EUROPEAN STANDARDNORME EUROPEENNEEUROPAISCHE NORM

ICS 27.080; 27.200

EN 378-3

January 2000

English version

Refrigerating systems and heat pumps - Safety andenvironmental requirements - Part 3: Installation site and

personal protection

Syslemes de refrigeration et pompes a chaleur - Exigencesde securite et d'environnement - Partie 3: Installation in situ

et protection des personnes

This European Standard was approved by CEN on 10 october 1S99.

Kalteanlaqen und Wiirmepumpen - Sicherheitstechnischeund umweltrelevante Anforderungen - Teil 3:

Aufste!lungsort und Schutz von Personen

CEN members are bound to comply with the CEN/CENELEC tntsrnal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard wilhoul any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretarial or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretarial has the same status as the officialversions.

CEN members are the naticnal standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg. Netherlands, Norway. Portugal, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDlZA,TlONCOMITE EUROPEEN DE NORMALISATIONEUROPAISCHES KOMITEE FUR NOR~IUNG

Central Secretariat: rue de Stassart, 36 8-1050 Brussels

2000 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.

Ref. No. EN 378-3:2000 E

Page 2EN 378-3:2000

ContentsPage

Foreword. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Introduction 31 Scope . '.' . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Normative references 4

. 3 Definitions 44 General requirements 45 Design and construction of special machinery rooms 46 Eiectrical Installation 87 Detectors and alarms 98 Heat sources and temporary high temperatures 109 Personal protective equipment 10Annex A (informative) Thorough examination and tests of respiratory

protective devices 14Annex B (informative) First aid when refrigerants other than R-717

are used - Immediate actions 15Annex C (informative) First aid when refrigerant R-717 (Ammonia)

is used- Immediate actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 16Annex D (informative) Bibliography 17Annex ZA (informative) Clauses of this European Standard addressing

essential requirements or other provisions of EU Directives 18

Foreword

This European Standard has been prepared by Technical Committee CENfTC 182 "Refrigerating systems, safetyand environmental requirements", the secretariat of which is held by DIN.

This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by July 2000, and conflicting national standards shall be withdrawn at the latest by July2000.

This European Standard has been prepared under a mandate given to CEN by the European Commission and theEuropean Free Trade Association, and supports essential requirements of EU Directive(s).

For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this standard.

According to the CENICENELEC Intemal RegUlations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Nethertands, Norway, Portugal, Spain, Sweden,Switzertand and the United Kingdom.

NOTE 1: It should be noted that this standard at the time of publication does not satisfy all essential safetyrequirements of the Directive 97i23!EC.

NOTE 2: This European Standard had also been proposed for inclusion in the mandate under the EUDirective 89/3921EEC (Machinery Directive). As the mandate has been given after the Standard had beenaccepted by the Technical Committee for submission to formal vote and in order not to further delay itspublication, it will be reviewed within the context of the latest version of the Machinery Directive directly afterthe publication.

This EN 378-3 is part of a standard consisting of a series of the following parts:

Part 1 Basic requirements, definitions, classification and selection criteria

Part 2 Design, construction, testing, marking and documentation

Part 3 Installation site and personal protection

Part 4 Operation, maintenance, repair and recovery

oPage 3EN 378-3:2000

For the 6-month enquiry, the draft standard was issued in 13 parts. After the discussion of the comments receivedduring the enquiry it was decided to rearrange the content of J2 parts and to publish the final standard in the above4paris. Therernaininq part 13 will be published as a separate standard.

The annexes A, B, C, D and ZA of this European Standard are informative.

Introduction

The introduction of EN 378-1 is applicable.

1 Scope

1.1 The scope of EN 378-1 is applicable.

1.2 This Part 3 of the European Standard is applicable to the installation site (design of plant space and services)and personal protective equipment.

1.3 This Part 3 is not applicable to unit systems and self-contained systems which operate wifh charges ofrefrigerant up to

2,5 kg of group L1 refrigerant,1,5 kg of group L2 refrigerant, and1,0 kg of group L3 refrigerant.

1.4 Certain clauses and subclauses of this Part 3 are not applicable to systems buill on site with charges ofrefrigerant up to

2,5 kg of group L1 refrigerant.1,5 kg of group L2 refrigerant,. and1,0 kg of group L3 refrigerant.

These clauses are:

clause 5 and 6.1.2.

~) 1.5 Certain clauses and subclauses of this Part 3 are not applicable to unit systems and self-contained systemswhich operate with charges of refrigerant up to

10,0 kg of group L1 refrigerant, and2,5 kg of group L2 refrigerant.

These clauses are:

clause 5;6.1.2; 6.2.3; 6.2-4;clause 7.

1.6 For refrigerating systems with a refrigerant charge of up to 10,0 kg of group L1 and up to 2,5 kg of group L2and L3, clause 9 is ani}' applicable to personnel doing maintenance, repair and recovery.

Page 4EN 378-3:2000

2 Normative references

This European Standard incorporates, by dated or undated reference, provisions from other publications. Thesenomnative references are cited at the appropriate places in the text and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references, the latest edition of thepublication referred to applies.

EN 378-1Refrigerating systems and heat pumps - Safety and environmental requirements - Part 1: Basic requirements,definitions, classification and selection criteria

EN 378-2Refrigerating systems and heat pumps - Safety and environmental requirements - Part 2: Design, construction,testing, marking and documentation

3 Definitions

For the purposes of this European Standard the definitions given in EN 378-1 apply.

:~) 4 General requirements4.1 Installation in relation to occupancies

When installing the system the refrigerant and type of system shall not differ from that selected in EN 378-1 havingdue regard to the occupancy relevant to the premises for which the refrigerant is utilized so that persons are notendangered.

4.2 Special machinery rooms

Special machinery rooms shall be installed as specified for their design and construction in clause 5.

4.3 Fire extinguishing components

Fire extinguishers shall be in accordance with the requirements of the local fire authorities. The extinguishing fluidshall be selected carefully, since dangerous chemical reactions may occur between certain extinguishing fluids andcertain referigerants. .

(~)4.4 Installation of piping, valves and their components

The installation of piping, valves and their components shall be as specified in EN 378-2.

4.5 Refrigerating equipment in the open air

Refrigerating equipment installed in the open air shall be suitable for outside installation. This equipment shall notbe accessible to unauthorized persons. " refrigerating equipment is located on a roof, care shall be taken that norefrigerant leaking from this equipment can enter the building or otherwise endanger people.

5 Design and construction of special machinery rooms

5.1 General

In some cases special machinery rooms shall be provided for accommodating parts of refrigerating systems,especially those of the high pressure side, and the compressors, for reasons of safety.

NOTE: Housings kept tight and vented can also serve as special machinery rooms.

Page 5EN 378-3:2000

The following principles apply to special machinery rooms:

a) special machinery rooms shall serve for accommodating refrigerating equipment but need not serve exclusivelyfor this equipment;

b) refrigerant gas escaping from special machinery rooms shall be prevented from entering neighbouring rooms.staircases. courts. gangways or building draining systems and the escaping gas shall be vented without risk;

c) it shall be possible to leave the special machinery room immediately in case of danger;

d) the air supply for combustion engines. boilers or air compressors shall be drawn from a place. where there isno refrigerant gas. If such equipment is installed in a special machinery room. the air shall be supplied fromoutside the room;

e) there shall be no open flame-producing equipment pemnanenlly installed and operated. Flammable materials.other than refrigerants. shall not be stored in the special machinery room;

f) a remote switch for stopping the refrigerating system shall be provided outside and near the special machineryroom door;

g) natural or mechanical ventilation shall be provided. Mechanical ventilation shall be provided with independentemergency control located outside the machinery room and near the machinery room door;

h) exterior openings shall not be under emergency exit staircases;

i) all piping and dueling passing through walls. ceilings and floors of special machinery rooms shall be tightlysealed;

j) portable fire extinguishers shall be provided in each special machinery room in an adequate number appro-priate to the size and type of the system and the type of refrigerant. heat-transfer medium and insulation. Forsystems using flammable refrigerants lire extinguishers shall also be provided in the proximity of the entries ofcold rooms and to working spaces in which refrigerating equipment is located.

5.2 Warning notice

Special machinery rooms shall be clearly marked as such on the entries together with waming notices thatunauthorized persons shall not enter and thai smoking. naked lights or flames are prohibited. Additionally. warningnotices shall be displayed prohibiting unauthorized operation of the system,

5.3 Dimensions and accessibility

The dimensions of the special machinery room shall allow the installation of equipment in favourable conditions.leaving sufficient room for service. maintenance, operation and disassembly. If a housing serves as a specialmachinery room. the access for service and maintenance can be achieved by dismantling parts of the housing orby special doors.

If necessary. catwalks and fixed ladders shall be provided for the erection. operation, maintenance and inspectionof the system in order to avoid standing or walking on piping. fittings, their supports and supporting stnuctures andon components.

There shall be clear headroom of at least 2 m below equipment situated over gangways and pemnanent work places.

Page 6EN 378-3:2000

5.4 Doors and walls

5.4.1 Doors and openings

Special machinery rooms shall have doors opening outwards and adequate in number to ensure freedom forpersons to escape in an emergency.

The doors shall be so designed that they can be opened from inside (anti-panic system).The doors shall be self-closinq if they provide access into the building.

The doors shall have at least a 30 min fire resistive construction.

There shall be no openings that permit unintended passage of escaping refrigerant. vapours, odours and all othergases to other parts of the building.

5.4.2 Inner walls

All partitions (horizontal or vertical) between the special machinery room and the inside of the building shall have atleast a 1 h fire resistive construction and be tightly sealed.

The doors in these partitions shall have at least a 1 h fire resistive construction (at least 30 min for doors in an entryC) air lock, etc.) and be tightly fitting and selt-closinq,,5.5 Ventilation

5.5.1 General

Special machinery rooms shall be ventilated by means of natural ventilation through windows, grilles, vent holes, orby mechanical ventilation to the outside of the building such as not to cause inconvenience or danger to persons orgoods. The ventilation shall be sufficient both for normal operating conditions and emergencies. The requiredcapacity shall be determined by 5.5.2 or 5.5.3.

Provisions shall be made for a sufficient supply of outside replacement air and a good distribution of that air overthe special machinery room without blind angles. Openings for outside air shall be positioned to avoid shortcircuiting.

NOTE: Ducts may be required for ventilation.

Refrigerants may be heavier or lighter than air. For heavier than air refrigerants, at least 50 % of the dischargevolume is taken from the lowest point in the special machinery room and the outside air inlet shall be near thehighest point. For lighter than air refrigerants, the discharge volume shall be taken from the highest point and theoutside air inlet shall be near the lowest point.

()n special machinery rooms with an entirely or partly underground construction or other special machinery rooms- where natural ventilation is not possible, e.g. on ships and in mines, mechanical ventilation shall operate when

personnel are present. When no personnel are present, emergency ventilation shall be automatically controlled bya refrigerant detector.

5.5.2 Natural ventilation

The total free opening area for the natural ventilation of the special machinery room shall be at least

A = 0,14 x m'n

where:

A is the free opening area, in square metres;

m is the mass of refrigerant charge, in kilogrammes, in the refrigerating system with the largest charge,any part 01 which is located in the special machinery room;

0,14 is the relationship between area and mass, in square metres divided by the root of kilogrammes.

Free flow through windows, grilles and vent holes or ducts shall not be hampered by walls or fences, shaft walls,adjacent buildings or other Obstructions, and consideration shall be given to the density of the refrigerant.

Page 7EN 378-3:2000

5.5.3 Mechanical ventilation

Mechanical ventilation shall be by fans capable at removing from the special machinery room at least

t: = 14 x m'Y1

where:

V is the flow. in Iitres per second;

m is the mass of refrigerant charge, in kilogrammes, in the refrigerating system with the largest charge, anypart of which is located in the special machinery room;

14 is a conversion factor.

The ventilation system shall not be required to produce more than 15 air changes per hour.

It shall be possible to switch the fans on and off both in and outside the special machinery room. In the case ofspecial machinery rooms completely or partly installed underground the operating switch outside the specialmachinery room shall be located on the ground floor.

Fan motors which are likely to operate in spaces with risk for flammable gas/air mixtures shall be placed outside theair stream or comply with the requirements for hazardous ateas (explosion proof). The construction and materialsof the fans shall not contribute to fire or sparking.

5.6 Special machinery rooms for group 12 refrigerants

5.6.1 Emergency exits

At least one emergency exit shall open directly to the open air, otherwise it shall lead to an emergency exitpassageway.

The doors in this emergency exit passageway shall be such that they can be opened manually from inside themachinery room (anti-panic system).

5.6.2 Absorption of ammonia

5.6.2.1 Water supply

Due to the high absorption capacity of ammonia gases in water, a water supply for manual spraying or a waterscreen in each special machinery room shall be considered according to circumstances. The water supplyconnection shall be such that no contaminated waler can flow back into the main.

5.6.2.2 Contaminated water

If a water supply is installed, measures shall be taken to ensure that the contaminated water is collected inappropriate vessels and disposed of safely.

5.7 Special machinery rooms for group L3 refrigerants

5.7.1 Minimum conformity criteria requirements

Special machinery rooms for refrigerating systems using a group L3 refrigerant shall meet the requirements of 5.6.1and shall be constructed according to the regulations applying to spaces presenting an explosion hazard.

(J

Page 8EN 3783:2000

5.7.2 Explosion relief

Some explosion relief (e.g. frangible wall or roof) shall be provided, if it is possible for the concentration of refrigerantto reach the lower flammability limit.

6 Electrical installations

6.1 General arrangements

6.1.1 Main power supply

The electrical power supply to a refrigerating system shall be arranged so that it can be switched off independentlyof the electricity supply to other electrical equipment in general and, in particular, to any lighting system, ventilationunit, alarm and other safety equipment.

6.1.2 Mechanical ventilation

Fans, supplied in accordance with 5.5 for the ventilation of rooms containing refrigerating equipment shall be soarranged that they can be controlled by SWitching arrangements both inside and outside the rooms.

6.1.3 Normal lighting

Permanent luminaires shall be selected and positioned in spaces containing refrigerating equipment to provideadequate illumination for safe operation.

6.1.4 Emergency lighting

A fixed or portable emergency lighting system shall be provided, adequate to allow operation of controls andevacuation of personnel, when normal lighting fails.

6.1.5 Alarm system

A refrigerant leak alanm system (see 6.2.5.3) shall be powered by an independent emergency system e. g. batteryback up installed in accordance with European standards.

C) 6.2 Special arrangements6.2.1 Condensation

Where moisture from condensation may contact electrical equipment, such equipment shall be suitable.

6.2.2 Trickling water

Special care shall be taken to avoid water trickling on electric panels and individual electric equipment.

6.2.3 Flammable refrigerants

Some of the group L2 refrigerants and all group L3 refrigerants are flammable. Where the charge of flammablerefrigerants in any refrigerating system exceeds the amount of 2,5 kg of group L3 refrigerant or 25 kg of flammablegroup L2 refrigerant (except for ammonia, see also 6.2.4 and 6.2.5), all electrical equipment in any room in whichany part of the refrigerating system is installed shall comply with the requirements for hazardous areas.

Page 9EN 378-3:2000

6.2.4 Ammonia (R-717) in rooms with electrical equipment

Electrical equipment in rooms in which a refrigerating system containing ammonia is located need not conform torequirements for hazardous areas.

6.2.5 Ammonia (R-717) in special machinery rooms

6.2.5.1 General

Special machinery rooms in which a refrigerating system containing ammonia with a charge of more than 10 kg islocated, shall comply with 6.2.5.2 and 6.2.5.3.

6.2.5.2 Electrical switches

Switches shall be provided to disconnect all electrical circuits entering the room (except low voltage alarm circuits).These switches shall be of the totally enclosed type or shall be located outside the special machinery room.

Automatic switches shall be activated to disconnect their circuits by ammonia detectors.

C) 6.2.5.3 VentilationThe special machinery room shall be provided with a mechanical ventilation system used exclusively for the specialmachinery room. The minimum air moving capacity of the system shall be in accordance with 5.5.3. This ventilationsystem shall be activated by an ammonia detector. The fan motor and associated electrical equipment shall be ofthe explosion proof type or shall be located outside the special machinery room and the ventilation air stream.

Failure of the mechanical ventilation system shall initiate a supervised alarm so corrective action can be taken.

7 Detectors and alarms

7.1 General

The location of the detectors shall be chosen in relation to the refrigerant.

Refrigerant detectors are intended to give earty warning of a dangerous concentration of refrigerant vapour in thesurrounding air of a refrigerating system and of pollution of the environment.

(-) 7.2 Special machinery rooms.~-

The refrigerant concentration in each special machinery room shall be monitored at one or more points to activatean alanm covering human occupied spaces and possibly shut off parts of the system.

7.3 Large refrigerant charges

For a refrigerating system with a refrigerant charge of more than 500 kg, measures shall be taken to detect thepresence of refrigerant in any associated circuit containing water or other liquids.

7.4 Refrigerant detectors to warn of dangerous concentrations

7.4.1 Refrigerating systems with group L1 or odourless group L2 refrigerant

If a refrigerating system with either a group L1 refrigerant or an odourless group L2 refrigerant is equipped withrefrigerant detectors then they shall function at a concentration not exceeding the practical limits of refrigerant in airas indicated in EN 378-1.

Page 10EN 378-3:2000

7.4.2 Detectors used to ensure safety

Detectors used to ensure safety shall have their sensors located in such positions that they monitor theconcentration at heights of the occupants of a human occupied space taking into account the characteristics of therefrigerant used. They shall operate a supervised and/or audible alarm so that appropriate action may be taken bythe occupants or initiated by trained personnel and/or shall close the fractured refrigerant line by suitable valves tolimit the rise in concentration within the human occupied space.

7.5 Ammonia detectors to warn against the danger of explosion or fire and for control purposes

An ammonia detector required in accordance with 6.2.5 shall function at a concentration not exceeding:

- 3BO mglm' (500 ppm (VN)) in machinery rooms (low alarm level);

- 22 BOO mglm' (30 000 ppm (VN) (high alarm level).

At the low alarm level. an alarm and the mechanical ventilation shall be activated. At the high alarm level, therefrigerating system shall automatically be stopped.

C) 7.6 Refrigerant detectors to warn against explosion and fireA refrigerant detector for a group L3 refrigerant shall function at a level not exceeding 25 % of the lower limit ofconcentration of the flammability range in air for the refrigerant (see EN 378-1) and activate an alarm.

7.7 Supervised alarm

When sensing a refrigerant concentration exceeding its preset limit, a refrigerant detector shall. in addition to itsother functions. activate a supervised alarm and the resulting emergency action to be initiated.

NOTE: For maintenance purposes. the alarm can be temporarily overriden in a way that accords withprescribed procedures.

fn case of computer controlled equipment, access to adjust parameters shall be restricted to nominated competentpersons.

8 Heat sources and temporary high temperatures

C:.) If evaporators or air cooters are installed in the proximity of heat sources, effective measures shall be taken toprevent the evaporators or coolers being exposed to excessive heat, which gives rise to high pressures.

Condensers and liquid receivers shall not be located in the proximity of heat sources.

If a part of the refrigerant circuit can reach a temperature which is above the temperature corresponding with theallowable pressure (e.g. on account of an electrical defrosting system, a defrosting system utilizing hot water, orcleaning by means of hot water or steam), the liquid contained in it shall be able to escape to some other part of thesystem in which this higher temperature does not prevail. If necessary, the system shall be equipped with a receiverwhich is permanently connected with the apparatus in question.

9 Personal protective equipment

9.1 General requirements

9.1.1 Quantity and type of refrigerant

Personal protective equipment appropriate to the quantity and type of refrigerant shall be readily available.

()'-

Page 11EN 378-3:2000

9.1.2 Accessibility

The equipment tor personal safety shall be readily accessibte and suitable for the type 01 refrigerant and refrigeratingsystem in use.

9.1.3 Storage

The equipment lor personal safety shall be carefully stored free from improper interference. nonmally outside theroom in which the refrigerant may escape. but near to the entry to this room.

9.1.4 Check and maintenance'

Personal protective equipment and equipment for emergency use shall be regularly checked and maintained inaccordance with the manufacturer's recommendations. The equipment shall also be checked and cleaned after everyuse. When defects or deficiencies are discovered. the equipment shall be replaced without delay.

NOTE 1: The extent of personal protective equipment and equipment for emergency use provided should beagreed with the local rescue service (fire brigade), e.g. the types and numbers of respiratory protectivedevices.

NOTE 2: During planned maintenance of relrigerating systems the equipment for persona! safety should beagreed and provided by the service/maintenance company.

9.1.5 Compatibility

Personal protective equipment shall be compatible with the refrigerant being used and low temperatures. and shallhave good insulating properties.

9.1.6 Temperature

Respiratory protective devices shall be able to operate at a temperature down to the temperature achieved by thesystem or ambient climate conditions depending on the application.

9.1.7 Suitability

Filter protection respirators shall be suitable for the refrigerant used and/or for the decomposition products whichmay arise from it due to the action 01 a naked flame or lire.

Spare filler inserts shall always be available.

NOTE: Fitter inserts are nonmally identified by a colour code and a character code for the vapour in question.

9.1.8 Location

Respiratory protective devices shall be located outside the refrigeration machinery room near to the doors and storedsafely and protected.

NOTE 1: The respirator should fit the person who may nonmally be expected to use it. and who is fullyconversant with its use. Personnel should be thoroughly and regulary instructed in how to use the respirator.

NOTE 2: In refrigerating systems where several persons are employed for the purpose of operating andmaintaining the system, each and every one should have access to a respirator of suitable type with whichthey are IUlly familiar.

(J

Page 12EN 378-3:2000

NOTE 3: Respiratory protective devices should be maintained in accordance with the manufacturer'sinstructions/recommendations and checked periodically, even if not used, see informative annex A. Whenrespirators with a filter insert are used, the length of time the respirator was used should be noted on eachoccasion. The insert should be changed as necessary. The date of procurement of new inserts should benoted.

9.2 Personal protective equipment

Personal protective equipment as follows shall be provided for use by every person doing maintenance, repair andrecovery:

a) for all refrigerants and irrespective of the properties of the refrigerant:

- protective gloves and protection for eyes;

b) for group L2 refrigerants:

- a filter protection respirator (full face mask) or a self-contained breathing apparatus.

NOTE: A filter protection respirator shoutd always be used (with filter insert designed to afford protection fromdecomposition products) for refrigerating systems containing group L1 refrigerant when welding or brazing iscarried out in the presence of refrigerant.

9.3 Equipment for emergency use

9.3.1 General

Equipment for emergency use shall be provided as follows:

- respiratory protective devices;

- first aid equipment;

- emergency shower.

This does not apply for a refrigerating system with a refrigerant charge of up to 200 kg of group L1 refrigerant or100 kg of groups L2 (for ammonia see 9.3.4) and L3 refrigerant and also when a special machinery room isunnecessary.

9.3.2 Respiratory protective devices

Respiratory protective devices shall be suitable for the refrigerant used.

NOTE: Respirators are recommended for refrigerating systems which are located in special machinery rooms.

Respiratory protective devices shall consist of:

- a minimum of two self-contained breathing apparatus,

- in addition for ammonia (R-717) filter respirators (full face mask) shall be issued to persons on the job.

9.3_3 First aid equipment

First aid equipment, medicines and special chemicals related to the refrigerants in use together with protectiveblankets etc. shall be available and stored outside the special machinery room but near to its entry.

Special attention shall be paid to equipment for rapid treatment of eye injuries.

Medicines and other chemicals in the first aid equipment shall be provided only after consultation with medical

C)

Page 13EN 3783:2000

experts.

NOTE: For first aid instructions see informative annexes Band C.

9.3.4 Emergency showers.

An emergency body shower and an eye shower shali be instalied where the refrigerating system having a chargeabove 50 kg uses the refrigerant R-?1? (ammonia).

The water for the showers shali be thermostaticaliy controlled (mixed warm/cold water) to avoid low temperatureshock to the injured person.

C)

Page 14EN 3783:2000

Annex A (informative)Thorough examination and tests of respiratory protective devices

A.1 Examination and test frequency

A thorough examination and, where appropriate, tests of respiratory protective devices should be made at least onceevery month and more frequently when the conditions are particularly severe.

A.2 Extent of examination and test

The examination should comprise a thorough visual examination of all parts of the respirator or self-containedbreathing apparatus, in particular of the integrity of straps, facepieces, filters and valves. In the case of respiratoryprotective devices incorporating compressed gas cylinders, tests should be made to ascertain the condition andefficiency of those parts, inclUding the pressure in the cylinders. Any defects disclosed by the examination or testshould be remedied before further use.

The record of each examination and test carried out should include:

a) the name and address of the employer responsibie for the respiratory proiective devices:

b) particulars of the devices and of the distinguishing number or mark. together with a description sufficient toidentify it, and the name of the manufacturer;

c) the date of the examination and the name and signature or unique authentication of the person carrying outthe examination and test;

d) the condition of the devices and particulars of any defect found, including, in the case of filler protectionrespirators, confimnation that the iilter insert is unused;

e) in the case of compressed oxygen or air apparatus the pressure of oxygen or air, as the case may be, in thesupply cylinder.

Page 15EN 378-3:2000

Annex B (informative)

First aid when refrigerants other than R-717 are used - Immediate actions

If the victim is unconscious

- Immediately send for a physician and an ambulance equipped with a respirator.

- While waiting for the ambulance to arrive and if it is safe to do so the victim should be taken into a ventilatedroom or outside the building. The victim should be laid on his or her side.

- Infonn the physician about the refrigerant the victim was exposed to, preferably by a label attached to thevictim.

- Loosen clothing covering the chest and neck to make breathing easier.

- If necessary, apply mouth-to-mouth resuscitation.

- Ensure that persons who have inhaled large quantities of vapour are treated with oxygen as quickly as possibleby a competent person. Moreover keep them as quiet as possible.

CJ -Water or other liquids should never be administered by mouth except on medical advice.Splashes to the eyes

- Never rub the eyes.

- Remove contact lenses, if worn.

- Keep the eyelid up and rinse with large quantities of water for at least 20 min.

- Then take the victim immediately to a specialized physician (oculist) or to a casualty hospital.

Contamination of the skin

- Rinse the affected parts with large quantities of running water for at least 20 min, meanwhile remove clothingas the running water is appiied.

,] - Never cover the affected parts with clothes, bandages, oil etc.- Take the victim to a physician or a casualty hospital as quickly as possible after rinsing.

Swaltowing liquid

- Make the victim, when conscious, drink as much water or wann beverage as possible.

Page 16EN 378-3:2000

Annex C (informative)

First aid when refrigerant R-717 (ammonia) is used - Immediate actions

If the victim is unconscious

- Immediately send for a physician and an ambulance equipped with a respirator.

- While waiting for the ambulance to arrive and if it is safe to do so the victim shouid be taken into a ventilatedroom or outside the buitding. The victim should be laid on his or her side.

- Inform the physician about the refrigerant the victim was exposed to, preferably by a labei attached to thevictim.

- Loosen clothing covering the chest and neck to make breathing easier.

- If necessary, apply mouth-to-mouth resuscitation.

- If clothing is contaminated by ammonia, place the victim in an emergency body shower (with plenty of water)and rinse for at least 20 min. Remove any contaminated clothing.

e) - Ensure that persons who have inhaled large quantities of gaseous R-717 are treated with oxygen as quicklyas possible by a competent person. Moreover keep them as quiet as possible.

- Water or other liquids should never be administered by mouth except on medical advice.

Sptashes to the eyes

- Never rub the eyes.

- Remove contact lenses, if worn.

- Keep the eyelid up and rinse with large quantities of water for at least 20 min.

- Then take the victim immediately to a specialized physician (oculist) or to a casualty hospital.

Contamination of the skin

:) - Rinse the affected parts with large quantities of running water for at least 20 min, meanwhile remove clothingas the running water is applied.- Never cover the affected parts with clothes, bandages, oil etc.

- Take the victim to a physician or a casualty hospital as quickly as possible after rinsing.

Swalfowing liquid

- Make the victim, when conscious, drink as much water or warm beverage as possible.

- Inform the physician, the hospital and the "Anti-Poison Centre".

(J

Page 17EN 378-3:2000

Annex D (informative)Bibliography

EN 133Respiratory protective devices - Classification

EN 292-1Safety of machinery - Basic concepts, general principles for design - Part 1: Basic terminology, methodology

EN 292-2Safety of machinery - Basic concepts, general principles for design - Part 2: Technical principles andspecifications

EN 371Respiratory protective devices - AX gas fillers and combined filters against low boiling organic compounds -Requirements, testing and marking

EN 372Respiratory protective devices - SX gas filters and combined filters against specific named compounds -Requirements, testing, marking

prEN 420: 1998General requirements for gloves

EN 511Protective gloves against cold

EN ISO 9001Quality systems - Model for quality assurance in design/development, production, installation and servicing(ISO 9001 : 1994)

EN ISO 9002Quality systems - Model for quality assurance in production, installation and servicing (ISO 9002: 1994)

EN ISO 9003Quality systems - Model for quality assurance in final inspection and test (ISO 9003 : 1994)

EN ISO 9004-1Quality management and quality system elements - Part 1: Guidelines (ISO 9004-1 : 1994)

EN 45011General requirements for bodies operating product certification systems (ISO/IEC - Guide 65 : 1996)

EN 45012General requirements for bodies operating assessment and certification / registration of quality systems (lSO/IEC- Guide 62 : 1995)

EN 45013General criteria for certification bodies operating certification of personnel

Page 18EN 378-3:2000

Annex ZA (informative)

Clauses of this European Standard addressing essential requirements or other provisions of EUDirectives

This European standard has been prepared under a mandate given to CEN by the European Commission and theEuropean Free Trade Association and supports essential requirements of EU Directive 97/23/EC of the EuropeanParliament and of the Council of 29 May 1997 on the approximation 01 the laws of the Member States concemingpressure equipment.

WARNING: Other requirements and other EU Directives may be applicable to the products falling within thescope of this standard.

The following clauses of this standard are likely to support requirements of the Directive 97/23/EC.

Compliance with these clauses of this standard provides one means of confonming with the specific essentialrequirements of the Directive concerned and associated EFTA regulations.

Table ZA.l: Correspondence between this European Standard and Directive 97/23/EC

Clauseslsu!>-clauses of this Essential requirements (ERs) Qualifying remarkslNotesEuropean Standard of Directive 97/23/EC

5,6,7,a,9 1.1,12,1.3 General

CJ