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PRESSURE SAFETY VALVE

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GENERAL VALVE SPECIFICATION
1 TAG NO. PSV-COM.03 36 SAFETY OR RELIEF Relief
37 VALVE TYPE Conventional (Note 3)
2 P&ID NO.
38 NOZZLE TYPE (FULL OR SEMI) Note 1
39 BONNET TYPE Clossed Bonnet
3 SERVICE Fire Water
40 SEAT TYPE Metal-to-Metal
4 LINE / VESSEL NO. 6"-FW4-L-UJOO-008-N 41 SEAT TIGHTNESS API 527
BASIS OF SELECTION 42 NOISE (dB) <85
5 CODE & STANDARD ASME VIII, API 526 & 520 MATERIALS AND CONNECTIONS
FIRE OTHER - Pump Runout 43 BODY MATERIAL Stainless Steel
7 RUPTURE DISC No 44 BONNET MATERIAL Stainless Steel
SERVICE CONDITION 45 FLANGE MATERIAL Stainless Steel
8 FLUID / PHASE Water Liquid 46 SEAT AND DISC MATERIAL Stainless Steel + Stellite
9 FLUID DENSITY (kg/m³) 997 47 SPRING MATERIAL Stainless Steel
10 FLUID MOL. WEIGTH (g/mol) 18 48 GUIDE AND RINGS MATERIAL Stainless Steel
11 REQUIRED CAPACITY (kg/h) 169400 49 BELLOWS MATERIAL Not Applicable
12 APPLICATION Fire Water 50 INLET SIZE 4" (Note 3)
13 OVER PRESSURE FACTOR 10% 51 OUTLET SIZE 6" (Note 3)
14 DESIGN PRESSURE (barg) 15.73 52 FLANGE RATING INLET 150#
15 M.A.W.P. (barg) 15.73 53 OR SCREWED OUTLET 150#
16 NORM. / MAX. OPER. PRESS.(barg) 11.8 11.8 54 INLET RF
TYPE OF FACING
17 SET PRESSURE (barg) 15.73 55 OUTLET RF
18 BLOWDOWN 7% of set pressure SIZING AND CALCULATION
19 VESSEL DESIGN TEMP. (°C) - 56 CALC. ORIFICE AREA (mm²) 1297(Orifice Code: L) (Note2)
20 OPERATING TEMPERATURE (°C) AMB (15~35) 57 SELECTED ORIFICE AREA (mm²) Note 1
21 RELIEVING TEMPERATURE (°C) AMB (15~35) 58 ORIFICE CODE Note 1
22 BUILT-UP BACK PRESS. (barg) 1.57 59 VALVE CAPACITY (kg/h) Note 1
23 SUPERIMPOSED CONSTANT 0.9 60 MANUFACTURER Note 1
24 BACK PRESS. (barg) VARIABLE 0 61 MODEL NO. Note 1
25 TOTAL BACK PRESSURE (barg) 2.47 ACCESSORIES
26 ALLOWABLE OVER PRESS. (%) 10% 62 CAP CONSTRUCTION Note 1
27 COLD DIFF. TEST PRESS. (barg) Note 1 63 TEST GAG -
28 BAROMETRIC PRESSURE (bara) 0.82 64 LIFTING LEVER Yes
29 ISENTROPIC EXPONENT - 65 OTHER -
30 VAPOR PRESSURE (bar) 0.032 CALIBRATIONS AND TEST
31 COMPRESSIBILTY FACTOR "Z" - 66 CDTP Yes
32 VISCOSITY @ WORK TEMP. (cP) 0.89 67 SEAT TIGHTNESS Yes
33 RATIO OF SPECIFIC HEATS 1 68 HYDRO TEST Yes
34 LATENT HEAT OF VAPORIZ. (kJ/kg) 2453 69 IGC TEST Yes
35 DISCHARGE TO Fire Water Tank 70 OTHER -
NOTES:
1- Should be stated by vendor. 3- Should be checked by vendor.
2- Orifice Area should be calculated separetely by vendor. 4- Pump shut off pressure = 14.6 barg