Change Impact
· Sample: subsea control module (fictional) · baseline Sample Rev A
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What is changing?
Description
Why (rationale)
Owner
Classification (pick all that apply; the engineer decides)
Soft / no FFF impact
Form
Fit
Function
Process
Software/configuration
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Which objects does it change directly? (Ctrl/Cmd-click for several)
CMP-01 · component · Subsea accumulator bank
CMP-02 · component · Directional control valve
CMP-03 · component · Accumulator mounting bracket
CMP-04 · component · SCM control firmware
DEC-01 · decision · Accumulator sizing basis
DEC-02 · decision · Bracket orientation
DOC-01 · document · SCM general arrangement drawing
DOC-02 · document · Accumulator datasheet
DOC-03 · document · Installation and operation manual
DOC-04 · document · Hydraulic schematic
IF-01 · interface · HPU to SCM hydraulic supply
IF-02 · interface · Accumulator to DCV hydraulic port
IF-03 · interface · Accumulator to bracket mechanical
IF-04 · interface · Firmware to DCV solenoid command
REQ-001 · requirement · Fail-safe valve closure
REQ-002 · requirement · Usable accumulator volume
REQ-003 · requirement · Rated for design water depth
REQ-004 · requirement · Hydraulic fluid cleanliness
REQ-005 · requirement · Module mass within lift limit
REQ-006 · requirement · Gas-side-up mounting
REQ-007 · requirement · Accumulator pre-charge pressure
SUB-01 · system · Hydraulic power unit (topside)
SUB-02 · system · Subsea control module
SUB-03 · system · Production tree valve actuators
SYS-01 · system · Subsea production control system
VER-01 · verification · FAT valve close-time test
VER-02 · verification · Accumulator drawdown test
VER-03 · verification · Hyperbaric chamber test
VER-04 · verification · Mounting orientation inspection
VER-05 · verification · Weight report
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