INPEC-CP- -01
Calibration
Procedure
Revision: 1
Page 1 of 7
Date: 20/01/2014
QUALITY CONTROL
PROCEDURE
Industrial projects company (INPEC)
CALIBRATION PROCEDURE
Copy No.
Controlled
Uncontrolled
0.0
First issue
01/09/2012
Name
REV.
COMMENTS
DATE
Sign/date
PREPARED BY
Name
Sign/date
APPROVED BY
Name
Sign/date
ACCEPTED BY
Calibration
Procedure
Table of Content
1)
Purpose
2)
Reference Tools And Equipment
3)
Internally Calibrated Equipment / Tools
4)
Internal Calibration Procedure
5)
Subcontractor Tools
6)
Abbreviations
7)
Attachments
INPEC-CP- -01
Page 2 of 7
Date: 20/01/2014
Revision: 1
Calibration
Procedure
INPEC-CP- -01
Revision: 1
Page 3 of 7
Date: 20/01/2014
1 Purpose.
1.1 This procedure establishes system for planning and performing
calibrations of measuring tools and equipment either internally
or externally calibrated according to National and International
standards and/or ASME requirements as appropriate.
1.2 This procedure is to be read and implemented together with
Quality Control Manual Sec. (10).
2 Reference Tools and Equipment.
2.1 Reference equipment/tools that will be used for internal
calibration and other equipment/tools that shall be calibrated
externally in a Recognized Calibration Society/Institute (RCS)
against relevant national or international standards are listed in
table
No. (1).
2.2 In case of conflict between the tolerances specified in table No.
(1), and the standards used by (RCS), the most restricted one
shall prevail.
2.3 Reference equipment/tools calibration intervals shall follow the
frequencies specified in table no. (1) And should be performed
in case of damage or deterioration raised against the required
accuracy level.
2.4 Calibration certificate of reference equipment/tools shall be
issued by the (RCS) and shall be maintained by the Quality
Assurance Engineer and approved by the Quality Assurance
Manager (QAM), this certificate shall at least specifies the
following details:-
The calibration date.
The serial no. of the equipment/tool under calibration.
A complete description of the calibration equipment/tool used for
calibration (including related description, serial no., manufacturer,
and calibration due date).
Reference calibration standard.
Calibration readings.
The recorded accuracy of equipment/tool under calibration.
2.5 Calibrated Reference equipment/tools shall only be used for
internal calibration purposes (not as daily working tools) and
shall be kept by the Quality Assurance Manager (QAM) in
suitable containers to protect them from being damaged.
2.6 Calibrated Reference equipment/tools shall be listed in the
Equipment Calibration Log (Exhibit No.16)
Calibration
Procedure
INPEC-CP- -01
Revision: 1
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Date: 20/01/2014
3 Internally Calibrated Equipment / Tools.
3.1 The working measuring equipment/tools should be internally
calibrated according to table (2) of this procedure, using the
calibrated reference equipment/tools as described in 2.5 above.
However, for any rezone QCM have the right to request external
calibration for these tools.
3.2 The working measuring equipment/tools calibration intervals
shall follow the frequencies specified in table no. (2) and should
be performed in case of damage or deterioration raised against
the required accuracy level.
3.3 Calibration report (Exhibit No.23) shall be issued by Quality
Assurance Engineer(QAE) and approved by the
Quality
Assurance Manager(QAM) for the internally calibrated
equipment/tools, this certificate shall at least specifies the
following details;
-
The calibration date.
The serial no. of the equipment/tool under calibration.
A complete description of the calibration equipment/tool used for
calibration (including serial no., manufacturer, and accuracy)
Reference to this Calibration procedure.
Calibration readings.
The recorded accuracy of equipment/tool under calibration.
3.4 Internally calibrated equipment/tools shall be listed in the
Equipment Calibration Log (Exhibit No.16)
3.5 A calibration label (Exhibit No.24) shall be completed and
tagged to the internally calibrated tool/equipment.
4 Internal Calibration Procedure.
4.1 General
-
Internal calibrations shall be performed by the Quality Assurance
Engineer or his designee.
Calibration frequencies shall follow the details specified in table no.
(2)
Internal calibration shall be performed in a controlled area where
requested temperature can be controlled.
The details specified in 3.3 above shall be recorded in the internal
calibration report.
The intended calibration range shall be recorded in the internal
calibration report before the start of calibration.
Both readings (Measured and reference) shall be measured carefully
and recorded in the internal calibration report.
The deviation shall be calculated and specified in the calibration
report.
Equipment/Tools that show an acceptable deviation shall be released
for usage.
Calibration
Procedure
-
INPEC-CP- -01
Revision: 1
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Date: 20/01/2014
Equipment/Tools that show non acceptable deviation shall be kept in
a controlled area with tags (HOLD) and sent for maintenance or
discarded.
4.2 Densitometer calibration procedure
-
-
5
6
Calibration of radiographic Densitometer shall be performed by RT
Level III or Level II examiner at least every 90 days during use.
Calibration of radiographic Densitometer shall be performed by using
a step tablet or a step wedge calibration film, traceable to a national
standard step tablet and having at least 5 steps with neutral
densities from at least 1.0 through 4.0
The calibration procedure shall follow ASME code; section V, T-262.
The Densitometer is acceptable if the density readings do not vary by
more than +0.05 density units from the actual density stated on the
national standard step tablet or step wedge calibration film.
Shift calibration verification checks shall be performed at the
beginning of each shift, after 8hr of continuous use, or after change
of apertures, whichever comes first.
Densitometer calibration readings shall be recorded in the
densitometer calibration log (Form no. QD-C-03) and shall be
approved by Quality Control Manager.
Shift verification readings required above do not have to be recorded.
Subcontractor tools
Calibration certificate for all tools of subcontractors should be
committed to this procedure
Abbreviations:
RCS = Recognized Calibration Society
QC = Quality Control Department
QA = Quality Assurance Department
RT = Radiographic Testing
MT = Magnetic Particle Testing
NS = National / International Standard(s)
QCM = Quality Control Manager
7 Attachments.
-
Equipment calibration log (Exhibit No.16).
Calibration label (Exhibit No.24).
Calibration report (Exhibit No.23).
Densitometer calibration log (Form no. QD-C-03).
INPEC-CP- -01
Calibration
Procedure
Revision: 1
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Date: 20/01/2014
Table (1)
S.N.
Equipment
Frequency
Tolerance
± 0.5 mm for
each 1 meter.
1
Steel ruler
One year
2
Block gauge
3
V1, V2 Calib. Block
RCS
One year
± 0.01 mm
RCS
One year
± 0.01 mm
RCS
RCS
RCS
4
Lifting weights (MT)
One year
Min. 4.5 Kg
for AC and
18Kg for DC
5
Clamp Ampere
One year
+ 10 %
Up to 50oC: +
10oC
50oC-100oC: +
15oC
100oC-600oC:
+ 20oC
± 1%
of full scale
By
6
Digital Thermometer
One year
RCS
7
Pressure gauge
One year
8
Square
One year
± 0.5o
RCS
9
UT Flow Detector
One year
ASME V T430
APP I&II
RCS
10
PWHT Recorder
6 months
± 10oC
RCS
11
Intensity
(Visible/Black) light
meter
One year
±5%
RCS
RCS
Remarks
Weights as per
MT procedure
Calibration
Procedure
INPEC-CP- -01
Revision: 1
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Date: 20/01/2014
Table (2)
Se
1
Equipment
Densitometer
Frequency
90 days
Tolerance
T-262 ASMEV
By
QA
Remarks
See Page 2
QA
Internally by
steel ruler
QA
Internally by
Block gauge
QA
Internally by
Block gauge
2
Tapes
6 Months
± 1mm/meter max.
3mm..
3
Vernier caliper
One year
± 0.1 mm
4
Micrometer
One year
± 0.1 mm
5
Magnetic yoke
6
X-ray film step
12 months
± 0.05
QA
By calibrated
Densitometer
7
Backing oven
thermometer
One year
± 5o C
Each 200 o C
QA
Internally by
thermometer
8
Hardness test
equipment
One year
± 6 BHN
QA
Internally by
block gauge
Strictly adhered to MT procedure
9
Hardness test
equipment
12 months
± 6 BHN
QA
Internally
calibrated
standard
block
10
UT Thick.
Gauge
One year
+ 0.3mm
QA
Internally by
block gauge