Illustrative c5 fluid release example
6.0 ppm assumed fresh-fill chloride: hold against <5.0 ppmmodeled
| Value kind | modeled — Interpret this value according to its displayed kind, scope, source, and as-of date. |
|---|---|
| Scope | Assume a first-fill PG formulation approved for the complete wetted-material list. For this teaching procurement schedule adopt fresh-fluid chloride <5.0 ppm from Table 1 of the linked OCP PG guidance, and hypothetical certificate/lab inputs: correct product and lot, PG concentration 26.0% by volume, pH 8.7, chloride 6.0 ppm, clear appearance, and all other agreed fresh-fluid tests satisfactory. The concentration and pH are assumed inside this formulation’s accepted limits; they do not approve other formulations or alloys. No supplier certificate or sample result has actually been obtained. |
| As of | 2026-09 |
| Source | Guide calculation from expressly assumed teaching inputs. Primary reference supplies method or equipment context, not evidence that this design was built or tested. |
| Derivation | The batch fails because 6.0 ppm is not below 5.0 ppm. Hold first fill, have the fluid supplier investigate the water/formulation source and supply or correct the batch, then obtain a conforming resample. The crossover is chloride strictly below 5.0 ppm; an exact 5.0 ppm result also fails the adopted “less than” criterion. Measurement uncertainty and the decision rule must be agreed before a real borderline result can be released. Do not substitute the looser in-service chloride limit from OCP Table 4 for this fresh-fluid decision. The fluid owner retains the formulation/lot, approved wetted list, sampling location, test method, units and acceptance criteria alongside the certificate and lab report. Establish the baseline at fill and resample after incompatible make-up, repairs or adverse trends; the supplier sets the ongoing analytical interval and additive corrections. OCP PG guidance, Tables 1 and 4 and §6.3 distinguishes fresh and operating fluid. This chapter owns the fluid envelope; 13.5 receives its release record and 14.5 executes the maintenance program. |
| Review | checking…cadence-derived review 2027-01-03 · standard cadence |
| Recorded changes | none recorded |
| Claim id | p5-c5-fluid-release-example |
Where the guide uses it
Not quoted in a chapter yet; it is kept in the curated register.
← Full numbers register — every date-stamped figure in the guide, with revision history.