preventive maintenance of track systems

... roof tanks, when the roof is in the lowest position, check that no more than 0.6 m (2 ft) of tape are exposed at the end of the tape guide ‫ٱ‬ Inspect the condition of board and legibility of ... hold-off distance ‫ٱ‬ Check reinforcing pad where sample hatch pipe penetrates the roof deck ‫ٱ‬ On floating roof sample hatch and recoil systems, inspect operation of recoil reel and condition of ... portion of the gauge well for thinning, size of slots, and cover condition ‫ٱ‬ Check for hold-off distance marker and tab with holdoff distance (legible) ‫ٱ‬ On floating roofs, inspect condition of...

Ngày tải lên: 12/08/2014, 16:20

... FACILITIES CRITERIA (UFC) OPERATION AND MAINTENANCE: MAINTENANCE OF PETROLEUM SYSTEMS Any copyrighted material included in this UFC is identified at its point of use Use of the copyrighted material apart ... PIPELINE SYSTEMS 2.1 On-Base Pipelines 11 2.2 Operating On-Base Petroleum Systems 11 2.3 Maintenance of On-Base Pipelines 11 2.4 Off-Base Pipeline Systems ... description of these types of pipelines and O&M procedures that apply to most systems 2.4.1 Cross-Country Pipelines Cross-country pipelines are often of the multi-product type The system consists of one...

Ngày tải lên: 12/08/2014, 16:20

... Cart The MH2 hose cart contains an F/S and meter Maintenance of hose carts is the responsibility of refueling maintenance 5.15 High Level Shut-Off (HLSO) The 124AF has been upgraded to the 129AF ... control The Petrol Ram division of the Air Force Petroleum Office (AFPET), Fort Belvoir, Virginia, is the DoD agent for acquiring these systems Because of unique software requirements and the need ... Defueling Control Valve (134AF) 5.9 Dual Rate -of- Flow Control Valve (41AF) 5.9.1 The dual rate -of- flow control valve (Figure 5.7) is a combination rate -of- flow control valve and fast-closing, hydraulically...

Ngày tải lên: 12/08/2014, 16:20

... containment of all leaked product from the tank The leak detection system attached to the interstitial monitor is either vacuum maintenance, positive air pressure maintenance, hydrostatic pressure maintenance, ... pump the fuel off the plane and force the fuel into the hydrant loop at a rate of 1135 liters per minute (300 gallons per minute) and 165 psi 165 psi will overcome the 80-psi setting of the 58AF-9-1 ... Since the cover chamber of the main valve is vented through the common drain of the float assembly, the pressure in the sensing chamber overcomes spring tension on top of the diaphragm, holding...

Ngày tải lên: 12/08/2014, 16:20

... centering of roof or pan The performance of this task may require a confined space entry FREQUENCY: Monthly 10.3.3.2.2 For open-top floating-roof tanks, ensure the center primary roof drain system ... diffusion of vapors into the surrounding air and reduces the possibility of a flammable mixture concentrating at ground level Regardless of the method used, eliminate sources of ignition in the path of ... a flow of 2271 liters per minute and measure the DP This is particularly critical with Type III systems where fuel from a varying number of pumps flows through multiple F/Ss In older systems...

Ngày tải lên: 12/08/2014, 16:20

... prevent the free discharge of air from the hose outlet Airline couplings must not be compatible with outlets of other gas systems to prevent the inadvertent servicing of supplied-air respirators ... requirements of ANSI Z359, Safety Requirements for Personal Fall Arrest Systems, Subsystems, and Components Use only commercially manufactured fall and rescue equipment The use of “homemade” ... that may affect efficiency, absence of parts, or evidence of defects 11.18.15.4.6 Damage to or improper function of mechanical devices and connectors 11.18.16 Maintenance and Storage Requirements...

Ngày tải lên: 12/08/2014, 16:20

... bottom of storage tanks; often contains rust, scale, or dirt Specific gravity The ratio of the weight of a given volume of material at 15.5 °C (60 °F) to the weight of an equal amount of distilled ... fuels, consisting of a series of fixedflush-type outlets or hydrants connected by piping Hydraulic fluid Fluids intended for use in hydraulic systems Low viscosity, low rate of change of viscosity ... because of its high flash point JP-8 (NATO F-34) A high-quality kerosene fuel with a flash point of 3.2 °C (37.8 °F) or higher, a freeze point of -47.2 °C (-52.9 °F), a relative density of 51 °...

Ngày tải lên: 12/08/2014, 16:20

... primary goal of maintenance is to avoid or mitigate the consequences of failure of the component Maintenance can be firstly categorized into two types: corrective maintenance and preventive maintenance ... Operating cost of component a (US$) Cmin,a Cost of minor maintenance for component a (US$) Cmaj,a Cost of major maintenance for component a (US$) M Number of component xvii Ap Availability of load point ... the development of cost-effective maintenance management for power systems The main task of cost-effective maintenance management includes optimization and implementation of maintenance schedules...

Ngày tải lên: 10/09/2015, 15:53

... cornerstone of successful maintenance operations Scheduling involves planning the activities of the maintenance crew It does not mean planning the minute15 16 I Fundamentals of Preventive Maintenance ... road of professional maintenance management, you will eventually work on improving your system You may even eventually move into the next phases of preventive maintenance- namely, predictive maintenance, ... total productive maintenance (TPM), or reliability-centered maintenance (RCM) All of these programs rely on trend data to de- 56 I Fundamentals of Preventive Maintenance termine maintenance activities...

Ngày tải lên: 08/03/2018, 15:01

... boundaries, etc.) Examples of open systems are: groundwater systems, social systems, as well as most of the natural systems Four types of variables characterize a model of a system (Kramer and De ... promoter University of Twente, assistant promoter Prof dr.ir A.Y Hoekstra Prof dr.ir H.G Wind Prof dr.ir A.E Mynett Prof dr S.M de Jong Dr M.J Titus University of Twente University of Twente UNESCO-IHE ... five different types of integration within the framework of Integrated Assessment Modelling (IAM) These are integrations of disciplines, of models, of scales, of issues, and of stakeholders Scrase...

Ngày tải lên: 06/11/2012, 10:35

... walls of office buildings and the floors of residential units for temperature control, while only distributing the volume of air required for ventilation This decoupled system allows for 100% of ... (0.3048 m) off of the rear wall as shown in Figure 4, which gives an area of 2.25 ft2 (0.2090 m2) for each vent Case has a volume of 1,368 ft3 (38.74 m3) By meeting the guidelines of four air ... The outlet vent area of Case is double the size of the outlet vent area of Case Each outlet vent is of the size, 9" × 36" (0.2286 m × 0.9144 m) spaced 12", giving an area of 4.5 ft2 (0.418 m2))...

Ngày tải lên: 05/09/2013, 15:28

... (NSTDA); iii Office of the Basic Education Commission (OBEC); iv Office of the Non-formal and Informal Education (ONIE); v Vocational Education Commission (VEC); NSTDA (2008) Memorandum of understanding ... rate the quality of the training on a scale of 1-10 ranging from poor to excellent and the degree of adequacy of the knowledge acquired from the training sessions on a scale of 1-10 ranging from ... description The study analyses a project engaged in the diffusion of PV systems to rural areas The PV systems in focus are stand-alone or off-grid installations designed to be used in remote areas where...

Ngày tải lên: 05/09/2013, 16:10

... to the high price of PV modules, even if it has declined steadily since 1985 [6] Due to the minimal maintenance of PV systems and the absence of real benefits of economies of scale during construction, ... two principal PV systems described in the following sections are the grid connected (or on-grid) systems and the stand alone systems (or off-grid) systems 3.5.1 Grid connected systems In grid ... the key advantage of PV is the reduction in operation, maintenance and replacement costs; these often result in lower life-cycle costs for PV systems 3.6 Key benefits of PV systems During the...

Ngày tải lên: 05/09/2013, 16:10

... invented the method of automatic control of the weaving of fabrics with a loom machine by using punch cards and this method was the beginning of the concept of NC The concept of NC was actually ... role of controlling the machine’s behavior with the exception of servo control Figure 1.13 shows the conceptual architecture of CNC machine tools from the hardware and software points of view Software ... developing Soft-NC is the scheduling that satisfies the execution of the software modules in real time Recently, NC systems have advanced from being closed systems to being open and distributed systems...

Ngày tải lên: 08/09/2013, 20:50

... consisting of various computers, storage systems, application software, and databases Design of a new application for an existing database or design of a brand new database starts off with a ... recovery subsystems of a DBMS Economies of Scale The DBMS approach permits consolidation of data and applications, thus reducing the amount of wasteful overlap between activities of data-processing ... describes some of the main characteristics of database systems, and Sections 1.4 and 1.5 categorize the types of personnel whose jobs involve using and interacting with database systems Sections...

Ngày tải lên: 07/12/2013, 11:33

... 64MB of memory, and GB of disk space On newer computers the performance of the operating system is extremely fast The list below gives some idea of the capabilities, but complete lists of supported ... list of some of the more important directories follows with a brief description of each Most users have their home directories under the ’/home’ directory Most of the other directories are of interest ... includes many of the applications that would be desired by the average user Most of the listed applications are free, with the exception of the games Many of these packages are a standard part of Linux...

Ngày tải lên: 22/12/2013, 20:17