Cameron Pow-R-Seal WKM 109 Посібник з монтажу, експлуатації та технічного обслуговування - Сторінка 9
Переглянути онлайн або завантажити pdf Посібник з монтажу, експлуатації та технічного обслуговування для Блок управління Cameron Pow-R-Seal WKM 109. Cameron Pow-R-Seal WKM 109 20 сторінок. Gate valve
Друкувати сторінкуHYDROSTATIC TESTING
Pow-R-Seal Gate Valves in liquid service must have a
body thermal relief system (needle valves, if present,
must be in the open position prior to operation of
valve) installed on the valve.
Caution: Failure to install a properly set body thermal
relief system on the valves in liquid service may cause
rupturing of the body resulting in catastrophic release
of pressure.
1.
The valve should be in a fully open position
when the injection of test fluid begins.
This will allow any pipeline debris to be
flushed through the valve bore and out of
the piping.
2.
Once the piping system has been purged of
debris and the system has been filled
completely with the test fluid, the gate
should be placed in the partially open
position to allow test fluid into the body cavity
of the valve.
3.
The valve is now ready to be hydrostatically
pressure tested.
Caution: Do not exceed pressures listed below. Test
pressures are per API 6D and are not operating
pressures. The Maximum Allowable Operating Pres-
sure (MAOP) is marked on the nameplate.
Pressure
Hydrostatic Shell
Class
psig (barg)
150
425 (29.3)
300
1100 (75.9)
600
2175 (150)
900
3250 (224)
1500
5400 (372)
2500
9000 (620)
Installation, Operation and Maintenance Manual
4.
5.
6.
7.
Hydrostatic Seat
psig (barg)
300 (20.7)
800 (55.2)
1600 (110)
2400 (166)
4000 (275)
6600 (455)
9
E N G I N E E R E D & P R O C E S S V A L V E S
Upon completion of the hydrostatic testing,
the valve should be returned to the fully open
position before removing the test fluid from
the piping system. The test fluid in the
body cavity can be drained through the body
drain port located in the lower portion of the
valve body. (See Draining Valve, Page 13).
Close the valve body bleed fitting and return
the valve to the required operating position,
either fully open or fully closed.
If the valve is equipped with seat injection
fittings, the valve seat pockets should be filled
with an approved valve lubricant to displace
any test fluid from behind the seats.
Some WKM T-11 or T-102 trim valves
having Vee packing should be repacked after
hydrostatic testing with water. Follow the
procedure in the Troubleshooting section of
this manual for repacking the stem seal. Use
WKM #113 or Jim Ray TIGER PAK FF
plastic packing.
02/2011 / IOM-WKM-GATE-PRS-01