Хорошев / ИЛП_материал_маг_02.15 / Спецификация AECMA Specification 2000M / MIL-STD-1388-2B
.pdf
MIL-STD-1388-2B
APPENDIX E
092 DUTY POSITION REQUIRING A NEW |
1 9 X L - |
OR REVISED SKILL |
|
The title of an occupation for which a new SSC is required.
093 ECONOMIC ANALYSIS |
1 A F - |
A single letter which indicates whether a systematic approach to employing scarce resources in a most efficient and effective manner has been performed.
Analysis |
completed |
Y |
|
Analysis |
not |
completed |
N |
094 EDUCATIONAL |
QUALIFICATIONS |
6 5 X - - |
|
A narrative description identifying the educational prerequisites recommended to acquire the skill necessary to perform the task or attain the SSC (i.e., academic, subjects, specialized subjects, specialized degrees, and licenses, etc.)
095 ELEMENT INDICATOR |
1 A F - |
A single-position code to indicate whether or not the procedural step is a task element.
Task Element: The smallest logically and reasonably |
E |
|
definable unit of behavior required to complete |
|
|
a task or subtask. |
|
|
Not a Task Element |
|
B1ank |
096 END ITEM ACRONYM CODE (EIAC) |
1 0 X L - |
|
A code which uniquely identifies the system/equipment end item. This code will be assigned by the requiring authority. It will remain constant throughout the item’s life cycle (e.g. , TOW, PATRIOT, Tomahawk, Sparrow, and ALCM).
REFERENCED END ITEM ACRONYM CODE. An EIAC that contains referenced task information.
REFERENCED SUBTASK END ITEM ACRONYM CODE. An EIAC that contains referenced subtask information.
097ENGINEERING FAILURE MODE MEAN TIME BETWEEN 10 D - - FAILURE (EFM-MTBF)
That portion of an item’s MTBF (DED 229) that is attributable to an
Engineering Failure Mode (Failure Cause, DED 124). EFM-MTBF may be calculated by the following formula:
1 EFM-MTBF - FMR X FR
- 431 -
MIL-STD-1388-2B
APPENDIX E
Where: FMR - Failure Mode Ratio (DED 136) for the particular failure
mode under |
analysis. |
FR - Failure Rate for the LCN/ALC item under analysis. |
|
098 ENVIRONMENTAL HANDLING AND |
1 A F - |
AND TRANSPORTATION INDICATOR |
|
A code which indicates if an item will require special consideration to meet all environmental packaging, handling, storage, and transportation requirements.
Special consideration required |
Y |
No special consideration required |
N |
099 ENVIRONMENTAL/HAZARDOUS MATERIALS |
6 5 X L - |
CONSIDERATIONS |
|
A narrative description identifying any special environmental considerations when an item is being transported or being designed for transportation. For each item classified as a hazardous material state
the class of hazardous material as specified in Title 49, Code of Federal Regulations, parts 100-179, Transportation; AFR 71-4, Preparing Hazardous Materials for Military Air Shipments; International Maritime Good Code; or, International Civil Dangerous Goods by Air. Also state which of
these documents where used to acquire the code(s).
100 ESSENTIALITY CODE |
l N F - |
|
— |
A code to indicate the degree to which the failure of the part affects |
|
the ability of the end item to perform its intended operation. |
|
Failure to this part will render the end |
1 |
item inoperable. |
|
Failure to this part will not render the end |
|
item inoperable. |
|
Item does not qualify for the assignment
of code 1, but is needed for personnel safety.
Item does not qualify for assignment of
code 1, but is needed for legal, climatic, or other requirements peculiar to the planned operational environment of the end item.
Item does not qualify for the assignment of code 1, but is needed to prevent impairment of or the temporary reduction of operational effectiveness of the end item.
101 ESTIMATED PRICE 8 N R -
An estimated cost associated with each contractor-recommended requirement for budgeting and planning.
- 432 -
MIL-STD-1388-2B
APPENDIX E
102 ESTIMATED SALVAGE VALUE |
2 N R - |
The estimated end of life salvage value expressed as a percentage of the cost of the item.
103 EXTENDED UNIT PRICE 8 N R -
The total proposed or estimated price for an item.
price is calculated by multiplying the Total Quantity Recommended by the
Recurring |
Cost per unit, |
adding the |
Nonrecurring Cost to their |
product, then dividing the sum by the Total Quantity Recommended. |
|||
104 EXTERNAL |
OR INTERNAL LOAD |
INDICATOR |
l A F - |
A code which indicates how the aircraft/helicopter will transport the system/equipment.
External |
|
A |
Internal |
|
B |
Both external and |
internal |
c |
105 FACILITIES DESIGN |
CRITERIA |
6 5 X - - |
A narrative description identifying the facility design requirements necessary to support a specific task code applicable to the item under analysis. The design criteria are in terms such as axle loads, hoist requirements , and special handling, installation, storage, electrical, environmental, or service requirements.
106 FACILITIES INSTALLATION LEAD TIMES |
6 5 X - - |
A narrative description identifying facilities installation lead time schedules for contractor produced and installed support and test equipment or training devices. Lead times are referenced to system/equipment delivery schedules rather than to calendar dates (expressed in days, weeks , or months).
107 FACILITIES MAINTENANCE REQUIREMENTS |
6 5 X - - |
A narrative description identifying the maintenance concept for the system, e.g. , number of maintenance levels, and identifying the facilities that are required to maintain the system at the applicable maintenance levels.
108 FACILITIES REQUIREMENTS |
6 5 X - - |
A narrative description identifying the location of and the functions to be performed in the facility. Identifies environmental consideration affecting health, sanitation, or the surrounding community.
109 FACILITIES REQUIREMENTS FOR OPERATIONS |
6 5 X - - |
A narrative description identifying if the system is to be used or operated in garrison or on a day-to-day basis and if such, what facili-
- 433 -
MIL-STD-1388-2B
APPENDIX E
ties are needed to support the system in its daily use, i.e. , runways, helipads, clear zones, commercial power, operational pads, etc.
110 FACILITIES REQUIREMENTS FOR TRAINING |
6 5 X - - |
A narrative description identifying what facilities are required for training; classrooms, ranges, maneuver areas; and, facilities for simulators or other training devices.
111 FACILITIES UTILIZATION |
6 5 X - - |
A narrative description identifying the facility utilization rate in terms of number of tasks performed in the facility, training sessions, flying hours, number of maintenance hours, and other appropriate designators per specified time period.
112 FACILITY AREA |
6 N R - |
A numeric value describing the size of a designated space such as a shop, building, or land parcel in units contained in the associated Unit of Measure.
113 FACILITY BASELINE NARRATIVE CODE |
1 A F - |
A code that indicates the facility baseline narrative.
Facilities maintenance requirements, DED 107 |
A |
||
Facilities requirement for operations, DED 109 |
B |
||
Facility requirements for training, DED 110 |
c |
||
Facility |
requirements: |
special considerations, DED 120 |
D |
Facility |
requirements: |
supply/storage, DED 121 |
E |
114 FACILITY |
CAPABILITY |
6 5 X L - |
|
A narrative description identifying the capacity impact of the work load upon the facility.
115 FACILITY CATEGORY CODE |
6 N L - |
Provides a method for identifying and classifying real property from the initial planning stages through the complete cycle of programming, budgeting, accounting, and reporting in the areas of acquisition, construction, inventory, and maintenance. Every reportable item of real property is considered a facility. A parcel of land is a facility, as is each building, structure, and utility constructed on or in the land. The three-digit DOD Basic Category codes have been extended within the services by additional digits. The more definitive categorization is authorized by DOD for internal use within the DOD components (see
AR 415-28, NAVFAC P-72, or AFM 86-1 for codes).
BASELINE FACILITY CATEGORY CODE. The facility category code of the baseline facility.
- 434 -
|
|
MIL-STD-1388-2B |
|
|
|
APPENDIX |
E |
|
NEW OR MODIFIED FACILITY CATEGORY CODE. The facility category code of |
||
|
the new or modified facility. |
|
|
116 |
FACILITY |
CLASSES |
1 9 X L - |
|
This is the short name used in conjunction with the facility category |
||
|
code within AR 415-28, NAVFAC P-72, and AFM 86-1 for identifying facility |
||
|
real property. |
|
|
117 |
FACILITY |
LOCATION |
6 5 X L - |
A narrative description identifying the existing, new, or modified facility in terms of where the facility is located (e.g., depot name, building, post, bay, etc.).
118 FACILITY NAME |
3 2 X L - |
An identification of the name of the facility type that the system/ equipment requires.
BASELINE FACILITY NAME. The name of the baseline facility.
NEW OR MODIFIED FACILITY NAME. The name of the new or modified facility.
119 FACILITY NARMTIVE CODE |
1 A F - |
A code that indicates the facility narrative.
Facility capability, DED 114 |
|
||
Facility |
location, DED |
117 |
|
120 FACILITY |
REQUIREMENTS: |
SPECIAL |
6 5 X - - |
CONSIDERATIONS
A narrative description identifying any special considerations which impact facilities. It is used to describe special problems which apply to facilities requirements. Such items may consist of item weight, turning radius, environmental impacts, and security requirements. Aiso, information concerning facility requirement interrelationships which identifies advantages of close proximity to other facilities from a functional/ efficiency standpoint or site restrictions such as quantity distance criteria is identified.
121 FACILITY REQUIREMENTS: SUPPLY/ |
6 5 X - - |
STORAGE |
|
A narrative description identifying where the system will be stored, e.g., arms room, motor pool; if there are any special storage requirements for the system or components; e.g., security, environmental controls, warehouse, covered, uncovered, or if there is any impact in other storage facilities; e.g., petroleum, oil, lubricants, munitions.
122 FACILITY TASK AREA BREAKDOWN |
6 5 X - - |
- 435 -
MIL-STD-1388-2B
APPENDIX E
A narrative description identifying the breakdown of a facility area by individual tasks at the job level to determine maximum use of space.
123 FACILITY UNIT COST RATIONALE |
6 5 X - - |
A narrative description identifying variations to the appropriate unit cost contained in military construction pricing guides, in terms of differences because of unusual utilities requirements, or other special features. When a suitable unit cost is not available, provide a unit cost estimate for each facility item.
124 FAILURE CAUSE |
6 5 X - - |
All probable independent causes for each failure mode shall be identified and described. The failure causes within adjacent indenture levels
shall be considered. For example, failure causes at the third indenture level shall be considered when conducting a second indenture level analysis.
125 |
FAILURE/DAMAGE EFFECTS: |
END EFFECT |
6 5 X - - |
|
A narrative description identifying the consequences of each failure/ |
||
|
damage mode, on item operation, function, |
or status. Failure/damage ef- |
|
|
fects focus on the specific block diagram element, which is affected by |
||
|
the condition under consideration. End effects evaluate and define the |
||
|
total effect a failure/damage mode has on the operation, function, or |
||
|
status of the uppermost system. The effect of each failure/damage mode |
||
|
upon the essential functions(s) affecting system/equipment operating |
||
|
capability and mission completion capability shall be determined. The |
||
|
end effect described may be the result of a double failure. For example, |
||
|
failure of a safety device may result in a catastrophic end effect only |
||
|
in the event that both the prime function goes beyond the limit for which |
||
|
the safety device is set, |
and the safety |
device fails, |
126 |
FAILURE/DAMAGE EFFECTS: |
LOCAL |
6 5 X - - |
A narrative description identifying the consequences of each failure/ damage mode, on item operation, function, or status. Failure/damage effects focus on the specific block diagram element, which is affected by the condition under consideration. Local effects concentrate specifically on the impact a failure/damage mode has on the operation and function of the item in the indenture level under consideration. The consequences of each postulated failure/damage mode affecting the item shall be described along with any second order effects which result. Potential conditions where the failure/damage of one item results in a change of the conditional failure probability, or effect of a second item shall be identified. It is possible for the “local effect” to be the failure/ damage mode itself.
127 FAILURE/DAMAGE EFFECTS: NEXT HIGHER |
6 5 X - - |
A narrative description identifying the consequences of each failure/ damage mode, on item operation, function, or status. Failure/damage effects focus on the specific block diagram element, which is affected by
- 436 -
MIL-STD-1388-2B
APPENDIX E
the condition under consideration. These effects concentrate on the im
pact a failure/damage mode has on the operation and function of the items in the next higher indenture level above the indenture level under con-
sideration. The consequences of each failure/damage mode affecting the next higher indenture level shall be described.
128 FAILURE/DAMAGE MODE 65 X - -
1. Failure modes: The manner by which a failure occurs.
able failure modes for each indenture level analyzed shall be identified and described. Potential failure modes shall be determined by examination of item outputs and functional outputs identified in applicable block diagrams and schematics. Failure modes of the individual item function shall be postulated on the basis of the stated requirements in the system definition and the failure definitions included in the ground rules developed to support the Failure Modes, Effects, and Criticality Analysis (FMECA) approach. Where functions shown on a block diagram are performed by a replaceable module in the system, a separate Failure Modes and Effects Analysis (FMEA) shall be performed on the internal functions
of the |
module, |
viewing |
the module as a system. The effects of possible |
failure |
modes |
in the |
module inputs and outputs describe the failure modes |
of the module when it is viewed as an item within the system. Each |
|||
failure mode and output function is examined in relation to the following typical failure conditions:
a.Premature operations
b.Failure to operate at a prescribed time
c.Intermittent operation
d.Failure to cease operation at a prescribed time
e.Loss of output or failure during operation
f.Degraded output or operational capability
g.Other unique failure conditions, as applicable, based upon system characteristics and operational requirements or constraints
2. Damage Modes: A narrative description identifying all possible damage modes which could result from exposure to specified threat mechanism(s) determined through analysis of each subsystem, component, or part. The analysis includes both primary and secondary damage effects. Damage modes of individual item functions are postulated on the basis of the stated mission requirements, specified threats, and system descriptions. The effects of the possible damage modes include performance degradation, as well as total item failure. Each damage mode and function is examined in relation to the following typical damage conditions:
a.Penetrated
b.Severed
c.Shattered, cracked
d.Jammed
e.Deformed
f.Ignited, detonated
g.Burned out (i.e., electrical overload)
h.Burned through (i.e., threat-caused fires)
- 437 -
MIL-STD-1388-2B
APPENDIX E
129 FAILURE DETECTION METHOD |
6 5 X - - |
The method(s) by which occurrence of a specific failure mode is detected by the operator or maintenance technician. Describes warning devices, if applicable, and other indications which make evident to the operator or technician that a system/equipment has malfunctioned or failed. If no indication exists, states if the undetected failure will jeopardize the mission objectives or personnel safety, and if the undetected failure allows the system to remain operational in a safe state, explores possible resulting second failure situations. Proper correlation of a system malfunction or failure may require identification of normal, as well as abnormal indications. Normal indications are those that are evident to an operator when the system is operating normally. Abnormal indications are those that are evident to the operator when the system has malfunctioned or failed.
130 FAILURE EFFECT PROBABILITY (B) |
3 N R 2 |
The values are the conditional probability that the failure effect will result in the assigned Safety Hazard Severity Code (DED 354) given that the failure mode occurs. The values represent the analyst’s judgment as to the conditional probability the loss will occur, and are quantified in general accordance with the following:
Failure Effect |
Value |
|
|
Actual loss |
1.00 |
|
|
Probable |
loss |
0.10 |
to 1.00 |
Possible |
loss |
0.00 |
to 0.10 |
No effect |
|
0.00 |
|
131 FAILURE MODE AND RELIABILITY CENTERED |
1 A F - |
||
MAINTENANCE |
(RCM) NARRATIVE CODE |
|
|
A code that indicates the failure mode and RCM narrative. |
|||
Failure/damage mode effect end effect, DED 125 |
A |
||
Failure/damage mode effect local, DED 126 |
|
B |
|
Failure/damage mode effect next higher, DED 127 |
c |
||
Failure cause, DED 124 |
|
D |
|
Failure/damage mode, DED 128 |
|
E |
|
Failure mode detection method, DED 129 |
|
F |
|
Failure mode predictability, DED 138 |
|
G |
|
Failure mode remarks, DED 137 |
|
H |
|
Redesign recommendations, DED 426 |
|
I |
|
RCM age exploration, DED 343 |
|
J |
|
RCM reasoning, DED 346 |
|
K |
|
RCM redesign recommendations, DED 426 |
|
L |
|
132 FAILURE MODE |
CLASSIFICATION |
1 A F - |
|
A one-position code that categorizes the failure resulting from the identified failure mode as a technical or an operational failure.
- 438 -
|
|
|
|
MIL-STD-1388-2B |
|
|
|
|
|
APPENDIX |
E |
|
Technical |
|
T |
||
|
|
O |
|||
|
Operational |
|
|||
|
|
|
|||
133 |
FAILURE MODE CRITICALITY NUMBER |
1 0 N R 4 |
|||
|
(Cm) |
|
|
|
|
|
Cm is that portion of the criticality number for an item, which ac- |
||||
|
counts for a specific one of its failure modes under a particular |
||||
|
severity |
classification. |
For a particular severity classification |
||
|
and |
operational phase, the Cm for a failure mode may be calculated |
|||
|
with |
the |
following formula: |
|
|
|
Cm = |
(B a F t) (1,000,000) |
|
||
|
Where: |
|
|
||
|
|
|
Cm = Criticality Number for Failure Mode |
||
|
|
|
B = Failure Effect Probability, DED 130 |
||
|
|
|
a = Failure Mode Ratio, DED 136 |
||
|
|
|
F = Part Failure |
Rate, DED 140 |
|
|
|
|
t = Operating Time, DED 269 |
|
|
134 |
FAILURE MODE INDICATOR |
|
4 X F - |
||
The first position of the code describes whether the indicator is a failure mode (F) or damage mode (D). The next three positions of the code are alphanumeric, but not special characters. This four-position code links information on a table to a particular failure or damage mode.
FMT FAILURE MODE INDICATOR. A failure mode indicator against which either a corrective or preventive task is documented.
135 FAILURE MODE INDICATOR MISSION |
PHASE |
1 A F - |
CHARACTERISTICS NARRATIVE CODE |
|
|
A code that indicates the failure mode indicator mission phase characteristics narrative.
Compensating design provisions, DED 049
Compensating operator actions provisions, DED 050
136 FAILURE MODE RATIO (a) |
4 N R 3 |
A B
The fraction of the failure rate of the part, related to the particular failure mode under consideration. The failure mode ratio is the probability expressed as a decimal fraction that the part or item will fail in the identified mode. If all potential failure modes of a particular part or item are listed, the sum of the “ “ values for the part or item will equal one. Individual failure mode multipliers may be derived from failure rate source data or from test and operational data. If failure mode data are not available, the “ “ values represent the analyst’s judgment based upon an analysis of the item’s functions.
137 FAILURE MODE REMARKS |
6 5 X - - |
- 439 -
MIL-STD-1388-2B
APPENDIX E
Narrative clarification of data pertaining to failure modes.
138 FAILURE PREDICTABILITY |
6 5 X - - |
Information on known incipient failure indicators (e.g., operational performance variations), which are peculiar to the item failure trends and permit predicting failures in advance.
139 FAILURE PROBABILITY LEVEL |
1 A F - |
A single-position code identifying the qualitative level assigned to the failure probability of occurrence. The levels are as follows:
Level A - Frequent. |
A high probability of occurrences |
A |
|||||
during the item operating time interval. |
High |
|
|||||
probability may be defined as a single failure mode |
|
||||||
probability of occurrence equal to or greater than |
|
||||||
0.20 of the overall probability of failure during the |
|
||||||
item |
operating time |
interval. |
|
|
|
|
|
Level |
B - Reasonably |
Probable. |
A moderate |
B |
|||
probability of occurrence during the item |
|
|
|||||
operating time interval. |
Reasonably |
probable |
|
||||
may be defined as a single failure mode |
|
|
|||||
probability of occurrence which is 0.10 or more, |
|
||||||
but less than 0.20 of the overall probability |
|
||||||
of failure during the item operating time interval. |
|
||||||
Level |
C - Occasional. An |
occasional |
probability |
C |
|||
of occurrence during item operating time interval. |
|
||||||
Occasional probability may be defined as a single |
|
||||||
failure mode probability of occurrence which is |
|
||||||
0.01 or more, but less than 0.10 of the overall |
|
||||||
probability of failure during the item operating time. |
|
||||||
Level D - Remote. An unlikely probability of |
D |
||||||
occurrence during item operating time interval. |
|
||||||
Remote probability may be defined as a single failure |
|
||||||
mode probability of occurrence which is 0.001 or more, |
|
||||||
but less than 0.01 of the overall probability |
|
||||||
of failure during the item operating time. |
|
||||||
Level E - Extremely |
Unlikely. A failure whose |
E |
|||||
probability of occurrence is essentially zero during |
|
||||||
item |
operating time |
interval. |
Extremely |
unlikely |
|
||
may be defined as a single failure mode probability |
|
||||||
of occurrence, which is less than 0.001 of the overall |
|
||||||
probability of failure during the item |
|
|
|||||
operating time. |
|
|
|
|
|
|
|
140 FAILURE RATE |
|
|
|
|
1 0 D - - |
|
|
- 440 -