Plan Drawing for Food Production Room

The design of whatever layout is governed by a number of factors and the best layout is the one that optimizes all the factors. The factors influencing whatever layout are categorized into the following 8 groups:

• Thursday e cloth factor: includes design, diverseness, quantity, the necessary operations, and their sequence.

• Th east main factor: includes straight workers, supervision and service assistance, safety and manpower utilization.

• Thursday e machinery gene: includes the process, producing equipment and tools and their utilization

• Th east motion factor: includes inter and intradepartmental transport and treatment at the various operations, storage and inspection, the materials handling equipment.

• Th due east waiting gene: includes permanent and temporary storage and delays and their locations.

• Th due east service factors: include service relating to employee facilities such as parking lot, locker rooms, toilets, waiting rooms etc.; service relating to materials in terms of quality, product control, scheduling, dispatching, waste product control; and service relating to machinery such as maintenance.

• Th e building cistron: includes outside and inside building features and utility distribution and equipment.

• Th e alter cistron: includes versatility, flexibility and expansion

Each of the in a higher place mentioned factors contain a number of features and the layout engineer must review these in the light of his trouble. Normally the layout pattern process is a compromise of these diverse considerations to meet the overall objectives in the best possible manner.

The overall layout design process can exist considered to be composed of four phases Viz.,

Stage I: Location

Phase II: General Overall Layout

Phase III: Detailed layout

Phase IV: Installation

Some of import guidelines that help in the layout design are:

• Program from whole to details

• First program the ideal and so move to the practical aspects

• Cloth requirements should exist primal to the planning of process and machinery.

• modify the procedure and machinery by different factors to program the layout

• Though in that location is always an overlap in the different phases of layout pattern the major steps that accept to be followed in the layout design are outlined as follows:

• country the problem in terms of its objective, scope and factors to be considered

• Collect basic information on sales forecasts, production volumes, production schedules, office lists, operations to be performed, work measurement, existing layouts, edifice drawing etc.

• Analyze data and present information technology in the form of diverse charts

• Programme the production process and its arrangement

• Plan the fabric flow pattern and develop the overall material-handling plan

• Estimate plant and machinery requirements Select textile handling equipment

• Determine storage requirements

• Design and plan activeness relationships

• Program auxiliary and service facilities including their arrangement

• Decide infinite requirements and allocate activity areas

• Develop plot plan and block plan i.east. integrate all plant operations

• Develop detailed layouts and plan edifice along with its organisation

• Evaluate, modify and check the layouts

• Install layouts and follow upward

The Systematic Layout Planning (SLP) procedure as presented by Francis and White (1974) is shown in Figure 8.1. Nosotros encounter that in one case the appropriate data is gathered, a flow assay can exist combined with an action assay to develop the relationship diagram. Infinite considerations when combined with the relationship diagram atomic number 82 to the structure of the space relationship diagram. Based on the space relationship diagram modifying considerations and practical limitations, a number of alternative layouts are designed and evaluated.

8.1 Information collection

The development of whatsoever layout is dependent on the quality and quantity of facts that we have about the diverse factors influencing it. The data drove phase is not a 1-fourth dimension endeavour merely an ongoing office. The information for overall plan is to be collected at initial stages where every bit the data for detailed layouts may be obtained at a later phase, the facts take to be obtained regarding various materials and processes, the flow routing and sequencing, space requirements and different activities and relationships.

Figure 8.i Systematic layout planning procedure

8.2 Full general guidelines / considerations

8.2.1 Site layout:

A good site layout provides rubber and economical period of materials and personnel. A material sheet for the site is therefore prepared which and then allows the various processes to be positioned relative to one another. The services (due east.g. boiler house, effluent establish etc.) are and so added in the near convenient positions. The key buildings (administration, bottle, laboratories etc.) are placed in such a style that the distances traveled by personnel to apply them are minimized. Finally the road and rail systems are marked in. Typical sizes and clearances for the site layout are given in Tables 8.1 to 8.three. Having established site constraints and standards, a more detailed site layout can be fabricated. The site layout thus prepared should then exist considered to run across whether the layout is consistent with safety requirements and that it assists action in whatever emergency as likewise the constraints and standards have not been violated.

Broad guidelines for preparation of the site layout are given below:

• Minimize the distance that materials have to travel to or from stores or during processing

• Split the raw material unloading and finished product loading facilities

• Isolate the hazardous operations

• Locate storage areas shut to unloading and loading facilities

• locate boiler room, power station, cooling towers, water pumping station etc. on periphery simply adjacent to the expanse of largest use

• The usual clearances betwixt pipes including flanges and lagging and betwixt pipes and other objects should exist 25 mm but this should be increased if hot pipes run near plastic pipes, cables etc.

• Steam and water mains, electricity and telephone cables etc. should, in general, run parallel to the road organisation and should avert going through plant area

• Locate office edifice close to the principal entrance

• Provide adequate parking facilities for vehicles waiting to load / unload, cars, scooters etc.

• Program roads in such a manner that the vehicles exercise not pass through process areas. Ideally, outside of a institute should exist accessible on all four sides by road

• Workshop and general stores should be located within easy access of the processing units.

Tabular array 8.1 Typical clearances between various units for preliminary site layouts

A r ea	T o	C le arance, m
Found areas	To the adjacent unit, main roads or purlieus	15
Boilers and furnaces		fifteen
Blow downward stacks with flares		30
Gas holders		30
Cooling towers		xxx
Effluent plants		fifteen
Loading areas	To process units	15
Ware houses		30
Offices and canteens		30
Medical center		30
Garage		30
Fire station		30
Piece of work shops		30
Main roads		12
Main roads	To building line excluding loading bays	9
		15
		fifteen
Roads	Center line to loading bay head room	vii
Paved areas and paths		4
Track roads		5

Table 8.2 Typical areas and sizes for preliminary site layouts

Assistants	x m2	per administration employee.
Piece of work shop	xx m2	per workshop employee
Laboratory	twenty m2	per laboratory employee
Canteen	1 m2	per dining place
	3.v m2	per dining place including kitchen and store
Medical centre	0.1 - 0.15 m2 ten m2 minimum	per employee depending on complexity of service
Burn station (housing 1 fire, i crash, 1 cream, 1 generator and 1 security ,vehicle)	500 m2	per site
Garage (including maintenance)	100 m2	per vehicle
Chief roads	10 k	broad
Side roads	7.5 m	wide
Pathways	1.2 m	broad upto 10 people /infinitesimal
	2 yard	wide for 10 people / infinitesimal (nigh offices, canteen etc.)
Route turning circles	900 plough	11 m radius
	T junction	7.five m radius
	small roads	4 m radius
Minimum railroad curve	56 grand	within curve radius
Cooling towers per tower	0.04 m2/ kWh	mechanical draught
	0·08 m2 / kWh	natural draught

Table 8.three Typical constraint allowances for preliminary plant layout

Equipment	Safety	H o r i zontal	Vertical	C on struction/ Erection/ General
Centrifuges Crushers Mills		iii m	2 thou + L	5 1000 access corridor
Dryers		i.v one thousand + L	2 chiliad + 50	2.5 m to building
Columns		1.5 1000		iii m betwixt next columns
Furnaces and fired heaters	15 chiliad to gamble	3 m		2 widths (middle to eye side by side heaters )
Reactors Stirred vessels	15 chiliad to take chances	1.5 chiliad	iii m + L	iv m access area 40 m2for each thirty cm3 reactor volume
Heat exchanger (horizontal)		1.5 m +I channel 1.v-two g shell side	1.5 m
Tanks	fifteen m to hazard	1/2 dia (avg.) between tanks	3 m
Pumps		two m motor finish 1.5 m sides
Filters		one.5 g + L
Compressors		1.5 thou + Fifty	iii m + L	ii widths (middle to centre adjacent compressors )

Fifty: is the length of the longest internal part of the equipment that must exist removed for maintenance or functioning.

8.ii.ii Institute layout

In full general, a most economical plant layout is that in which spacing of the main equipment items is such that it minimizes the interconnecting pipage work and structural steel work. As a full general rule, layout should be as compact equally possible with all equipment at ground level and it should conform to access and safe requirements. The major considerations are listed beneath:

Equipment should be laid to give maximum economy of piping work and supporting steel. Commonly, they should be laid out in a sequence to adapt the process flow, merely exceptions to this arise from the desirability to grouping certain items such as tanks or pumps or maybe to isolate chancy operations.

In full general, high tiptop should just exist considered when ground infinite is express or where gravity period of materials is desired.

Equipment items which are considered to be a source of hazard should be grouped together and wherever possible should exist located separately from other areas of the constitute.

Provide sufficient clear space between critical and mechanically dangerous or high temperature equipment to allow safety of operating or maintenance personnel.

The equipment needing frequent internal cleaning or replacement of internal parts should be laid out for ease of maintenance.

Elevation to the underside of the pipe bridges and racks over paved areas should be at to the lowest degree 4 m.

viii.2.iii Layout of equipment

Thought should be given to the location of equipment requiring frequent attendance by operating personnel and the relative position the control room to obtain the shortest and most direct routes for operators when on route operation. Still, the command room should be in a rubber area. Some important considerations involved in locating a few fundamental equipment items are listed beneath:

• Mixing vessels can be laid out in a directly line, in pairs or staggered.

• In evaporators using barometric leg type condensers, barometric leg should be at least 10 mm from the vessel base. This is usually situated on the ground floor. For multiple effect evaporators, place the individual effects as close as possible to minimize vapor lines. Vapor liquid separator is accommodated without increasing the distance betwixt effects. The layout requirements for crystallizers are similar to those for evaporators.

• Furnaces should be located at least fifteen m away from other equipment. Ample room need to be provided at the firing forepart for the functioning of the burner and burner control panel.

• Where there are a large number of heat exchangers, they are ofttimes put together in one or more groups. Location should provide a layout, which is convenient to operate and maintain. Horizontal clearance of at least 1.5 m should be left between exchangers or exchangers and piping. Floating caput heat exchangers crave an installation length of at least 2.five times the tube length. Air cooled exchangers are located adjacent to the plant section they serve.

• Pumps in general should be located close to the equipment from which they have suction. Changes in direction of the suction line should exist at to the lowest degree

• 0.6 m from the pump. Every bit far as possible, clearances and piping should provide gratis access to i side of the motor and pump. Clearances between pumps or pumps and piping should exist at least 1.two 1000 for small pumps (18 kW) and 1.five m to 2 thousand for big pumps. Pumps handling hot liquid (lx °C) should exist at least 7.v m from pumps handling volatile liquids.

8.ii.4 Space  determination

In the layout planning procedure the space is allotted to unlike activities.

The theoretical minimum space, a found can occupy, is the total book of its various components. Various constraints forestall the attainment of this minimum. Such constraints include allowing adequate clearances for access during operation and maintenance and to permit safe operation. While determining the space consideration should be given to the following.

• Operating equipment

• Storage

• Service facilities

• Operators/workers

Allowance must be fabricated for space between adjacent equipment/machines for movement of the worker, work-in-process, maintenance personnel etc.

maxwellandome.blogspot.com

Source: http://ecoursesonline.iasri.res.in/mod/page/view.php?id=124502

Share this post