title = "Surface Finishing Quality Standards and Inspection"

content = """
Surface finishing quality inspection ensures that completed parts meet both functional and aesthetic requirements before they leave the finishing department at Ridgecrest Metalworks. Inspection criteria are derived from engineering drawings, customer specifications, and applicable industry standards.

Visual inspection is the primary method for surface finish quality. Inspectors examine parts under adequate lighting (minimum 500 lux at the part surface, with additional directional light for specular surfaces) at a viewing distance of 500–600 mm. Customer-approved color standards, gloss level reference panels, and visual limit samples (showing acceptable and unacceptable conditions) are maintained at the inspection station and renewed when they become faded or damaged.

Common defects assessed during visual inspection:
- Runs and sags: Thick paint that has run before curing; evidence of excessive wet film applied or insufficient flash-off time
- Orange peel: Textured surface resembling citrus skin; caused by spray atomization issues or viscosity problems
- Fish eyes: Circular craters caused by silicone or oil contamination of the substrate or spray environment
- Pinholes and porosity: Small through-holes in the film from solvent entrapment or outgassing of the substrate
- Blistering: Raised bubbles in the film due to moisture or solvent trapped under the coating
- Holidays (bare spots): Areas where coating is absent; detected visually and with holiday detection testers on corrosion-critical parts
- Inclusions: Dirt, dust, or debris embedded in the film during application
- Discoloration or staining: Non-uniform color resulting from contamination or incorrect process

Gloss measurement using a glossmeter (60° geometry for most industrial coatings; 85° for low-gloss, 20° for high-gloss) provides objective comparison to the specified gloss level (e.g., 85 GU high-gloss, 35 GU semi-gloss, < 10 GU matte).

Holiday detection (electrical continuity testing) uses a wet sponge (low-voltage, up to 90 V DC) or spark tester (high-voltage, above 67.5 V/µm of coating thickness) to locate pinholes and holidays in coatings on conductive substrates. Required for immersion or buried pipe service but optional for general industrial coatings.

Acceptance/rejection decisions are made against written criteria. Borderline cases are escalated to the quality engineer. All inspected batches are logged with the inspector's ID, batch reference, inspection result, and any nonconformances raised.
"""

version = "0.0.1"
