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APPENDIX A TO ANNEX B

Surface Vehicle and Ordnance systems - Zoning and Access

B.A.1 General

For large and/or complex Surface Vehicle and Ordnance systems, the use of zoning and access will assist in locating and identifying assemblies, access points, panels, etc within Data Modules/Technical publications and for maintenance planning.

B.A.2 Zoning Requirements

The requirement for application of zoning and access to Surface Vehicle and Ordnance systems will be determined on a project-specific basis, following the general rules detailed in S1000D Chapter 2.8.

B.A.2.1 Zone Identification

Zone charts and diagrams shall clearly indicate zone boundaries and their appropriate three digit reference numbers. A physical description of the zone and boundaries shall be provided. The zone boundaries shall embrace related structures, such as door frames, hatches and windows. A frame for a specific door, hatch or window shall not be divided between zones.

B.A.2.2 Major Zones

Major zones shall be allocated to major physical structures, bulkheads, etc and numbered using the left hand digit of the zone identification number (100, 200, 300 etc) as illustrated in the example at Table 5 and Figures 3 and 4, below:

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Major Zone 100

Major Zone 200

Major Zone 300

Major Zone 400

Major Zone 500

Figure 3 Major Zones

Major Zone 600

Figure 4 Major Zones

B.A.2.3 Sub-zones

Major zone areas (100, 200, 300 etc) shall be subdivided into sub-zones using the second digit of the allotted zone number (10, 20, 30 etc) as shown in the example at Table 6 and Figure 5, below.

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S u b - Z o n e 1 4 0

Figure 5 Sub Zones

B.A.2.4 Zones

Sub-zone areas (10, 20, 30 etc) shall, where necessary, be further subdivided into zones using the first digit of the allotted zone number (1, 2, 3 etc) as detailed in the example at Table 7 and Figure 6, below.

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Table 7 Zone Identification Numbers

Zone 411

Zone 412

Figure 6 Zones

B.A.3 Access

Access points shall be numbered in association with the zoning system detailed above. The access point identifier shall consist of the 3 digit zone number followed by a three letter access reference (letters I and O shall not be used).

B.A.3.1 Access Identifier

The access identifier shall comprise up to three characters to indicate primary, secondary and minor access points. Each character of the access reference number shall be allocated in a logical sequence (eg front to back, left to right, clockwise, etc), beginning with ‘A’ in each zone to identify discrete access points. The first character shall indicate main or primary access points/panels. Where a secondary access panel is mounted within a primary access panel, it shall be designated using the second character of the access reference number. Minor access points within a secondary access panel shall be indicated using the third character of the access identifier. An example of the application of access codes is shown at Figure 7.

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APPENDIX A TO ANNEX B (CONTINUED)

Access: 340 B

Figure 7 Access Codes

B.A.3.2 Location References

Location references such as ‘left’, ‘right’, ‘clockwise’, ‘upper’, etc shall apply to the system, as viewed from the rear of the platform, in the normal direction of travel. The position of mounted equipment/items, etc shall be identified by location and ‘clock position’ (eg crank case, 3 o’clock).

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APPENDIX A TO ANNEX B (CONCLUDED)

Collation Page

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