VALERO – KROTZ SPRINGS
SHG #18
Page 1 of 4
Revised 8/29/96
FREEZE PROTECTION GUIDELINE
I.
PURPOSE
To prevent equipment damages and assure proper and continued operation during freezing
weather.
II.
SCOPE
This procedure applies to all equipment within the facility when freeze damage is expected.
III.
RESPONSIBILITIES
The Shift Supervisor will be responsible for the overall implementation of this procedure.
The Lead Technicians will be responsible for freeze protection in their area.
The Pumping Department will also perform and monitor protection in other areas such as roads
around the facilities and the office areas.
IV.
GUIDELINES
A.
Safety Showers and Eye Wash Stations
1.
2.
B.
Raw Water Lines
1.
2.
C.
Block in at header if feasible and drain the line.
If not feasible, start small flow through the end of the line.
Water Hoses
1.
2.
D.
Shower/Eye Wash Stations will be opened and allowed to run.
Monitor closely for slipping hazards in the area and remove ice as needed.
Where possible, blow with air to remove any water.
Where there is no source of air, disconnect the hose and drain.
Cooling Water System
1.
2.
3.
4.
5.
6.
Do not allow the cooling tower supply temperature to fall below 650 F.
Monitor the cooling tower fill and alternate the fans as necessary to prevent ice
accumulation.
Open the jump-over at the end of the cooling water header in pipe rack if
available.
Check the unit for cooling water exchangers that are not in service. If not in
service, drain or start cooling water flow through exchanger.
Start a small flow of cooling water through any dead end lines.
Check for any idle equipment such as lube oil coolers, seal flush coolers and
sample coolers, etc. and drain or put a water flow through.
VALERO – KROTZ SPRINGS
E.
Steam System
1.
2.
3.
4.
F.
4.
Check battery, fuel, oil and water for the emergency generator.
Start the emergency generator and run for 15 minutes every 4 hours.
Check for 00 F pour point on the diesel fuel and add pour point depressant as
instructed by supervision.
Check for proper operation of lube oil and cooling water heater.
Instruments
1.
2.
3.
4.
I.
Remove coiled hose from the rack and stretch along the ground.
Start a small amount of steam flow through the hose.
Emergency Generator
1.
2.
3.
H.
Ensure that all necessary steam tracing is in service.
Ensure that all steam traps are operating properly.
Ensure that all condensate lines are opened and have a flow.
Ensure that all steam drivers are drained or have a small flow.
Steam Lances/Hoses
1.
2.
G.
Ensure that any instrument, that has the possibility of freezing or plugging and
interrupting operation, is protected from the cold.
Some instruments may be placed in the manual mode.
Ensure that no instrument with glycol fill is blown down. Have I&E check glycol fill
if necessary.
Open all instrument air supply regulators and check for moisture.
Caustic Transfer Lines
1.
If an extended freeze (12 hours or more) is anticipated, flush all caustic transfer
lines with nitrogen.
a.
J.
SHG #18
Page 2 of 4
Revised 8/29/96
Between Units
i.
Crude to the FCCU
ii.
Isom Unit to the FCCU
iii.
FCCU to the Waste Water
iv.
Merox to the FCCU Utility
Heavy Oil Lines
1.
2.
3.
Displace uninsulated cat feed and other high paraffin oil lines with light oil.
Flush and inventory the FCCU Desalter with light oil if not in service.
Flush all unit slop oil lines with light oil.
VALERO – KROTZ SPRINGS
K.
Flare Lines
1.
FCC Unit
a.
b.
2.
Slightly open the bypass around the pilot pressure controller.
Start sweep gas to the flare line from the MTBE Unit.
Crude Unit
a.
L.
SHG #18
Page 3 of 4
Revised 8/29/96
Start small flow of sweep gas to the flare from the fuel gas knock out
drum.
Fire Water
1.
Fire Water Pumps
a.
2.
Fire Hydrants and Monitors
a.
b.
3.
Activate heat tracing on all fire water pumps and check for proper
insulation.
i.
Crude Jockey Pump
ii.
Electric Fire Water Pumps
iii.
Diesel Fire Water Pumps (Dock #1 and #4)
a.
Pumper Lead Technician is responsible for running the
engine for 30 minutes at the beginning of each shift.
b.
Complete the following inspections and record the time
and person inspecting.
 Water heater working (Engine)
 Oil heater working (Engine)
 Heat Strip on and insulated properly
 Water drained from exchanger
Dry Barrel
i.
Ensure that they are closed and properly drained.
Wet Hydrants/Monitors
i.
Open the fire water monitor bypass valve and allow the monitor to
flow.
ii.
Adjust the valve on monitors without bypass valves and allow
water to flow.
iii.
Direct water so it will not cause damage such as dike erosion, or
an ice hazard.
iv.
Remove protective cap on each 2 1/2" valve and allow to drain.
Hose Reels
a.
b.
Check the bleeder on the hard piping to the hose reels and drain.
Remove the hose from the reel and drain before rewinding on the reel.
VALERO – KROTZ SPRINGS
4.
Fire Truck and Foam Trailer
a.
b.
5.
Drain all pump lines.
Drain monitors and check for standing water.
Deluge System (FCCU/Crude)
a.
6.
Building lighting is used for heat and must be kept on.
Sprinkler System (Gasoline Rack)
6.
Sprinkler System (Gasoline Rack)
a.
b.
M.
Building lighting is used for heat and must be kept on.
Drain deluge line using 2" valve at rack.
Miscellaneous
1.
2.
3.
N.
SHG #18
Page 4 of 4
Revised 8/29/96
Check any in-use water drum or day tank and ensure continuous water flow.
Steam may be needed to maintain the proper operating temperature for lube oil
systems of large process equipment, (i.e., main air blowers, Hydrogen recycle
compressor).
The Unit Operators and Pumpers will be responsible for removal of any ice
buildup.
Return to Normal
1.
Area Inspection and Repairs
a.
As the weather permits, return all equipment to normal. Inspect
equipment and write work orders as required. Notify the Safety
Department of any problems with Safety equipment.