ERECTION METHOD STACK/CHIMNEY PARIT BARU COAL FIRED STEAM POWER PLANT PROJECT 2x50 MW (SITE BENGKAYANG – WEST KALIMANTAN) Surabaya, 23 February 2016 ERECTION METHOD CRANE USING CRANE : 1) Roughter Crane 35 Ton for service crane (Assembly and moving material 2) Crane 50 Ton for erection Chimney and Stack until elv + .40 meter 3) Crane 250 Ton for erection Chimney and Stack until Top level. CRANE 50 TON CRAWLER CRANE 250 TON ROUGHTER CRANE 35 TON ERECTION METHOD Stack & Chimney PREPARATION LIFTING : Preparation material in the laydown area, according to stages of erection that facilitated moving the material to the assembly area. Assembly material for preparation lifting to the stage of erection. For Chimney : Splicing chimney segment for lifting. For Stack : Stack assembly in accordance segment lifting Preparing material already assembly moving to lifting crane area, alternately between the material and the material chimney stack LAYDOWN AREA CONNECTING SEGMENT CHIMNEY ASSEMBLY AREA STACK & LIFTING AREA ERECTION METHOD Stack & Chimney MATERIAL SUPPORTING : • • • Temporary Platform required as the access of workers to perform welding Temporary Platform installed in time before the chimney segment erection Temporary Platform uses material elbow / pipe as a main frame that is welded to the chimney walls and wooden planks are used as an access floor works Temporary Platform • • • • Temporary Ladder Dismantling temporary platform performed after welding inspection by the Quality Control Method release temporary platform by using a cutting torch and grinding To help the workers in the process of releasing temporary platform, we used temporary ladder which is hanging on a temporary platform on top During the process of release temporary platform, the worker must be use safety line ERECTION METHOD Stack & Chimney Temporary Platform Temporary Ladder ERECTION METHOD • • • To facilitate the joint process on the stack need temporary platform columns and bracing middle stack Temporary platform is installed after the column and horizontal bracing installed Temporary Platform using scaffolding pipe as the main frame and planks of wood as a floor to worker’s stand Stack & Chimney ERECTION METHOD Stack & Chimney 1st SECTION : Installation the base plate both chimney with orientation on the direction the flue gas door Leveling the placement on the base plate design in accordance with the basis for calculating the difference in the base plate stack (frame) Install first segment both chimney until level elv + 12 meter with controlling verticality (theodolite). Install stack (frame), base until elv + 12 meter INSTALL CHIMNEY INSTALL STACK (FRAME) ERECTION METHOD Stack & Chimney 2nd SECTION : Install second segment both chimney until level elv + 22,6 meter with controlling verticality (theodolite). Install stack (frame) until elv + 22,6 meter INSTALL CHIMNEY INSTALL STACK (FRAME) ERECTION METHOD Stack & Chimney 3rd - 8th SECTION : Install segment third until eight to both chimney from level + 22,6 meter until level elv + 91,7 meter installation work done as before by adjusting the carrying capacity of crane. Always controlling verticality with theodolite Install stack (frame) from level + 22,6 meter until level elv + 91,7 meter A periodical such as the implementation of the previous segment Installation Chimney and Stack done alternately with a higher precedence than the Chimney Stack heights. ERECTION METHOD 9th Top Level : Installation segment chimney on Top level by controlling the overall Verticality from base to top Doing the improvements and fixtures stack chimney Doing cleaning stack and chimney to prepared BAST Stack & Chimney
