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Shell Global Solutions
Data / requisition sheet for Design book No. : page:
Steam Silencer Contr. job No. : F154
M E S C No. :
1. TYPE OF EQUIPMENT TO BE SILENCED: * Blower compressor vent relief valve control valve
1. Equipment tag number : IV-LZ-213 (Note 4) * 6. Power KW for
1
* 2. Control valve characteristics Cv or Cg : * 7. Number of blades rotating
3. Pressure upstream of control valve : kg/cm2g (max.) * 8. Speed r/min equipment
* 4. Noise type : continuous intermittent
5. If intermittent, state max. duration : (Note 1)
2. ACOUSTIC CRITERIA *
Octave band centre frequency Hz
* 1. Unsilenced sound pressure level dB re 20 mPa
* 2. Silenced sound pressure level dB re 20 mPa
* 3. Unsilenced sound power level dB re 1 pW
* 4. Silenced sound power level dB re 1 pW
* 5. "Dynamic insertion loss" dB re 20 mPa
6. Sound pressure level to be based on a distance of 1 m from equipment surface (give details)
3. PROCESS DETAILS OF SILENCERS 6. SILENCER MECHANICAL DETAILS
* 1. Gas/vapour (give details) : LP Steam 1. Type of silencer required
2. Flow rate, norm./design : 4100 (Note 2) kg/h inlet discharge vent blow-down in-line
3. Inlet pressure : 7.45 kg/cm2g (max/design) 2. Inlet flange size / rating: (Note 3) mm / ANSI*
4. Outlet pressure : (Note 8) kg/cm2g (max/design) *3. Outlet flange size / rating: (Note 3) mm / ANSI*
5. Differential pressure : By Vendor kg/cm2g (max/design) 4. Design pressure : 10 / FV kg/cm2g
6. Inlet temperature; max./min. : 171.2 1
°C *5. Installed in the : open under cover
7. Mol. Weight of gas : 18 horizontal vertical
4. SILENCER MATERIALS SPECIFICATION *6. Impervious membrane yes no
1. Outer casing material : (Note 6) Certificate type: *7. Environment (e.g. climate) (Note 7)
2. Absorptive material: *8. Rain cap yes no
* 3. Impervious membrane material: *9. Drain yes, size : (Note 3) no
4. Internal metallic parts: (Note 6) Certificate type: 10. Wind velocity (design) : (Note 7) mph
5. Corrosion protection - internal : 11. External forces :
- external *12 Supporting structure required : yes no MP 1)
5. SILENCER SPECIFICATIONS 13. Replacement of acoustic material required : yes no
1. Silencer(s) to be constructed in accordance with *14. External insulation required : yes no MP 1)
dB(A)
15. Max. allowable weight : kg
2. Noise measurements, calculations, etc., to comply with 16. Space available for silencer : m
85
* 3. Pressure vessel code : ASME VIII Div. 1 17. Hydrostatic test pressure : kg/cm2g
4. Details of identification marks : 18. Design Temperature : 1 225 / 15 °C
7. GENERAL NOTES
1
1
1. Silencer is used intermittently for unit start-up and discharges to atmosphere.
2. Flow rate shown is for 27% Conv SOR case. Design the silencer for 110% of flow.
3. Inlet piping is 6"-150#. Final connecting nozzle sizes by silencer vendor.
4. SiIencer is located on Diesel Product/LP Steam Generator (IV-E-215)
5. Deleted
6. Minimum metallurgy of Shell will be KCS+3mmCA. However manufacturer may upgrade MOC of Shell diffuser as per their
Standard for the intended service.
7. For information, refer to BEDB-Part B.
8. Silencer discharging to atmosphere. 1
9. For details refer P&ID A166-IV-1159.
1
1
* Select as necessary
1) MP=Manufacturer's proposal
Made by:
JK
Date
7-Feb-13
EQUIPMENT: IV-LZ-213
1
Checked by: Date NAME: LP Steam Vent Silencer
Rev. Letter
Date
0
9-Feb-13
BDRK
Appr. by:
USR
9-Feb-13
Date
9-Feb-13
Sign. JK
PLANT: VGO Hydrotreater Unit
CONSIGNEE: Shell Global Solutions International B.V. Sheet No. 2 cont.'d thru sheet No.
Eng. by: KBR Technical Services, Inc. Equipment No. IV-LZ-213
Principal: BPCL-Kochi Refinery Req. No.
1
20.09.13
ISSUED FOR ENGINEERING 1 MJ MJ MA
DATE DESCRIPTION REV BY CHK APPR
Page 203 of 291
DOCUMENT NO
A166-IV-02-DS-1920