sop for operation cleaning and calibration of bursting strength tester
1.0 OBJECTIVE
1.1 To describe a procedure for operating Cleaning & Calibration of Bursting Strength tester.
2.0 SCOPE
2.1 This procedure is applicable for operating Cleaning & Calibration of Bursting Strength tester to the Quality control department
3.0 RESPONSIBILITY
3.1 Officer/Executive – QC
4.0 ACCOUNTABILITY
4.1 Head – QC
5.0 PROCEDURE
5.1 Operating Procedure
5.1.1 Ensure that the area and instrument is clean and the pressure gauges are within due period of calibration.
5.1.2 Switch “ON” the instrument by “ON / OFF” switch.
5.1.3 Turn the cleaning wheel in anticlockwise direction.
5.1.4 Take the sample to be tested and place it over the diaphragm plate.
5.1.5 Clamp the sample by applying adequate pressure by clock wise turn of wheel.
5.1.6 Select the gauge to be used depending on the sample to be tested for lower value, like in case paper and low range board use
the lower range gauge by turning the rotary switch to gauge 2 positions. In case of heavy board turn back the switch to gauge 1 position.
5.1.7 Bring the lazy hand (red indicator of the gauge) to zero position.
5.1.8 Press the “PUSH FOR BURST” button and keep it pressed till the sample burst.
5.1.9 Record the maximum value in Kg/cm2
5.2 Calibration Procedure
5.2.1 Calibrate the gauge meter by external agency. Operate the instrument as per the operating procedure and
check the bursting strength of standard aluminum foil, which bursts at 5.1 Kg/cm2 & 12.0 Kg/cm2 Limit + 0.5%).
5.2.2 Calibration frequency quarterly.
5.3 Cleaning Procedure
5.3.1 After completion of the testing remove the sample from the instrument.
5.3.2 Switch off the mains.
5.3.3 Clean the outer surface of the instrument and gauge meter with dry Lint free cloth.
5.4 Precaution
5.4.1 Care has to be taken that the gauge is not used beyond their capacity as it damage the gauge.
5.4.2 It is hydraulic unit. Its accuracy depends upon a totally filled hydraulic system. Fluid from the system may be lost by
leaked, or diaphragm breakage. It is replaced by air from atmosphere. Such accumulated air in the system forms an air cushion,
which absorbs pressure and affects accuracy of the results erratically.
5.4.3 Take care that Zero setting of the scale does not disturb.
6.0 RELATED DOCUMENT
6.1 Nil
7.0 REFERENCE
7.1 In House
8.0 FORMATS
8.1 Bursting Strength Calibration Record
8.2 Bursting Strength Log Book
9.0 ABBREVIATIONS
9.1 QC : Quality Control
9.2 QA : Quality Assurance
9.3 QCA : Quality Control Analytical
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