5 pressure on inspector 6 possibility of biased

Info icon This preview shows pages 251–253. Sign up to view the full content.

View Full Document Right Arrow Icon
5) Pressure on inspector. 6) Possibility of biased inspection because of worker. Suitability 1) Heavy products are produced. 2) Different work centres are integrated in continuous line layout. 20.3.12.2 Centralised Inspection Inspection is carried in a central place with all testing equipment; sensitive equipment is housed in air-conditioned area. Samples are brought to the inspection floor for checking. Centralised inspection may locate in one or more places in the manufacturing industry. Advantages 1) Greater degree of inspection due to sensitive equipment. 2) Less number of inspectors and tools. 3) Equipment needs less frequency of recalibration. 4) Cost of inspection is reduced. 5) Unbiased inspection. 6) Supervision of inspectors made possible. 7) No distraction to the inspector. Disadvantages 1) Defects of job are not revealed quickly for prevention. 2) Greater material handling. 3) High cost as products are subjected to production before they are prevented. 4) Greater delay in production.
Image of page 251

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
246 5) Inspection of heavy work not possible. 6) Production control work is more complicated. 7) Greater scrap. 20.3.12.3 Combined Inspection Combination of two methods whatever may be the method of inspection, whether floor or central. The main objective is to locate and prevent defect which may not repeat itself in subsequent operation to see whether any corrective measure is required and finally to maintain quality economically. 20.3.12.4 Functional Inspection These system only checks for the main function, the product is expected to perform. Thus an electrical motor can be checked for the specified speed and load characteristics. It does not reveal the variation of individual parts but can assure combined satisfactory performance of all parts put together. Both manufacturers and purchasers can do this, if large number of articles are needed at regular intervals. This is also called assembly inspection. 20.3.12.5 First Piece Or First-Off Inspections First piece of the shift or lot is inspected. This is particularly used where automatic machines are employed. Any discrepancy from the operator as machine tool can be checked to see that the product is within in control limits. Excepting for need for precautions for tool we are check and disturbance in machine set up, this yields good result if the operator is careful. 20.3.12.6 Pilot Piece Inspection This is done immediately after new design or product is developed. Manufacturer of product is done either on regular shop floor if production is not disturbed. If production is affected to a large extent, the product is manufactured in a pilot plant. This is suitable for mass production and products involving large number of components such as automobiles aeroplanes etc., and modification are design or manufacturing process is done until satisfactory performance is assured or established.
Image of page 252
Image of page 253
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern