GAS DETECTOR BY : SELAMAT SURIYADI

Content Of Presentation Introduction About Gas Detector Conclusion

Characteristic of Combustible gases Introduction Characteristic of Combustible gases 15 % LEL LEL Gas to Air mixture EXPLOSION 5 % GAS 100 % LEL 4 % GAS 80% LEL 3 % GAS 60 % LEL LEAN 2 % GAS 40% LEL 1% GAS 20% LEL 0 % LEL 0 % GAS

Combustible Gas Detection Two types of combustible gas detection are : • Catalytic • Infrared Absorption

Catalytic Combustible Gas Hydocarbon Oxidizes Heat Resistance Platinum Wheatstone Bridge Voltage Catalytic Combustible Gas

INFRARED DETECTORS REFERENCE RECEIVER MEASURING RECEIVER GAS IR TRANSMITTER RAY SEPARATOR

Advantages Of General Monitors Robust Simple to operate Easy to install, calibrate and use Easily calibrated individually to gases such as hydrogen which cannot be detected using

Use to indicating of presence combustible gas. CONCLUSION Use to indicating of presence combustible gas. Use for safety devices.

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Calibration of General Monitors Calibration may be carried out as follows : 1. “ - - -” 2. “AC” 3. “CP”. 4. “CC 5. “0”. Selamat Suriyadi MTT-14 instrument

Selamat Suriyadi MTT-14 instrument GENERAL MONITORS The General monitors model S4100C is highly reliable .It is designed to measure and display concentration of combustible gases in the range of : 0%-100%(LEL) Where : For CH4 , Alarm = 20% LEL And Action = 50% LEL (API) Selamat Suriyadi MTT-14 instrument

Selamat Suriyadi MTT-14 instrument ESD LOGIC GAS DETECTOR IN EDG AREA FSZ-41 Gas Detection in EDG Area FSZ-41 2oo3 Gas Detection in EDG Area FSZ-41 2oo3 Level 1 Stop and inhibit starting of EDG 7-EDG-3160 Trip instr. air compressor 7-X-3210-A Trip instr. air compressor 7-X-3210-B Trip N2 Generation Package 7-X-3300-B Trip N2 Generation Package 7-X-3300-A Level 2 Close phase-4 plant air utility distr. Selamat Suriyadi MTT-14 instrument

SPECIFICATION Type : Standard Industrial Hydrocarbon Sensor Model : S4100C Part.N 31100, Eexem II T5, Eexem II T4 Response Time : Typically 6-second time constant when exposed to 50% LEL of methane gas. Electric Classification : NEC and CSA ,class I ,Division I ,group B, C and D

VOTING SYSTEM 2oo3 CONDITION INHIBIT FAULT DETECT 1 2 3 4 5 6 7 8   CONDITION RESULT No INHIBIT FAULT DETECT TRIP NO TRIP GD 1 GD 2 GD 3 GD1 1 2 3 4 5 6 7 8

Selamat Suriyadi MTT-14 instrument Gas detector location and tag numbering There are 3 Gas Detectors,4 Heat Detectors and 2 Fire Detectors On EDG-1360 AREA FSZ-41 HD-9000 HD-9001 HD-9002 HD-9003 FD-9022 FD-9023 GD-9024 on H-6320 GD-9025 on P-6310A GD-9026 on P-6310B STANDART Hazardous Area Standards EN50014, EN50019, EN50028 Code of Protection EExem II T5 (– 50°C to + 55°C) EExem II T4 (– 50°C to + 70°C) Cable insulation rated to at least 110°C IP Rating: IP66/67 Application: Combustible Gas Monitor 2.2 Functional Measuring Range: 0-100% LEL Measuring Resolution: 1% LEL Over-range Indication: Display flashes for readings greater than 99% LEL, but continues to display gas concentration up to 120% LEL. Calibration Level: User selectable 25% - 90% LEL in 1% LEL increments A1 Trip level: User selectable 10% - 60% LEL in 1% LEL increments A1 Open Collector Output User selectable Energised/De-energised and Latching/Non-latching A2 Trip level: User Selectable 10% - 60% LEL in 1% LEL increments A2 Open Collector Output User selectable Energised/De-energised and Latching/Non-latching Fault Open Collector Output Normally Energised Analogue Output during Calibration User selectable 0.0 mA, 1.5 mA and 2.0 mA Modbus Baud Rate User selectable 2400, 4800, 9600 and 19200 Baud Modbus Format User selectable 1 / 2 stopbits, odd / even / no parity, 8 databits Modbus Node Address User selectable 1 - 255; Address 0 is recognised as broadcast mode Repeatability, Short Term: ± 5% LEL over 1 hour Repeatability, Long Term: ± 10% LEL over 3 months Accuracy (Linearity) ± 5% LEL Temperature Variation ± 10% LEL over Temperature Range (- 50°C to +70°C) Pressure Variation: ± 10% LEL (950 mBar - 1100 mBar) Humidity Variation: ± 10% LEL (20% RH - 90% RH) Power up Variation: < 3% LEL after 5 minutes Response Time (input step) T50 < 10 seconds 2.3 Mechanical Height excl. Sensor: 150mm (6”) Height incl. Sensor: 200mm (8”) Width: 150mm (6”) Depth: 95mm (3.75”) Weight including Sensor: 2.5kg (5.5lbs) Mounting holes: 4 x 7 mm (0.28”) dia holes Termination: EExe II Terminal Block 2.Installation a) Density of Gases to be Monitored — Lighter-than-air vapors/gases tend to rise, and heavier-than-air vapors/gases tend to settle. 12 ISA-RP12.13-Part II-1987 b) Air Movement — Air velocity and direction influence the dispersion of vapors/gases to be monitored. c) Potential Sources — The location and nature of the potential vapor/gas sources (e.g., pressure, amount, source temperature, and distance) need to be assessed. d) Ambient Temperature — Reference Section 9.8. e) Volatility — Liquids of lower volatility require detectors nearer the source. f) Vibration — Reference Section 9.7. g) Accessibility — Detector head locations should consider future maintenance and calibration requirements. h) Structural Arrangements — Structural arrangements (such as walls, troughs, or partitions) could allow vapor/gas to accumulate. i) Mechanical Damage and Contamination — Detectors should be installed in locations to preclude mechanical damage from normal operations (e.g., cranes, traffic, exhausts, and washdowns). Voting system 2oo3 Selamat Suriyadi MTT-14 instrument

General Monitors location Guidelines • Consider how the leaking gas will disperse. • Consider the emission temperature and specific gravity of the gas to be detected. • Select sensor accessories so as to protect the sensor against high wind velocities, rain, dust, hosing down and any other anticipated environmental hazards. Selamat Suriyadi MTT-14 instrument

SPECIFICATIONS

Selamat Suriyadi MTT-14 instrument Combustible Material A combustible material is a solid , liquid, or gas that may undergo the chemical reaction of combustion. Combustion occurs when an organic chemical is oxidized to produce energy, water, and carbon dioxide. Selamat Suriyadi MTT-14 instrument

F3 EEPROM Checksum Error there are nine Fault conditions that are monitored by the microprocessor, as follows: F2 Failed to Complete Calibration This Fault will occur if the unit is placed in the calibration mode and no gas has been applied within six minutes, or if gas has been left on for more than six minutes. ACTION – Remove gas, if present. Apply the magnet to the GM Logo on the cover to clear the fault. Attempt to calibrate. F3 EEPROM Checksum Error This fault indicates that the contents of the Model S4000C’s program memory have changed. This usually occurs, when powering the unit up after a lightning strike or large voltage transient on the power or signal lines to the unit. ACTION - The unit must be returned to the factory or authorized service center for repair. F4 Sensor Error This fault indicates that either one of the remote sensor leads is open or shorted, or that the sensor has drifted greater than –10%. ACTION - Check the integrity of all sensor connections, and ensure that the cable from the Model S4000C to the remote sensor is not damaged. If all sensor leads are connected properly, attempt to re-calibrate the unit. If calibration fails, replace the sensor and re-calibrate.

F5 Unused F6 Low Supply Voltage This fault occurs if the supply voltage at the S4000C drops below +18.5VDC. ACTION - Ensure that the supply voltage is at least +20VDC at the Model S4000C. F7 EEPROM Verification Failure This fault occurs when an attempt to verify the setup/calibration parameters just written to the EEPROM memory fails. ACTION - The unit must be returned to the factory or authorized service center for repair. F8 Failure to Complete Setup This fault occurs if the unit is left in setup mode for more than 6 minutes. ACTION - Exit setup mode. Enter setup mode again if it is necessary to change any user selectable options.

F9 Gas Check Period Exceeded If the Model S4000C is left in the gas check mode for more than six minutes without a Test Gas being applied or if test gas is left on the gas check mode for more than 6 minutes, this fault will occur. ACTION - Place the magnet over the GM Logo on the cover to return the unit to normal operation. F10 Switch Error This fault occurs if the remote reset, remote calibrate, or the magnetic switch are closed for more than two minutes. ACTION – Check the wiring on the remote reset and remote calibrate switches. Once the short circuit is cleared, the unit will return to normal operation. If the magnetic switch is shorted, the unit must be returned to the factory or authorized service center for service

Selamat Suriyadi MTT-14 instrument Calibration of General Monitors Calibration may be carried out as follows : 1. Ensure that the instrument is no combustible gas present at the sensor. 2. Place the magnet on the General Monitors Logo on the Nameplate. wait until “ - - -” for 5 seconds Remove the magnet.The sensor will then display “AC”. 3. Use Portable Purge calibrator with flow rate 300-400ml/min to apply gas at the required concentration level. When the instrument detect the gas it will display “CP”. Wait a seconds When the display become “CC”, and then remove the calibration gas. 4.as the remaining gas in the sensor disperses, the sensor will exit Calibration mode and return to normal operation. The display should read “0”. Selamat Suriyadi MTT-14 instrument

WORK PERMIT White - Work Location Yellow - Operating authority MAIN WORK PERMITS COMPLEMENTATRY PERMITS HOT WORK PERMIT COLD WORK PERMIT WORK PERMIT FORMS Certificate PERMITS FOR SPECIFIC WORK Isolations Electrical Safety Procedures Gas testing Entry into confined space Lifting Operations Hot Tapping Excavations Service Vessel Operations Diving Ionizing Radiations White - Work Location Yellow - Operating authority Blue - Control room Pink -Safety S/I