Something all at sea gets stuck with-- Chief officers have to go running with a vernier to measure PCD and count 'em holes.
A03153 Thu, 22 May XXX 14:49
From: XXXX - MASTER
Date: Thursday, May 22, XXX 2:12 PM Msg: A03153-53892
Path: \XXXX - MASTER\S E N T B O X####
Sub : XXX - Voyage 34-- ASA BOOM
dear XXX,
unless i am wrong -- there is nothing called ASA / BOOM.
instead it could be ANSI / CLASS#
on all chemical tankers you usually find ANSI B16.5 (American National
Standards Institute) --class 150# flanges.
other standards are used, e.g.
- british imperial flanges BS 10,
- metric flanges SABS 1123, BS 4504, DIN 2501,
- japanese and korean flanges JIS-B-2212, JIS-B-2214, KS-B-150
the following tables provide flange dimensions, diameters and drillings
for the most common sizes and ratings.
PROFORMA: REDUCER INCH / NO OF HOLE/ PCD IN MM
16" INCH/ 16 HOLES/ 540MM PCD
12"/ 12/ 430MM
10"/ 12/ 360MM
8"/ 8/ 300MM
6"/ 8/ 240MM
4"/ 8/ 170MM
ANSI class 150# ( INCH STUFF )
PROFORMA: Pipe---- PCD---No. of Bolts---Bolt Size---Flange OD
1/2"----2 3/8"----4 nos---1/2"---3 1/2"
1"----3 1/8"----4 nos---1/2"---4 1/4"
2"----4 3/4"----4 nos---5/8"---6"
4"----7 1/2"----8 nos---5/8"---9"
6"----9 1/2"----8 nos---3/4"---11"
8"----11 3/4"----8 nos---3/4"---13 1/2"
10"----14 1/4"----12 nos---7/8"---16"
12"----17"----12 nos---7/8"---19"
14"----18 3/4"----12 nos---1"---21"
16" --16 HOLES --540 MM PCD
keep this safely with you.
brgds
capt ajit vadakayil
MASTER / XXX
"much more- with much less"
..
CAPT AJIT VADAKAYIL
..
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