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​Refinery tight lipped following burn-off concerns

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VALERO has refused to explain why their flare stacks at the Pembroke Oil Refinery were worryingly large on Friday night (Nov 16).

The Pembrokeshire Herald received several messages and photographs of the unprecedented burn-off from readers and concerned locals via social media and email.

An unconfirmed source at the refinery told this newspaper that there had been a problem with the alkylation de-isobutanizer – it ‘fell over’ our source said.

Alkylation is the process of producing gasoline range material such as propylene and butylene with isobutene – in the presence of a highly acidic catalyst, either sulphuric acid or hydrofluoric acid.

When asked to confirm the emergency burn off took place, and when asked if there was a serious malfunction, Stephen Thornton, Public Affairs Manager told us: “It is company policy not to comment on operations.”

When asked if he could deny that the incident occurred he again declined to comment.

A refinery expert told us: “The towers which have a constant burning flame is called a flare stack. In very simple terms, it is just like the burner of a gas stove with a controlled burning of natural gas through its pilot burners. It is the last line of safety or defence for refineries, petrochemical and gas processing plants.”

The expert went on: “The flare system consists of the flare stack and a flare header. A very large network of pipes coming from the different processes feed into the header. Whenever there is an upset or an emergency situation, all the extremely flammable hydrocarbons need to be vented out.

“But these cannot be just put in the atmosphere like the steam from our food pressure cookers. A vapour cloud would be extremely hazardous and catastrophic. To ensure that these escaping gases get burned to Carbon dioxide and water vapour, a flame is always kept burning on the top.

“Refinery operators generally see this as a necessary evil.

“The location of a fire stack is also very important. It is located far away from the main processing complex in the downwind direction.”

In April this newspaper reported that a potentially ‘catastrophic incident’ took place at Valero’s Pembroke Oil Refinery last year involving leaking gas and an ignition source

As previously reported, we were contacted earlier this year by a number of workers at the site who told us that it is only ’pure luck’ which prevented leaking gases from being blown into an ignition source, believed to be a furnace, which could have led to another lethal incident at the plant.

Valero have confirmed that they are working with statutory authorities who are investigating the event, which occurred on November 30 last year. It involved the Alkylate Iso-Stripper, which creates Alkylate – a premium component of petrol that has exceptional anti-knock properties and is clean burning.

The oil refinery’s management told us at the time that it is working with ‘continued co-operation’ with regulators, and highlighted in a statement that ‘no personnel were injured’ and that ‘there was no impact on the community’.
Valero, which says it is one of the leading employers in south Wales, added that they are unable to comment further during the period of investigation.

A Health & Safety Executive spokesperson told The Herald in a prepared statement: “We are aware of an incident at the Valero Energy Limited Pembroke Refinery in November 2017 which was reported to the Health and Safety Executive under RIDDOR (Reporting of Injuries, Diseases and Dangerous Occurrences Regulations 2013).
“We can confirm that the incident took place on the Alkylate Iso-Stripper, and is being investigated.
“No enforcement action has been taken, though the investigation remains on-going.”

Community

Candlelit carol service brings community together in Milford Haven

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ST KATHARINE and St Peter’s Church in Milford Haven hosted its annual Candlelit Festival of Nine Lessons and Carols, bringing together members of the community for a traditional celebration of Christmas.

The service featured readings from the Mayor of Milford Haven, representatives of the Soroptimists, Milford Haven Amateur Operatic Society, the Headteacher and Head Prefects of Milford Haven School, Milford Haven Town Band, and NCI Wooltack Point.

Music for the evening was provided by organist Seimon Morris, Milford Haven Town Band and the Milford Haven Cluster Band, whose performances added to the atmosphere of the candlelit service.

The Friends of St Katharine and St Peter’s Church thanked all those involved and wished the community a happy Christmas.

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Crime

Man jailed after strangling partner and attacking police officer

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A MILFORD HAVEN man who strangled his partner during a violent domestic assault before attacking a police officer has been jailed for two years.

Timothy John, aged 38, of Howarth Close, Milford Haven, appeared at Swansea Crown Court after admitting a series of offences arising from an incident in October.

The court heard that John had been arguing with his partner about his drug use when the situation escalated into violence. Prosecutor Craig Jones said the defendant grabbed the woman by the throat and held her in a chokehold for around ten seconds, leaving her struggling to breathe and fearing she would lose consciousness.

During the attack, John also punched and kicked the victim before smashing a glass bong over her head. At the time, the woman was still in her underwear and managed to flee the property and run into the street to seek help.

John also damaged the victim’s mobile phone by biting the screen, rendering it unusable.

Police attended the address the following day to take a statement from the victim and discovered John hiding in a bedroom. When officers attempted to detain him, he assaulted a female police officer, knocking her glasses to the floor, before escaping from the property.

The defendant handed himself in around 24 hours later.

John pleaded guilty to intentional strangulation, assault occasioning actual bodily harm, assaulting an emergency worker, criminal damage, and escaping from lawful custody. The court was told he has five previous convictions for six offences, although none for violence.

Defending, Dan Griffiths said John accepted the relationship was over and had been using cocaine at the time of the incident, which had made him paranoid, volatile and unpredictable.

He told the court that John had previously worked as a fisherman, roofer and welder, but had struggled with alcohol and substance misuse. Mr Griffiths added that a pre-sentence report highlighted a difficult upbringing and noted a lack of insight into his offending, with concerns that he attempted to minimise his behaviour.

The defence urged the court to consider a suspended sentence to allow John to work with probation services.

Sentencing, Judge Catherine Richards said the offence involved serious strangulation and a sustained assault on an intimate partner, leaving the victim frightened in her own home.

John was sentenced to two years’ imprisonment and made subject to a ten-year restraining order preventing any contact with his former partner.

Dyfed-Powys Police have been asked to provide a custody image of the defendant.

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News

Angle RNLI assist fishing vessel off Pembroke Dock after fuel problem

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Lifeboat places stricken boat in tow and escorts it safely into East Llanion

ANGLE RNLI lifeboat crew were called out on Tuesday (Dec 16) to assist a fishing vessel experiencing fuel problems off Llanion, near Pembroke Dock.

The volunteer crew were tasked at 3.53pm after reports that a ten-metre fishing vessel, with one person on board, had suffered a fuel issue while close to shore. With the boat at risk of drifting into another vessel, the lifeboat was requested to provide assistance.

The Angle lifeboat launched promptly and arrived on scene around 20 minutes later. After carrying out an assessment, the crew placed the fishing vessel in an alongside tow.

The vessel was then taken the short distance into East Llanion, where it was berthed safely alongside the wall.

Once the situation was resolved and no further assistance was required, the lifeboat crew were stood down and returned to their station. The lifeboat was cleaned, checked and made ready for service again by 5.15pm.

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