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A new inhibitive drilling fluid additive
Volume21/Number4/April 1990
STOCKDALE,E. C. 1987. Should freshwater wetlands be used for stormwater management?: a discussion of wetlands management in King County, Washington. M.M.A. Marine affairs, University of Washington.
JONES, D. F. 1988. Organizational process: the municipal response to a citizens proposal for Seattle's central waterfront. M.M.A. Marine affairs, University of Washington.
READ, P. L. 1988. Uptake and elimination of Vibrio LEE, C. O. 1988. Rate and modes of uptake of tritiumparahaemolyticus by the Pacific oyster Crassostreagigas labeled toluene in adult chinook salmon (Oncorhynchus Thunberg. M.S. Fisheries, University of Washington. tschawytscha). M.S. Fisheries, University of Washington. SARN|ANTO,P. 1988. Bacterial degradation of saxitoxin. M.S. Fisheries, University of Washington.
CLARKE, S. C. I988. Development and use of environmental standards and guidelines for fishery resources. M.S. Fisheries, University of Washington.
MADDUX,R. D. 1986. Estuarine mitigation banking: a chance for predictability. M.M.A. Marine affairs, University of Washington.
SAMPLE,T. E. 1988. Investigation of the potential influence of primary sewage effluent on the growth of Gonyaulax catenella. M.S. Fisheries, University of Washington.
COLLIER,T. R. 1988. Xenobiotic metabolizing enzymes in liver of flatfish from Puget Sound, Washington. Ph.D. Fisheries, University of Washington.
ERICKSON, G. M. 1988. The effect of Gonyaulax RASMUSSEN, A. N. 1987. Special area management planning: Port Angeles harbor resource management planning. M.M.A. Marine affairs, University of Washington.
catenella~toxins on chum and pink salmon smolts (Oncorhynchus keta and O. gobuscha, coho salmon fry (0. kisutch), and Pacific herring juveniles (Clupea harengus pallasi).
Tarball Skimmer
comb forming an integral part of a flame tube heated by oil or gas burners. This instantly liquefies the tar and the free-flowing liquid then falls into the receiving tank which is also fitted with enclosed flame tubes to keep the oil in liquid form. Alba International Ltd are now seeking support funding for the development work needed in order to build and test full-scale prototypes of the Gulf Hedgehog Skimmer for working trials in the Gulf.
Aberdeen pollution control experts, Alba International Ltd, have developed a new type of skimmer which will provide a solution to the tarballs and tarmats currently presenting a serious pollution problem in the Arabian Gulf. A prototype of the Gulf Hedgehog Skimmer, so named because of its distinctive appearance, has successfully completed trials in Aberdeen and an agreement has been reached with the French company EGMO to produce the first version of the skimmer as an add-on to their heavy oil recovery barge, Egmopol. The new skimmer will be interchangeable with the conventional belt skimmer, employing the same hydraulics and controls, which will be an advantage to many Gulf countries who already possess Egmopol barges. Until now, conventional oil skimmers have proved ineffective because the very sticky tarry substance left soon after crude oil is spilt in the warm seas rapidly clogs up any moving parts. Manual collection is highly laborious and collection by nets is expensive because they cannot be recovered for re-use. The basic design principle behind the new skimmer is simple but has proved to be very effective. An endless conveyor of open mesh construction with spikes at regular intervals is arranged to project down into the sea. The spikes then impale the tarballs or rip into the tarmats and lift them out of the water. As the loaded conveyor rises, the water falls out and the tar comes into contact with a
A New Inhibitive Drilling Fluid Additive With the increasing pressure from the Environmental lobby as a background, Hydra Fluids International have developed a patented water base drilling fluid additive, "H.F.100". The new additive is designed to give water based drilling muds inhibition characteristics similar to oil based drilling muds (OBM), yet satisfies the present toxicity requirements for an environmentally acceptable drilling fluid. H.F.100 is accepted by the authorities regulating cuttings disposal in the North Sea for disposal without restriction in the UK, Norwegian, and Dutch Sectors. H.F.100 uses a glycerine base system which when added 10-30% by volume to water base drilling fluids has been found to out-perform other water base muds, particularly when water-sensitive rock formations are encountered. The plans to restrict the discharge of OBM contaminated cuttings in the North Sea where water sensitive formations are common has created a demand for a water base system that could be a viable 211
Marine PollutionBulletin alternative. Hydra fluids claim that their formulation virtually eliminates clay and shale swelling, salt and anhydrite contamination, and hole wash out due to sloughing.
Oil Sorbent Incentive As part of a special promotion to Regional Water Authorities, 3M Environmental Safety is offering a free case of 3M Oil Sorbent with every five cases of 3M Oil Sorbent booms, pillows, sheets or rolls which are purchased before 1 April, 1990. Specifically designed to combat pollution within the UK's waterways, 3M Oil Sorbent is completely reusable and can remove up to 25 times its own weight in oil. Able to absorb most types of oil upon contact, 3M Oil Sorbent is a specially formulated fibrous material which repels water, making it ideal for the removal of hydrocarbon based pollutants from lakes and rivers or any water based mixture. In addition, after use, 3M Oil Sorbent can be incinerated, buried, dissolved in boiling oil or recycled.
Programmable DO Monitors Kent Industrial Measurements, an ABB Kent company, has launched a new microprocessor based dissolved oxygen transmitter which is available in both wall (model 4555) and panel (model 4565) mounting enclosures. The addition of this product increases the family which already includes conductivity and pH transmitters. The use of a microprocessor enables the instrument to be programmed by membrane switches to have a range anywhere between 0 to 199% saturation of 0 29.99 ppm within the confines of a minimum range of 20% saturation or 2.00 ppm. Another benefit of microprocessor technology is the simplified calibration procedure which is incorporated in these instruments. All that is required is for the sensor to be placed in a sulphide solution to obtain zero, whilst full scale calibration is achieved by either exposing the sensor to air or immersing in air saturated water. Depressing the Enter button on each occasion enables the instrument to detect a stable sensor output and thus perform a call-
Fusilier Fishes Fusilier fishes of the world. An annotated and illustrated catalogue of caesionid species known to date. FAO Species Catalogue. Vol. 8. Kent E. Carpenter. FAO Fish. Synop. (125), Vol. 8 : 7 5 p. 1988. ISBN 92-5-102746-3. The eighth volume in this excellent FAO series maintains the high standard set by the earlier volumes which covered shrimps, scombrids, cephalopods, sharks, bill212
bration. The instrument will also inform the user if the calibration was satisfactory. All information contained in the memory is secure since a user selectable code must be entered before anything can be altered. Each instrument has four set points and up to four relays which can be configured as desired, together with up to two fully isolated output signals, customer selectable to be 0-10, 0-20, or 4 - 2 0 mA. A unique feature is the ability to assign the relays and output signals in any combination to either input signal or both, providing complete flexibility. The instrument is designed to work with a new floating ball DO electrode in which the actual sensor is flush with the outer skin of the ball, alleviating previous problems of debris collecting in and around the sensor. The main applications for the new instrument are in effluent treatment and fish farming.
Watermasters Dredger The UK company Watermasters, based at Gravesend, Kent have developed a small multipurpose dredger for use on sites too confined for a conventional dredger. The advanced design of this dred-er~ makes it easy to install on site--it simply climbs into the water from its low loader by means of its excavator arm and stabilizers, keeping mobilization costs to a minimum. The dredger is able to work from the water as a floating excavator and has a hydraulic system using biodegradable oil making it as environmentally friendly as possible.
,Z
The Watermaster dredger has been used in tile restoration of Wardens Lake. now preservedas a wildlife haven as part of a major regeneration programme taking place at Frindsbury off the river Medwayin Kent.
fishes, snappers and clupeoids. Dr. Kent Carpenter has recently completed a worldwide revision of the Caesionidae (fusilier family of fishes) which was published in Indo-Pacific Fishes in 1987. He has based his FAO volume on his earlier work but modified the presentation as appropriate to a guide intended as an aid in fisheries and fisheries-related studies rather than as a taxonomic treatise. Fusiliers are primarily of importance in artisanal coral reef fisheries where they may form a significant
STOCKDALE,E. C. 1987. Should freshwater wetlands be used for stormwater management?: a discussion of wetlands management in King County, Washington. M.M.A. Marine affairs, University of Washington.
JONES, D. F. 1988. Organizational process: the municipal response to a citizens proposal for Seattle's central waterfront. M.M.A. Marine affairs, University of Washington.
READ, P. L. 1988. Uptake and elimination of Vibrio LEE, C. O. 1988. Rate and modes of uptake of tritiumparahaemolyticus by the Pacific oyster Crassostreagigas labeled toluene in adult chinook salmon (Oncorhynchus Thunberg. M.S. Fisheries, University of Washington. tschawytscha). M.S. Fisheries, University of Washington. SARN|ANTO,P. 1988. Bacterial degradation of saxitoxin. M.S. Fisheries, University of Washington.
CLARKE, S. C. I988. Development and use of environmental standards and guidelines for fishery resources. M.S. Fisheries, University of Washington.
MADDUX,R. D. 1986. Estuarine mitigation banking: a chance for predictability. M.M.A. Marine affairs, University of Washington.
SAMPLE,T. E. 1988. Investigation of the potential influence of primary sewage effluent on the growth of Gonyaulax catenella. M.S. Fisheries, University of Washington.
COLLIER,T. R. 1988. Xenobiotic metabolizing enzymes in liver of flatfish from Puget Sound, Washington. Ph.D. Fisheries, University of Washington.
ERICKSON, G. M. 1988. The effect of Gonyaulax RASMUSSEN, A. N. 1987. Special area management planning: Port Angeles harbor resource management planning. M.M.A. Marine affairs, University of Washington.
catenella~toxins on chum and pink salmon smolts (Oncorhynchus keta and O. gobuscha, coho salmon fry (0. kisutch), and Pacific herring juveniles (Clupea harengus pallasi).
Tarball Skimmer
comb forming an integral part of a flame tube heated by oil or gas burners. This instantly liquefies the tar and the free-flowing liquid then falls into the receiving tank which is also fitted with enclosed flame tubes to keep the oil in liquid form. Alba International Ltd are now seeking support funding for the development work needed in order to build and test full-scale prototypes of the Gulf Hedgehog Skimmer for working trials in the Gulf.
Aberdeen pollution control experts, Alba International Ltd, have developed a new type of skimmer which will provide a solution to the tarballs and tarmats currently presenting a serious pollution problem in the Arabian Gulf. A prototype of the Gulf Hedgehog Skimmer, so named because of its distinctive appearance, has successfully completed trials in Aberdeen and an agreement has been reached with the French company EGMO to produce the first version of the skimmer as an add-on to their heavy oil recovery barge, Egmopol. The new skimmer will be interchangeable with the conventional belt skimmer, employing the same hydraulics and controls, which will be an advantage to many Gulf countries who already possess Egmopol barges. Until now, conventional oil skimmers have proved ineffective because the very sticky tarry substance left soon after crude oil is spilt in the warm seas rapidly clogs up any moving parts. Manual collection is highly laborious and collection by nets is expensive because they cannot be recovered for re-use. The basic design principle behind the new skimmer is simple but has proved to be very effective. An endless conveyor of open mesh construction with spikes at regular intervals is arranged to project down into the sea. The spikes then impale the tarballs or rip into the tarmats and lift them out of the water. As the loaded conveyor rises, the water falls out and the tar comes into contact with a
A New Inhibitive Drilling Fluid Additive With the increasing pressure from the Environmental lobby as a background, Hydra Fluids International have developed a patented water base drilling fluid additive, "H.F.100". The new additive is designed to give water based drilling muds inhibition characteristics similar to oil based drilling muds (OBM), yet satisfies the present toxicity requirements for an environmentally acceptable drilling fluid. H.F.100 is accepted by the authorities regulating cuttings disposal in the North Sea for disposal without restriction in the UK, Norwegian, and Dutch Sectors. H.F.100 uses a glycerine base system which when added 10-30% by volume to water base drilling fluids has been found to out-perform other water base muds, particularly when water-sensitive rock formations are encountered. The plans to restrict the discharge of OBM contaminated cuttings in the North Sea where water sensitive formations are common has created a demand for a water base system that could be a viable 211
Marine PollutionBulletin alternative. Hydra fluids claim that their formulation virtually eliminates clay and shale swelling, salt and anhydrite contamination, and hole wash out due to sloughing.
Oil Sorbent Incentive As part of a special promotion to Regional Water Authorities, 3M Environmental Safety is offering a free case of 3M Oil Sorbent with every five cases of 3M Oil Sorbent booms, pillows, sheets or rolls which are purchased before 1 April, 1990. Specifically designed to combat pollution within the UK's waterways, 3M Oil Sorbent is completely reusable and can remove up to 25 times its own weight in oil. Able to absorb most types of oil upon contact, 3M Oil Sorbent is a specially formulated fibrous material which repels water, making it ideal for the removal of hydrocarbon based pollutants from lakes and rivers or any water based mixture. In addition, after use, 3M Oil Sorbent can be incinerated, buried, dissolved in boiling oil or recycled.
Programmable DO Monitors Kent Industrial Measurements, an ABB Kent company, has launched a new microprocessor based dissolved oxygen transmitter which is available in both wall (model 4555) and panel (model 4565) mounting enclosures. The addition of this product increases the family which already includes conductivity and pH transmitters. The use of a microprocessor enables the instrument to be programmed by membrane switches to have a range anywhere between 0 to 199% saturation of 0 29.99 ppm within the confines of a minimum range of 20% saturation or 2.00 ppm. Another benefit of microprocessor technology is the simplified calibration procedure which is incorporated in these instruments. All that is required is for the sensor to be placed in a sulphide solution to obtain zero, whilst full scale calibration is achieved by either exposing the sensor to air or immersing in air saturated water. Depressing the Enter button on each occasion enables the instrument to detect a stable sensor output and thus perform a call-
Fusilier Fishes Fusilier fishes of the world. An annotated and illustrated catalogue of caesionid species known to date. FAO Species Catalogue. Vol. 8. Kent E. Carpenter. FAO Fish. Synop. (125), Vol. 8 : 7 5 p. 1988. ISBN 92-5-102746-3. The eighth volume in this excellent FAO series maintains the high standard set by the earlier volumes which covered shrimps, scombrids, cephalopods, sharks, bill212
bration. The instrument will also inform the user if the calibration was satisfactory. All information contained in the memory is secure since a user selectable code must be entered before anything can be altered. Each instrument has four set points and up to four relays which can be configured as desired, together with up to two fully isolated output signals, customer selectable to be 0-10, 0-20, or 4 - 2 0 mA. A unique feature is the ability to assign the relays and output signals in any combination to either input signal or both, providing complete flexibility. The instrument is designed to work with a new floating ball DO electrode in which the actual sensor is flush with the outer skin of the ball, alleviating previous problems of debris collecting in and around the sensor. The main applications for the new instrument are in effluent treatment and fish farming.
Watermasters Dredger The UK company Watermasters, based at Gravesend, Kent have developed a small multipurpose dredger for use on sites too confined for a conventional dredger. The advanced design of this dred-er~ makes it easy to install on site--it simply climbs into the water from its low loader by means of its excavator arm and stabilizers, keeping mobilization costs to a minimum. The dredger is able to work from the water as a floating excavator and has a hydraulic system using biodegradable oil making it as environmentally friendly as possible.
,Z
The Watermaster dredger has been used in tile restoration of Wardens Lake. now preservedas a wildlife haven as part of a major regeneration programme taking place at Frindsbury off the river Medwayin Kent.
fishes, snappers and clupeoids. Dr. Kent Carpenter has recently completed a worldwide revision of the Caesionidae (fusilier family of fishes) which was published in Indo-Pacific Fishes in 1987. He has based his FAO volume on his earlier work but modified the presentation as appropriate to a guide intended as an aid in fisheries and fisheries-related studies rather than as a taxonomic treatise. Fusiliers are primarily of importance in artisanal coral reef fisheries where they may form a significant