aru 1 otv wmm 2600 000 0015 a1 swro#2membrane loading (1)

7/31/2019 Aru 1 Otv Wmm 2600 000 0015 a1 Swro#2membrane Loading (1)

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FLUSHING PROCEDURESWRO AND BWRO SKIDS WITH FLUSHING

AND CLEANING SYSTEM

ARU-1-OTV-WMM-2600-000-0015-A1 SWRO#2MEMBRANE LOADING.doc Page 1 of 13

Prepared by:Emilie BANCEL

Checked by:Loc BONNET

Approved by:Eric Saez

Position: Position: Position:

SWRO AND BWRO SKIDS

MEMBRANE LOADING

A1 First Issue EBA 27/03/12 LBT 27/03/12 ESA 27/03/12Rev Description Prepared

byDate &Sign.

Checked by Date & Sign. Approvedby

Date &Sign.


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TABLEOFCONTENTS1. EQUIPMENT SAFETY:................................................................................................................................32. REQUIRED TOOLS AND EQUIPMENT .................................................. ....................................................33. BEFORE THE LOADING: PRECONDITIONS.............................................................................................34. LOADING PLAN ...................................................... ........................................................ ............................45. PROCEDURE FOR MEMBRANE LOADING 1ST PASS: ....................................................... ....................66. PROCEDURE FOR MEMBRANE LOADING 2ND PASS: ...................................................... ....................97. CONTROL OF LOADING SCHEDULE......................................................................................................13


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1. EQUIPMENT SAFETY:

Pumps should be started against closed or very slightly opened discharge valves when the downstreampipes are empty or partially filled. It is recommended to fill the pipes with water A/ BEFOREMEMBRANES LOADING, MAKE SURE THE SAFETY PROCEDURE IS APPLIED

Before starting the loading of membranes, it will be compulsory that the RO area is complied with thesafety procedure done by the commissioning manager.Keeping the Safety as 1st priority, it is important to note that this document requires some

considerations:

- No pressure activities in the RO area during the loading of membranes- Make sure the skid is drained after the flushing- The skid in loading will be restricted and exclusion zone under permit to work- All personnel have to wear personal protective equipment and have to be trained

2. REQUIRED TOOLS AND EQUIPMENT

- Glycerine- Pure silicon lubricant as Dow corning 111- Permeate or de-chlorinated potable water- PVC pipe (DN40 DN 50) about 8.5 m long with connexion- Sponge (to be fixed at one end of the PVC pipe)- Membrane positioner (length to be the same as product end cap assembly)- Membrane insertion tool (PVC pipe as shown in diagram below)- Shims (sizes of 1, 2 and 5 mm thickness recommended)- Scaffolding and/or scissor lifts- Personal Protective Equipment (gloves, safety glasses, harness, shoes, safety helmet)- Drinking water in RO Building for the workers

3. BEFORE THE LOADING: PRECONDITIONS

1) The commissioning engineer will carry out all the required tasks will be done in accordance withthe safety procedure of plant.

2) Before starting the flushing, have a look inside of vessel, some pieces can be inside temporary.Remove them and install the o-ring on the end-plate.

3) The flushing of inlet lines (pipes, pumps, ERI and vessels) will be done.

4) Scaffolding installed and secured

5) Check the pressure vessel and the Victaulic interconnections (to ensure the connection doesnot protrude too far inside the vessel blocking the insertion of the membrane).

6) Remove end caps both sides if necessary of Pressure Vessel and HDPE pipe

7) On the permeate end cap remove the blind plug and fit the permeate adaptor ensuring all sealsare in place and lubricated with silicon grease.


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8) Flush out and clean down the Vessel tube with the sponge dipped in Permeate water andglycerine.

9) Wash the feed side tube entrance with one cup of glycerine/permeate mixture (50/50)10) Identify the different membranes with colour stickers (for example)

11) The recording tool of membranes is ready.

12) The identification of vessels is done.

13) The over-head crane will be ready to transfer the crates

4. LOADING PLAN

The RO building is very compact. A loading plan has to be defined properly including the safetyprocedure.The loading of membranes has to be done skid by skid.Below, different views showing the access plan.In blue, scaffoldings will be installed from each side of skid.For the 1

stpass and 2nde pass, third scaffolding will be installed closed to the scaffolding from feed side

where the commissioning team will put the membranes before loading.For the 2nde pass, the loading has to be done from the both side (2 stages). From the door side, aforklift will be appropriate.

SCAFFOLDING

SCAFFOLDING

ENTER

NO ACCESS


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WAY FORHAND PALLET


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5. PROCEDURE FOR MEMBRANE LOADING 1ST PASS:

2 types of membranes will be loaded inside of vessel:

1ST

STAGE: Membranes are loaded and recorded from the feed side of the pressure vessels tothe brine side.

For the correct control of the loading pattern 1 person is nominated to control the position of eachmembrane.He identifies the position of the membrane and ensures that it is placed in the correct location.He only releases a membrane for loading when he is satisfied that the membrane is going in the correctposition & has recorded the vessel ID & Train.Each vessel has a reference with 8 positions/membranes for the 1

stpass. The recorder will use a file

(please find below a model) in order to control the position of each of them.

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The different steps of the 1st

STAGE

1. Lubricate membrane brine seal with glycerin and gently slide membrane into pressure vessel up to2/3rd of element length ensuring the flow direction arrow is pointing into the vessel. Be careful withbisulfite sodium inside of bag before removing the membrane from it.

2. Interlock encaps for coupling membranes elements. Ensure the seal is installed on the Ilec TM.

3. Lift and place the next membrane, wash down the end of the two joined membranes with the 50/50mix and push the membranes into the vessel until the last membrane is again protruding about 1/3

rdof

its length. Repeat the above with all other membranes.

*Note: - Be careful, it is very important to support the membrane so as not to damage or displacethe brine seal.


5. When installing the last element, push all elements completely inside the pressure vessel until the firstelement is properly installed with end plate.

6. Re-fit the brine side end cap assembly with permeat HDPE Pipe.


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6. PROCEDURE FOR MEMBRANE LOADING 2ND PASS:

7 membranes will be loaded with 1 spacer in the last position of loading.

1ST

STAGE: Membranes are loaded and recorded from the feed side of the pressure vessels tothe brine side. Each skid has 2 stages.

For the correct control of the loading pattern 1 person is nominated to control the position of eachmembrane.He identifies the position of the membrane and ensures that it is placed in the correct location.He only releases a membrane for loading when he is satisfied that the membrane is going in the correctposition & has recorded the vessel ID & Train.Each vessel has a reference with 7 positions for the 2nde pass. The recorder will use a file (please findbelow a model) in order to control the position of each of them.

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The different steps of the 2nde Pass:

Follow the steps above for membrane loading 1st

pass.One more step will be added in this procedure. Only 7 membranes will be loaded instead of 8membranes.

This means an element spacer has to be installed:This element spacer, also called a dead man, is simply a standard product water tube withoutpermeate holes. Proper installation is critical to both performance and safety. Only one element spacerhas to be installed per pressure vessel, and it must always be installed in the first or leadelement position. If placed in any other position it may crack or break due to the force being puton the product water tube.

To install the spacer:

1. After loading the 7th

membranes, insert the interconnector in the spacer and push the spacer withinterconnector into the membrane.

2. Insert the adapter and then replace the pressure vessel head. It may be helpful to only partially insertthe interconnector and adapter to leave room to line up the parts. Alternately, a guide stick can beinserted through the permeate port on the vessel head to hold the spacer in line while the parts arepushed together.


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VESSEL SHIMMING PROCEDURE FOR 1ST

AND 2NDE PASS

1st method:

To reduce the risk of the elements being disconnected within a pressure vessel, it is advisable to shimthe vessel properly. The procedure is the same for the 1

stpass and Second pass.

Thrust cone only forthe brine side

1. Remove the end plate with adapter (6)2. Push, if necessary, the membranes to ensure that they are correctly positioned with a specific

fabricated tool.


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3. Remove seal from adapter (5) and seal end cap (3) from end cap (4).4. Lubricate the adapter seal (5) with Molykote 1115. Insert adapter (6) into element permeate tube6. Gently slide end cap on adapter (5) until the bearing plate is in line with the retaining ring grove

7. Gently remove the end cap assembly from the pressure vessel and measure the gap betweenthe adapter (6) and the blind port

8. Insert the required quantity of shims over the adapter (6) to completely fill the gap

Desalination Project

9. Insert the adapter (6) into the end cap port10. Re-install PWT O-rings and head seal (3). Lubricate PWT O-rings with silicon grease (Molykote

111) and head seal (3) with glycerin. Install feed end cap assembly.11. Repeat the above procedure on all other pressure vessels12. Finally install retaining rings13. Re-install all permeate pipe work


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2nde method:

Place the shims by trial and error method over the adapter and then replace the endplate. Shims should

be added until the endplate will not fit entirely in place. Then remove a shim so that the total thickness of

the shims is just enough to allow the endplate to fit.

Repeat this procedure for all vessels.

Note: Shimming must be performed as tight as possible, (A maximum 2 mm gap is

recommended), to avoid excessive movement of elements inside the pressure vessel during

operation, particularly start up and shut down. Loose shimming will lead to adaptor O-rings

being damaged and will compromise permeate quality.

7. CONTROL OF LOADING SCHEDULE

Management and Control for loading

A team leader from NAWS must supervise all tasks:

Manpower = 12 persons estimated

One person records the position of membranesOne team prepare the skidOne team prepare the identification of the membranesOne team prepare the transfer of the crates from containers to RO building + cleaningOne team load the membranesOne team shim/close the end caps

aru 1 otv wmm 2600 000 0015 a1 swro#2membrane loading (1)

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