Material Consumption Pipeline

Material Consumption Pipeline is the generic designation for any single installed line of the Material Consumption Pipelines, the network of logistical systems authorized under Material Coherence Attestation (MCA-57) for the removal and dissolution of catalogued material deemed incompatible with adjacent holdings or architectural integrity. Where the plural denotes the whole apparatus — its oversight, its recensions, its quarrels — a "pipeline" properly refers to one line, at one floor, on one register. The distinction is upheld, though not consistently, by the Office of Material Coherence and the Bureau of Material Cohesion, which jointly administer Procedural Consumption under Section 8.

Lines are numbered by installation order rather than by floor, so that Pipeline 4 may stand on Floor 900 and Pipeline 900 on Floor 4. A line's plate is stamped at the intake collar with its number, its host floor, its sanctioned dissolution point, and the standard caution that the plate is not part of the line and must not be consumed with it.

Anatomy of a line

A conforming pipeline has four stations in fixed order: intake collar, attestation eye, transport run, and dissolution point. The intake collar accepts material at one size only, determined at installation and altered only by formal amendment; oversize material must be reduced by hand at the collar and is not the line's concern thereafter. The attestation eye — a small glass port, unglazed on the interior — admits the operator to confirm that the material being drawn matches the material attested on the accompanying schedule. The transport run is the longest station and the least often inspected. The dissolution point may be of any sanctioned type, the most frequently cited being the Chronophage Candle on Floor -7α.

One line of the sixty-odd on record, Pipeline 41, terminates in a Candle on Floor -7α and has no transport run at all, the intake collar opening some four feet from the flame. Its plate was struck in error in the year of the Third Recension and has never been corrected, on the ground that correcting it would require the line to be shut, and shutting it would require a form nobody has filed since.

Consumption and the Culinary sub-class

Under the material classification upheld by the Office of Material Coherence, a pipeline's ordinary charge is inert catalogued matter: spoiled labels, superseded indexes, wicking that has lost its draw. A specialized subset of pipeline work, governed by culinary paradox law, extends the charge to Culinary Paradoxes and to Culinary Non-Matter, a classification of which the lines are the sole consumers. A pipeline may thus be found dissolving a broth that is also a document, or a flavor with no vessel. Operators are cautioned that the classification is one thing and the contents another: the eye does not certify what is in the material, only that it is the material named on the schedule.

"The line is not held responsible for the contents of a category. It is held responsible for the category of the contents."

— Office of Material Coherence, Circular 12, para. 3

The Pipeline of Recursive Doubt

The best documented single line is the Pipeline of Recursive Doubt, a system of considerable length whose intake draws material the attestation eye refuses to certify twice. Its processed residue is not dissolved but passed to the pulp drains, where it is metabolised by the Doubt-Ash trees into a fibrous slurry of low archival value. The Recursive Doubt line is exceptional in that its schedule is written in the future tense, a convention introduced by the Bureau of Material Cohesion in its fifteenth year and never rescinded. Its operators report the schedule to be accurate. Inspectors report no way to check it.

Governance and the standing quarrel

No line may operate without an attestation in force, and no attestation may be renewed without a demonstration of qualifying traits in the Quarterly Review of Material Coherence. The Bureau of Material Cohesion maintains that the Review's findings bind the line directly and that its own seal is sufficient to recommission a dormant run. The Office of Material Coherence answers that the Bureau's reading of Section 8 "confuses the attestation with the attesting", and that a recommissioned line lacking the Office's counter-seal is a line operated on one hand. The dispute dates from the winter of the year of the Concordance of Anterior Weights and has generated forty-one annexes; the lines have run throughout, on the reasoning that a dispute between offices is a question of paper and not of flow.

The conflict acquired a name in the matter of clerk Auda Remmet, Script-Moth keeper to the third transport run of Pipeline 17, who in the winter of that dispute tendered her renewal under the Bureau's seal alone and had her schedule torn at the eye of the line by an Office inspector, Resource Requisition being, in his finding, an attestation of supply and not a true attestation at all. Remmet's formal objection — that a keeper has no vote in which seal her line is asked to answer to — runs to eleven leaves and has never been ruled upon. Her line ran either way. She has since refused both seals and drawn her renewals from the Office of Material Coherence by hand.

Residue and oversight

What a pipeline leaves behind is adjudicated as Material Residual and is subject to the same attestation as the material drawn in, at half fee. Anomalous residue — residue that attests to itself, or that the review panel declines to name — falls to the The Review Panel of Material Disqualification and, in rare cases, to the Material Cohesion attachment under Absorptive Theory. Material Anchors are forbidden from entering a transport run; Material Spiralists may enter only with a full-length guide cord, of stout weave, which is not supplied by the line.

Expeditions below Floor -40 report pipelines whose intake collars face inward and whose plates bear no number at all. The Concordance of Unlisted Installations declines to treat these as lines on the ground that a line unnumbered cannot be attested, and that an unattested line is a conduit. The distinction is not explained further, and the expeditions have not asked.