
JOB TITLE: Powder Prep Opr JOB GRADE: NE07
Safely operates and monitors the sifting process, which ensures that the raw materials are processed to the correct particle size specifications; safely operates and monitors the department's weighing line processes; replenishes and maintains sufficient levels of materials in the weighing silos and in the material staging areas; and safely operates and monitors the alumina and modori lines, thereby replenishing and maintaining sufficient levels of materials in the weighing silos; all of which enable the safe and efficient production of completed weigh batches, which are used in the manufacturing process
II. ESSENTIAL DUTIES AND RESPONSIBILITIES (The section is not intended to be an all-inclusive list and NGK Ceramics reserves the right to include other duties as assigned):
A. Checks the disintegrator oil levels and checks magnets at the beginning of each shift
B. Monitors weighing silo levels to determine shift production requirements
C. Verifies that the available alumina super sacks match the lot numbers on the Lot Designation Sheet (reports discrepancies to Technical Leader or Supervisor); and confirms that the panel display indicates the correct setup for the desired material silo
D. Confirms that the hopper is clean and empty; vacuums outside of super sacks to ensure that no debris or contaminants are introduced into the hoppers or weighing silos
E. Uses hoist to place sack on hopper; unties sack through safety door opening; and, empties sack into the hopper
F. Verifies that raw material tanks are empty before changing to another material
G. Confirms that the indicator lights on the computer panel display show that the correct silo is selected for the transport of the modori that is to be charged
H. Verifies the correct material by using: color-coded identification tags, color-coded sacks, color-coded stripe through modori pieces
I. Confirms that the disintegrator amperage is between 30-50 amps
J. Charges the correct material by emptying sacks into the hopper or by manually placing modori pieces into the crusher
K. Completes paperwork and enters the lot data into the company's information systems
A. Monitors weighing silo levels to determine shift production requirements
B. Verifies that the available raw material lot in the bulk silos match the lot numbers on the Lot Designation Sheet (reports discrepancies to Technical Leader or Supervisor)
C. Verifies that sifter screens are in good condition prior to processing
D. Charges and processes material lots in accordance with the company’s work instructions
E. Checks sifter screens’ condition after each processed lot
F. Obtains samples from processed lots for testing and lab analysis
G. Performs sieve residue tests on samples from each processed lot to ensure that the particle size results are within specifications
H. Notifies Technical Leader or Supervisor if sieve residue test results are outside of specifications
I. Inputs processed lot data & sieve residue test results into the company’s information systems
J. Takes samples to the Material Control Lab for analysis
K. Prepares transport setup to the correct weighing silo for Technical Leader’s approval and transportation
L. Builds, removes and replaces sifter screens and blades as required
A. Ensures weighing racks are clean; RFID (Radio Frequency Identification) tags are secured; and that super sacks are properly attached to the racks
B. Verifies the current weigh batch proportions before weighing batches; operates and monitors the weighing line process and reports errors or discrepancies to the Technical Leader or Supervisor
C. Checks weigh batch tickets to confirm that all weigh batches are within specifications; then initials weigh batch ticket and places it in the pouch of the appropriate weigh batch; staples ticket inside pouch
D. Writes the correct body name and batch numbers on the super sacks; and ties the tops of the super sacks securely
E. Enters data into the company's information systems
F. Obtains samples weekly for material control analysis and records the test results into the Infinity system
A. Works safely by avoiding forklifts; staying clear of forklift doors; using personnel doors when entering or exiting the buildings; and safely uses overhead hoists
B. Participates in PM (Preventive Maintenance), MMOL (Machine Maintenance Operator Leader) and G5S (Global 5S: Sort, Set in Order, Shine, Standardize, Sustain) activities as needed
C. Follows all EMS (Environmental Management System) procedures, including the disposal of waste and used materials
D. This job has no supervisory responsibilities.
Customer Focus. Environmental Awareness and Compliance. Functional & Technical Expertise and Computer Skills. Integrity and Accountability. Organizational Awareness. Respect and Humility. Safety Orientation. Teamwork.
A. Required Education and/or Experience
B. Required Language Skills
C. Required Mathematical Skills
D. Required Reasoning Ability
E. Preferred Qualifications
V. PHYSICAL DEMANDS (The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions and will be determined on a case by case basis):
A. Safety shoes must be worn while on NGK property.
B. Hearing protection is required in designated areas.
C. Safety glasses are required in designated areas.
D. Respirators are required in designated areas or under prescribed work conditions.
E. Regularly scheduled testing is performed for: lung capacity (i.e. spirometry test), hearing, and respirator fit.
A. This job description is not to be considered a written contract. Employment with NGK is at will. This means that the employee, as well as the company, is free to terminate the employment relationship at any time and for any reason not prohibited by law. Also, this job description is not designed to be a complete listing of the tasks, duties or responsibilities that are required of the employee.

NGK Corporation (NGK) is a leading company in the field of ceramics. Since its foundation in 1919, NGK has leveraged its unique ceramic technologies to deliver numerous groundbreaking products that address social challenges.
Today, NGK operates in more than 10 countries worldwide, with business areas including mobility, energy, IT, and industry. As one of the largest manufacturers of ceramic substrates for automotive catalytic converters, NGK is actively working to reduce environmental impact on a global scale.
Under its medium- to long-term vision, “NGK Group Vision Road to 2050,” the NGK Group is promoting the transformation of its business portfolio toward the Carbon Neutral (CN) and Digital Society (DS) fields.
In the CN field, the Group is advancing initiatives such as Direct Air Capture (DAC) technologies that capture CO₂ directly from the atmosphere.
In the DS field, NGK’s advanced product lineup includes the “EnerCera” series—compact, thin, high energy-density lithium-ion rechargeable batteries that support sustainable energy infrastructure—as well as translucent alumina wafers, key components gaining attention as indispensable materials for chiplet integration processes in semiconductor manufacturing.
Through the provision of innovative, high-quality products, NGK is committed to contributing to society. To help create a future in which people can coexist with nature, NGK will continue to develop and provide products that support social infrastructure while preserving the environment.