|
| |
4-15 Commissioning - Cont'd .
WARNING
INTERNAL DIRT AND WASTE
Dirt, rocks, construction waste, etc. can ruin operating equipment and cause operating
failures. Operating management must assure themselves of the elimination of such
contaminants before commencing operations.
4-15.7 It is recommended that purging and initial line-fill operations take place at relatively low flow rates and pressures.
Flow rates should be restricted to a range of 50-150 gpm. Pressures should not exceed that required to attain these flow
rates.
CAUTION
LOW FLOW IN PURGING
Restrict flow rates to 150 gpm maximum during purging and line fill operations. High and
turbulent rates will mix air with the fuel and extend the purging procedure.
4-15.8 The purge and initial line fill must be conducted with the fuel intended for storage and distribution from that
particular fuel unit. If the TPT's designated service is for more than one fuel, it is recommended that only one fuel unit
be purged and filled at one time to avoid mistakes and the resultant contamination in this first operation of the facility. If,
4-15 however, it is urgent to get the entire TPT into operation, all three fuel units can be purged and the lines filled
simultaneously due to the dedicated nature of the switching manifold headers. Special care must be taken to avoid
errors that cause cross contamination.
4-15.9 The following procedures relate to one fuel unit. For clarity, the reference is made to the jet fuel unit. All valve
and equipment designations are related to the jet fuel unit. The purge and line fill of the other fuel units will be the same
except that the service designation of the equipment and valve numbers change from J to M or D. For example, the
opening of valve V33J in this description becomes the opening of V33M in the mogas fuel unit and V33D in the diesel
fuel unit. All the procedures refer to the P&ID Flow Diagram, Fig. 4-1. Although this is written as a continuous process, it
may be shut down at any point by stopping the pumps and closing the valves.
a.
Make ready a source of fuel and fuel pressure to the switching manifold, either through the tanker-truck receipt
manifold or from the associated pipeline. The following procedures assume the supply is from tanker-trucks via the
tanker-truck receipt manifold. Minor and obvious modifications are required if the source is from the associated pipeline.
b.
After connecting to tanker-truck with the connector followed by valve V1TJ, open V1TJ, V5TJ, V7TJ, V8TJ,
V9TJ, VIOTJ, V13TJ.
c.
Block in the line from the associated pipeline with the first valve upstream on the header or disconnect and blind
off the switching manifold with an aluminum plug.
d.
Purge and fill supply hoselines to the contaminated fuel module:
4-28
|
