Desperdício de Matéria-Prima por Amostragem Manual Inadequada (ABNT NBR 5426)
Definition
ABNT NBR 5426 specifies precise sample sizes based on batch volume and AQL (Acceptable Quality Level). Manual calculation and selection of samples introduces errors: oversized samples (too much material destroyed), under-sized samples (requiring re-sampling), and duplicate sampling due to lost documentation. Each error costs raw material waste and lab re-run fees.
Key Findings
- Financial Impact: R$ 25,000–70,000/year (estimated: 5–8 excess sampling cycles/year × R$ 4,000–10,000 material waste + lab re-test fees R$ 1,000–2,000 per cycle)
- Frequency: Monthly (12 cycles/year); correlates with supplier diversity and batch-size variability
- Root Cause: Manual AQL/sample size calculation; paper-based sample records; no digital batch-to-sample traceability; inconsistent training on ABNT NBR 5426 sample selection
Why This Matters
The Pitch: Rubber manufacturers in Brasil waste R$ 25,000–70,000 annually on excess sampling waste and repeat sampling. Automated sample-size calculation and digital tracking eliminate over-sampling errors.
Affected Stakeholders
Quality Assurance Technician, Laboratory Manager, Inventory/Warehouse Manager, Procurement (cost tracking)
Deep Analysis (Premium)
Financial Impact
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Current Workarounds
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Methodology & Sources
Data collected via OSINT from regulatory filings, industry audits, and verified case studies.
Evidence Sources:
- https://www.normaslegais.com.br/legislacao/Anexo_port_127_2009.htm
- https://pesquisa.in.gov.br/imprensa/servlet/INPDFViewer?jornal=515&pagina=131&data=08%2F05%2F2020&captchafield=firstAccess
- https://www.normas.com.br/visualizar/abnt-nbr-nm/29569/abnt-nbriso1795-borracha-natural-crua-e-borracha-sintetica-crua-procedimentos-para-amostragem-e-preparacao
Related Business Risks
Rejeição de Lote e Multa por Não-Conformidade com ABNT NBR 5426
Custos de Retrabalho e Rejeição de Proteínas em Borracha Natural (Certificação de Redução)
Atraso na Verificação de Conformidade SBAC (Gargalo Manual na Aceitação de Matéria-Prima)
Desperdício de Energia Elétrica e Impacto em Custos de Produção
Perda de Capacidade por Falhas de Equipamento Não Detectadas
Multas por Comercialização de Luvas Não Certificadas
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