API MPMS 17.1:2008 pdf download

API MPMS 17.1:2008 pdf download.Manual of Petroleum Measurement Standards Chapter 17- -Marine Measurement Section 1- -Guidelines for Marine Cargo Inspection.
list
The leaning or dination of a vessel, expressed in degrees port or starboard away from the vertical.
3.17
list correction
The correction applied to the observed gauge or observed volume when a vessel is listing, provided that liquid s in contact with all bulkheads In the tank. Correction for list may be made by reference to the vessels list correction tables for each tank or by mathematical calculations.
3.18
load on top
Defined as both a procedure and a practice.
3.19
practice
Load on top is the act of commingling on board quantity with cargo being loaded.
3.20
procedure
Load on top is the shipboard procedure of collecting and settling water and oil mixtures, resulting from ballasting and tank cleaning operations (usually in a special slop tank or tanks), and subsequently loading cargo on top of slops and pumping the mixture ashore at the discharge port
3.21
net standard volume
NSV
See volumes
3.22
net standard weight
NSW
The total weight of all petroleum liquids. excluding S&W and FW, determined by deducting the S&W weight from the
GSW.
323
observed reference height
The distance actually measured from the tank bottom or datum plate to the established reference pont.
324
on-board quantity
OBQ
See volumes
325
reference height
The distance from the tank bottom or datum plate to the established reference point or mark.
3.26
reference point
The paint from which the reference height is determined and from which the ullageftnnages are taken
3.27
remaining on board
ROB
See volumes.
3.28
sediment and water
SAW
The non-hydrocarbon solid material and water in suspension in petroleum liquid. SAW is measured by the techniques describedinAPlMPMSCh. 10.1,Ch. 10,2.Ch. 10.3,Ch. bACh. 1O.5,Ch. 10.6.Ch. 10.7,Ch. 10.8andCh. 10.9.
3.29
slops
Oil, oil/waterlsediment, and emulsions contained in slop tanks or designated cargo tanks. The mixture usually results from tank stripping, tank washing. or dirty ballast phase separation.
3.30
stop gauge
A pre-transfer determinabon of a specific volume of cargo represented by a specific tank level, which, when reached,
results in cargo completion of the transfer This determination may be done by edher shore or vessel personnel.
3.31
tank washing
Divided into the following two types of acbvilies.
a) Water washing involves the use of a high-pressure water stream to dislodge clingage and sediment from the bulkheads, bottom, and internal tank structures of a vesseL
b) Crude oil washing involves the use of a high-pressure stream of the crude oil cargo to dislodge or dissolve clingage
and sediment from the bulkheads, bottom, and internal tank structures of a vessel during the discharge operation. NOTE Regidatory agencies require the vessel’s tanks to be ineited ckirwig this tank cleaning method.
3.32
total calculated volume
TCV
See volumes
3.33
total observed volume
TOV
See volumes
3.34
trim
The condition of a vessel with reference to its longitudinal position in the water. It is the difference between forward and aft drafts and is expressed ty the head” or ty the stern,”
3.35
trim correction
The correction applied to the observed gauge or observed volume when a vessel Is not on an even keel, provided that the liquid is in contact with all bulkheads in the tank, Correction for trim may be made by referencing trim tables for each tank or by mathematical calculation.
3.36
ullage gauge (or outage)
The measured distance from the cargo liquid surface to the reference point,
3.37
vessel experience factor
VEF
A compilation of the history of the TCV vessel measurements, adjusted for 080 or ROB, compared with the TCV
shore measurements. (See API MPMS Ch. 17.9/IP HM 49 for details.)