Page 431 - Pipeline Pigging Technology

Pipeline Pigging Technology

PEAK PIGGING TRANSIT PEAK PIGGING
DIFF PRES SPOOL DIFF PRES FLOW IN
IN TRANSIT AVG VEL IN T- OPPOSITE
SPOOL(PSI) (FLOW RATE) (PSI) SIDE

5 4.1 FPS N/A 687 SCFM
(175 SCFM)

5 5.6 FPS N/A NO FLOW
(259 SCFM)

6 10.0 FPS N/A NO FLOW
(510 SCFM)

6 20.0 FPS N/A NO FLOW
(1,477 SCFM)

Table 9. TOW 'Redskin' foam pig (using air) .

PEAK PIGGING TRANSIT PEAK PIGGING
DIFF PRES SPOOL DIFF PRES FLOW IN
IN TRANSIT AVG VEL IN T- OPPOSITE
SPOOL(PSI) (FLOW RATE) (PSD SIDE

37 5.0 FPS N/A NO FLOW
(769 SCFM)

42 7.7 FPS N/A 2,107
(355 SCFM) SCFM

39 8.3 FPS N/A NO FLOW
(1,108 SCFM)

38 16.7 FPS N/A NO FLOW
(1,293 SCFM)

Table 10. S.U.N.Engineering 'squeegee' cup-type pig (using air).

412