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Safety and environmental standards for fuel storage sites
Final report
53
Existing Pipe Penetrations
Design Arrangement sketch Fire and product
resistant sealants
Acceptable
standards
Required
upgrade
Straight-
through Type
Arrangement
Straight
through
No existing sealant
Acceptable for
existing plant but
operator to assess
requirement for
fire and product
resistant sealant
Consider installing
fire and product
resistant sealants
For pipelines which
indicate substantial
horizontal
movement,
upgrade option to
install cover plates
with sealants to
retain joint integrity
Sleeved
Arrangement
Sleeved
penetration
Existing sealant
not fire or product
resistant
Upgrade required
with inspection
and maintenance
regime
Install fire and
product resistant
sealants and install
fire protection steel
cover plates (see
paragraph 206)
Pipe penetrations: anchoring
207 Puddle flange arrangements act as anchor points and are inherently fire and product
resistant. The sleeved arrangement does not act as an anchor and the sealant accommodates
minor vertical and horizontal movements.
208 The straight-through type arrangement, although offering pipeline restraint in the vertical
direction, allows horizontal movement and is therefore difficult to seal. If the extent of movement
is such that sealants do not retain the joints’ integrity, then an upgrade solution to install cover
plates should be considered.
Bund wall expansion and construction joints
209 Bund wall expansion joints are important to ensure ongoing bund structural integrity. In
addition they need to provide a liquid tight, fireproof joint.
210 New joints should be installed with metal waterstops and fireproof joints. Waterstops
fabricated from stainless steel or copper are in use at terminals and the choice of metal is
informed by performance requirements.
211 Where practicable, existing joints should be upgraded to provide waterstops and/or fireproof
joints. There are realistic methods available – however it is recognised that retrofitting waterstops
to existing bund wall joints is not a simple task and it may degrade the joint integrity.
212 The following lists a range of possible existing bund wall joint arrangements and reviews
product resistance, fire resistance and upgrade options for each arrangement.
a A joint with a stainless steel waterstop and fire- and product-resistant sealants – This
meets current good practice and no upgrade would be required. It is unlikely to have a
significant rate of liquid egress from the joint during an incident, with or without fire.