guidance in Annex C, will help to ensure the environmental design and test tailoring process is implemented and documented according to the disciplined, but flexible approach to materiel acquisition called for in Department of Defense (DoD) 5000-series documents (DoDD 5000.1). Terms used in this standard relating to the materiel acquisition process are limited to terms used in the DoD 5000-series documents; to avoid confusion and promote simplicity, service-specific terms/processes are not used.

3. Part Two contains environmental laboratory test methods to be applied according to the general and specific test tailoring guidelines described in Part One. It is important to emphasize that, with the exception of Method 528, these methods are not to be called out in blanket fashion, nor applied as unalterable routines, but are to be selected and tailored to generate the most relevant test data possible.

To support the tailoring process described in Part One, each test method in Part Two contains some environmental data and references, and identifies tailoring opportunities for the particular method. Some methods afford a wide latitude for tailoring; some can be tailored up to established limits, and some have relatively few tailoring options.

Whenever possible, each method contains background rationale to help determine the appropriate level of tailoring.

Each test method supports the test engineer and test facility operator by describing preferred laboratory test facilities and methodologies. Any specific tailoring information and values contained in these test methods should be supplanted by more up-to-date field/fleet or program-specific information when available.

When applied properly, the environmental management and engineering processes described in this standard can be of enormous value in generating confidence in the environmental worthiness and overall durability of materiel system design. However, it is important to recognize that there are limitations inherent in laboratory testing that make it imperative to use proper caution and engineering judgment when extrapolating these laboratory results to results that may be obtained under actual service conditions. In many cases, real-world environmental stresses (singularly or in combination) cannot be duplicated practically or reliably in test laboratories. Therefore, users should not assume that a system or component that passes laboratory tests of this standard also would pass field/fleet verification trials. DoD 5000-series documents call for component technology to be demonstrated in

PART ONE-ii relevant environments to reduce risk on components and subsystems that have been demonstrated only in laboratory environments (DoDI 5000.2).

4. Part Three contains a compendium of climatic data and guidance assembled from several sources to include AR 70-38, “Research, Development, Test and Evaluation of Materiel for Extreme Climatic Conditions,” (1979), Draft AR 70-38 (1990) that was assembled using 1987 Air Land Battlefield Environment (ALBE) report information, “Environmental Factors and Standards for Atmospheric Obscurants, Climate, and Terrain,” and MIL-HDBK-310, Global Climatic Data for Developing Military Products.

Part Three provides planning guidance for realistic consideration (starting points) of climatic conditions in the research, development, test, and evaluation (RDTE) of materiel and materials used throughout their life cycles in various climatic regions throughout the world. It is intended that this and related documents will help achieve the objective of developing materiel that will perform adequately under the environmental conditions likely to be found throughout its life cycle in the areas of intended use.

5. The US Department of Defense would like to thank the following individuals for their contributions toward the development and publication of MIL-STD-810G:

Army Air Force

Jimmie Barnett – Dugway Proving Ground Dwayne Bell – Eglin AFB

Michael Barry – Aberdeen Test Center Cheryl Copes – ASC/ENRS, Wright-Patterson Air Force Base

William (Skip) Connon– Aberdeen Test Center Lorraine Wright – ASC/ENRS, Wright-Patterson Air Force Base

Jeff Dallman – White Sands Missile Range Faustino Zapata – ASC/ENFS, Wright-Patterson Air Force Base

Herb Egbert – ECIII, YPG

Rick Errhalt – Electronic Proving Ground Navy

Judy Galloway – Aberdeen Test Center Brian Haugen – NAWC, China Lake

Mike Hale – Redstone Technical Test Center James E. Howell III – NSWC

John Harris – Redstone Technical Test Center Al Kukk – Navy Consultant

Al Kelley – YPG-NETO Ron Merritt – Naval Air Warfare Center, China Lake

Robert Kerr – SDDC, Ft Eustis Richard F. Taddeo – NAVSEA 05P12

Paul Krause – COE, TEC Brett Tanner – Naval Air Warfare Center, China Lake

Bob McKinnon – Aberdeen Test Center

Joe Nash – AMRDEC Private Industry

Randy Patrick – Yuma Test Center Vesta Bateman – Mechanical Shock Consulting

Chris Reeks – Redstone Technical Test Center George Coonley – KHS Tech. Lighting

Rick Reynaud – White Sands Missile Range Gus Cutting – Honeywell

Linda Spears– YPG-NETO

Jamie Sullivan – Redstone Technical Test Center Organizations

Ken Thompson – DTC-NETO, APG IEST – Institute of Environmental Sciences and Technology

Scott Walton – Aberdeen Test Center SAVIAC – Shock and Vibration Information Analysis Center

The MIL-STD-810G Working Group wishes to recognize with great appreciation Mr. Ken Thompson, MIL-STD- 810G Committee Chairman, for his exemplary leadership, guidance, and dedication to bringing this collaborative project to fruition.

PART ONE-iii

PART ONE-iv

6. This standard is intended to be a "living document" that will be updated as new concepts, technologies, and methodologies evolve.

Questions about this document’s technical content may be addressed to the following offices:

Aeronautical Systems Center, ATTN: ASC/ENFS, 2530 Loop Road West, Wright-Patterson AFB, OH 45433- 7101; Commercial Tel: (937) 255-8517 or 904-5863; DSN 785-8517 or 674-5863; Fax: (937) 476-4546 or 255- 2363.

Naval Air Warfare Center, Aircraft Division, ATTN: Code AIR-4.3.4, Patuxent River, MD 20670; Commercial Tel:

(301) 342-8049; DSN 342-8049; Fax: (301) 757-1213.

Naval Air Warfare Center, Weapons Division, ATTN: Code 476300D, China Lake, CA 93555-6100; Commercial Tel: (760) 939-4667; DSN 437-4667; Fax: (760) 939-1065.

US Army Developmental Test Command, 314 Longs Corner Road, ATTN: CSTE-DTC-TM-B, Aberdeen Proving Ground, MD 21005-5055; Commercial Tel: (410) 278-1476/1417; DSN 298-1476/1417; Fax: (410) 278-9170.

The Preparing Activity for MIL-STD-810 transfers from Air Force Code 11 to Army Code TE concurrent with the publication of this Revision G.

Comments, suggestions, or questions on this document should be addressed to US Army Developmental Test Command, 314 Longs Corner Road, ATTN: CSTE-DTC-TM-B, Aberdeen Proving Ground, MD 21005-5055; or e-mailed to apgr-TEdtStandards@conus.army.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at http://assist.daps.dla.mil.

mailto:apgr-TEdtStandards@conus.army.mil http://assist.daps.dla.mil/

CONTENTS

PART ONE -- ENVIRONMENTAL ENGINEERING PROGRAM GUIDELINES

Paragraph Page

1. SCOPE ................................................................................................................................... PART ONE-1

1.1 Purpose................................................................................................................................... PART ONE-1

1.2 Application ............................................................................................................................. PART ONE-2

1.3 Limitations ............................................................................................................................. PART ONE-3

2. APPLICABLE DOCUMENTS.............................................................................................. PART ONE-4

2.1 General ................................................................................................................................... PART ONE-4

2.2 Government Documents ........................................................................................................ PART ONE-4

2.2.1 Specifications, standards, and handbooks .............................................................................. PART ONE-4

2.2.2 Other government documents, drawings, and publications ................................................... PART ONE-5

2.3 Non-Government publications ............................................................................................... PART ONE-5

2.4 Order of precedence ............................................................................................................... PART ONE-5

3. DEFINITIONS ....................................................................................................................... PART ONE-6

3.1 Terms ..................................................................................................................................... PART ONE-6

3.2 Acronyms ............................................................................................................................... PART ONE-8

4. GENERAL PROGRAM GUIDELINES ............................................................................... PART ONE-9

4.1 Program Managers ................................................................................................................. PART ONE-9

4.1.1 Roles of the program manager ............................................................................................... PART ONE-9

4.1.2 Guidance for program managers ............................................................................................ PART ONE-9

4.1.2.1 Mission Need Statement (MNS) .......................................................................................... PART ONE-10

4.1.2.2 Operational Requirements Document (ORD) ...................................................................... PART ONE-11

4.1.2.3 System Engineering Management Plan (SEMP) ................................................................. PART ONE-11

4.1.2.4 Test and Evaluation Master Plan (TEMP) ........................................................................... PART ONE-11

4.2 Environmental Engineering Specialists (EES) ..................................................................... PART ONE-11

4.2.1 Roles of environmental engineering specialists ................................................................... PART ONE-11

4.2.2 Environmental engineering tailoring tasks........................................................................... PART ONE-12

4.2.2.1 General ................................................................................................................................. PART ONE-12

4.2.2.2 Preparing an Environmental Engineering Management Plan (EEMP), Task 401 ............................................................................................................................... PART ONE-12

4.2.2.3 Developing an Environmental Test and Evaluation Master Plan (ETEMP) ........................ PART ONE-12

4.2.2.3.1 Defining a Life Cycle Environmental Profile (LCEP), Task 402 ........................................ PART ONE-12

4.2.2.3.2 Developing Operational Environment Documentation (OED), Task 403 ........................... PART ONE-12

4.2.2.3.3 Developing an Environmental Issues/Criteria List (EICL), Task 404 ................................. PART ONE-13

4.2.2.4 Preparing a Detailed Environmental Test Plan (DETP), Task 405 ...................................... PART ONE-13

4.2.2.5 Preparing an Environmental Test Report (ETR), Task 406 ................................................. PART ONE-13

4.3 Design and Test Engineers and Facility Operators .............................................................. PART ONE-13

4.3.1 Roles of design engineers .................................................................................................... PART ONE-13

4.3.2 Roles of test engineers/facility operators ............................................................................. PART ONE-13

4.3.3 Guidance for design and test engineers and test facility operators ...................................... PART ONE-13

4.3.3.1 Natural environment (field/fleet) testing .............................................................................. PART ONE-13

4.3.3.2 Laboratory testing ................................................................................................................ PART ONE-13

5. GENERAL LABORATORY TEST METHOD GUIDELINES ......................................... PART ONE-16

5.1 Test Conditions .................................................................................................................... PART ONE-16

5.2 Tolerances for Test Conditions ............................................................................................ PART ONE-16

PART ONE-v

CONTENTS - Continued

Paragraph Page

5.3 Test Instrumentation. ........................................................................................................... PART ONE-17

5.3.1 Suitability for environment. ................................................................................................. PART ONE-17

5.3.2 Calibration. .......................................................................................................................... PART ONE-17

5.4 Stabilizing Test Temperature. .............................................................................................. PART ONE-17

5.4.1 Test item operating. ............................................................................................................. PART ONE-17

5.4.2 Test item non-operating. ...................................................................................................... PART ONE-17

5.5 Test Sequence. ..................................................................................................................... PART ONE-17

5.6 Test Level Derivation. ......................................................................................................... PART ONE-18

5.7 Pretest Information for Facility Operators. .......................................................................... PART ONE-18

5.8 Test Setup. ........................................................................................................................... PART ONE-18

5.8.1 Installing the test item in test facility. .................................................................................. PART ONE-18

5.8.2 Test item operation. ............................................................................................................. PART ONE-18

5.9 PretestBaseline Data. ........................................................................................................... PART ONE-18

5.10 Information During Test. ..................................................................................................... PART ONE-19

5.11 Interrupted Tests. ................................................................................................................. PART ONE-19

5.11.1 In-tolerance interruptions. .................................................................................................... PART ONE-19

5.11.2 Out-of-tolerance interruptions ............................................................................................. PART ONE-19

5.11.3 Interruption due to test item operation failure. ..................................................................... PART ONE-19

5.12 Combined Tests. .................................................................................................................. PART ONE-20

5.13 Post-test Data. ...................................................................................................................... PART ONE-20

5.14 Environmental Effects and Failure Criteria. ........................................................................ PART ONE-22

5.15 Environmental Test Reports. ................................................................................................ PART ONE-22

5.16 Water Purity. ........................................................................................................................ PART ONE-22

5.17 Analysis of Results. ............................................................................................................. PART ONE-22

5.18 Monitoring. .......................................................................................................................... PART ONE-23

5.18.1 Monitoring test chamber parameters. ................................................................................... PART ONE-23

5.18.2 Monitoring the item under test. ............................................................................................ PART ONE-23

5.19 Total High Temperature Exposure Duration ....................................................................... PART ONE-23

6. NOTES ................................................................................................................................. PART ONE-24

6.1 Intended use. ........................................................................................................................ PART ONE-24

6.2 Acquisition requirements ..................................................................................................... PART ONE-24

6.3 Subject term (key word) listing ........................................................................................... PART ONE-24

6.4 International standardization agreement implementation .................................................... PART ONE-25

6.5 Changes from previous issue ............................................................................................... PART ONE-25

FIGURES

1-1. Environmental engineering program guide ............................................................................ PART ONE-1 1-2. Roles of acquisition personnel in environmental design/test tailoring process ...................... PART ONE-2 1-3. Environmental test program tailoring process ..................................................................... PART ONE-10 1-4a. Generalized life cycle histories for military hardware ......................................................... PART ONE-14 1-4b. Generalized life cycle histories for military hardware ......................................................... PART ONE-15 1-5. Interrupted test cycle logic ................................................................................................... PART ONE-21

PART ONE-vi

Annex

Page

A Environmental Management and Engineering Tasks ............................................................. PART ONE-A-1 Task 401 – Environmental Engineering Management Plan (EEMP) ............................. PART ONE-A-2 Task 402 – Life Cycle Environmental Profile (LCEP)................................................ PART ONE-A-3 Task 403 – Operational Environment Documentation (OED) .................................... PART ONE-A-5 Task 404 – Environmental Issues/Criteria List (EICL) ............................................... PART ONE-A-7 Task 405 – Detailed Environmental Test Plans (DETP) ............................................. PART ONE-A-8 Task 406 – Environmental Test Reports (ETR) ........................................................ PART ONE-A-11

B Detailed Program Management Guidance ............................................................................... PART ONE-B-1 C Environmental Tailoring Guidelines for Environmental Engineering Specialists (EES) ................................................................................................................ PART ONE-C-1 D Terminology for Dynamic (Mechanical) Test Methods ......................................................... PART ONE-D-1

PART ONE ANNEX C FIGURES

C-1 Areas of occurrence of climatic categories A1, A2, & A3 ................................................ PART ONE-C-5 C-2 Areas of occurrence of climatic categories B1, B2, & B3 ................................................. PART ONE-C-6 C-3 Areas of occurrence of climatic categories C1, C2, & C3 ................................................. PART ONE-C-7

PART ONE ANNEX C TABLE

C-I Summary of climatic conditions and daily cycles of temperature, solar radiation, and relative humidity.......................................................................................................... PART ONE-C-8

PART TWO -- LABORATORY TEST METHODS Part Two-1

500.5 Low Pressure (Altitude) .................................................................................... 500.5-1 - 500.5-7

501.5 High Temperature ............................................................................................. 501.5-1 - 501.5-13

502.5 Low Temperature ............................................................................................. 502.5-1 - 502.5-9

503.5 Temperature Shock ........................................................................................... 503.5-1 - 503.5-13

504.1 Contamination by Fluids ................................................................................... 504.1-1- 504.1C-1

505.5 Solar Radiation (Sunshine) ................................................................................ 505.5-i - 505.5C-8

506.5 Rain ................................................................................................................. 506.5-1 - 506.5-11

507.5 Humidity .......................................................................................................... 507.5-1 - 507.5A-1

508.6 Fungus ............................................................................................................. 508.6-1 - 508.6B-1

509.5 Salt Fog ........................................................................................................... 509.5-1 - 509.5-10

510.5 Sand and Dust .................................................................................................. 510.5-1 - 510.5-13

511.5 Explosive Atmosphere ...................................................................................... 511.5-1 - 511.5-8

512.5 Immersion ........................................................................................................ 512.5-1 - 512.5-7

513.6 Acceleration ..................................................................................................... 513.6-1 - 513.6A-6

514.6 Vibration .......................................................................................................... 514.6-i - 514.6E-8

515.6 Acoustic Noise .................................................................................................. 515.6-1 - 515.6B-2

516.6 Shock ............................................................................................................... 516.6-i - 516.6C-4

517.1 Pyroshock ........................................................................................................ 517.1-i - 517.1-24

518.1 Acidic Atmosphere ........................................................................................... 518.1-1 - 518.1-7

519.6 Gunfire Shock .................................................................................................. 519.6-i - 519.6E-7

520.3 Temperature, Humidity, Vibration, and Altitude................................................. 520.3-i - 520.3-22

521.3 Icing/Freezing Rain ................................................................................................... 521.3-1 - 521.3-7

522.1 Ballistic Shock ................................................................................................. 522.1-1 - 522.1-14

523.3 Vibro-Acoustic/Temperature ............................................................................. 523.3-i - 523.3A-9 524 Freeze / Thaw ................................................................................................... 524-1 - 524-6 525 Time Waveform Replication ............................................................................. 525-i - 525B-11 526 Rail Impact ....................................................................................................... 526-1 - 526-7 527 Multi-Exciter .................................................................................................... 527-i - 527D-3 528 Mechanical Vibrations of Shipboard Equipment (Type I – Environmental and

Type II – Internally Excited 528-i - 528B-3

PART ONE-vii

PART ONE-viii

PART THREE -- WORLD CLIMATIC REGIONS – GUIDANCE

Paragraph Page

1. SCOPE .............................................................................................................................. PART THREE-1

2. DISTRIBUTION OF CLIMATIC DESIGN TYPES. ...................................................... PART THREE-3

3. NATURAL AND INDUCED ENVIRONMENT AND ASSOCIATED ELEMENTS ... PART THREE-8

4. ENVIRONMENT ELEMENTS - CLIMATIC DESIGN TYPES - NATURAL

AND INDUCED. ............................................................................................................ PART THREE-10

5. ADDITIONAL ENVIRONMENTAL ELEMENTS. ..................................................... PART THREE-26

6. REFERENCED / RELATED DOCUMENTS ................................................................ PART THREE-41

PART THREE

Annex

Page

A Weather and Climatic Extremes – A Brief Summary .................................................... PART THREE A-1 B Terminology ................................................................................................................... PART THREE B-1 C Comparison of AR 70-38 with MIL-HDBK-310 .......................................................... PART THREE C-1

PART ONE –

ENVIRONMENTAL ENGINEERING PROGRAM GUIDELINES

1. SCOPE.

1.1 Purpose.

This standard contains materiel acquisition program planning and engineering direction for considering the influences that environmental stresses have on materiel throughout all phases of its service life. It is important to note that this document does not impose design or test specifications. Rather, it describes the environmental tailoring process that results in realistic materiel designs and test methods based on materiel system performance requirements. Figure 1-1 summarizes this direction.

DEVELOP ENVIRONMENTAL ENGINEERING

MANAGEMENT PLAN (EEMP).

(TASK 401, REF PARAGRAPH 4.2.2.2)

SCHEDULE TASKS 402-406, PLUS TASK SUPPORT.

CONSIDER ALTERNATIVES TO TESTING HARDWARE.

PREPARE COST/BENEFIT/RISK ANALYSIS FOR

ALTERNATIVE(S) TO TESTING HARDWARE.

PREPARE LIFE CYCLE

ENVIRONMENTAL PROFILE (LCEP).

(TASK 402, REF PARAGRAPH 4.2.2.3.1)

PREPARE ENVIRONMENTAL

ISSUES/CRITERIA LIST (EICL).

(TASK 404, REF PARAGRAPH 4.2.2.3.3)

BASE ON RESULTS FROM TASKS 402 & 403.

LIST ALL TAILORED ISSUES & CRITERIA.

PROVIDE RATIONALE FOR THEIR

DERIVATIONS.

PREPARE DETAILED ENVIRONMENTAL

TEST PLAN (DETP).

(TASK 405, REF PARAGRAPH 4.2.2.4)

LABORATORY TEST PLANS: USE METHODS IN THIS

STANDARD, SELECTED & TAILORED TO THE

SPECIFIC TEST ITEM.

FIELD/FLEET TEST PLANS: DEVELOPMENT/

OPERATIONAL TEST AGENCIES USE THEIR OWN

PLAN REQUIREMENTS/FORMATS. TAILORED

TO THE SPECIFIC TEST ITEM.

ALTERNATIVE(S): EXPLAIN METHODOLOGY.

PERFORM ENVIRONMENTAL TESTS.

LABORATORY TESTS: USE METHODS IN THIS

STANDARD SELECTED & TAILORED TO THE

SPECIFIC TEST ITEM.

FIELD/FLEET TESTS: DEVELOPMENT/

OPERATIONAL TEST AGENCIES USE THEIR OWN

METHODS, SELECTED & TAILORED TO THE

SPECIFIC TEST ITEM.

ALTERNATIVE(S): EXECUTE METHODOLOGY.

PREPARE ENVIRONMENTAL

TEST REPORTS (ETR).

(TASK 406, REF PARAGRAPH 4.2.2.5)

LABORATORY TEST REPORTS: USE THE

FORMAT IN TASK 406.

FIELD/FLEET TEST REPORTS:

DEVELOPMENT/OPERATIONAL TEST

AGENCIES USE THEIR OWN TEST

REPORT REQUIREMENTS/FORMATS.

ALTERNATIVE(S): APPROPRIATE REPORT(S).

ENVIRONMENTAL TEST & EVALUATION MASTER PLAN (ETEMP)

(TASKS 402, & 404 REF PARAGRAPH 4.2.2.3)

NOTE 1:

NOTE 2:

NOTE 3:

COMPLETE TASK DESCRIPTIONS ARE IN

APPENDIX A.

INCLUDE EEMP & ETEMP WITH OTHER

SYSTEM PLANS & PROPOSALS TO

ALLOW REALISTIC COST ESTIMATING.

MAKE CONTRACT PROVISIONS FOR THE

EQUIPMENT SUPPLIER TO UPDATE EEMP &

ETEMP ON A PERIODIC BASIS AS ADDITIONAL

INFORMATION BECOMES AVAILABLE.

PREPARE OPERATIONAL ENVIRONMENT

DOCUMENTATION (OED).

(TASK 403, REF PARAGRAPH 4.2.2.3.2)

DOCUMENT REAL-WORLD PLATFORM

CHARACTERISTICS.

OBTAIN DATA FROM DATABASES, MODELS,

SIMULATIONS.

OBTAIN REMAINING DATA BY MEASURING

REALISTIC PLATFORM ENVIRONMENTS.

TEST

HARDWARE/

PROTOTYPES

? NO

YES

(SEE TASK 401

REF PARAGRAPHS

4.1.2, 4.2.2.1, &

APPENDIX B, PARA. F)

ALTERNATIVES.

SELECT ALTERNATIVE

(e.g., MODELING &

SIMULATION, COUPON

SAMPLES, SIMILARITY,

OTHER ANALYSES.)

SCHEDULE AND JUSTIFY

ALTERNATIVE(S) IN

TASK 401.

Figure 1-1. Environmental engineering program guide.

PART ONE-1

This document supports the functions of three different groups of personnel involved in the materiel acquisition process. Each of these groups is critical to the goal of successfully incorporating environmental considerations into materiel design, test, and evaluation. Although each group has different tasks to perform, none of these tasks can be isolated from the others in a successful acquisition program. As shown on Figure 1-2, this information is intended for the following:

a. Materiel acquisition program managers among whose responsibilities is ensuring materiel will function as required in intended operational environments. (See 4.1, below.)

b. Environmental engineering specialists (EES) who assist combat and materiel developers throughout the acquisition process to tailor their materiel designs and test designs to environmental stresses/constraints expected during the materiel's service life. (See 4.2, below.)

c. Design, test, and evaluation community analysts, engineers, and facility operators who meet user needs by focusing on tailored designs and tests. (See 4.3, below, and Part Two of this standard.)

• ENVIRONMENTAL ENGINEERING

MANAGEMENT PLAN

• LIFE CYCLE ENVIRONMENTAL

PROFILE

• OPERATIONAL ENVIRONMENTAL

DESIGN/TEST REQUIREMENTS

• ENVIRONMENTAL TEST

PLANS/REPORTS

• MISSION NEED STATEMENT

• OPERATIONAL REQUIREMENTS

DOCUMENT

• SYSTEM ENGINEERING

MANAGEMENT PLAN

• TEST & EVALUATION MASTER

PLAN

• ENGINEERING DESIGNS AND

SPECIFICATIONS

• MIL-STD-810G, PART 2

LABORATORY TEST METHODS

• NATURAL ENVIRONMENT

FIELD/FLEET TEST FACILITIES

AND PROCEDURES

MIL-STD-810G

ENVIRONMENTAL DESIGN/TEST

TAILORING GUIDANCE

DESIGN/TEST

ENGINEERS &

FACILITY OPERATORS

PROGRAM

MANAGER

Figure 1-2. Roles of acquisition personnel in the environmental design/test tailoring process.

ENVIRONMENTAL

ENGINEERING

SPECIALISTS

1.2 Application.

The tailoring process described in this standard (i.e., systematically considering detrimental effects that various environmental factors may have on a specific materiel system throughout its service life) applies throughout the materiel acquisition cycle to all materiel developed for military or commercial applications, including foreign and non-development item (NDI) procurements, procurements, or modifications of Allied systems or materiel, and cooperative development opportunities with one or more Allied nations to meet user and interoperability needs (DoDD 5000.1).

a. Part One lays out a disciplined, tailored approach for acquiring systems that will withstand the stresses of climatic, shock and vibration environments that they expect to see in their service lives. The basic process for acquiring materiel that satisfies users' needs from this environmental engineering viewpoint is depicted on Figure 1-1.

b. Part Two also is an integral part of the environmental tailoring process. It contains tailoring information, environmental stress data, and laboratory test methods. The environmental data contained in the methods may help, but should not be used exclusively to define environmental stresses that materiel will encounter throughout its service life. This will help engineers to tailor analyses and tests to specific materiel and its defined life cycle. It is not valid to call out all of the methods in this standard in

PART ONE-2

a blanket fashion for a materiel system; nor is it valid, once a method is determined appropriate, (except for Method 528) to regard the environmental stress data, test criteria, and procedures in the method as unalterable.

c. Part Three provides planning guidance for realistic consideration (starting points) of climatic conditions in the research, development, test, and evaluation (RDTE) of materiel and materials used throughout their life cycles in various climatic regions throughout the world. It is intended that this and related documents will help achieve the objective of developing materiel that will perform adequately under the environmental conditions likely to be found throughout its life cycle in the areas of intended use.

d. Guidance and test methods of this standard are intended to:

(1) Define environmental stress sequences, durations, and levels of materiel life cycles.

(2) Be used to develop analysis and test criteria tailored to the materiel and its environmental life cycle.

(3) Evaluate materiel performance when exposed to a life cycle of environmental stresses.

(4) Identify deficiencies, shortcomings, and defects in materiel design, materials, manufacturing processes, packaging techniques, and maintenance methods.

(5) Demonstrate compliance with contractual requirements.

1.3 Limitations.

Although environmental analysis, design analysis, and laboratory testing are valuable tools in the materiel acquisition process, there are inherent limitations in analysis and laboratory testing techniques that must be recognized. The methods in Part Two of this standard do not include many of the naturally-occurring forcing functions that may affect materiel performance or integrity in service use. Further, analytic and laboratory test methods are limited in their abilities to simulate synergistic or antagonistic stress combinations, dynamic (time sequence) stress applications, aging, and other potentially significant stress combinations present in natural field/fleet service environments. Use caution when defining and extrapolating analyses, test criteria, and results.

Part Two test methods purposely do not address the following but may, in some cases, be applied:

a. Electromagnetic interference (EMI).

b. Lightning and magnetic effects.

c. Nuclear, biological, chemical weapons or their effects.

d. Certain aspects of munitions and pyrotechnics safety testing.

e. Piece parts such as bolts, wires, transistors and integrated circuits.

f. Packaging performance or design.

g. Suitability of clothing or fabric items that are described in specific specifications.

h. Environmental stress screening (ESS) methods and procedures.

i. Reliability testing.

j. Safety testing.

PART ONE-3

2. APPLICABLE DOCUMENTS.

2.1 General.

The documents listed in this section are specified in sections 3, 4, or 5 of this standard. This section does not include documents cited in other sections of this standard or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of this standard, whether or not they are listed.

2.2 Government documents.

2.2.1 Specifications, standards, and handbooks.

The following specifications, standards, and handbooks form a part of this document to the extent specified herein.

Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract.

INTERNATIONAL STANDARDIZATION AGREEMENTS

QSTAG 360 Climatic Environmental Conditions Affecting the Design of Military Materiel

STANAG 4242 Vibration Tests for Munitions Carried in Tracked Vehicles

STANAG 4370 Environmental Testing

STANAG 4370 Allied Environmental Conditions and Test Publications (AECTP)

AECTP 100 Environmental Guidelines for Defence Materiel

AECTP 200 Environmental Conditions

AECTP 300 Climatic Environmental Tests

AECTP 400 Mechanical Environmental Tests

(Copies of these documents are available online at http://assist.daps.dla.mil/quicksearch/ or the North Atlantic Treaty Organization Online Library; or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094. The QSTAG may be requested via e-mail at elizabeth.bush@hqda.army.mil.)

DEPARTMENT OF DEFENSE SPECIFICATIONS

MIL-S-901 Shock Tests, H.I. (High Impact) Shipboard Machinery, Equipment, and Systems, Requirements for

DEPARTMENT OF DEFENSE STANDARDS

MIL-STD-167-1 Mechanical Vibrations of Shipboard Equipment (Type I – Environmental, and Type II – Internally Excited)

MIL-STD-331 Fuze and Fuze Components, Environmental and Performance Tests for

MIL-STD-882 Standard Practice for System Safety MIL-STD-2105 Hazard Assessment Tests for Non-Nuclear Munitions

DEPARTMENT OF DEFENSE HANDBOOKS

MIL-HDBK-310 Global Climatic Data for Developing Military Products

(Copies of these documents are available online at http://assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.)

PART ONE-4

http://assist.daps.dla.mil/online/start/ http://www.nato.int/docu/standard.htm http://www.nato.int/docu/standard.htm mailto:elizabeth.bush@hqda.army.mil http://assist.daps.dla.mil/online/start/

2.2.2 Other government documents, drawings, and publications.

The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract.

DEPARTMENT OF DEFENSE DIRECTIVES, INSTRUCTIONS, AND REGULATIONS

DoDD 5000.1 The Defense Acquisition System

(Copies of this document are available online at The Defense Technical Information Center Website and are available from DTIC Headquarters, 8725 John J. Kingman Rd., Ft. Belvoir VA 22060-6218; telephone (800) 225- 3842.)

DODI 5000.2 Operation of the Defense Acquisition System

(Copies of this document are available online at The Defense Technical Information Center Website and are available from DTIC Headquarters, 8725 John J. Kingman Rd., Ft. Belvoir VA 22060-6218; telephone (800) 225- 3842.)

AR 70-38 Research, Development, Test and Evaluation of Materiel for Extreme Climatic Conditions

(Copies of this Army Regulation are available online at The Army Publishing Directorate Website and are available from the US Army Publications Distribution Center, 1655 Woodson Rd., St Louis, MO 63114-6181; telephone [314] 263-7305.)

2.3 Non-Government publications.

The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract.

AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)/

NATIONAL CONFERENCE OF STANDARDS LABS (NCSL)

ANSI/NCSL Z540.1 General Requirements for Calibration Laboratories and Measuring and Test Equipment

(Copies of this document are available online at The NCSL International Website or from NCSL International, 2995 Wilderness Place, Suite 107, Boulder, Colorado 80301-5404; telephone (303) 440-3339.)

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO)

ISO 10012-1 Measurement Management Systems – Requirements for Measurement Processes and Measuring Equipment

(Copies of this document are available online at The ANSI E-standards Store and The International Organization for Standardization Website, or from ANSI, 25 West 43rd Street, 4th Floor, New York NY 10036-7406; telephone [212] 642-4900.)

2.4 Order of precedence.

Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.

PART ONE-5

Downloaded from http://www.everyspec.com http://www.dtic.mil/whs/directives/corres/dir.html http://www.dtic.mil/whs/directives/corres/ins1.html http://www.apd.army.mil/pdffiles/r70_38.pdf http://www.ncsli.org/publications/index.cfm http://webstore.ansi.org/ http://www.iso.org/iso/iso_catalogue.htm http://www.iso.org/iso/iso_catalogue.htm

3. DEFINITIONS.

3.1 Terms.

This terminology section is meant to define the general terminology as it is used in this standard. In certain cases the terminology use may be somewhat different from its use in the general engineering community. No attempt has been made to be complete, therefore limiting the glossary to such terms as are found in the standard and that are important to the application of the standard. Terminology unique to a particular method is defined, as appropriate, in that method.

NOTE: A continuation of this terminology section that contains terminology more closely related to the dynamic (mechanical) test methods such as vibration, shock, gunfire vibration, etc., is in Part One, Annex

a. Absolute humidity. The density of water in a particular volume of air. The most common units are grams per cubic meter, although any mass unit and any volume unit could be used. Warm air can hold more water vapor than cold air.

b. Accelerated test. A test designed to shorten the controlled environmental test time with respect to the service use time by increasing the frequency of occurrence, amplitude, duration, or any combination of these of environmental stresses that would be expected to occur during service use.

c. Aggravated test. A test in which one or more conditions are set at a more stressful level than the materiel will encounter during service use.

d. Ambient environment. The conditions, either outdoor or confined (e.g., temperature and humidity), that characterize the air or other medium that surrounds materiel.

e. Climatic categories. Specific types of world climates in which materiel is designed to withstand during operation, storage, and transit. See Part One, Annex C, Table C-I and Figure C-1.

f. Combat developer. Military specialist concerned with training, doctrine, and materiel needs documentation.

g. Critical threshold value. The level of an environment forcing function that degrades the capability of materiel significantly or requires degradation prevention measures be taken.

h. Cumulative effects. The collective consequences of environmental stresses during the life cycle of materiel.

i. Detailed Environmental Test Plan (DETP). Detailed plans for conducting environmental tests required to determine if the environmental criteria developed in Task 404 are met and their associated critical issues are satisfied, and to identify critical environmental threshold values for system effectiveness that may be evident during testing

j. Engineering judgment. Expert opinion based on engineering education and experience, especially in the area in which the judgment is made.

k. Environmental analysis. Technical activity covering an analytical description of the effects that various environments have on materiel, subsystems, and component effectiveness.

l. Environmental conditions. (See Forcing function (environment).)

m. Environmental engineering. The discipline of applying engineering practices to the effects that various environments have on materiel effectiveness.

n. Environmental engineering specialist (EES). A person or group of people skilled in one or more environmental engineering areas. Areas include, but are not necessarily limited to: natural and induced environments and their effects on materiel; expertise in measuring and analyzing in-service environmental conditions; formulating environmental test criteria; determining when environmental laboratory tests are appropriate/valid substitutes for natural in-service environmental tests; and evaluating the effects of specific environments on materiel. (See 4.2.)

o. Environmental test. A structured procedure to help determine the effects of natural or induced environments on materiel.

PART ONE-6

p. Environmental worthiness. The capability of materiel, subsystem, or component to perform its full array of intended functions in intended environments.

q. Equipment. For purposes of this standard (with the exception of Method 528), equipment includes the instrumentation, facilities, and support apparatus used to conduct or monitor tests. This does not include the test item itself or the materiel of which the test item is a sample or a part.

r. Exaggeration factors. The ratio of the test condition severity to the in-service severity and is used to develop a time compression factor for a particular failure mode.

s. Forcing function (environment). A natural or induced physical environmental stress condition on materiel that may affect its ability to function as intended or to withstand transit or storage during its service life. (Also referred to as an environmental condition or an environmental stress.)

t. Frequency of occurrence. Refers to the process used to differentiate among daily cycles of the climatic design types; i.e., the empirical result observed in real world data. It is based on tabulations and binning of hourly temperatures obtained over many years of observations at data reporting sites.

u. Hermetic seal. A permanent, air-tight seal.

v. Induced environment. An environmental condition that is predominantly man-made or generated by the materiel platform. Also, refers to any condition internal to materiel that results from the combination of natural environmental forcing functions and the physical/chemical characteristics of the materiel itself.

w. In-service use. The anticipated use of materiel during its intended service use life.

x. Integrated Product Team (IPT). A group of individuals from different professional disciplines and organizations (government and industry) who work together on a product from concept through production stages. Individuals who cover a discipline may change from stage to stage, but the discipline is covered, and the information pertinent to that discipline is passed to the succeeding team member(s) in that discipline.

y. Life Cycle Environmental Profile (LCEP). Design and test decision baseline document outlining real-world, platform-specific, environmental conditions that a specific materiel system or component will experience during service-related events (e.g., transportation, storage, operational deployment/use) from its release from manufacturing to the end of its useful life.

z. Life cycle profile. A time history of events and conditions associated with materiel from its release from manufacturing to its removal from service, including demilitarization. The life cycle should include the various phases materiel will encounter in its life, such as: packaging, handling, shipping, and storage prior to use; mission profiles while in use; phases between missions such as stand-by or storage, transfer to and from repair sites and alternate locations; and geographical locations of expected deployment.

aa. Material. The physical constituents comprising materiel, e.g., metals, plastics, cloth, paper, etc.

bb. Materiel. A commodity or set of commodities. With the exception of Method 528, a generic class of…