Requirements traceability matrix

Requirement to deliverable and back again. The two directions fail differently and both are shown.

Demonstration project - no figure here describes a real facilityChanges are not saved

Why

A requirement counts as traced only when the deliverable answering it can actually be approved. An answer nobody has accepted is not an answer.

Writes are validated against the engineering rules and then refused, because no database has been configured for this environment.

Requirements

Traced to an approved deliverable

Answered by a draft

Answered by nothing

Requirement to deliverable
Requirement	What it requires	Source	Answered by
REQ-A-014	The hydrostatic test pressure shall be not less than 1.5 times the design pressure of the line under test.	ZRF-CTR-APX-A	ZRF-HTP-0015	Drafted, not approved	Open
REQ-A-021	The Contractor shall submit every deliverable listed in the master document register for Company review before construction.	ZRF-CTR-APX-A	ZRF-ITP-0003, ZRF-CMP-0007, ZRF-PEP-0001, ZRF-PEP-0001-RA	Traced	Open
REQ-D-003	An inspection and test plan shall be submitted for each work package, identifying every hold point and witness point.	ZRF-CTR-APX-D	ZRF-ITP-0008, ZRF-ITP-0003	Traced	Open
REQ-D-011	Pressure testing shall be witnessed by the Company representative and the record signed before reinstatement.	ZRF-CTR-APX-D	ZRF-HTP-0015	Drafted, not approved	Open
REQ-S-3300-18	The test medium shall be filtered potable water with a chloride content of not more than 30 ppm.	ZRF-SPC-3300	ZRF-HTP-0015	Drafted, not approved	Open
REQ-S-3300-22	The test pressure shall be held for not less than 2 hours with no visible leakage and no pressure loss.	ZRF-SPC-3300	ZRF-HTP-0015	Drafted, not approved	Open
REQ-S-4100-07	Every instrument loop shall be checked from the field element to the control system indication before commissioning.	ZRF-SPC-4100	ZRF-LCR-0021	Drafted, not approved	Open
REQ-ISO-15649-9	Pressure testing requirements for piping systems. Clause text not reproduced: no licensed copy is held.	ISO 15649 not held	ZRF-HTP-0015	Drafted, not approved	Open
REQ-SUG-001	Consider recording ambient temperature at the start and end of the hold period, to explain a pressure change that is thermal rather than a leak.	ZRF-SPC-3300	nothing	Unanswered	Start one

Both directions, because they fail differently

Forward finds the requirement nothing answers, which surfaces at handover. Backward finds the deliverable that answers nothing, which usually means somebody wrote a document the contract never asked for.

Drafted is not traced

A requirement answered by a draft with an open blocking comment is not traced. The answer exists and nobody has accepted it, and a matrix that counted it as traced would report compliance that has not been established.

A source the project does not hold

A requirement citing a standard the project holds no copy of is shown with its source marked not held. The requirement is still real - somebody wrote it down - but nobody can check it against the clause it claims to come from.