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Home  Design Guides  BN-DG-C6 Design

 BN-DG-C6 Design Guide for Checking of Design Model and Definition of 

Percentage Completion

Table of Contents

1. Introduction

2. General

3. General Safety

4. Lines

5. Valves

6. Heat Exchangers/Reboiler s

7. Pumps and Compress ors

8. Vessels/Columns9. Furnaces/Boilers

10. Relief Systems

11. Electrical

12. Instrumentation

13. Underground

14. Civil/Architectural/Structural

1. Introduction

The purpose of this document is to lay down a review procedure to ensure that the desired level of quality for thefabrication of a piping model is carried out in the engineering off ice and that sound design cr iteria for operability,

safety and maintenance have been observed.

This check list may also be used f or the recording of the check, appropriate space is left f or any comments against

a checked item in column “remarks”.

 

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 Additionally the form “internal model review” (see Attachment 1) and the form “approved model revisions fr om

internal model review” (see Attachment 2) may be used for reporting purposes.

2. General

2.1 Check the model against the latest issue of the plot plans, engineer ing and utility flow diagrams and line tables.

2.2 Follow the line up systematically and pay s trict attention to details s ince many accidents are caused by

seemingly minor items.

2.3 Mark on the engineering flow diagram all the lines, f ittings and instrumentation w hich have been checked.

2.4 Make sure that w hen a modification, addition, elimination or reduction is cons idered, that it suits its purpose, is

practical and also economical. When in doubt consult others.

2.5 Use this procedure f or a number of items w hich can not be show n on diagrams. Please note that the checklist

does not pretend to be complete and under no condition it shall overrule sound judgment.

2.6 Check that the code has been used correc tly.

2.7 Check that the correct scale (1:33-1/3 or 1:25) is used. (Preferably same scale as used on piping GA’s).

2.8 Check that North arrow , match lines (w ith coordinates), base number, unit number and battery limit tapes have

been properly tagged and located on each table.

2.9 Check that all equipment, instruments and lines have been tagged in accordance w ith equipment lists, f low

diagrams and line tables, check location of nozzles and connections and check flow direction pipelines.

2.10 Check that coordinates and elevations are properly indicated.

2.11 Check if construc tion can build the unit(s) economically as designed.

2.12 Check that start up and shutdow n problems have been considered and drain let-dow n fac ilities have been

provided.

2.13 Check the accessibility for operation, maintenance w ith mobile equipment and inspection.

2.14 Check location of future equipment (tape indicated).

2.15 Check location of drop out areas ( tape indicated).

2.16 Check that perspex plate w ith model symbols and color coding is available.

2.17 Check platforms and ladders for Client standards.

2.18 Check that access w ays and roads provide ample head room for vehicles, mobile equipment, etc. required f or 

eff icient and safe construction, operation and maintenance of the plant.

2.19 The policy of access to valves, blinds, manways , instruments, etc. shall have been established during lay out

stages and before model w ork commenced. Check model for consistency of approach.

2.20 Package units are not normally modelled in detail and are usually show n as a block. Ensure adequate space is

available for access and f or removal of components of the package unit.

2.21 Check location of particularly noisy equipment, valves, etc. in relation to the frequency of visits by operating

and maintenance personnel to the area.

Provision of safety shield or noise shields shall also be checked.

2.22 Check the space required around fired heaters f or soot blow ing and decoking activities and clearance for 

 

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3.15 Check that platforms have been provided at places w here w ork is expected betw een maintenance stops.

3.16 Check that open sew er pits are not located near hot pumps, f urnaces, etc.

3.17 Check that steam exhaust cannot cause personnel hazards either f rom spraying droplets of hot w ater or 

causing icy or w et surfaces.

3.18 Check that steam rings are foreseen at f langes in overhead lines of thermal cracking units and for lines in

hydrogen services.

3.19 Be alert for equipment supported on continuous platforms w hen sections of these platforms are supported on

structures subject to different thermal expansion.

3.20 Check that continuously operating vent stacks are higher than the highest nearby structure (w ithin a safedistance).

3.21 Check the location of liquid relief valves, since its actual height influences the required set pressure.

3.22 Check the location of toxic gases (H2S, VCM etc.) monitoring points, if applicable.

3.23 Check that drains of light hydrocarbons (propane, butane) are protected against f reezing (e.g. double valves).

3.24 Check that firew alls have been located correctly.

3.25 Check that levers of plug- and ball valves are not hampering operators on w alkways or platforms, levers shall

move in the same plane as the piping lay out.

3.26 Check that steam for purging of lines and equipment (e.g. snuffing steam, emergency steam) is dry, provide

automatic trap stations w ith drain assembly upstream of last block valve in steamline.

3.27 Check that process ventlines are routed and oriented to saf e locations, (3 meter above highest platform),

w atch nearest platforms and prevailing wind direction.

3.28 Check location of skirt openings and manholes w ith platforms and ladders in r espect to safe escape route.

3.29 In case of location of w ater cooled equipment at high elevated platforms, check if the normal cooling w ater 

pressure is s uitable for this duty, otherw ise a booster pump shall be installed.

3.30 To prevent vacuum in equipment located at high elevations, due to siphon operation of the fluid, install a

vacuum breaker to suck in air or a process gas.

4. Lines

4.1 Check that piping entering and leaving the unit is logically grouped together.

4.2 Check that valves, blinds, flushing/drain and instrument connections are properly located. Check especially so

called manifolds and large control valves. Check in cases w here spades are used ISO spectacle blinds, that piping

systems are flexible enough to insert these spades.

4.3 Check that piping subject to thermal expansion is anchored at plot limits.

4.4 Check elevation of overhead piping and horizontal clearance of access and/or w alkw ays.

4.5 Check that start-up/circulation lines are short.

4.6 Check that dead ends have been avoided. Check if system can be flushed and drained.

4.7 Check that vapor lines (inclusive s team) branch off from the top of main lines. Prevent pockets in vapor lines.

Keep lines sloping to a drum or install drainpoints (driplegs).

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4.8 Check that piping subject to thermal expansion is flexible enough. Are supports adequate?

4.9 Check if nozzles and branches on expanding piping are not installed near obstructions, support beams, etc. (to

avoid ripping off). Are these lines properly anchored. Are stresses on equipment nozzles w ithin limits.

4.10 Check for pockets in vapor lines w here condensation may occur . Has external heating been applied on those

pockets which can not be avoided?

4.11 Check that long lines attached to small bore nipples are properly supported to prevent breakage due to

vibration.

4.12 Check that lines do not pass through table top, but run alongside. If impossible group lines together passing via

a sleeve.

4.13 Check that dead end sections have been avoided (e.g. in w ater lines).

4.14 Check that piping has been designed to permit easy drainage, venting, flushing, testing, maintenance,

insulation, painting.

4.15 Check position of eccentric reducers. Normally straight side on bottom of horizontal lines except in pump

suction lines w here vapor pockets may cause cavitation the pump.

4.16 Check that compressor suction lines slope tow ard knockout drum.

4.17 Check that small bore cooling w ater lines branch of f from top of the header. (This to prevent plugging).

4.18 Check that stripping steam lines are short and horizontal or sloping from the last valve.

4.19 Ascertain that two phase f low v ertical piping has been checked for flow stability.

4.20 Check that hydraulic (w ater) hammer conditions have been checked.

4.21 Check that all lines have been properly tagged w ith line numbers, coordinates, etc. Also check that f low

direction has been correctly indicated.

4.22 Check that high temperature and special material lines have been stress analyzed.

4.23 Check that gas is prevented from entering cooling water sys tems.

4.24 Check absorber gas feed inlets f or pockets near the inlet to avoid absorbent in the gas line.

4.25 Check that piping w ith instrument connections has been laid so that these connections are easily accessible.

Check if necessary platforms and walkw ays have been provided.

4.26 Check anchoring of piping discharging to atmosphere. Pay special attention to screw ed piping.

4.27 Check that vacuum equipment steam jets has been hooked up directly to the steam mains, i.e. w ithout any

intermediate connections w hich may suck in air. This is not applicable for vacuum pumps.

4.28 Check (for the same reason), that venting of the gas compressor suction piping has been avoided.

4.29 Check all coordinates on piping for correct configuration and clearances.

4.30 Check that service stations have been properly located. Design also for w interizing (w ater/steam/air in one

insulated box).

4.31 Check for rotary equipment that suction and discharge piping are properly s upported.

4.32 Check clearance between piping and structural steel w ith fireproofing.

C

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4.33 Check that thermosiphon reboilers have been located such that minimum pipe distances and equal vapor 

distribution are achieved.

4.34 Check required straight piping runs to distributor piping in distillation columns. Only in vertical plains are bends

allowed w ithin this straight run.

4.35 If a vent is required on an exchanger f or periodically purging of noncondensable vapors, this vent valve shall

be accessible, vent line shall be show n on model.

4.36 Check piping arrangements on shell and tube side of exchangers carefully for correct f low of f luids and

proper operation of exchangers.

4.37 If symmetrical piping hook up is required to exchangers, airfines or double suction of pumps, check this

carefully.

4.38 Keep length of suction piping to pumps to a minimum and prevent pockets.

4.39 Check location of break f langes on piping at shell and tube exchangers and aircoolers to facilitate bundle

removal.

4.40 Check that number of passes in a heater are show n and if necessary check that piping is symmetrical.

4.41 Check that location of isolating valves and valves of snuffing steam and emergency steam are at 15 meter 

distance from the heater at grade and accessible.

4.42 Avoid dead legs in heavy fuel oil lines and w aste gas lines.

4.43 In case of steam jacketed sulphur lines provide T-pieces or cross pieces at the end f or cleaning the sulphur 

lines by rigging.

4.44 Check location of relief valves and their good access ibility for servicing.

4.45 Check location of local panels f or saf e operation and good accessibility.

5. Valves

5.1 Check that valves in overhead pipe tracks have been avoided to the maximum extent.

5.2 Check that chain operated valves have been avoided w here possible.

5.3 Check that all valves are installed w ith the stem pointing upwards or horizontally.

5.4 Check that hand w heels are easily accessible for operation and yet not obstructing walkways or platforms.

Check also stems, especially in open position.

5.5 Check that valves for emergency operations are w orkable f rom grade level.

5.6 Check that valves that need frequent attention are easily accessible.

5.7 Check valves in vertical lines for poss ible water traps.

5.8 Check w hen reduced port valves are installed, that piping is self draining on both sides of the valve.

5.9 Check that hot oil block valves are w ell accessible in view of fire risk.

5.10 Check that control valve ass emblies are located at ground level or on first platform (except w hen required

otherw ise for process reasons).

5.11 Check that installation of valves outboard of elevated platforms has been avoided.

5 12 Ch k th t l d bl bl k d bl d h b i t ll d i tilit ti t i t

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5.12 Check that valves or double block and bleeders have been installed in utility connections to process equipment

and lines.

5.13 Check that spring loaded and/or extra block valves have been used w here valves may freeze-up w hen

draining or sampling.

5.14 Check that process vents and drains are show n.

5.15 Check location/installation of check valves in ditch, lines of pumps or near connection of lines, for example

connection of c ondensate lines f rom traps to condensate collecting header near to the header.

5.16 Check levers of plug-or ball valves, these shall not obstruct w alkw ays, platforms etc. Levers shall move in the

same plane as the piping lay out.

6. Heat Exchangers/Reboilers

6.1 Check that piping arrangement is acceptable w ith respect to the removal of shell and channel covers as w ell as

the w ithdrawal of tube bundles.

6.2 Check whether bundles can be pulled and lowered safely from platforms and stacked arrangements

(obstructions, hydrants).

6.3 Check stacked heat exchangers for the possibility of oil spills on hot equipment beneath it, especially during

maintenance w ork.

6.4 Check location and operability of all trolleys and lifting beams above exchangers.

6.5 Check accessibility to exchangers for maintenance, bundle removal/cleaning, etc.

6.6 For a thermosiphon reboiler check the elevation difference betw een draw -off pan and the reboiler for dr iving

force.

6.7 If a vent is required on the exchanger for periodically purging of noncondensable vapors, this vent valve s hall

be accessible. Vent also to be show n on model.

6.8 Cold f luid enters the exchanger at the bottom and leaves it f rom the top.

6.9 Check crane access to airfin coolers f or maintenance or construction.

6.10 Check symmetrical piping hook-up to several bundles in an airfin cooler or to exchangers in parallel operation.

Dead legs in capped headers shall be kept to a minimum or be avoided, use elbow s ISO tees at the end of the

header. Pockets in outlet piping of aircooled or w ater cooled condensers must be avoided as w ell as in the hot

vapor bypass lines.

7. Pumps and Compres sors

7.1 Check that f low in suction piping is as smooth as possible.

7.2 Check that high points in pump suction lines have been avoided.

7.3 Check that valving around pumps is logical and operable.

7.4 Check volumes w hich must be drained w hen a f ilter or a pump needs to be opened.

7.5 Check that pumps can be safely and easily handled for maintenance.

7.6 Pay special attention to spading-off possibilities.

7 7 Ch k th t i i f iliti d t

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7.7 Check that priming facilities are adequate.

7.8 Check that facilities have been provided for gradual heating prior to s tart.

7.9 Check hookup of suction line on double suction pump. Piping layout to be as follow s for side inlet:

Straight length from suction flange unt il bend to be 3D (D = diameter nozzle pipe), no reducer allow ed.

In vertical pipe reducer, strainer and valve can be installed.

For top inlet straight length = 5D if suction line runs in length direction of pump motor and 3D if suction line rune in

same plane as pumps impeller(s).

Upstream of the bend in the suction line the strainer, valve etc. can be installed.

7.10 Check that pumps operating under vacuum are provided w ith high point vents, w hich are connected via a vent

line to the top of the suction vessel.

7.11 For vertical pumps no straight length is required.

7.12 If pump handle liquids w ith temperatures above auto-ignition, this pumps shall be located in safe-areas (not

underneath pipe rack) and w idely spaced from other pumps. Good accessibility f or f ire fighting is required and

above pumps a sprinkler system shall be installed.

7.13 Piping to compressors. Pockets shall be prevented, lines shall slope to suction drum and suction line shall

mostly be steamtraced. Check vendor draw ings carefully.

7.14 Check all flushing, cooling, quenching requirements of pumps and compressors.

7.15 Check that suff icient space is available for removal of f ilters from strainers.

7.16 Suction lines of pumps to be of minimum length.

7.17 Check NPSH of pumps.

7.18 If tw o pumps are parallel operating the piping hookup at suction and discharge side shall be symmetrical.

On reciprocating compressors safety valves must be located upstream of the discharge block valve

8. Vess els/Columns

8.1 Check location of vents as w ell as direction of outcoming streams.

8.2 Check position of drain nozz les. Keep them clear f rom areas w here heavy equipment such as fork lift trucks

may w ork.

8.3 Check that manw ays are w ithin reach of hoisting equipment.

8.4 Check that instrument tappings and local instruments are readily accessible.

8.5 Check that insulation for personnel protection is provided.

8.6 Check that the lines can f ollow the expansion w hen heating up/cooling dow n. Pay special attention to supports

on hot respectively cold structures. Check free movement of platforms.

8.7 Check that staircases, platforms, ladders etc. are logically located.

8.8 Check that the layout of platforms, ladders, piping, relief sets, etc. is in accordance w ith the specified basis for 

w ind and earthquake load calculations.

8.9 Check location and elevation of all piping- and instrument nozzles against requis ition of equipment and draw ing.

8.10 Check that spectacle blinds or spades are installed (indicated) at the nozzles f or pressure test or isolation

purposes Normally required w ith columns

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purposes. Normally required w ith columns.

8.11 Stripping steam to the columns shall be dry; install KO pot at grade prov ided w ith automatic steam traps and

drain valve and provide a minimum distance insulated steamline in vert ical run w ithout pockets to the steam inlet

nozzle of the column.

8.12 Check that suf ficient space is available for column erection activities.

8.13 Check that consideration has been given to loading and unloading of catalysts, packing, internal etc

9. Furnaces/Boilers

9.1 Check that piping does not obstruct observation w indows , access doors , header box covers, etc.

9.2 Check that space is available for tube w ithdrawal and c leaning.

9.3 Check that piping at burners is arranged so that insertion/ removal of lighting torches and burner guns is not

hampered.

9.4 Pay special attention to safety of fuel sys tem:

Check that heavy f uel and LBF systems are suff iciently segregated

Check that provisions are made to adequately prevent liquid fuels from entering steam and gas systems

 Are locations of f lame arrestors, straight pipe length etc. of low pressure and w aste gas in accordance

w ith specifications?

9.5 Check that emergency/smothering steam valve manifolds are at safe distance. Steam shall be dry. Install

upstream of manifold at low point a drain valve and automatic steam trap.

9.6 Check that dry emergency steam is available.

9.7 Check that:

Branch off nozzles are positioned on top of main

Steam lines are under continuous slope (no pockets)

Suff icient steam traps and drain points are provided

9.8 Check that fuel and atomizing steam cocks are w ithin hand reach w hen looking at the burners through the

observation w indow s.

9.9 Check that the local emergency shutdow n sw itch is at a saf e location.

9.10 Check that safety logic (for heater start-up and shut-dow n) is not located below (vertical) furnace. Normally

such a logic is located in a local panel at safe distance (15 meter) from a fired heater.

9.11 One complete burner hookup shall be shown per heater including all instruments and all provisions f or saf e

startup, operation and shutdow n of the heater w ith associated equipment (e.g. fans).

9.12 Check final certified vendor draw ings for equipment correctness.

9.13 Check prescribed saf ety distances, e.g. f or example:

12 meter to catch basins15 meter to process equipment exclusive airf in coolers

22 meter to airfin coolers

9.14 Check that the damper can be operated from grade.

9 15 Check that the f lue gas oxygen analyzer is located at grade

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9.15 Check that the f lue gas oxygen analyzer is located at grade.

9.16 Check heater or boiler location f or maintenance and construction accessibility and also f or decoking,

regeneration or soot blowing activities.

10. Relief Systems

10.1 Check that inlet lines to relief valves are self draining into process equipment.

Is its proper functioning not hampered by the nature of the process f luid? The allowable pressure drop across the

inlet line of relief valve is limited to 3% of the set pressure (at maximum capacity). If pressure drop is too high, the

line size shall be increased.

10.2 Check accessibility of the relief valves for maintenance and inspection. Check if relief valves have been

installed at proper elevations. Distinguish betw een valves releasing to atmosphere or relief header.

10.3 Check pressure relief discharging to atmosphere f or saf e location and direction.

10.4 Check that discharge pipe is drainable. If so, does drain not impinge on other equipment? Have measures been

taken to avoid freezing of moisture on relief valve seats in low temperature service?

10.5 Check tail pipes for adequate support against reaction forces.

10.6 Check that the tail end of the vent pipe is w ithin the action radius of fire ex tinguishing equipment. If not, has a

snuff ing steam connection been provided?

10.7 Check that length of piping is minimized for safety relief valves discharging into a closed system.

10.8 Check that outlet line from relief valves is self draining into flare header.

10.9 Check that flare lines have no pockets and that they are sloping to the flare knockout drum.

10.10 The back pressure on the relief valves (calculated during the design) shall be checked w ith the actual layout

of the flare system.

10.11 Check destination of outlets f rom 1” x 1” thermal relief valves to atmosphere or grade f or safety.

10.12 In case hooked up to vessel, check if steamtracing is required to prevent plugging.

10.13 Check looking devices of the valves at inlet/outlet of the relief valves.

10.14 Check that valves w ith Castell lock system (or other sys tem) are properly installed.

10.15 Check that saf ety relief valves and inlet/outlet lines are adequately supported.

10.16 Check that tail pipes of relief valves require w eather protection cap.

10.17 Check that the proper type of relief valve has been specif ied, for example in waxy service piston type in

view of plugging.

10.18 In case of 1” x 1” thermal relief valves, the inlet of the relief valve shall be self-draining to the process line,

the discharge line can be connected to a collecting header w hich shall be discharging under slope w ithout pockets

to a vessel. Check if inlet and outlet lines of relief valves shall be steamtraced.

11. Electr ical

11.1 Check that all substations, cable trenches and cable trunkings etc. are properly located and not obstruc ted by

equipment etc.

11 2 Check that lighting panels transformers w elding outlets junction boxes etc are properly located

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11.2 Check that lighting panels, transformers, w elding outlets, junction boxes, etc., are properly located.

11.3 Check that remote control unit of electric motor is properly located versus discharge valve of pump.

11.4 Check that TV cameras are properly located to survey the required area or objects.

11.5 Check that safety s w itches for shutdow n of equipment in case of fire are located in safe areas or an safe

distance.

11.6 Columns of pipe racks are normally used to install junction boxes for both electrical and instrumentation

purposes.

11.7 Check that orientation and access is not hampered by location of control valve stations, steamtracing stations,

utility s tations or other piping lay-outs.

11.8 Ensure that instrument and electrical schematic lay-outs clearly indicate w hich side of the column is reserved

for these junction boxes.

11.9 Check location of lighting f ixtures.

12. Instrumentation

12.1 Check instrument connections f or good accessibility for operation and maintenance and try to group them

together as far as practical.

12.2 Check that all instruments are on the model and have been correctly tagged.

12.3 Check that instrument cable trenches and trunks are properly routed and in accordance w ith applicable

instrument and underground draw ings.

12.4 Check that local control panels, main junction boxes, etc. are properly located.

12.5 Check location and accessibility for operation and maintenance of all instruments. Mind removable piping on

both sides of reactors (sw ing elbow s), here special design is required.

12.6 Check straight length of or ifice runs.

12.7 Check clearance above external displacers f or removal of f loats.

12.8 In case of a package unit is show n as a block, provide a tag list of instruments included in this block.

12.9 Check platform clearance around level gauges, control valve stations, relief valve stations, especially for 

Camflex type control valves w ith bypass.

12.10 Show all personnel protection, gas detection points (snif fing points).

12.11 Show all emergency hand sw itches.

13. Undergr ound

13.1 Check that location of catch basins, manholes is properly indicated. On special request of the client

underground lines w ill be show n.

13.2 Check actual run of drain points to UG system.

13.3 Check location and interface betw een AG and UG piping of pressure systems, cooling w ater, fire w aters

(sprinklers) etc.

13 4 Check that downspouts have been provided (floor drains of elevated floors fire decks concrete structures)

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13.4 Check that downspouts have been provided (floor drains of elevated floors, fire decks, concrete structures)

and agree which department prepares material take off for these.

13.5 Check routing of electrical and instrument cable trenches , and their rising points w ith respect to UG piping,

foundations etc.

13.6 Check routing of sew ers in relation to supports required for large bore control sets, etc.

13.7 Check actual positions of f ixed fire w ater equipment (elevated hydrants, monitors, sprinkler manifolds, dry

risers, etc.).

13.8 Check that locations of saf ety show ers, eye w ash basins and jump-ins are easy access ible and near to

dangerous points, and these safety show ers are connected to the sewer.

13.9 Chemical sew ers (open and closed sys tems) including underground vessel and pump shall be shown.

13.10 Check that the landings for stairs, supports of platforms, etc., do not interfere w ith locations of catch basins,

manholes and cable trenches.

14. Civil/Architectural/Structural

14.1 Check that column numbers (e.g. in pipe rack) are tagged.

14.2 Check tat elevations of operating floors are shown on tags.

14.3 Check that all structures w ith bracing and pipe racks are show n, inclusive fireproofing.

14.4 Check operability and location of all trolleys and lifting beams.

14.5 Check that all buildings, sheds, etc. are properly sized and located.

14.6 Check door locations in view of safety.

14.7 Check location of analyzer house(s), if fast loop requirements for correc t measurements (samples) w ill be

met.

14.8 Check that bracing of steel does not f orm an obstruction.

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8/13/2019 BN-DG-C6 Design Guide for Checking of Design Model and Definition of Percentage Completion

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DEFINITION OF PERCENTAGE COMPLETION

The follow ing descript ion is a def inition of each percentage complete stage of the piping model. Company normal

pract ice is to make model review s at 30, 60, 90 and 100% completion.

Definitions

30% Completion

8/13/2019 BN-DG-C6 Design Guide for Checking of Design Model and Definition of Percentage Completion

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p

Battery limits located

 All major equipment located

Major structure shown

Major pipe rack shown

Large bore cr itical process lines studies on the model

Piping studies 15 - 20% complete

Location of unit access w ays f or mobile maintenance and f ire fighting equipment show n

Comments from Client for operation and maintenance incorporated

60% Completion

Comments f rom Client 30% model review incorporated

Ready for Client’s comments for operation and maintenance

 All equipment located

Piping studies 70% completed

 All large bore process lines and utility mains show n

In-line instruments show n for lines installed

Instruments on equipment located. Local panels show n

Main cable trays installedUnderground instrument and electrical cable trench installed

 All structures (concrete and steel), ladders and platforms shown

 All pipe racks show n

Major pipe supports show n. This includes supporting structures for heater transfer lines, heavy overhead

lines, flare lines, etc.

Major fire fighting equipment located

Manholes and catch basins located

Services stations located

90% Completion

Comments f rom Client 60% model review incorporated

 All piping shown

Steam tracing supply and condensate stations show n

Safety show ers, eye baths or jump-in baths shown

Piping studies 100% complete

Instrumentation, including cable trays 100% complete. Electrical cable trays 100% complete

 All major pipe supports located

 All sew er and underground fire w ater mains shown, including manholes and catch basins

 All fire fighting equipment located

100% Completion

Client’s f inal comments f rom 90% model review incorporated

Model updated to latest issue of PEFS’s, PEUFS’s, line tables, arrangement draw ings and f inal equipment

8/13/2019 BN-DG-C6 Design Guide for Checking of Design Model and Definition of Percentage Completion

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p g g q p

drawings

 All sprinkler mainheaders show n

Model ready for shipment to site

 

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