Polypro Spec Micron

What is the first line of defense in material inspection?

Receiving and pre-install inspection.

What are the acceptance criteria for materials?

Must be new, from the same manufacturer, factory clean, and sealed.

What should be rejected during visual inspection?

Stains, oil, scratches, warping, or any anomaly near fusion ends.

What is the AQL target for lot inspection?

2.5 (MIL STD 105D).

What action should be taken if defects are found in a lot?

Inspect +10% more; if still failing, inspect 100% or reject the lot.

What is the acceptable IR fusion criteria?

Uniform double bead on OD, misalignment < 10%, no voids.

What are auto-reject conditions for fusion welds?

Missing bead, offset >10%, visible voids, slippage marks.

What must every weld have for traceability?

Unique weld ID, welder ID, date, machine ID, QA/QC signoff.

What is required for pipe installation QC checks?

Materials stored indoors, thermal stabilization, and sealed ends.

What is the maximum pressure increase during testing?

Max 5 psi/min with step increases of 50 psi.

What is the pass/fail criterion for pressure testing?

Hold for 1 hour with a pressure drop of < 5 psi.

What cleanliness practices are required for high purity?

Double-bagged components, capped pipe ends, gloves during install.

What are common QC fails in the field?

Slight weld irregularity, missing labels, wrong gasket type.

What is the 'PIPE-WELD-TEST' memory system?

Clean pipe, double bead weld, lowest rating test.