API RP 686-2009 pdf download.Recommended Practice for Machinery Installation and Installation Design.
1 Scope 1.1 Purpose This recommended practice (RP) is intended to provide recommended procedures, practices, and checklists for the installation and precommissioning of new, existing, and reapplied machinery and to assist with the installation design of such machinery for petroleum, chemical, and gas industry services facilities. In general, this RP is intended to supplement vendor instructions and the instructions provided by the original equipment manufacturer (OEM) should be carefully followed with regard to equipment installation and checkout. Most major topics of this RP are subdivided into sections of “Installation Design” and “Installation” with the intent being that each section can be removed and used as needed by the appropriate design or installation personnel. 1.2 Life Cycle Cost It is the intent of this document to facilitate machinery installations that will provide the user with a reduced overall life- cycle cost of equipment ownership. 1.3 Contractual Requirements API 686 is written such that it can be used as a contractual document between an owner company and an engineering and construction (E&C) contractor. The major benefit is that it provides a detailed scope of supply for machinery installation requirements, with acceptance criteria, and documentation requirements. There is then no ambiguity amongst multiple E&C bidders as to the requirements for project machinery installation (i.e. everyone is on an even playing field). 1.4 Equipment Classification This RP is intended to address those installation and construction procedures associated with all machinery. Additional “special-purpose” requirements are covered at the end of each section as required. 1.5 Alternative Installation The installation contractor or design contractor may offer alternative methods of equipment installation as mutually agreed upon by the user and equipment manufacturer.
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. 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.