MS 06 18 - BFB Boiler Pre-Start Checks _Rev B - 15 05 12_

8/9/2019 MS 06 18 - BFB Boiler Pre-Start Checks _Rev B - 15 05 12_

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G HS 024 Appendix 03

DALKIA UKMETHOD STATEMENT

Rev A Page 1 of 6This document becomes uncontrolled when in hard copy

SITE &LOCATION

Diageo CameronbridgeREFERENCE

MS 06 18

This method statement has been prepared for persons carrying out the work detailed below and shouldbe read in conjunction with a suitable and sufficient written risk assessment.

Those carrying out the work must read, understand, and work to the approved Safe Systems of Workincluding the wearing of any personal protective equipment, following local site rules and theimplementation of any Permits for Work.

JOB / TASK DESCRIPTION

Boiler Pre Start Checks SAFE SYSTEM OF WORK – PERMIT TO WORK

Permit required Y/N No – Standard Operating Procedure

JOB / TASK SEQUENCE

ACTION COMMENTS

1. Ensure all safety documents on the boiler plant and

critical systems have been cleared and the plant

returned to its fully operational condition

• All relevant permits cleared

• All relevant isolations removed

• All relevant open work orders closed

Action as required

Check plant log section 8



Note all relevant changes,

2 Carry out a walk down of the boiler plant from top

floor to ground floor – ensure all hatches closed etc

3 Ensure the following systems are available

• Electrical Power

• Demin Water

• Feed water• Cooling water

• Boiler water chemical dosing

• Blowdown

• Instrument Air / Service Air

• Sand / Limestone

• Ash removal

• Bio Gas / Natural gas

• Biomass - Spent Ground Grain

• Flu Gas & Draft Plant

• ESP

• CECON• CEMS

Check limitations log

- see plant log section 3

Check deferred defects log

- see plant log section 4

Ensure all relevant alarms & E stops

have been cleared


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4. Uninterrupted Power Supplies (UPS) Systems

Check all alarms are clear and systems fully

available. Action as required.

• SCADA

• Enmas & Turbine Control

• DC pump

• VWS

• Dect Phones

5. MCC Switchboards

a) Check all alarms clear and systems fullyavailable. Action as required.

b) Ensure all motor control centres (MCCs) arereset and all variable speed drives (VSDs) are

closed up. Action as required.

6. Compressed Air System.

Ensure adequate service & instrument air supplies

are available

7. Demin Water Treatment Plant

a) Ensure caustic & acid day tank levels areadequate

b) Check and record treated water tank level.c) Check and record if any stream is near to a

regeneration cycle.

d) Confirm all alarms are clear and system fullyavailable.e) Ensure demin plant is put into service

Minimum treated water tank level for boiler

start-up 50%.

X Ref MS.06/15

for demin plant start up

8 Limestone and Sand Dosing Systems

a) Confirm both systems are fully available andclear of alarms. Action as required.

b) Check and record Sand Silo level.

c) Check limestone silo not at low level.

If either bunker is at reorder level confirm

delivery date

Minimum level 30% for boiler start-up.

Minimum level 30% for boiler start-up.


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9. Cooling Water System

a) Confirm cooling tower 4 is at normal operatinglevel and that circuits 1 & 3 are fully available

for service and clear of alarms.

b) Confirm cooling tower 5 is at normal operatinglevel and that circuit 2 is fully available for

service and clear of alarms.

c) Confirm Enguard dosing system is fullyoperational on both towers

X Ref MS.06/01

for cooling circuit 1 & 3 start up

X Ref MS.06/27

for cooling circuit 2 start up

10. Bottom Ash Systems (Including Ash Cooling

Water)

Confirm ash removal systems are fully available

and clear of alarms.

a) Bed ash system b) Bed ash systemc) Air Pre Heater

d) Economiser Ash Systeme) ESP Ash system

Refer to Ash removal system start-up

procedure @ MS.06/28

11. Boiler Water Chemical Dosing.

Check that the contents of the LP&HP boiler water

chemical day tanks are adequate and that the system

is available for use. Action as required.

Refer to boiler water chemical dosing

procedure @ MS.06/29

12 Blowdown System

Confirm that all blow down and drain valves are

working correctly. Action as required.

NB

Confirm continuous blow down valve is

open and note setings

13. Combustion Fans

Confirm that the FD/ID & GR fans and associated

dampers are fully available and clear of alarms.

X Ref MS.06/26

for manual reset procedure


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14. Biomass – Spent Ground Grain

a) Confirm all conveying systems are fullyavailable and clear of alarms. .

b) Confirm fuel hopper level and storage silos issufficient to sustain boiler operation and/or

that dewatering plant is available.

15. Feed water and Condensate System

a) Check all alarms clear and system fullyavailable. Action as required.

b) Confirm that the condensate feed water tankset point has been set to 70%. (1450mm).

Action as required.

c) Check Deaereator set point is set to 70% andensure that the feed water storage tank level is

at its normal operating level (1450mm).

Action as required.

d) Check boiler drum level is at the normaloperating level 50% (NOL = 0 + /-50 mm).

Action as required.

.Refer MS. 06/17 for details on establishing

the drum water level

16. CECON Unit

Confirm that the CECON unit is fully available and

clear of alarms.

Refer to CECON start up procedure @

MS.06/20

17. ESP

Confirm that the ESP is fully available and clear of

alarms.

Refer to ESP start up procedure @

MS.06/19

18. CEMS equipment

Confirm that the CEMS equipment is fully

available and clear of alarms.

Confirm that sufficient CEMS calibration gas is

available.


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19. Steam System Valve State Check

The following valves must be confirmed as open:

a) Steam Drum Vent Isolation Valves (V031101,V011102) and (V031139, V031140)

b) Saturation Steam Pipe Vent(V031207, V031208)

c) Primary Super heater drain valves(V031212, V031213)

d) Secondary Super heater drain valves(V031224, V031225)

e) Main Steam Line valves(V031226, V031227)

f) Steam Turbine line vent valves(V031235, V031236)

Located on bottom of the steam drum,

Boiler House Level 20.5 meter level.

8th floor, 20.5 meter level, east side,

Valve 031212 – 8th floor, 20.5 meter level, east side,

behind largest pipe, on left hand side.


adjacent to sand hopper.


centre of largest pipe, bottom of pipe.


adjacent to sand hopper.


largest pipe, right of centre.

Valve 031227 - 8th floor, 20.5 meter level, east side,

largest pipe, right of centre.

Item f) – Valve 031235 – 8th floor, 20.5 meter level,

north side, left of chaff/dust hopper.

Valve 031236 – 8th floor, 20.5 meter level, north side,

left of chaff/dust hopper.


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20. Gas, Bio Gas & Burner Systems

Check all alarms clear and systems fully available.

Action as required

Reset alarms at burner local control panel

X Ref MS.06/23

for burner start up

Note

To reset non volatile burner alarms hold the

reset button on the LCP for 3 seconds

21. Boiler Startup Procedure

X Ref MS.06/21

for boiler start up from cold

X Ref MS.06/22for boiler start up from warm ( bed temp > 400°C)

Risk Assessments

Assessment Descript ion Assessment Reference Assessment Date

Boiler House Access Risk Assessment

SPECIALIST COMPETENCE REQUIRED

Individual & / or Company

Name

Requirement / Experience / Qualification etc.

Dalkia Cameronbridge Plant Operator Competency as detailed in MSP 04

PREPARED BY

Print Name Revision Date

J Callaghan A 03/03/2012

REVISION (Number & Date)

J Callaghan B 15/05/2012

Documents

MS 06 18 - BFB Boiler Pre-Start Checks _Rev B - 15 05 12_