SIST EN 1034-7:2005+A1:2010

SIST EN 1034-7:2005+A1:2010 is the Slovenian adoption of EN 1034-7:2005+A1:2009 for machine safety in paper making and finishing. It specifies safety requirements for chests - vessels used to store, collect and mix pulp - and is meant to be used together with EN 1034-1. For designers, manufacturers, integrators and safety engineers, it shows which hazards to address and what protective measures and checks to apply in practice.

What does SIST EN 1034-7:2005+A1:2010 specify?

SIST EN 1034-7:2005+A1:2010 applies to chests used in paper making and covers the significant hazards, hazardous situations and hazard events that arise during intended use and use foreseen by the manufacturer. It is a product-specific safety standard for this machine family, so it supplements the common requirements in EN 1034-1.

The standard excludes tanks for chemicals, storage tanks for starch and other additives used in paper making, and basins or vessels for wastewater resulting from the process. It also excludes chests manufactured before the publication date of the standard.

The document is organized into scope, normative references, terms and definitions, significant hazards, safety requirements and/or measures, verification of safety requirements and/or measures, and information for use.

What are the key requirements of SIST EN 1034-7:2005+A1:2010?

SIST EN 1034-7:2005+A1:2010 sets out practical safety measures for guarding, access, control, maintenance and emergency response. The requirements in clause 5 are the core of the document, and clause 6 shows how each requirement is checked.

Guards, access and fall protection

Power transmission elements outside the chest shall be guarded by a fixed enclosure. This matters because drive-to-agitator transmission points can trap or crush hands and clothing.

Working platforms on open chests need fall-off protection, and the rail or equivalent protection at the chest must be at least 1,20 m high. Inspection holes must prevent people from falling into the chest and must not allow access to the agitator. In practice, this affects platform design, hole placement and the choice of covers or fixed inserts.

Mechanical, electrical and control-system safety

Inspection-hole covers that can be opened by hand shall be ergonomically designed and secured against unintended closing. Where stock can be ejected during mixing, the covers shall be interlocked with the drive for splash protection. Powered gate valves need protection against crushing at the valve discs, either by safety distances or fixed guards.

Electrical equipment shall meet the relevant machinery electrical and EMC requirements, and metal chests shall be earthed. Hydraulic and pneumatic equipment shall meet the applicable fluid power requirements. Level control devices shall prevent overflow automatically, and their control system shall meet at least category B of EN 954-1.

Maintenance, emergency and explosion safety

Maintenance and cleaning provisions include energy isolation, lockable shutoff devices or separable piping, and ventilation or removal of hazardous gases before chest access. Where access is required, manholes shall support safe access and ventilation, and the cover shall only be openable when the chest is empty. Frequent access adds an interlock requirement with the agitator drive.

An emergency stop device is required, with one stop point on the central control panel and at least one near the chest edge. If explosive atmospheres can form inside the chest, the measures in EN 1127-1 apply. For readers, this means the machine design must address safe stopping, safe entry and gas-related risks before anyone enters the chest.

What terms does SIST EN 1034-7:2005+A1:2010 define?

Chest - a vessel, usually made of special steel or concrete, fitted with a fixed agitator, measuring and control devices and shutoff devices for storing, collecting and mixing pulp.

Agitator - the mixing part, shaped as a propeller or agitating shaft, that helps distribute pulp components and form a suspension.

Pulp - a suspension of fibre, additives and inks used for producing paper and board.

C type standard - a machine-specific safety standard that takes precedence over A or B type standards for the hazards it covers.

Who uses SIST EN 1034-7:2005+A1:2010?

SIST EN 1034-7:2005+A1:2010 is used by machinery designers and builders for paper making and finishing equipment, especially when designing chests and their access, guarding and control systems. It is also used by safety specialists, plant engineers, installers and maintenance teams who need to assess risks, plan cleaning and entry procedures, and verify protective measures.

Buyers, quality managers and conformity assessment teams use it to check whether a chest design matches the expected safety approach for the paper industry. It is also relevant when preparing the instruction handbook for operators and maintenance personnel.

What changed in SIST EN 1034-7:2005+A1:2010 from the previous edition?

SIST EN 1034-7:2005+A1:2010 supersedes EN 1034-7:2005. It includes Amendment 1 approved by CEN on 17 November 2009.

Which standards are used with SIST EN 1034-7:2005+A1:2010?

SIST EN 1034-7:2005+A1:2010 is intended to be used together with EN 1034-1, which provides the common requirements for paper making and finishing machines. It also relies on EN ISO 12100-1 and EN ISO 12100-2 for general safety design principles and risk reduction.

Other key references contribute specific safety functions: EN 953 for guards, EN 294 and EN 349 for safety distances and minimum gaps, EN 418 and EN 954-1 for emergency stop and control-system categories, EN 982 and EN 983 for hydraulics and pneumatics, EN 1037 for prevention of unexpected start-up, EN 1127-1 for explosion protection, EN 13023 for noise measurement, EN 60204-1 for electrical equipment, EN 61000-6-2 for EMC immunity, and EN ISO 14122 for permanent means of access.

What does the SIST EN 1034-7:2005+A1:2010 document contain?

The document contains a hazard list in clause 4 that maps significant hazards to the relevant safety measures. Clause 5 sets out the detailed requirements for guards, platforms, inspection holes, electrical equipment, level control, maintenance access, emergency stop and explosion protection.

Clause 6 gives the verification methods used to check compliance, using visual inspection, functional tests, measurements, and checks against drawings and calculations. Clause 7 lists the information that must be included in the instruction handbook, including maintenance, draining, gas removal, emergency measures, handling of manhole covers, radioactive material where present, and noise information.