HHSRS VERSION 2

SEPTEMBER 2004

COLD

Persons aged 60 years or over

Damp and Mould Growth

EXCESS

Vulnerable group

Related hazards

Front elevation

HHSRS VERSION 2

Multiple locations

Yes

No

Secondary hazards

Yes

No

Hot water tank

DESCRIPTION OF HAZARDS

Dwelling:

1950s non-traditional semi-detached house, similar

to the BISF design.

Background: The walls are of steel frame constrution, faced externally with vertical steel sheeting.

Intenally the walls are finished with plasterboard supported on timber frames.

A) Heating: This was originally by open fires throughout. At sometime, the open fireplaces to

the first floor were sealed and gas fires fitted to the two ground floor living rooms. The

occupier uses portable electric heaters to supplement the gas fires.

B) Insulation: The original construction included glasswool quilting hung within the external wall

frame, and a thin (50mm) layer to the whole of the roof space. There is no insulation to the

hot water tank and the windows are single glazed.

LIST OF RELEVANT MATTERS

LIKELIHOOD & OUTCOMES

A

B

# Secondary hazards

A

B

a)

Thermal insulation

-

3

-

None

-

-

b)

Dampness

-

c)

Settling of insulation

-

3

d)

Type of heating provision

2

-

e)

Size of heating system

3

-

f)

Installation & maintenance

3

-

g)

Controls to heating system

3

-

h)

Amount of ventilation

-

Key

3

Seriously defective

I)

Ventilation controls

-

2

Defective

j)

Disrepair to ventilation

-

-

1

Not satisfactory

k)

Draughts/excess ventilation

-

-

Satisfactory/NA

A B C D E F G H

I

J

Average likelihood, outcomes and HHSRS score for excessive cold for persons aged 60

years or more in 1964-1979 Non-HMOs and all dwellings, 1997-99.

HHSRS VERSION 2

SEPTEMBER 2004

HEALTH AND SAFETY RATING SYSTEM SCORES

1945-79 House

LIKELIHOOD

Low

High

1 in

32

Example

32

42

24

13

7.5

4

2.5

1.5 >

Average: 400

< 4200 2400 1300 750 420 240 130

75

Justification

OUTCOMES

Class I

Class II

Class III

Class IV

Justification

RATING

The two gas fires are not capable of heating the whole of the dwelling. The insulation,

even as original, would be considered inadequate now, and has settled over the years

to become less effective. The result is that the likelihood of the dwelling being

unhealthily cold is increased.

%

Average: 34.0

< 0.05 0.15 0.3

0.7

1.5

3

Av: 6.0

4.6

< 0.05 0.15 0.3

0.7

1.5

3

< 0.05 0.15 0.3

0.7

1.5

3

< 0.05 0.15 0.3

0.7

1.5

3

31.6

7

15

26

7

15

26

Av: 18.0

21.5

7

15

26

31.6

38 >

4.6

38 >

21.5

Score

327

38 >

Av: 42.0

42.3

42.3

7

15

26

38 >

Although the likelihood of a harmful occurrence is much higher than average, there is

nothing to indicate that spread of harms will vary from the average.

Example

A B C

Average: 880

D E F G H

I

J

Score 10233

RATING SCORES AFTER IMPROVEMENT

IMPROVE

Justification

NEW RATING

Av: Nos

Improved

Likelihood to

1 in 1,000

Outcomes to

31.6 4.6 21.5 42.3 %

Installing an efficient heating system capable of heating the whole of the dwelling and

providing additional thermal insulation to the external walls and the roof space would

reduce the rating around the average for dwellings of this age group (Band D).

Installing double glazing would further the reduce the likelihood to band E.

Av: 880