Estates and Facilities Division Alert

micefunctionalΠολεοδομικά Έργα

15 Νοε 2013 (πριν από 4 χρόνια και 1 μήνα)

97 εμφανίσεις

Page
1

of
3











Background


3
)

The Department
have been advised of an incident involving the death of a technician after


apparently suffering oxygen depr
ivation whilst filling a flask with liquid Nitrogen.




4
)

Another incident resulted in
the loss to

atmosphere of over 1000 lts of liquid Nitrogen from


an

auto fill cryogenic refrigerator located in a confined space.



Enquiries


Enquiries to
the
Department of Health should be addressed to:



Mohammed Pandor


Senior Engineer


Engineering, Techno
logy and Environment


Estates & Facilities Division


3N 34A Quarry House


Leeds, LS2 7UE


Tel


: 0113 254
5622


Fax


: 0113 254 5793


E
-
mail

:
mohammed.pandor
@dh.gsi.gov.uk







I
ssued by Estates and Facilit
ies Division: © Crown Copyright 2005


Product

Liquid Nitrogen

Manufacturer/Supplier

Various

Problem

Spillage, leakage, and splashes

Risk

Death or serious injury by asphyxiation and cold burns

Action

Develop safe systems of work and emergency procedures

Deadline (Action U
nderway):
01/12
/200
5

Deadline (Action Complete):
31
/
03
/200
6

Chief Executive/Board Member with special responsibility for health and safety, in

accordance
w
ith local procedures ensure that this Alert is brought to the attention of
appropriat
e staff who

s
hould take the following action:


1)
Trusts are advised to ensure safe systems of work and emergency procedures are in


place if liquid Nitrogen is produced, delivered or used on the premises.


2)
Refer to
Appendix 1 for useful publication
s.


Estates and Facilities
Division Alert

Engineering, Technology and Environment


Alert Category



Immediate Action




Action




Update




Information Request

DH (2005)
13

Issue
d
:
9
th

Nov
ember

2005

Gateway Ref:
5493

HOW TO REPORT DEFECTS AND FAILURES

All staff working in a healthcare environment have a responsibility to report any defect or failure that occurs at work to th
e Department of Health. Guidance for reporting
such incidents is
contained in NHSE (2005) 01. If you have any queries, please seek advice from your Line Manager or the Department of Health

Page
2

of
3

Appendix 1


Useful publications for liquid Nitrogen


1.0 British Compressed Gases Association (BCGA)


CP 30

The Safe Use of Liquid Nitrogen Dewars up to 50 litres: 2000


Specifically addresses the use of liquid nitroge
n in open dewars and dewars fitted



with liquid withdrawal attachments operating at less than 0.5 bar. Covers the storage,


filling, use and maintenance of dewars of

not more than 50 litres capacity.





CP28

Vacuum Insulated Tan
ks of not more than 1,000 litres volume which are

Static Installations at User Premises: Revision 1: 2004


This code of practice applies to vacuum insulated tanks of not more than 1,000 litres


water capacity, used as fixed installations for
the following gases: Nitrogen, argon,


oxygen, carbon dioxide, helium or nitrous

o
xide. This code provides guidance for the


minimum requirements for: General safety precautions,
d
esign and construction,


operation, t
ank management and filling, transportation, in
-
service examination,

modifications / repairs and records


CP27

Transportable Vacuum Insulated Containers of not more than 1000

litres


volume: Revision 1: 2004


This code of practice applies to t
ransportable, vacuum insulated, tanks of not more


than 1,000 litres water capacity, for the following gases: Nitrogen, argon, oxygen,


carbon dioxide, helium or nitrous oxide. This

code provides guidance for the


min
imum requirements for: General safety precautions, design and construction,


operation, tank management and filling, transportation, in
-
service examination,


modifications/repairs and records


CP25

Revalidation of Bulk Liquid Oxygen, Nitrogen
, Argon and Hydrogen

Cryogenic


Storage Tanks. Revision 1: 1998.



C
overs the revalidation for continued service of static tanks designed for the storage


of cryogenic gases.
T
anks above 1,000 litres capacity are covered.


CP22


Bulk Liquid Argon or Nitrogen Storage at Production Sites. Revision 1: 2002


Covers liquid argon or nitrogen storage installations on production sites where the


storage is connected to

the production process plant. No upper limit on tank size



applies.


CP21


Bulk Liquid Argon or Nitrogen Storage at Users’ Premises. Revision 2: 2004


Covers the installation of liquid nitrogen and liquid argon tanks as fixed systems at


user’s premises. Safety

distances, location requ
irements, design issues,



commissioning, hand
-
over and maintenance are all
i
ncluded. Legislative


requirements are spelled out in detail.




2.0 British Oxygen Company (BOC)


Liquid Nitrogen
-

Data Sheet


Care with Cryogenics



3
.0

Health and Safety Executive (HSE)




HS(G)71

-

Storage of Packaged Dangerous Substances.


HS(G)91

-

Emergency planning for Accidents : COMAH Regulations 1999.


L122



-

"Safety of pressure systems"
-

Pressure Systems Safety Regulations 2000 and



Approved Code of Practice HSE 2000.


L 89


-

Approved Vehicle Requirements (Second Edition)
-

Carriage of Dangerous



Goods by Road Regulations 1996, HSC 1999.



Page
3

of
3

L 23


-

Manual Handling
-

Manual Handling Operations Regulations 1992
-
G
uidance on


Regulations, HSE 1998.


L 101


-

Safe Work in Confined Spaces
-
Approved Code of Practice, Regulations and


Guidance
-
Confined Spaces Regulations 1997 HSC 1997.


EH40


-

Occupational Exposure Limits.



4
.0

British Standard



BS 5429 : 1976


-

Code of practice for safe operation of small
-

scale storage facilities


for cryogenic liquids.


BS EN 12300 : 1999

-

Cryogenic vessels
-

Cleanliness for cryogenic service.


PD 5500 : 1997


-

Specifications for unfired Fusion Welded Pressure Vessels.


BS 6651


-

Code of practice for Protection of Structures against lightning.


BS 6399 Part 2


-

Code of Practice for wind loads.


BS EN 511


-

Specification for protective gl
oves against cold.