Page 428 - Pipeline Pigging Technology

Pigging through Yfittings

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

22 .84 FPS 37 400-550
(197 GPM) GPM

34 .88 FPS 25 NO FLOW
(204 GPM)
25 1.60 FPS 33 NO FLOW
(392 GPM)
38 2.16 FPS 28 100-200
(502 GPM) GPM

Table 6. TDW 'Redskin' foam pig and dual-diameter (14 x 10)
scraper pig in a pig train (using water).

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