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Indian Oil Corporation Limited has awarded iFluids Engineering to carry out HAZOP Study for Panipat Refinery & Purified Terepthalic Acid unit .The Panipat Refinery is Indian Oil's seventh and most technologically advanced public sector refinery complex in India. Covering approximately 4222 acres of vast land, located in Panipat. The Refinery's capacity was increased to 12 MMTPA in June 2006, and then to 15 MMTPA in December 2010. In addition, there is a plan in the works to increase capacity to 25 MMTPA in the near future to satisfy prospective demand.

The Refinery's major secondary processing units include the Catalytic Reforming Unit, Once Through Hydrocracker Unit, the Resid Fluidised Catalytic Cracking Unit, the Visbreaker Unit, the Bitumen Blowing Unit, the Sulphur Block, and the associated Auxiliary Facilities. A Diesel Hydro Desulphurisation Unit (DHDS) was later commissioned in 1999 to improve diesel quality.

Facilities to be covered under the Study includes:

PR (Panipat Refinery) Unit

Unit NameNo Of P&ID's
PR:CDU, VDU - 03, 04, 1946
PR:NSU-1 Revamp - 422
PR : OHCU - 542
PR : HGU - 620
PR : RFCCU - 741
PR : PSU - 3320
PR : CRU - 830
PR : DHDS - 5221
PR : VBU - 916
PR : BBU - 107
PR : Gasoline Merox - 125
PR : LPG Merox - 135
PR : ATF/SKO Merox - 154
Name: PR : SRU - 229
PR : SSRU - 4418
PR : ARU - 2110
PR : SWS-I (Refinery)1710
PR : SWS-II(Hydro processing) - 1810
OMS : OM&S + Offsites-LPG/Tank farm250
ETP : ETP-I - 6115
ETP : ETP-II - 6212
ETP : ETP-III - 2578
CPP : CPP65
CPP : Utilities54
PRE : AVU-II - 7358
PRE : VDU-II - 7410
Unit Name: PRE : NSU-2 - 593
PRE : HCU - 7592
PRE : HGU - 76,7787
PRE : DCU Revamp - 7887
PRE : Cracked (DCU) LPG Merox - 795
PRE : DHDT Revamp - 7249
PRE : SRU-I - 5514
PRE : SRU-II - 567
PRE : TGU - 5714
PRE : ARU - 5129
PRE : SWS-I - 535
PRE : SWS-II - 544
PRE : SW Stripper (Hydroprocessing) - 205
PRE : SRU - 2531
PRE : TGU - 2614
MSQ : NHT - 30125
MSQ : PENEX - 30148
MSQ : RSU - 30212
MSQ : FCC GDU - 30346
MSQ : MSQU (offsites) - 30445

Total Nos. of P&ID's for HAZOP in the PR units are 1430

PTA (Purified Terepthalic Acid) Unit

Unit NameNo of P&ID's
PX-PTA : NHT, CCR with REGTR - 201, 202103
PX-PTA : Shell Sulfolane - 20436
PX-PTA : Parex - 20539
Unit Name: PX-PTA : XFU - 20639
PX-PTA : Isomer - 20730
PX-PTA : Tatoray - 20829
PX-PTA : BTF - 20919
PX-PTA : PTA-Oxidation/ Purification - 2122
PX-PTA : PTA N2 plant - 375

Total Nos. of P&ID's for HAZOP in the PTA units are 422

Total Nos. of P&ID's for HAZOP in PR & PTA units are 1852

Scope of Study

The HAZOP will be conducted to examine the overall Process design searching for operating deviations and procedures that can lead to hazardous situations or operability problems which  include:

Objective of the HAZOP Study

Deliverables

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