CLIENT: RRUVNL

PROJECT: 2X660 MW STPS AT CHHABRA

EPC CONTRACTOR: L&T

EPC'S CONSULTANT: L&T-S&L

L&T-S&L JOB NO.: L764000

ATTACHMENT-2

LP VALVES

LEGEND SHEET

Doc. No. : L764000-DC01-00-ZEN-130010

Rev. 1

Date : 16 OCT 2015

TAG NO. DESCRIPTIONSIZE (DN)

MMRATING TYPE VALVE CONFIGURATION

OPERATING

CATEGORYBODY MATERIAL

END

CONNECTIONACCESSORIES

PARENT LINE

TAG

DESIGN PRESSURE

Kg/cm2 (g)

DESIGN TEMP.

°C

SIZE (DN)

MM

SCHEDULE/

THICKNESS (MM)

Status Accessories End Connection

NW : New Item FC : Fail Closed SW : Socket Welded Joint

RV : Revised Item FO : Fail Open BW : Butt Welded Joint

VD : Voided Item LC : Locked Closed FL : Flanged Joint

RP : Repeated Item LO : Locked Open TH : Threaded (Screwed) Joint

VS : Vacuum Service

GS+ : Valve limit switch close

GS- : Valve limit switch open

GT : Valve Position Transmitter

Legends FL : Fail in position

MAN : Manual Operator

MO : Motor Operator

GO : Gear Operator

BW : Butt Welded End

SW : Socket Welded End System Code

UPSTR : Up Stream

DNSTR : Down Stream LAB : Feedwater Piping System

PO : Pneumatic Operated LAD : HP feedwater heating system

VLV : Valve LAE : HP desuperheating spray system

ISO : Isolation LAH : Start-up and shutdown piping system

DRN : Drain LAR : Emergency feedwater piping system incl. storage

HDR : Header LBA : Main Steam System

AUX : Auxiliary LBB : Hot reheat piping system

STM : Steam LBC : Cold reheat piping system

LPH : Low Pressure Heater LBD : Extraction piping system

HPH : High Pressure Heater LBG : Auxiliary steam piping system

HTR : Heater LBQ : Extraction steam piping system for HP feedwater heating

FWHV : Feed Water Heater Vendor LBS : Extraction steam piping system for main condensate heating

QCV : Quick Closing NRV Vendor LCA : Main condensate piping system

DTV : Drive Turbine Vendor LCB : Main condensate pump system

BPVV : Bypass Valve Vendor LCC : Main condensate heating system

PCVV : Power Cycle Valve Vendor LCE : Condensate desuperheating spray system

TGV : Turbine Generator Vendor LCH : HP heater drains system

IV : Instrument Vendor LCJ : LP heater drains system

CEPV : Condensate Extraction Pump Vendor LCW : Sealing and cooling drains system

BFPV : Boiler Feed Pump Vendor LBU : LP Bypass down stream system

VPV : Vacuum Pump Vendor QUA : Sampling system for feedwater systems

HO : Hydraulic Operated QUC : Sampling system for steam systems

MOV : Motor Operated Valve GHC : Demineralized water system

TCV : Temperature Control Valve QCE : Dosing system

PCV : Pressure Control Valve QJA : Nitrogen gas supply system

CVV : Control Valve Vendor PA : Condenser cooling water system

LCV : Level Control Valve GDK : AHP make up water system from ETP

DRPLG : Dripleg QC : Chemical feed system

LT : Low Temperature SC : Compressed air system

HT : High Temperature GK : Potable water distribution system

NRV : Non return Valve PG : Closed cooling water system

MS : Main Steam GHD : Service water system

CRH : Cold Reheat PC : Auxiliary cooling water system

HRH : Hot Reheat GA : Raw water supply system

EXT : Extraction GBK : Clarified water system

PT : Pressure transmitter GN : Plant drain system

PG : Performance Guarantee GHC : Condensate storage and transfer system

PI : Pressure Indicator

LT : Level transmitter

LI : Level Indicator

FT : Flow Transmitter

BLR : Boiler

BFPT : Boiler feed Pump turbine drive

SH : Superheater

SOL : Solenoid operated

SRV : Self regulating valve

BFVV : Butterfly valve vendor

LPVV : Low Pressure Valve Vendor

DSVV : Desuperheater Valve Vendor

FCV : Flow Control Valve

FV : Flow Isolation Valve

FEV : Flow Element Vendor

IBV : Integral Bypass Valve

CRV : Chamber Relief Valve

REMARKS

VALVE

DESIGN

TABLE

(VDT)

IBR/

NON-IBR

SR.

NO.STATUS

VALVE DETAILS

P&ID DWG. NO.

PIPE

DESIGN

TABLE

(PDT)

SYSTEM

FLUID

TYPE

PIPE