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Foreword
The Philippine National Standard (PNS) for Agricultural Machinery – Corn Mill –
Specifications (PNS/BAFS PAES 251:2018) has been prepared by the Technical
Working Group (TWG) for Silo and Corn Mill as per approved Department of
Agriculture Special Order (SO) No. 238 Series of 2017 and SO No. 554 Series of 2018.
This Standard cancels and replaces the provisions recommended by PAES 210:2000
Agricultural Machinery – Corn Mill – Specifications.
This edition includes the following significant changes compared to the previous
edition:
- Harmonization of the definitions of similar terms with PNS/BAFS 15;
- Addition of “tip cap” as one of the by-products in the terms and definitions
- Addition of Figures 1 and 2
- Revision of term “degerminator” to “degermer”;
- Addition of “Classifications” clause;
- Revision of “Materials of Construction” to “Fabrication Requirements” and
modification in the provision under it
- Addition of performance requirement that milling capacity shall meet
manufacturer’s specification;
- Deletion of performance requirement of “main product recovery, percent
minimum of the product input” and “grits of other sizes, percent, maximum”;
- Modification of maximum allowable noise level to 100 db(A)
- Revision of “Workmanship and Finish” to “Safety, Workmanship, and Finish”
and modifications in the provisions under it
- Revision of “Warranty for Construction and Durability” to “Warranty for
Fabrication and Services” and modification in the provision under it
- Modification in the provisions under “Maintenance and Operation”
- Modification in the provisions under “Marking and Labeling”
- Addition of Annex A
This document was drafted in accordance with the editorial rules of the ISO/IEC
Directives, Part 2.
The word “shall” is used to indicate mandatory requirements to conform to the
standard.
The word “should” is used to indicate that among several possibilities one is
recommended as particularly suitable without mentioning or excluding others.
