ED/3-108-01-P&ID

Revision 03 - November 2004

Document No. Rev.

ERF Title Document Title ERF No.

Cadding Erf for SRD-2 wellhead derating 2095

ORIG

INAT

OR

CHEC

KER

L.E.

Date:

IFA / IFH / AFC InitialSignDate

Item No. DESCRIPTION 100% 100% Spot Remarks1.0 General

1.01 Latest soft file taken from EDL and got locked there.1.02 Drawing are shared with the other discipline. (Piping and Instrument)1.02 Concept has been locked by BPP.1.03 Proper isolation for the line new line or existing line are provided.1.05 All the P&IDs to be modified under current ERF have been As-Built.1.06 For IFA, revision no. is alpha-numeric.1.07 For AFC, revision no. is numeric.1.08 New revision cloud and triangle shown.

1.09

1.10 For IFA, Approved By is kept blank.1.11 For AFC, Approved By is filled with the BPP Authority for P&IDs approval.

1.12

1.13 Notes are specific and convey the required intention clearly.

1.14

1.15 Agreed Client comments on the previously issued P&ID incorporated.1.16 Symbology for modification as per the Legend.

1.17

1.18 Switched tag no. and alarm tag no. are same. - As per number generated1.19 Criteria to decide the Set-points agreed.2.0 Drawing Presentation:

2.01 Drawing professionally presented and well balanced

2.02 Drawing conforms to Drafting Standard set for P&IDs.

2.03

2.04

2.05

2.06 Any revision inside scope cloud is indicated as revision cloud.

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A.F.E. (Cost Code), Date, Modification Description, ERF No., Drawn By & Checked By Initials entered.

To keep the previous revision clouds, confirmation has been got from FOE. Generally, all previous revision clouds shall be hide using a different layer.

Connectivity, i.e., P&ID Nos. in connectors of the connecting sheets and the Line Nos. are matching.

Control and Shutdown Philosophies have been agreed and frozen and discussed with I&E

If existing drawing is modified, new modifications are shown in thick layer and existing system is shown dim layer.

If any existing item is relocated, it is shown in Demolishing cloud on P&ID from where it is relocated and in scope cloud on P&ID to which it is relocated. "RELOCATED TO " and "RELOCATED FROM" are tagged on clouds respectively.

If any existing item is replaced with new item, existing item is shown in Demolishing cloud with Tag "TO BE DEMOLISHED" and new item is shown in scope cloud.

New concept requires only cloud but not tag.

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2.07 As built information on existing P&ID is indicated as revision cloud.3.0 Vessel (Slug Catcher, Blow Case, Separator, Knockout)

3.01

3.02

3.03 De-rated design conditions, if applicable, marked.

3.04

3.05 For new vessel, no. and tags of nozzles as per data-sheet / fabrication dwg.

3.06

3.07

4.0 Well head system /piping And Flow line Piping

4.01 As per ENTS-400

4.02

5.0 Well Head Compression System5.01 Compressor inlet & Outlet cooler by pass to be provided. If instructed by client

5.02 If instructed by FOE

5.03The Elevation of Mini blow case from LLL must be sufficient..

5.04

5.05

6.0 Piping

6.01

GENERAL NOTES & REFERENCES

6.02General notes appropriate and relevant to drawing

6.03Reference appropriate and relevant to drawing

6.04

6.05 Agreed Client comments of previous issue incorporated.DRAWINGS PRESENTATION

6.06 Drawing professionally presented and well balanced6.07 Drawing conforms to Drafting Standard (JGC / Client) UEP Standard

Tag No., Service Description, Size, Operating Pressure/Temperature, Design Pressure/Temperature, Oil/Water/Gas Flow rates mentioned.

As communicated by client.

In case the vessel is relocated from one facility/location to other, it has been verified/confirmed that the vessel's DP/DT are safe against the new operating conditions.

For the relocated vessel, PSH, PSHH, PSL, PSLL, LSLL, LSL, LSH, LSHH are verified/marked for the new service. (Calculation must be save in the ERF / Process / Calculation folder.)

The PCV and LCV relocated with the vessel are checked for the new conditions (data provided to for rating / evaluation purpose must be save in soft form.).

Only if instructed by client in SOW

For the relocated vessel, PSV set pressure and orifice size are evaluated under new conditions.

Only if instructed by client in SOW

Follow the pipe thickness sch#, in light of Pakistan regulatory authority, and discussed in the K.O meeting with F.O.E. In case if not yet addressed kingly communicate with piping engineer and follow the pipe thickness after 3mm corrosion allowance.

Is the SSV actuating pressure addressed? In case if SSV actuating pressure is greater then conventional wellhead shutdown panel pressure (90 psig), then a new nitrogen cylinder / panel shall be required.

Incorporated in STD Drawings

IF ignition source is present (such as engine, muffler, without spark arrestor) then all atmospheric vents shall be must be 100ft away from the ignition source. (or discuss with FOE)

Review if instructed by client in SOW

In case of compressor relocation clarify the BTU of gas required to operate the compressor and compressed gas composition. (this must be discussed during the conceptual stage, if not discussed kindly address)

Review by Client's end. Only if instructed by client

Mini blow case capacity must be discussed. (this shall be discussed during conceptual stage, however if not discussed kindly address)

Review by Client's end. Only if instructed by client

Tie-in points consulted with Piping (for the piping ease) and marked properly under the current revision cloud.

Cross references to other P&IDs / Dwgs, Terminology correct , consistent and according to the legend

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6.08 Clouds and diamonds shown for revisions Triangle Shown

6.09 ERF Standard used

6.10 Line No. marked as per the Numbering Procedure. UEP numbering6.11 Line Class verified against the worst operating conditions.

6.12 Line Class Break marked as per the JPEP-210-120-1-71E, Clause 5.5. UEP Standard

6.13

6.14

6.15 Isolating valves at inlet and discharge of an in-service PSV to be LO & FB.6.16 Check valve installed where there is possibility of reverse flow.

6.17

6.18 For size less than 2"

6.19 If instructed by client

6.20 Break between Above Ground and Under Ground provided. Following UEP Standard6.21 Flow arrows marked properly.

6.22 Check valve direction is correct as per the required flow direction.

6.23

6.24

6.25 As instructed by client

6.26

6.27 No piping of 300# rating (B class) is used unless otherwise specified by BPP. If instructed by client6.28 Before AFC discussed the tie-in points with the piping engineer.7.0 Instrumentation

7.01

7.02 Required Fail-Safe position, FO or FC, marked at the Control Valve.

7.03

7.04

Note:- Any check item marked NA by Originator should be verified by Checker and LE

Units consistent & according to project specified units (From ITB on Feed Book)

In case BPP asks to use a higher Piping Class than that required (and communicated by DH to BPP), put a Note on P&ID for such particular case that;"Piping Class XX has been used against the required YY, due to material availability."

Confirm if insulation is required on the line. If required thickness to be decided as per the BPP standard.

"To be Blinded" marked at the remaining process line, wherefrom the line/vessel is demolished.

"To be Plugged" marked at the remaining instrument connection, wherefrom the line is demolished.

Future connection, if required, provided with Blinded Flange or Blinded Valve, as per the future connection philosophy agreed with BPP.

Following notes are marked on the Wellhead P&ID:"Riser to be at a Min. distance of 140 ft. away from the Well Cellar.""Post Weld Heat Treated Special Fabricated Spool." [@ downstream of Choke]"There should be no Live Line/Equipment within a distance of 300 ft from the Well Cellar."

Incorporated in STD Wellhead drawing

For the Wellhead P&ID, it has been confirmed from BPP whether Chemical Injection shall be done at a Single or at Two points.

Normal Open (NO), Normal Close (NC), Lock Open (LO) or Lock Close (LC) marked at manual valves, as per requirement.

If Pump is relocated to another facility, new suction / discharge line sizes are verified against pump rated Head and NPSHA.

For Control Valve, it has been confirmed from BPP whether Isolation & Bypass valves shall be required or not.

Local mounted Instruments, panel mounted or DCS instruments etc. are distinctively shown as per legend according to process requirement.

Local / remote indications and alarms / trips are shown on P&ID as per control & shutdown philosophy.

P&ID