Evo­lu­tion in con­di­tion mon­i­tor­ing

DEMM Engineering & Manufacturing - - MAINTENANCE MATTERS -

Con­di­tion mon­i­tor­ing of ro­tat­ing equip­ment is a long es­tab­lished prac­tice in many hy­dro­car­bon-pro­cess­ing plants with a goal to de­tect, an­a­lyse and cor­rect ma­chin­ery faults to op­ti­mise main­te­nance in­ter­vals, ex­tend pro­duc­tion sched­ules and avoid un­planned down­time.

Crit­i­cal ma­chin­ery (tur­bines, com­pres­sors, large mo­tors) is nor­mally equipped with on­line con­di­tion mon­i­tor­ing and pro­tec­tion sys­tems but the bal­ance of plant equip­ment (mo­tors, pumps, and fans) gen­er­ally is not. This ma­chine cat­e­gory rep­re­sents well over half of the ro­tat­ing ma­chine pop­u­la­tion and con­sumes a sig­nif­i­cant per­cent­age of a main­te­nance bud­get. Of­ten, th­ese ma­chines are mon­i­tored with por­ta­ble data col­lec­tors as, his­tor­i­cally, it has been ei­ther im­prac­ti­cal or un­eco­nom­i­cal to in­stall and main­tain a per­ma­nently wired sys­tem. How­ever a new breed of wire­less con­di­tion mon­i­tor­ing sys­tems pro­poses to bridge the gap be­tween the cost of wired and por­ta­ble sys­tems.

Por­ta­ble sys­tems have been tra­di­tion­ally wired be­tween the in­stru­ment and sen­sor, although with ad­vances in wire­less con­nec­tions and re­quest from users on the grounds of health and safety, we can now use wire­less con­nec­tion from the vi­bra­tion sen­sor to the por­ta­ble vi­bra­tion data col­lec­tor. Por­ta­ble sys­tems are still widely used for the bulk of con­di­tion mon­i­tor­ing of equip­ment but there are many ar­eas that would ben­e­fit from a wire­less trans­mit­ter. Ex­am­ples in­clude ar­eas where it may be con­sid­ered too dan­ger­ous to take data, or ma­chin­ery that may be run­ning in­ter­mit­tently and is of­ten not avail­able dur­ing the time that the op­er­a­tor takes read­ings.

The po­ten­tial to im­prove ef­fi­ciency through con­di­tion mon­i­tor­ing has driven the de­vel­op­ment of a new wire­less so­lu­tion from SKF. The SKF Wire­less Ma­chine Con­di­tion Sen­sor is ideal for mon­i­tor­ing ma­chine com­po­nents in lo­ca­tions that are dif­fi­cult to ac­cess, and uses its wire­less tech­nol­ogy to solve a se­ries of is­sues that could not be ad­dressed with wired sys­tems. Cru­cially, the prod­uct has ATEX Zone 0 cer­ti­fi­ca­tion, which means that it can be used in hazardous en­vi­ron­ments, and has sig­nif­i­cant ben­e­fits in many ap­pli­ca­tions through­out the petro­chem­i­cal, oil and gas sec­tors. The SKF Wire­less Ma­chine Con­di­tion Sen­sor col­lects data on three key ma­chine con­di­tions: tem­per­a­ture (in­dica­tive of lu­bri­ca­tion is­sues, in­creased fric­tion, rub­bing, etc.); over­all ma­chine con­di­tion (vi­bra­tions caused by mis­align­ment, im­bal­ance, me­chan­i­cal loose­ness, etc.); and rolling el­e­ment bear­ing con­di­tion (al­lows dam­age de­tec­tion and di­ag­no­sis of source as ball/ roller, cage, in­ner or outer race­way).

SKF Wire­less Ma­chine Con­di­tion Sen­sors com­mu­ni­cate with each other, and with a wire­less gate­way, cre­at­ing a mesh net­work. This type of net­work and com­mu­ni­ca­tion pro­to­col is ideal for mon­i­tor­ing ro­tat­ing ma­chin­ery be­cause it can func­tion in ar­eas where tra­di­tional WiFi com­mu­ni­ca­tions are not present. If a node is un­able to re­ceive sig­nals di­rectly from the Wire­lessHART gate­way, it will in­stead send and re­ceive its data through a nearby node that can pass the data to and from the gate­way, ul­ti­mately cre­at­ing the mesh net­work.

Newspapers in English

Newspapers from New Zealand

© PressReader. All rights reserved.