SCHEDULE 1PARTICULARS TO BE INCLUDED IN SAFETY CASE OF A PERSON CONVEYING GAS
General
1.
Name and address of the person preparing the safety case (in this Schedule referred to as “the duty holder”).
2.
A description of the operation intended to be undertaken by the duty holder.
3.
A general description of the plant and premises the duty holder intends to use in connection with the operation including, in particular, the geographical location where any pipes he uses joins pipes used by other persons for conveying gas.
4.
Particulars of any—
(a)
technical specifications;
(b)
procedures or arrangements relating to operation and maintenance,
which the duty holder intends to follow in connection with the operation he intends to undertake insofar as they affect the health and safety of persons.
Safety management
5.
A statement of the significant findings of the risk assessment he has made pursuant to F1regulation 3 of the Management of Health and Safety at Work Regulations 1999, and particulars of the arrangements he has made in accordance with regulation 5(1) thereof.
6.
Particulars to demonstrate that the management system of the duty holder is adequate to ensure that the relevant statutory provisions will (in respect of matters within his control) be complied with in relation to the operation he intends to undertake.
7.
Particulars to demonstrate that the duty holder has established adequate arrangements for ensuring the competence of his employees in health and safety matters.
8.
Particulars to demonstrate that the duty holder has established adequate arrangements for managing work carried out by persons who are not his employees on or in relation to plant or premises which he owns or controls.
9.
Particulars to demonstrate that the duty holder has established adequate arrangements for passing information relevant to health and safety to persons within his undertaking.
10.
Particulars to demonstrate that the duty holder has established adequate arrangements for passing and receiving information relevant to health and safety to and from other persons who have duties under these Regulations.
11.
Particulars to demonstrate that the duty holder has established adequate arrangements for audit and the making of any necessary reports.
Co-operation
12.
Particulars of the arrangements the duty holder has established to enable him to comply with regulation 6 (co-operation) including (except where he is the network emergency co-ordinator F2or the emergency reporting service provider for the network) particulars of the arrangements he has established to ensure that any directions given to him by the network emergency co-ordinator F2or the emergency reporting service provider for the network are followed.
Gas escapes and investigations
13.
Particulars of the arrangements—
(a)
the duty holder and any emergency service provider appointed by him have established to enable him or the provider, as the case may be, to comply with regulation 7(4) to (6);
(b)
the duty holder has established to appoint emergency service providers.
14.
Particulars to demonstrate that the duty holder has established adequate arrangements to enable him to comply with paragraphs (12), (13), (15) and (16) of regulation 7, for co-ordinating the investigations he causes to be carried out pursuant to that regulation with other investigations carried out pursuant thereto, and for participating in such other investigations.
Content and other characteristics of gas
15.
Particulars to demonstrate that the duty holder has established adequate arrangements to ensure that all gas he conveys complies with regulation 8.
Continuity of supply
16.
Particulars to demonstrate that the duty holder has established adequate arrangements to minimise the risk of a supply emergency.
17.
Particulars to demonstrate that the duty holder has established adequate arrangements to ensure that the gas he conveys will be at an adequate pressure when it leaves the part of the network used by him.
Supply emergencies
18.
Particulars to demonstrate that the duty holder has established adequate arrangements for dealing with supply emergencies or other incidents which could endanger persons.
19.
Where the duty holder is the only person conveying gas in a network, particulars to demonstrate that he has established adequate arrangements to decide when and for how long gas not conforming with the requirements of regulation 8(1) should be conveyed in the network pursuant to regulation 8(4).
20.
Without prejudice to paragraph 18 above, particulars of the procedures that the duty holder has established to discontinue safely supply to consumers, when it is known there is insufficient gas to satisfy demand.
21.
Particulars of the procedures that the duty holder has established to restore safely the gas supply to consumers, following an interruption in supply.
Interpretation
22.
In this Schedule—
(a)
“audit” means systematic assessment of the adequacy of the management system to achieve the purpose referred to in paragraph 6 carried out by persons who are sufficiently independent of the system (but who may be employed by the duty holder) to ensure that such assessment is objective;
(b)
;“management system” means the organisation and arrangements established by the duty holder for managing his undertaking;
(c)
any reference to an operation intended to be undertaken by the duty holder is a reference to his intended operation of conveying gas in a network.
SCHEDULE 2PARTICULARS TO BE INCLUDED IN SAFETY CASE OF A NETWORK EMERGENCY CO-ORDINATOR
1.
Name and address of the person preparing the safety case (in this Schedule referred to as “the duty holder”).
2.
A general description of the network to which the safety case relates, including the geographical location of where pipes used by different persons conveying gas in the network join.
3.
Particulars to demonstrate that the duty holder has established adequate arrangements for co-ordinating the actions to be taken to prevent a supply emergency including—
(a)
particulars to demonstrate that the duty holder has established adequate arrangements to monitor gas flow within the network in order to identify a forthcoming supply emergency;
(b)
in cases where it is not possible to obtain sufficient gas, particulars of the procedures and arrangements that the duty holder has established to direct persons conveying gas to secure a reduction in consumption and to verify that such directions have been followed;
(c)
particulars of the procedures that the duty holder has established to monitor the situation throughout a supply emergency, and details of the procedures established to restore safely the gas supply to consumers, once the emergency is over;
(d)
particulars to demonstrate that the duty holder has established adequate arrangements to decide when and for how long gas not conforming with the requirements of regulation 8(1) should be conveyed in the network pursuant to regulation 8(2);
(e)
particulars to demonstrate that the duty holder has established adequate arrangements for rehearsing and testing the actions to be taken in the case of a supply emergency;
(f)
a general description of the plant and premises the duty holder intends to use in connection with the arrangements and procedures described in his safety case pursuant to this paragraph.
4.
The same particulars as are referred to in paragraphs 4 to 11 of Schedule 1 as if any reference in paragraphs 4 and 6 thereof to the operation intended to be undertaken were a reference to the network emergency co-ordinator’s functions under the arrangements and procedures described in his safety case.
SCHEDULE 3CONTENT AND OTHER CHARACTERISTICS OF GAS
PART IREQUIREMENTS UNDER NORMAL CONDITIONS
1.
The content and characteristics of the gas shall be in accordance with the values specified in the following table.
Content or characteristic | Value |
|---|---|
hydrogen sulphide content | ≤5 mg/m3; |
total sulphur content (including H2S) | ≤50 mg/m3; |
hydrogen content | ≤0.1% (molar); |
oxygen content | F3≤1.0% (molar), where the gas is conveyed in a pipe operated at a pressure of ≤38 barg, and ≤0.2% molar, where the gas is conveyed in a pipe operated at a pressure of >38 barg; |
impurities | shall not contain solid or liquid material which may interfere with the integrity or operation of pipes or any gas appliance (within the meaning of regulation 2(1) of F4the 1998 Regulations) which a consumer could reasonably be expected to operate; |
hydrocarbon dewpoint and water dewpoint | shall be at such levels that they do not interfere with the integrity or operation of pipes or any gas appliance (within the meaning of regulation 2(1) of F5the 1998 Regulations) which a consumer could reasonably be expected to operate; |
F6RD | ≤0.700 |
WN | (i) ≤51.41 MJ/m3, and (ii) ≥47.20 MJ/m3; |
F7... | F7... |
F8... | F8... |
2.
The gas shall have been treated with a suitable stenching agent to ensure that it has a distinctive and characteristic odour which shall remain distinctive and characteristic when the gas is mixed with gas which has not been so treated, except that this paragraph shall not apply where the gas is at a pressure of above 7 barg.
3.
The gas shall be at a suitable pressure to ensure the safe operation of any gas appliance (within the meaning of regulation 2(1) of F9the 1998 Regulations) which a consumer could reasonably be expected to operate.
4.
(1)
Expressions and the abbreviations used in this Part shall have the meanings assigned to them in Part III of this Schedule.
F10(2)
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PART IIREQUIREMENTS FOR GAS CONVEYED TO PREVENT A SUPPLY EMERGENCY
1.
The requirements of the gas referred to in regulation 8(2) and (4) are—
(a)
WN—
(i)
≤52.85 MJ/m3, and
(ii)
≥46.50 MJ/m3; and
F11(b)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
and in all other respects the gas shall conform to the requirements specified in Part I of this Schedule, as if those requirements were repeated herein.
2.
(1)
Expressions and abbreviations used in this Part shall have the meanings assigned to them in Part III of this Schedule.
F12(2)
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PART IIIINTERPRETATION
1.
In this Schedule—
“bar” means bars (absolute);
“barg” means bars (gauge);
“C” means degrees Celsius;
F13...
F14...
F15...
F16“gross calorific value” means the gross calorific value, expressed in MJ/ m3, of a dry gas determined on the basis that the water produced by combustion is assumed to be condensed;
“mg/m3” means milligrams per cubic metre F17under the reference conditions;
F18“MJ/m3” means megajoules per cubic metre under the reference conditions;
F19...
F20...
F21“relative density” (“RD”) means the ratio of VG to VA (expressed in the same units) where—
VG is the mass of a volume of the gas when containing no water vapour under the reference conditions; and
VA is the mass of the same volume of air containing no water vapour under those conditions;
F22...
F23“WN” means the Wobbe Number of the gas, which is calculated in accordance with the following formula—
F24...
F251A.
In this Schedule, the reference conditions are 15C and 1.01325 bar.
F262.
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