Dismantle Tank Procedure Rev A

PAGE 1

PROJECT

:

TANK FACILITY UPGRADE, BANGKO GS

DOCUMENT TITLE

:

DISMANTLE TANK PROCEDURE

DOCUMENT NO.

:

ME - GSBGKO - TFU - QC - 001

PREPARED BY :

REV

A

DATE

PURPOSE

18-Feb-13

Issued For Information

CHECKED BY :

APPROVED

TIMAS SUPLINDO PT. NAME

NAME

DK

DS

of

CPI NAME

DATE

17

TANK FACILITY UPGRADE, BANGKO GS DISMANTLE TANK PROCEDURE Doc. No :

Discipline :

ME - GSBGKO - TFU - QC - 001 QC

Rev. :

Status :

Date :

A

A

18-Feb-13

Page : 3

of

17

TOTAL OR PARTIAL REPRODUCTION AND/OR UTLIZATION OF THIS DOCUMENT ARE F ORBIDDEN WITHOUT PRIOR WRITTEN AUTHORIZATION OF THE OWNER

TABLE OF CONTENT

Cover

1

Tabulation of revision page

2

Table of content 1. General 1.1 Scope

3 4

1.2 1.3 1.4 1.5

Applicable References Equipment & Material Man Power

5

Safety

2.1 Dismantle Tank Procedure 2.1.1 Sequence for Execution Work

6

2.2 Cleaning The Tank

6

3.1 Dismantle Roof

7

4.1 Dismantle of Shell Plate

9

5.1 Dismantle of Bottom Plate

10

6.1 Attachment

11

6.2 Load Chart

13

TANK FACILITY UPGRADE – BANGKO GS

TANK FACILITY UPGRADE – BANGKO GS DISMANTLE TANK PROCEDURE Doc No : ME – GSBGKO – TFU – QC - 001

Discipline : QC

Rev : A

Status : A

Date : 18-02-2013

Page : 4 of 17

TOTAL OR PARTIAL REPRODUCTION AND/OR UTILIZATION OF THIS DOCUMENT ARE FORBIDDEN WITHOUT PRIOR WRITTEN AUTHORIZATION OF THE OWNER

1.1. Scope

This procedure covers the requirement for replacement of storage tanks. It also includes dismantlement of existing roofs, rafters, columns, shells, and bottom.

1.2. Applicable References

API standard 650, 10

th

standard 653,

Edition, Welded Steel Storage Tank for Oil Storage API Tank

Inspection, Repair,

Alteration, and Re-

Construction Specification TR-06. Replacement of Welded Steel Cone Roof Specification EMS-A-100, Engineering Document and Requirements R equirements

1.3. Equipment and Material Material

Equipment for roof removal or dismantling of roof plate that necessary

1. Cutting Torch and appurtenances 2. Flashback Arrestor 3. Drilling Machine 4. Oxygen Bottle 5. LPG Bottle 6. Grinding Machine & Grinding/Cutting Grinding/Cutting Disk 7. Mobile Crane 100 tons tons 8. Wire Sling, Shackles, Swivel, Swivel, Clamp, Wrench

TANK FACILITY UPGRADE – BANGKO GS DISMANTLE TANK PROCEDURE Doc No : ME – GSBGKO – TFU – QC - 001

Discipline : QC

Rev : A

Status : A

Date : 18-02-2013

Page : 5 of 17


9. Rigid Scaffold if necessary 10.Gas Detector if necessary 11.Wood Plank, Plywood 12. Platform Temporary

1.4. Man Power

Man Power for Roof Removal or Dismantling of Roof Plate shall be qualified and experience, such as : 1. Tank Supervisor 2. Tank Foreman 3. Rigging Foreman 4. Rigger 5. Scaffolder 6. Fitter

1.5. Safety

1.5.1 Contractor shall verify that that roof is safe to work on at all times. times. Contractor shall provide and use planking to support the weight of personnel working on top the roof. Contracto r’s personnel shall not stand and walk on existing steel roof at any time. 1.5.2

In area of work, the contractor shall use a minimum of one 4 ’x8’x3/4” sheet of plywood or three 2 ”x12”x10” long planks side by side for every two men in the area. It shall be the contracto r’s responsibility to see that

TANK FACILITY UPGRADE – BANGKO GS DISMNATLE TANK PROCEDURE Doc No : ME – GSBGKO – TFU – QC - 001

Discipline : QC

Rev : A

Status : A

Date : 18-02-2013

Page : 6 of 17


each of piece of planking is laid to bear on at least two adjacent roof rafters. 1.5.3 Contractor shall shall provide at all times times a planked planked walkway from work areas to stairway access. The walkway shall be 4 ’x8’x3/4” plywood or three 2”x12” planks laid side by side. Plywood or planks are to be lapped 4 inches and nailed together at ends.

2.1. Dismantle Procedure Tank T-03 2.1.1. Sequence for execution work Tank

Site preparation preparation work : The electric / Instrumentation Instrumentation system disconnected Checking all existing pipe was dismantling dismantling and blinded Open all Man hole /Nozzle ( Roof , shell ) Gas freeing Tank cleaning and flushing Entrance permit ,Hot permit Setting equipment , Generator , rectifier panel distribution Safety orientation , Confined space ,etc .

2.2. Cleaning the Tank

Site preparation work and process : for disposal of sludge. 2.2.1. Arrange for 2.2.2.

Select

appropriate

personal

protective

equipment

.

If

fress

air

respiratory equipment is used , ensure that worker do not remove masks while in the tank because of discomfort . 2.2.3. Execute entry permit if tests results and tank conditions are acceptable and

condition are safe for entry , ignition sources have been controlled , no lightning storms storms are threatening ,and the intergrity of the the tank is satisfactory .


Discipline : QC

Rev : A

Status : A

Date : 18-02-2013

Page : 7 of 17


2.2.4. Atmospheric testing should continue periodically ,such as at the start of each

work day , at shift change ,and during the shift as conditions change due to temperature increase , agitation of sludge, leaking tank bottom exposed ,piping leaks , hydrocarbon absorbed in roof, etc . 2.2.5. If the tank has side manholes , consider the use of a water hose stream to start

cleaning from out

Side the tank . The employer shall determine determine the personal

protective equipment and vavor concentration at wiworkers may safely

begin

cleaning the tank from outside the man way without entering the tank .Ensure that hose nozzles are electrical bonded to the the tank .Such cleaning cleaning may require and and entry permit if personnel must must break the plan of the manway . Remove loose sludge , scrape or hydro blast those internal to be required When necessary ,enter the tank and wash and remove waste materials .A vacuum truck may assist in this . Tank nozzles , coulomn ,are cafable of trapping hydrocarbons and should be cleaned . Be alert to leaking tank bottom with entrapped product . Clean areas above the inside tank tank and waste materials should should be removed. Ensure contiuous ventilation throughout the cleaning process. Maintain control over potential ignition sources. In warm climates , monitor workers for heat heat stress.

3.1. Dismantle of Roof Plate

Dismantling of roof plate shall include dismantling roof rafter and top angle . Generally dismantle work shall follow the opposite quarter system means when roof dismantling of quarter completely executed next dismantling must be the opposite quarter or two team work at the same time on both opposite quarter . The following initial step shall be fulfilled prior to execution of the dismantling work :


Discipline : QC

Rev : A

Status : A

Date : 18-02-2013

Page : 8 of 17


Hot permit must be issued because several hot cutting work shall be conducted Working

highly shall be executor training course course before execution started started and

permit must be issued by client owner ( HSE dept.). Intall riggid scaffold around the out side of top to down bottom shell circumferenc approx. 4’ -0”( 1.2 m) below top angle .Install riggid scaffold conducted by scaffolder. Lifting Temporary Platform on roof plate as per drawing. Temporary Platform will be use for standing place when cutting a roof plate. Inspect the roof condition to verify that the roof is safe to work on at all times and above / below roof by cold cut a window on roof plate to check the availability of flammable crude oil in storage tank and freeing gas. This dismantling work shall shall be equipped the following equipment and tools - Crane 100 Tons capacity - All lifting tools and handling appurtenances (Swl sling , shackle ,clamp ,spreader bar,etc ) - Safety cables are reeve to blank nuts attached around circumference - Riggid scaffold ( Bracket standard ) around top shell circumferential of tank - Cutting devices (oxy-acetylene ) - Two plies of three Planks 3 /4’’ thick or plywood sheets 3/4’’ thick thick for support the workers on existing roof plate . Coordinate the sequence of work with other work team When the preparation completely finished and safe for working on ,dismantling of roof shall be executed and sequenced as follow : Remove all tank appurtenances attached on the roof plate.This step shall be directed and supervised by COMPANY Representative officer. Dismantling proses shall be started from centre of roof to the peripheral of roof . 1. Remove the weld weld deposits or cut the roof plate nearby nearby the weld weld joint . 2. Fit the lifting lifting or handling handling device ( Clamp , shackle shackle , Sling , Etc ) and prepare the sling and sprider bar for lifting plate . 3. Drawn the plate location of the boom of crane coverage coverage area .


Discipline : QC

Rev : A

Status : A

Date : 18-02-2013

Page : 9 of 17


4. Take the plate down down and transport transport to cutting area where the the plates shall be be cut to standard size 5. When quadrant quadrant completely , the team must must move from the opposite quadrant. 6. When all roof plates have completely removed , install 3 position of of guy lines which shall connect the centre coulomn to intermediste coulomn away from rafter shal be removed. Following the center coulomn after all inner rafter completely removed . 7.

Inner intermediate intermediate roof roof rafter shall be removed in second step .Left one rafter at each corner of inner girder.Install girder.Install guy lines that that connect two innercoulomns innercoulomns to next two coulomn at intermediate coulomns circle of coulomn –girder where the inner shall be dismantled .Repeated this step until all inner coulomns and girders and attached rafter completely removed .

8.

Same

step

shall shall

be

used when

excecute

outer outer

intermediate

rafter rafter

,

intermediate coulomn-girder and finally outer rafters and coulomns-girders . 9.

Dismantled rafters rafters , girders girders and coulomns coulomns are taken down to the bottom inside tank and step by step transported out side the tank to the storage area through the door sheet or upper shell before shell shell be dismantled .

4.1. Dismantling of of Shell plate Tank

Shell plate dismantle after Roof plate ,rafter ,coulomn ,girder , have completely removed ,It must be on the upper Shell to lower Shell as dismantling sequences . Before Shell activities are started started . All Tank appurtenances attached attached on the shell plate plate shall be removed carefully and stored include tools Instruments Instruments and accessories . The following step dismantling of Shell plate shall be execute and sequenced as follow : 1. Dismantling proses shall be started started from upper shell plate to lower of shell plate . 2. Install riggid riggid scaffold ( bracket standard ) around shell plate plate circumference approx approx every range 1,8 metres and weld bracket bracket clip for hanger of riggid scaffold scaffold beginning


Discipline : QC

Rev : A

Status : A

Date : 18-02-2013

Page : 10 of 17


from upper Shell to lower shell course with layer by layer every segment of shell circumference . 3. Fit lifting or handling device ( Vertical clamp ,Spreader bar Shackle Shackle , Sling belt or wire sling , wire rope , ). 4. Set up position lifting Crane Crane for lift shell and hanging boom of Crane Crane while prosess cutting start . 5. Remove the weld deposit deposit or cut at position welding seam joint as partial segment segment per segment by cutting flame . 6. Remove shell by lifting Crane after prosess prosess cutting finished for segment by segment on circumference of shell plate to storage yard and the same event . 7. Continue prosess cutting cutting and lifting at at regular position step by step until to lower shell finished .

5.1. Dismantling of of Bottom plate Tank

Bottom plate may be dismantled at same time with dismantling work of roof plate . But have to to be finish after roof rafters and and coulomn removal shall shall be sarted.As sarted.As described above the removal of bottom plate shall be coordinate with roof plate dismantling sequence . It must be done on the opposite quadrant against the roof plate dismantling activities .Before bottom activities are started all attached of apputunances on the bottom plate shallbe removed carefully and storage . Remove filled weld deposit or cut nearby the filled weld joint segment by segment as arranged Bottom existing and finally transport bottom plate in the sequence as described above to storage Area and cut as per requirement .


Discipline : QC

Rev : A

Status : A

Date : 18-02-2013

Page : 11 of 17


6.1. Attachment

Figure 1. Assesment Site


Discipline : QC

Rev : A

Status : A

Date : 18-02-2013

Page : 12 of 17


6.1.2. Assessment

Do assessment for make sure the metodh, equipments,and equipments,and tools can be aplied on Site.

Figure 2. Lay Out


Discipline : QC

Rev : A

Status : A

Date : 18-02-2013

Page : 13 of 17


6.2 Load Chart

TANK FACILITY UPGRADE- BANGKO GS DISMNATLETANK DISMNATLE TANK PROCEDURE Doc No:

Discipline:

ME- GSBGKO- TFU- QC- 001

QC

Rev:

Dale:

A

Page: 14of 14 of 17

18-02-2013

TOTAL OR PARTIAL REPRODUCTION AND/OR UTILIZATION OFTHI OF THI8 DOCUMENT ARE FORBIDDEN WITHOUTPRIOR WITHOUTPRIOR WRITIEN AUTHORIZATION OFTHE OFTHE OWNER

KATO

NK-1000

e W ..nb at

...,_..... _ . ,_. •

"

.

-

..

.. ..

..

..

1$ I

..

,,

11 fj ( ml

••

..

••

" ••

••

..

.. ..

\\,...-iwc r.lt u:r (ml ft111\ft' '«Mit:l"hu cbts Mt trll:iuclt th.: deft ._-,_n boom and jh

-----........._UCHIMIYA -----........._ UCHIMIYA

NK-1000 PAGE020F05


Discipline:


QC

Rev: A

Dale:

18-02-2013

Page: 15 of 17

OF THI8 DOCUMENT ARE FORBIDDEN WITHOUTPRIOR WITHOUTPRIOR TOTAL OR PARTIAL REPRODUCTION AND/OR UTILIZATION OFTHI WRITIEN AUTHORIZATION OFTHE OFTHE OWNER

KATO

-----........_UCHIMIVA -----........_ UCHIMIVA

NK-1000

NK-1000 PAGE030F05


Discipline:


QC

Rev: A

Dale:

18-02-2013

Page: 16 of 17

OF THI8 DOCUMENT ARE FORBIDDEN WITHOUTPRIOR WITHOUTPRIOR TOTAL OR PARTIAL REPRODUCTION AND/OR UTILIZATION OFTHI WRITIEN AUTHORIZATION OFTHE OFTHE OWNER

KATO

-----........_UCHIMIVA -----........_ UCHIMIVA

NK-1000

NK-1000 PAGE040F05


Discipline:


QC

Rev:

Dale:

A

Page: 17 of 17

18-02-2013

OFTHI THI8 DOCUMENT ARE FORBIDDEN WITHOUT WITHOUTPRIOR PRIOR TOTAL OR PARTIAL REPRODUCTION AND/OR UTILIZATION OF WRITIEN AUTHORIZATION OF OFTHE THE OWNER

100t

KATO

NK-1000

lr•• to n.s4 Uwo14-'ld 'l d chAn '--'.._.I ...........,_ .................u..llllftnft ••.,_ .................u........................................

'•••w---...._.....,...... _,.,.

•

·--

.

_...

....,.._..._ ._.,......_ .........w ...._..., ..

•

•

.,...,.....,•.a:::n..

.....,

.\._... ...

•

._.

........ ...

..... lllbl, .....d.ll ......

.....W..IIaf:i ..... W..IIaf:i

,_.._

...,

dldi,_

WI ......

......... ......... ... . . . .. . . . Jill a.uu......... ... . ... .., .

•

.

. . . . . . . .. .... ... . . .....

. . . . ....... ........ .... .... ...

................................ ....-t...................

...,,..

.

.._ .... .................. T.-a.,

..

.,..,

.."""" . . .. """"

. . ._.,.....h . lb

-..laa

....W....._...,_

........................ ...

... . .

.. "•

..,

............

.. ......... _ .

...

a .

...-.,.......................... ... .........

..

. .

..._ ..n...,.•..,-.,.._..., ... _.._..,._ """........,. ........ ........ n.-.... ..,..........._ •

..

....

.

.. ..

----......._ UCHIMIYA

NK--1000 PAGE050F05 NK

Dismantle Tank Procedure Rev A

Recommend Documents