VAF instruments OILCON MARK 6M, Техническое руководство

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6.7 INSTALLATION CHECKLIST
6.7.1 General installation checks
1. Is all pipework of correct materials and dimensions?
2. Is all pipework adequately supported?
3. Does the maximum distance from furthest sample probe to the skid give a system response
time of less than 40sec?
4. Is all pipework free from leaks?
5. Is the sample discharge line to the slop tank so arranged as to prevent free-fall into the tank?
6. Is the loop-seal (or non-return valve) of adequate height installed in the sample discharge
line to the slop tank?
7. Is the sample pump installed in such a position as to have a positive pressure on the suction
side of the pump at all times?
8. Is the relative position of the sample pump to the skid satisfactory?
9. Is the relative position of the skid to the EPU satisfactory?
10. Are the sample probes adequately supported and fitted with a manual stop valve as well as
the pneumatic select valve?
11. Are the sample probes located in a vertical section of pipe with the flow upwards or in a
horizontal section of pipe with the probe entering from the underside?
12. Are all discharges fitted with a sample probe?
13. Is the positioning of each sample probe at a location upstream of any recirculation line to the
slop tank?
14. Is the sample probe inserted a distance of ¼ of the pipe diameter and is the probe correctly
angled in the direction of the flow?
15. Is the capacity of the fresh water supply adequate?
16. Is the fresh water tank (if installed) made from non-corrosive material of adequate strength?
17. Is the fresh water tank (if installed) located a minimum of 6m above the skid?
18. Is the fresh water tank (if installed) fitted with an automatic filling valve of adequate size?
19. Are the EPU and the starter box mounted correctly?
20. Are all electrical cables supported adequately?
21. Are all signal cables segregated from AC power cables by at least 0.5m?
22. Are all cables terminated correctly?
23. Is the Main Control Unit mounted correctly?
24. Are all bulkhead penetrations gastight and of a type approved by the Administration?
25. If a starting interlock is required, has the method been approved by the classification
society?
6.7.2 Check of Flowmeter and automatic control
1. Does the flowmeter orifice plate have the required minimum of 10x pipe diameter upstream
and 5x pipe diameter downstream and has it been installed upstream of any recirculating
line to the slop tank?
2. Is the orifice plate located in a vertical section of the pipe with an upwards flow?
3. If the orifice plate is located in a horizontal section of pipe, have measures been taken to
ensure that the pipe will always be full of water, will not be subjected to siphoning and will
ensure sufficient back-pressure across the orifice?
4. Is positioning of the orifice plate pressure tapping correct at 1x pipe diameter upstream and
½ x pipe diameter downstream of the orifice plate?
5. Do the pressure sensing lines from the orifice plate pressure tapping fall continuously to the
differential pressure transmitter?
6. Is the automatic control of overboard discharge valve(s) and recirculation valve(s) installed
correctly?
7. Are manual stop valves fitted as required?