These includes corrective maintenance i.e. "break and repair" maintenance techniques (Salonen and Deleryd 2011); a preventive maintenance system i.e. "fix it before it fail" maintenance strategy (Sheu and Kuo 2006), and an opportunistic maintenance system i.e. "fix if you are opportune to identify the fault" maintenance strategy (Cui and Li 2006).
Other systems, on the one hand, include a predictive maintenance system i.e. "systematically guess when a subsystem will fail" maintenance strategy (Shrotri and Khandagale 2012) and a total productive maintenance (TPM) system i.e. "investigate, find and proffer solutions to the cause of machine failure and production loss" maintenance strategy (Rajput and Jayaswal 2012).
Currently, driven by the demand to reduce maintenance costs, shorten repair time, and maintain high availability of equipment, maintenance strategies have progressed from breakdown maintenance (fail and fix) to preventive maintenance, then to condition-based maintenance (CBM), and lately toward a prospect of intelligent predictive maintenance (predict and prevent),[1 3].
This finding is particularly important for patient management when one considers that patients who fail BCG maintenance therapy will often go on to require radical cystectomy for ultimate management of their bladder cancer [ 31].
Consequently, he said, if the co-op's board did not specifically waive the superintendent's obligation to pay maintenance charges, or if the superintendent failed to make maintenance payments after moving into the super's apartment, the co-op's lawyer or managing agent should immediately serve a formal "Demand for the Payment of Rent" upon the superintendent and his wife.
Pro Air failed to correct maintenance procedures and record-keeping problems cited in a June inspection and operated "unairworthy aircraft," the F.A.A. said.
King's Cross station remained closed on Saturday after Network Rail failed to complete maintenance work on the east coast mainline.
After the Alaskan spill, Mr. Marshall was called to testify before a Congressional subcommittee in September and was questioned for several hours about whether BP failed to perform maintenance checks on its pipelines.
As shown in Fig. 7, in the second layer, the cluster heads failed, the route maintenance strategy uses the fault-tolerance mechanism through rollback to the failure cluster head upper layer and re-chooses the next hop to complete the task of transmission and ensure the robustness and reliability of the network.
