Cradle to Grave reduction achieved. Foam Assurance Especially with - PDF document

23/10/2017 The dilemma! Risk based Fire Hazard Management is always a balance between cost and risk Cradle to Grave reduction achieved. Foam Assurance Especially with tank fires – not normally a The LASTFIRE Process life safety issue! Increasing environmental issues Dr. Niall Ramsden Risk factors: ENRg Consultants • Environmental issues • LASTFIRE Project Coordinator Asset loss • Business Interruption niall.ramsden@lastfire.org • Public Image Both have an Always a balance! environmental Certainly a consequence lot of And other consequences of course! concern! Fire response effects Let it burn including water/product run off But now even more important!! LASTFIRE Position Paper The LASTFIRE response Foam concentrate usage and options Subjects Response strategies What are we doing? Developing interim best practice Position Paper Controlled burn down Assurance procedures Reviewing alternatives Systems Assessing new foams Monitor application www.lastfire.org.uk 1

23/10/2017 LASTFIRE Position Paper LASTFIRE Position Paper Foam concentrate usage and options Foam concentrate usage and options Subjects Subjects Response strategies Response strategies Standards/Approvals Standards/Approvals Foam concentrate performance test Foam concentrate performance test Foam Types and Properties Environmental constraints/Legislation Environmental Data Water Treatment/Separators Effects The ideal fire test! Foam Concentrate Developments Testing Systems/Equipment Training Changing Foam Concentrate The LASTFIRE Test Public Concerns Preplanning for Foam Usage Contaminated Firewater Treatment Tends to be expensive! www.lastfire.org.uk www.lastfire.org.uk Reference Sources LASTFIRE Position Paper LASTFIRE Assurance Process Commitments Site Specific Assurance Ongoing monitoring Optimise use and application Additions to typical procurement specification Get the balance right Waste water treatment effect “Cradle to Grave” approach Research Control and assurance Containment Control System Assurance Training Disposal www.lastfire.org.uk www.lastfire.org.uk LASTFIRE Process Element 1 - Assessment of Needs Foam Assurance Protocol Ten elements to address different areas Has a formal site wide evaluation of potential Key and sub questions scenarios been carried out in order to determine Extensive practical guidance the quantity of foam concentrate required to Member feedback/buy in manage the incidents to the selected strategy? Red, Amber, Green ranking Self audit or Third Party Not just applicable to tanks www.lastfire.org.uk www.lastfire.org.uk 2

23/10/2017 Element 1 - Assessment of Needs Element 1 - Assessment of Needs Multi-tank Fires www.lastfire.org.uk www.lastfire.org.uk Element 2 - Foam Concentrate Element 1 - Assessment of Needs Procurement Specification & Procedures Sub Questions 1 – Some Examples 1.1 Has a specific list of foam related tank fire scenarios and the accepted strategy to handle them been developed? Has there been a detailed “fit for purpose” 1.2 Did the development of the list have input from Process Foam Concentrate Procurement Specification Operators, Maintenance, Internal Responders, relevant External Responders and Regulatory Authorities, with all team developed? members confirming their acceptance of the outcome? 1.3 Is there a Scenario Worksheet quantifying the amounts of foam The most critical section!!! concentrate and associated equipment/systems required for each scenario. 1.4 Are all foam application rates and concentrate quantity calculations in accordance with a recognised standard and/or certified test results relevant to the specific fuels on site? www.lastfire.org.uk www.lastfire.org.uk Element 2 - Foam Concentrate Foam Procurement Specification & Procedures The most important tool for Fire performance controlling large flammable liquid fires! www.lastfire.org.uk 3

23/10/2017 Foam Fire Test For Yet often no detailed Storage Tank Fires PERFORMANCE SPECIFICATION prepared when purchases made! LASTFIRE Test Protocol • Test procedure developed designed to simulate considerations for tank Research Work incidents • Initially developed by MRDC – taken over by LASTFIRE LASTFIRE Test Protocol • Forceful foam impact • Semi-aspirating and aspirating nozzles designed such that they produce foam • Hot tank walls properties typical of commercially available monitors • Distorted tank shells • Foam thrown directly on to fuel surface • Two protocols – water miscible fuels and non water-miscible • Semi-aspirating application rate: 3.74 lpm/m 2 • Three nozzles used to evaluate performance on the basis of foam/foam- • Aspirating application rate: 3.63 lpm/m 2 making equipment combinations • System nozzle used overhanging tank rim • Semi-aspirating • Simulates foam from a foam pourer • Aspirating • System nozzle application rate: 2.5 lpm/m 2 • System • Medium expansion nozzle also added for latest tests www.lastfire.org.uk www.lastfire.org.uk Element 2 - Foam Concentrate Procurement Specification & Test Sequence 0 Procedures Preburn 3 Fire performance Extinguishment Environmental effects data 10 Wastewater treatment effects 12 - Torch Pass 1 Materials compatibility/Corrosion Data Vapour Seal Shelf Life/Accelerated ageing 23 - Torch Pass 2 Physical Properties – Tolerances/Acceptable drift 25 - Burnback Pot (removal @ 26) Burnback 30 - END www.lastfire.org.uk 4

23/10/2017 Element 2 - Foam Concentrate Element 2 - Foam Concentrate Procurement Specification & Procurement Specification & Procedures Procedures Fire performance Legislative Regimes Environmental effects data Occupational Health issues Wastewater treatment effects Premix issues Materials compatibility/Corrosion Data Chemical Footprint Shelf Life/Accelerated ageing Labelling/Containers Physical Properties – Tolerances/Acceptable drift Batch Testing Maximum/Minimum Temperatures Long term availability Compatibility with proportioners/pumps Guarantees Compatibility with other agents Retained samples Documentation www.lastfire.org.uk www.lastfire.org.uk Element 3 - Site Foam Storage and Element 2 - Foam Concentrate Stock Management Procurement Specification & Procedures Are foam stocks on site managed in such a way to ensure adequate supplies, optimise shelf life Sub Questions 2 – Some Examples and minimise risk of degradation or loss of 2.1 Is the foam concentrate type suitable for all fuels on site, including any water soluble flammable liquids? containment? 2.2 Is the nominal proportioning rate (percentage) appropriate for the fuels and proportioning equipment on site? • Minimum stock level 2.3 Is there a requirement for all foam concentrate on site to have • Rotation been batch tested to an appropriate fire performance standard • Storage containers (LASTFIRE fire test is the most appropriate for tank fires)? • Basic rules 2.4 Has sufficient Environmental/Toxicity data been provided to carry out a full environmental impact assessment of using the concentrate in major incidents? www.lastfire.org.uk www.lastfire.org.uk Element 4 - Site Foam Concentrate Element 3 - Site Foam Storage and Assurance Stock Management Is a system in place to test and assess the ongoing condition of the foam concentrate on a Sub Questions 3 – Some Examples regular basis? 3.1 Has a minimum stock level for foam concentrate on site been set to trigger new purchases with sufficient lead time to ensure sufficient for worst case scenario remains available? 3.2 Is foam stock rotated so that the oldest is used for regular testing and training? 3.3 Is there a procedure in place to enable 100% replacement of % Sediment stock used in the event of an incident within 24 hours – or is Viscosity there 100% back up stock held on site? Refractive Index 3.4 Are bulk foam concentrate storage vessels filled to an Specific Gravity expansion dome or alternatively a compatible sealer oil is used Film formation on the concentrate surface? pH www.lastfire.org.uk www.lastfire.org.uk 5

23/10/2017 Element 5 - System specification and Element 6 – Testing of Foam Application Equipment and Systems design Have all foam systems and mobile applications Are foam systems and other foam application been specified and designed in accordance with equipment tested on a regular basis to provide appropriate standards and are they operable sufficient assurance that they continue to meet during an emergency? their original performance criteria? www.lastfire.org.uk www.lastfire.org.uk Element 6 – Testing of Foam Total scenario testing Application Equipment and Systems www.lastfire.org.uk www.lastfire.org.uk Element 7 – Environmental Fire- Element 7 – Environmental Fire- Fighting Foam Management Assurance Fighting Foam Management Assurance Has a detailed environmental risk assessment has been performed related to foam storage and usage with appropriate measures being put in place to ensure environmental risk from using foam is minimised whilst maintaining effective fire response? Source Pathway Receptor analysis www.lastfire.org.uk www.lastfire.org.uk 6