POM Case3-Process and Layout-Morton Salt-S271

Morton Salt Operations Tour

Introduction

  • Company Overview: Morton Salt is a subsidiary of Morton International.

    • Manufactures specialty chemicals, air bags, and salt products.

  • Facility Location: Silver Springs, New York, between Buffalo and Rochester.

    • One of six Morton salt-processing facilities in the U.S.

  • Employment: Approximately 200 employees ranging from unskilled to skilled.

  • Product Markets: Supplies salt products for water conditioning, grocery, industrial, and agricultural sectors.

    • Grocery business, which consists of 26 oz. round cans of iodized salt, accounts for about 15% of total production but is the most profitable.

Salt Production

  • Raw Material Acquisition: Salt is obtained by injecting water into salt caverns 2,400 feet underground.

    • Salt deposits dissolve in the water, creating brine.

  • Production Process:

    • Brine is pumped to the surface and converted into salt crystals.

    • Process involves boiling to evaporate liquid and remove moisture.

    • Continuous operation lasts about six weeks, starting at 45 tons/hour, decreasing to 75% output by week six due to scale build-up.

  • Maintenance: Production halts to maintain equipment and remove scale before resuming.

  • Storage and Shipping: Salt is stored in silos or shipped in bulk to industrial customers.

Round Can Production

  • Production Volume: Approximately 3.8 million round cans annually.

    • 70% for Morton label, 30% for private label.

  • Production Lines:

    • Two high-speed production lines, each producing 9,600 cans/hour (160 cans/minute).

    • Operated by a minimal workforce (18 workers for both lines).

  • Cans Manufacturing:

    • Made of cardboard with a plastic pour spout.

    • Cardboard sheets are glued, rolled into tubes, and cut into can-size pieces.

    • Equipment setup is standardized; production rates are fixed.

Assembly and Quality Control

  • Can Assembly Process:

    • Separate components are moved via conveyor belts for assembly and gluing.

    • Cans are filled with salt, the spout is added, and they are palletized for inventory.

  • Quality Assurance Efforts:

    • Salt purity is checked upon arrival; iodine and anti-caking compounds are analyzed.

    • Crystal size regulated by scraping screens while magnets remove fine metal pieces.

    • Contaminated salt is redirected to nonfood products.

    • Can quality is ensured through visual inspections of assembly, weights, and label alignment.

    • Equipment sensitive to defective cans, leading to production slowdowns but preventing defects.

    • High quality costs due to scrapped product, the need for inspectors, and extensive lab testing.

Production Planning and Inventory

  • Sales Capacity: The plant can sell all produced salt.

  • Scheduling Responsibilities: Production scheduler ensures proper salt distribution based on inventory levels and production capacities.

  • Storage Management: Ensures sufficient silo capacity for incoming production from brine production.

Equipment Maintenance and Repair

  • Equipment Age: Most machinery is from the 1950s, requiring considerable maintenance.

  • Breakdowns: Regular wear and tear lead to breakdowns, necessitating repairs.

    • Skilled workers in the plant's tool shop repair or fabricate parts due to unavailable replacements for the old equipment.

Questions for Review

  1. Describe Salt Production: Steps from brine production to finished round cans.

  2. Quality Assurance: Brief overview of quality checks in round can production.

  3. Reasons for Old Equipment: Discuss why the company might retain old processing equipment.

  4. Product-Process Spectrum: Where to place salt production within this spectrum.

  5. Annual Production Estimate: Calculate approximate tons of salt produced annually based on provided hints.

  6. Improvement Suggestions: Recommendations for operational enhancements in the plant.