API RP 686:2009 pdf download

API RP 686:2009 pdf download.Recommended Practice for Machinery Installation and Installation Design.
NOTE Most misalignment is combination misalignment. It can be resolved into a parallel offset at a given point along the fixed machine centerline and angular misalignment in both the horizontal and vertical planes. The offset is dependent on the location along the fixed machine centerline where it is measured, normally the center of the coupling spacer.
2.2
ambient offset
The practice of misaligning two shaft centerlines at ambient conditions to account for the estimated relative changes in shaft centerlines from static ambient conditions to steady state operating conditions.
2.3
angular misalignment
The angle between the shaft centerline of two adjacent shafts. This angle is normally reported in slope of millimeter of change per meter of linear distance (mils per in.) (1 mil = 0.001 in.).
2.4
baseplate
A fabricated (or cast) metal structure used to mount, support, and align, machinery and its auxiliary components.
Baseplates may be directly grouted to concrete foundations (after proper leveling) or bolted to pre-grouted
chockplates (see 2.9).
2.5
blowdown system
A closed system connected to a machine used to depressure and decontaminate the machine preparatory to
maintenance activities; also known as a maintenance dropout system.
2.6
bolt bound
Where any hold-down bolt is not free in the bolt hole, so that the ability to move the moveable element in a machinery train horizontally or axially is constrained.
2.7
breakout spool
A short, flanged length of pipe immediately connected to the machinery piping flanges. Lengths vary with the size of the pipe but range from 15 cm (6 in.) to 1 m (3 ft). The purposes of this spool are to facilitate machinery installation, allow piping modification to reduce pipe strain, isolate the machinery, facilitate commissioning activities such as flushing or blowing lines, and allow removal of temporary inlet strainers; also known as a dropout spool.
2.8
cementatious grout
A type of grout material that is portland cement based.
2.9
chockplate
A solid steel (or alloy steel) plate with a machined top surface that is grouted to a concrete foundation to support and
maintain alignment of a machinery structural steel baseplate.
2.10
combination misalignment
When the centerlines of two adjacent shafts are neither parallel nor intersect. This misalignment is normally described in both angular and offset terms.
condensing service
A gas stream that contains a vapor component that may condense to a liquid during startup, operation, or shuttingdown of a compressor or blower. This may include pure vapors such as refngerants as well as hydrocarbon gas
2.12
critical service
Critical service is typically defined as those applications that are unspared /single-train installations whereby loss of operation would result in significant loss of production, loss of primary process containment, or threat to personnel safety.
2.13
dead-leg
A length of piping with no flow.
2.14
drop point
A vertical section of oil mist distribution piping that is usually smaller in diameter than the main oil mist header. This
piping rises out of a tee in the main oil mist header, turns horizontally, and extends downward to the machinery being
lubricated.
2.15
elastomeric coupling
A coupling that obtains its flexibility from the flexing of an elastomenc element.
2.16
engineering designer
The person or organization charged with the project responsibility of supplying installation drawings and procedures for installing machinery in a user facility after machinery has been delivered. In general, but not always, the engineering designer specifies machinery in the user facility.
2.17
epoxy grout
A type of grout material that consists of a resin base that is mixed with a curing agent (hardener) and usually an
aggregate filler.
2.18
equipment installer
The person or organization charged with providing engineering services and labor required to install machinery in a user facility after machinery has been delivered. In general, but not always, the installer is the project construction contractor.