Process Trip Bypass Procedure Sulfur Block.docx

NRL-FAF-SRB-014 National Refinery Limited Korangi – Karachi PROCESS TRIPPING / ALARM BY-PASS AUTHORIZATION

Specification of Work

Date: Department: SULFUR BLOCK

Equipment / Instrument Identification: Exact work location: Reason for By-passing: Work to be performed: Equipment Securities by pass (Strike the trait) Thermal Reactor/ Incinerator Compressor Running status off Low low flow of Combustion air High high pressure of combustion air Burner detection off High high temperature of furnace High high level of 312-V1

Column

Compressor

Pumps

High high temperature of Acid gases to 312-F1 Low low temperature of Air

High high discharge pressure High high oil temperature

High high temperature of air

High high inlet differential pressure

Low low level

High high temperature of column High high level of column If 312-F1 stops

High high level of 312-V2 Low low flow of Amine acid gas Low low level of 312-E1

Precaution to be taken by performing authority 1. 2. 3.

By pass system existing at specific job? (Yes/No) Did joint inspection of the work site make? (Yes/No) Did the Unit Engineer discuss with all concerned and well informed about all securities of the bypass equipment? (Yes/No) Unit Engineer / Shift Engineer

Job begins Job ends

Maintenance Engineer

Hr Date: Hr Date:

Signature Manager Sulfur Block Name: Muhahammad Irfan NRL No. 11143

Signature Manager Maintenance II Name: NRL No.

Close Out after Job completion

Remarks:

Signature Manager Sulfur Block Name: Muhahammad Irfan NRL No. 11143

Signature Manager Maintenance II Name: NRL No.

Any other