CIL Procedure

CAIRN INDIA LIMITED PROCEDURE

Standard Maintenance Procedure - Instrumentation : 8 channel Digital Temp Scanner.

Revision Number

0

Date of Issue

17.12.2009

Next Review

16.12.2010

Owner

Instrument Dept.

Application

Instrument Maintenance : MANGALA PROCESSING TERMINAL, RAJASTHAN OPEARATION

Classification

Internal

8CAIRN INDIA PROCESS

Standard Maintenance Procedure - Instrumentation: 8 Channel Digital Temp Scanner

Document Control No. MANGALA TRAIN-PRO-SMP-INST-042

SMP for 8-Channel Digital Temperature Scanner

Document Change History

Rev

Date

Section

Nature of Change

0

17.12.2009

Entire Document

For Approval

Distribution List

Copy Identification

Recipient

Issue Date

Master Copy

Information Management – RJON

Hard copy

Instrument Supdt. - RJON

Soft copy

Information Management - Gurgaon

Soft copy

Installation Manager - RJON

Soft copy

Field Maintenance Manager - RJON

Soft copy

Maintenance Manager - RJON

Table of Contents

Sr. No.

Description

Page No.

1

Purpose

5

2

Scope

5

3

HSE Requirement

5

3.1

Safety Aspects

5

3.2

Environmental Aspects

6

4

Task /Activity

7

5

Acceptance Criteria

8

6

Records

8

7

Replacement

8

8

References

8

9

Annexure-1

9

1. Purpose

The purpose of this Standard Maintenance Procedure is to define safe and best Calibration/ Maintenance procedure for digital temperature scanner.

2. Scope This procedure is applicable to all the digital temperature scanner installed at Mangala Processing Terminal Operation Facility for Preventive/Corrective Maintenance.

The Planned Maintenance Routines and their Frequencies as indicated in the

Cairn’s Generic Maintenance Strategy is as follows:

PMR Number

PMR Description

Frequency

NA

Digital temperature Scanner (8 channel) – Function Test & Calibration Checks

1 Year

3. HSE Requirement3.1 Safety Aspects

1. Obtain a work permit prior to commencing work.

2. Use appropriate hand tools

3. Use appropriate personal protective equipment while performing the work

4. Ensure that the particular Instrument is isolated properly and completely depressurised before starting the job.

.

3.2 Environmental Aspects

1. Store any faulty electronic card in designated place for final disposal as per waste management plan.

2. Dispose empty aerosol cans as per the waste management plan.

3. Collect any spillage / leakage of condensate during draining / depressurisation in containers for final disposal as per waste management plan.

4. Carry out thorough check of hand pumps / calibrators before calibration. Collect any hydraulic oil spills with containment tray for final disposal as per waste management plan.

5. Wipe oil spills with cotton waste. Store used / oil soaked cotton waste in designated bins for further disposal as per waste management plan.

6. Collect and store non functional spares and used consumables such as tubing, faulty transmitters, junction boxes, regulators, scrapped cable, wires, PVC material, etc in designated place for disposal as per Waste Management Plan.

7. Store waste paper, cardboards and packing materials generated in the nearby dust bins and send for incineration.

4. TASK / ACTIVITY:

TOOLS: IS Multimeter, Multi function calibrator & Hand tools.

4.1Procedure for 8 channel digital temperature scanner

1. Obtain Work Permit from Production Department. Override the trip if it is connected to any trip system.

2. Connect 230 V Ac 50 Hz power supply to Temperature scanner.

3. Keep calibrated channel in manual by Auto/Man switch.

4. Apply Resistance if RTD input or apply milivolts if Thermocouple input corresponding to lower range value and check indication.

5. If it is not matched then change scanner mode from run to program mode and calibrate channel by front panel key.

6. Apply Resistance if RTD input or apply milivolts if Thermocouple input corresponding to upper range value and check indication.

7. If it is not matched then change scanner mode from run to program mode and calibrate channel by front panel key.

8. Check low and high alarm set value by applying input to the scanner.

9. Two discrete LEDs are provided per channel for visual annunciation.

10. LED blinks on scanner for each channel for low or high value of temperature.

11. Low and high set alarm value, zero and span value, input type, is configurable for each channel Program mode is used to display/ change alarm limits,scan time and skip status of channels.

12. Configuration mode is used to change basic configuration of unit like scanner type, input type, set-point type, abnormal status, relay status, alarm latching, open sensor, hysteresis, zero and span value, decimal point position, password, serial number, serial output type, baud rate and open collector type.

13. Same way check and calibrate other channels.

14. Restored termination of scanner and put it in Auto mode

15. Check reading of all channels on scanner.

16. Check alarm LED’s of all channels on scanner, it should be normal.

17. Inform Production Department & Normalize the override if applicable.

Close the Work Permit.

5.ACCEPTANCE CRITERIA:

1. No leakage from the system. Normalise the trip override if applicable.

2. Digital temperature scanner should be accepted only if their accuracy & performance are meeting the requirement as per specified design data sheets given by OEM

6.RECORDS:

1. Maintenance activities shall be entered into Maintenance management system as applicable.

2. The Inspection details and the measured values shall be recorded in the approved Checklist for all the digital temperature scanner which are calibrated/ Checked. The report shall provide details of valid Certificates of standard calibrators.

Refer Annexure-1 for the Checklist.

7.REPLACEMENT:

Any replacement parts must be from Original Equipment Manufacturer (OEM) only.

8.REFERENCES:

1. Vendor Manual. – Digital temperature scanner, Make: Masibus, Model 85XX

9.Annexure:1

Digital temperature scanner Check list

1. Tag No: _______________________ 2. Service: ___________________________

3. Model No.:_____________________ 4. Serial No.__________________________

1. Range: ________________________

7. General cleanness: Yes: _____ No: _____

8. Rain/Sun protection in place: Yes: _____ No: _____

9. Connection tightness: Yes: _____ No: _____

10. Display check : Yes: _____ No: _____

Input

Temperature Indication (As observed)

Temperature Indication (As Left)

Deg C

Ch.1

Ch.2

Ch.3

Ch.4

Ch.5

Ch.6

Ch.7

Ch.8

Ch.1

Ch.2

Ch.3

Ch.4

Ch.5

Ch.6

Ch.7

Ch.8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Input

Current output (As observed)

Current output (As Left)

Deg C

Ch.1

Ch.2

Ch.3

Ch.4

Ch.5

Ch.6

Ch.7

Ch.8

Ch.1

Ch.2

Ch.3

Ch.4

Ch.5

Ch.6

Ch.7

Ch.8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12. Calibration check :

Checked By _______________________Verified By __________________

Date _____________________________ Date _______________________

Prepared by

Instrument Supdt.

Reviewed by

Manager Maintenance

Field Manager Maintenance

Approved by

Installation Manager

Designation

Date

Document Number

MANGALA TRAIN-PRO-SMP-INST-042

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