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DOC. NO. : KQKS/Site_Com-P-01
TANJUNG LANGSAT PORT SDN BHD
TANK COMMISSIONING PROCEDURE THE ENGINEERING, PROCUREMENT, CONSTRUCTION AND COMMISSIONING (EPCC) OF GASOLINE TANKS (RECONSTRUCTION) FOR TANJUNG LANGSAT PORT OIL TERMINAL
JOB NO: JN0901
DATE
DOC NO
DESCRIPTION
REV
P’PD
C’KD
REVIEW / APPROVAL
11-05-2010
KQKS/Site_Com-P-01
Tank Commissioning Procedure
0
YWL
SKE
TLP/TPM/RNZ
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DOC. NO. : KQKS/Site_Com-P-01
CONTENTS 1.
OBJECTIVE
2.
SCOPE
3.
DEFINITION
4.
PROCESS DATA
5.
CALIBRATION CABLE
6.
SAFE WORKING LEVEL
7.
GAUGING AND DIPPING
8.
CHECK VALVE POSITION
9.
ON RECEIPT OF PRODUCT
10.
CONTROL DOCUMENT
11.
DRAINING PROCEDURE
12.
FIGURE 11.1 TANK HEIGHT VS VOLUME 11.2 PRODUCT RECEIVING SEQUENCE
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DOC. NO. : KQKS/Site_Com-P-01 1. OBJECTIVE The purpose of this procedure is to define and guide terminal personal in commissioning of two (2) units of reconstructed tank T-1100A & T-1100B at Tanjung Langsat Port Oil Terminal, Pasir Gudang, Johor Darul Takzim. 2. SCOPE The following procedure are a guide only, they may not be applicable or practical at all terminal, the owner together with project manager and project consultant should ensure the specific procedure, to satisfy quality and quantity control and local requirement, are established and complied with. 3. DEFINITION •
Owner: Tanjung Langsat Port Sdn.Bhd. (TLP)
•
Project Manager: TPM Technopark Sdn.Bhd. (TPM)
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Project Consultant: RNZ Integrated (M) Sdn.Bhd.(RNZ)
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EPCC Contractor: Kejuruteraan QKS Sdn.Bhd. (KQKS)
4. PROCESS DATA •
Tank Diameter: 37.4 meter
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Tank Height: 20.12 meter
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Receiving Product: Gasoline
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Density: 0.7871 @ 15 oC
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Design Tank Pressure: 20 mbarg & 6 mbarg (Vacuum)
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Design Tank Temperature: 65oC
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Maximum Liquid Flow Rate (Receiving): 2,000 m3/hr
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Maximum tank volume: 20,290 m3
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Maximum tank filling height: 18.47 m
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DOC. NO. : KQKS/Site_Com-P-01 5. CALIBRATION CABLE Ensure that tanks are accurately calibrated in accordance to MS ISO Standard 7507 Part 2. The calibration report shall verified and endorsed by Sirim Berhad. These documents shall be placed at TPL terminal control room for easy reference. 6. SAFE WORKING LEVEL Ensure that tanks are never filled above maximum tank filling height. It is importance to determine a maximum tank filling height, that is how much product in the tank can safety hold with consideration of internal floating roof. Safe filling height for each tank shall be established by terminal superintendent in consultation with the project manager and project consultant. Level alarm High-high (LAHH) installed as overfill protection level requirement. 7. GAUGING AND DIPPING 7.1 Under normal circumstances use tank side gauge or remote gauge if fitted. 7.2 Perform manual dip at the roof dipping hatch to ensure that the level reading of radar gauges are accurate. Set the tank radar gauge to agree with the depth from the manual dip at the roof dipping hatch. 7.3 For the manual dips, the dip tapes and weights of approved pattern. Take tank dips with a standard steel tape or approved non-static electricity-generating material or coated tape fitted with a brass dip weight, both graduated in appropriate units. 8. CHECK VALVE POSITION Ensure that following tank nozzle and isolation gate valve in fully open / close position. •
All roof free vent – fully open.
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16” tank inlet valve – fully open.
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20” tank outlet valve – fully close
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12” tank circulation valve – fully close
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2” drain valve (to holding tank) – fully close
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DOC. NO. : KQKS/Site_Com-P-01 9. ON RECEIPT OF PRODUCT 9.1 Read the tank average temperature thermometer, take and record the temperature of the tank contents manually. 9.2 Read the tank-side gauge before receiving, and again just after staring receiving product. 9.3 Open the correct tank manifold valve (MOV). 9.4 Begin the receiving at a reduced rate until that the product is pumped into the correct tank. This will reduce the potential for the explosions caused by static electricity when product is pumped into the empty tank at a high rate. The flow rate shall be increased once the internal floating roof had fully floatation. Never operate liquid flow rate above maximum flow rate. 9.5 Take hourly tank-side gauge reading or remote tank gauging while receiving product and calculate the pumping rate. 9.6 Take upper, middle and lower shore tank samples during receiving. 9.7 Observe the internal floating roof, floatation during receiving product to check that it travel freely to its maximum height as mentioned in clause 6. 9.8 Reduce receiving flow rates when nearing LAHH to avoid overfilling and damage internal floating roof (internal floating roof will hit the tank roof structure) of the tanks. 9.9 Record the final tank-side gauge reading after receiving and setting of tank contents. Take the manual dip at the dipping hatch of the tank, at the same time as other i.e temperature and density. 9.10
Once completed receiving, fully close the correct valve at the valve manifold and tank (20” tank inlet isolation valve.).
9.11
Dip tanks and check for the water at bottom of tanks.
10. CONTROL DOCUMENT Record accurately all tank measurement, i.e. product dips, water dips (if required), densities and temperatures, preferably in bound books showing tank number, product held, date, time and location of measurement.
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DOC. NO. : KQKS/Site_Com-P-01 11. DRAINING PROCEDURE Water bottom should be avoided in all tanks on all grades. Water drain checks on tanks should be made whenever the presence of water is suspected. These checks, and removal of any water found, should be made by withdrawing at full flow all bottom drain to the holding tank. 12. FIGURE 12.1
TANK HEIGHT VS TANK VOLUME
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DOC. NO. : KQKS/Site_Com-P-01 12.2
PRODUCT RECEIVING SEQUENCE
BEFORE RECEIVING PRODUCT •
Determine the safety filling height of receiving tanks
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Check all tank roof free vent (Open)
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Check tank isolation valve positions
DURING RECEIVING PRODUCT •
Begin transfer at reduced rates
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Check receiving flow rates and tanks levels intervals
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Check IFR floatation
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Take product samples
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Reduce flow rate when nearing LAHH
AFTER RECEIVING PRODUCT •
Ensure valves are closed
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Record all tank measurement
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Check water contain at bottom tank
